Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
219d1afa | 2 | Copyright (C) 1994-2018 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 10 | (at your option) any later version. |
252b5132 | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
ae9a127f | 17 | You should have received a copy of the GNU General Public License |
fc0bffd6 | 18 | along with this program; if not, write to the |
3e110533 | 19 | Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
53e09e0a | 20 | Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
cd123cb7 | 22 | |
252b5132 RH |
23 | /* This file is based on a preliminary PowerPC ELF ABI. The |
24 | information may not match the final PowerPC ELF ABI. It includes | |
25 | suggestions from the in-progress Embedded PowerPC ABI, and that | |
26 | information may also not match. */ | |
27 | ||
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
252b5132 | 30 | #include "bfd.h" |
252b5132 RH |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
34 | #include "elf/ppc.h" | |
7619e7c7 | 35 | #include "elf32-ppc.h" |
9d8504b1 | 36 | #include "elf-vxworks.h" |
6177242a | 37 | #include "dwarf2.h" |
08dc996f | 38 | #include "opcode/ppc.h" |
252b5132 | 39 | |
b9c361e0 JL |
40 | typedef enum split16_format_type |
41 | { | |
42 | split16a_type = 0, | |
43 | split16d_type | |
44 | } | |
45 | split16_format_type; | |
46 | ||
f0fe0e16 | 47 | /* RELA relocations are used here. */ |
252b5132 | 48 | |
252b5132 | 49 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 51 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 53 | |
70bccea4 AM |
54 | /* Branch prediction bit for branch taken relocs. */ |
55 | #define BRANCH_PREDICT_BIT 0x200000 | |
56 | /* Mask to set RA in memory instructions. */ | |
57 | #define RA_REGISTER_MASK 0x001f0000 | |
58 | /* Value to shift register by to insert RA. */ | |
59 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
60 | |
61 | /* The name of the dynamic interpreter. This is put in the .interp | |
62 | section. */ | |
252b5132 RH |
63 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
64 | ||
d7128ce4 | 65 | /* For old-style PLT. */ |
252b5132 RH |
66 | /* The number of single-slot PLT entries (the rest use two slots). */ |
67 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
68 | ||
d7128ce4 | 69 | /* For new-style .glink and .plt. */ |
a6aa5195 | 70 | #define GLINK_PLTRESOLVE 16*4 |
9e390558 | 71 | #define GLINK_ENTRY_SIZE(htab, h) \ |
407aa07c | 72 | ((4*4 \ |
9e390558 AM |
73 | + (h != NULL \ |
74 | && h == htab->tls_get_addr \ | |
75 | && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \ | |
76 | + (1u << htab->params->plt_stub_align) - 1) \ | |
77 | & -(1u << htab->params->plt_stub_align)) | |
d7128ce4 | 78 | |
9d8504b1 PB |
79 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
80 | ||
81 | /* The standard VxWorks PLT entry. */ | |
82 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
83 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
84 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
85 | { | |
07d6d2b8 AM |
86 | 0x3d800000, /* lis r12,0 */ |
87 | 0x818c0000, /* lwz r12,0(r12) */ | |
88 | 0x7d8903a6, /* mtctr r12 */ | |
89 | 0x4e800420, /* bctr */ | |
90 | 0x39600000, /* li r11,0 */ | |
91 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
92 | 0x60000000, /* nop */ | |
93 | 0x60000000, /* nop */ | |
9d8504b1 PB |
94 | }; |
95 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
96 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
97 | { | |
98 | 0x3d9e0000, /* addis r12,r30,0 */ | |
99 | 0x818c0000, /* lwz r12,0(r12) */ | |
100 | 0x7d8903a6, /* mtctr r12 */ | |
101 | 0x4e800420, /* bctr */ | |
102 | 0x39600000, /* li r11,0 */ | |
103 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
104 | 0x60000000, /* nop */ | |
105 | 0x60000000, /* nop */ | |
106 | }; | |
107 | ||
108 | /* The initial VxWorks PLT entry. */ | |
109 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
110 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
111 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
112 | { | |
07d6d2b8 AM |
113 | 0x3d800000, /* lis r12,0 */ |
114 | 0x398c0000, /* addi r12,r12,0 */ | |
115 | 0x800c0008, /* lwz r0,8(r12) */ | |
116 | 0x7c0903a6, /* mtctr r0 */ | |
117 | 0x818c0004, /* lwz r12,4(r12) */ | |
118 | 0x4e800420, /* bctr */ | |
119 | 0x60000000, /* nop */ | |
120 | 0x60000000, /* nop */ | |
9d8504b1 PB |
121 | }; |
122 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
123 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
124 | { | |
125 | 0x819e0008, /* lwz r12,8(r30) */ | |
07d6d2b8 | 126 | 0x7d8903a6, /* mtctr r12 */ |
9d8504b1 | 127 | 0x819e0004, /* lwz r12,4(r30) */ |
07d6d2b8 AM |
128 | 0x4e800420, /* bctr */ |
129 | 0x60000000, /* nop */ | |
130 | 0x60000000, /* nop */ | |
131 | 0x60000000, /* nop */ | |
132 | 0x60000000, /* nop */ | |
9d8504b1 PB |
133 | }; |
134 | ||
135 | /* For executables, we have some additional relocations in | |
136 | .rela.plt.unloaded, for the kernel loader. */ | |
137 | ||
138 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
139 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
140 | /* The number of relocations in the PLTResolve slot. */ | |
141 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
de194d85 | 142 | /* The number of relocations in the PLTResolve slot when creating |
9d8504b1 PB |
143 | a shared library. */ |
144 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
145 | ||
d7128ce4 | 146 | /* Some instructions. */ |
d7128ce4 | 147 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
148 | #define ADDIS_11_30 0x3d7e0000 |
149 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 150 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 151 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 152 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 153 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 | 154 | #define B 0x48000000 |
da3a2088 | 155 | #define BA 0x48000002 |
a6aa5195 | 156 | #define BCL_20_31 0x429f0005 |
d7128ce4 | 157 | #define BCTR 0x4e800420 |
a7f2871e AM |
158 | #define BEQLR 0x4d820020 |
159 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
160 | #define LIS_11 0x3d600000 |
161 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
162 | #define LWZU_0_12 0x840c0000 |
163 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 164 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
165 | #define LWZ_11_11 0x816b0000 |
166 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 167 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 168 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
169 | #define MR_0_3 0x7c601b78 |
170 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
171 | #define MFLR_0 0x7c0802a6 |
172 | #define MFLR_12 0x7d8802a6 | |
173 | #define MTCTR_0 0x7c0903a6 | |
174 | #define MTCTR_11 0x7d6903a6 | |
175 | #define MTLR_0 0x7c0803a6 | |
176 | #define NOP 0x60000000 | |
177 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
178 | |
179 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
180 | #define TP_OFFSET 0x7000 | |
181 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
182 | |
183 | /* The value of a defined global symbol. */ | |
184 | #define SYM_VAL(SYM) \ | |
185 | ((SYM)->root.u.def.section->output_section->vma \ | |
186 | + (SYM)->root.u.def.section->output_offset \ | |
187 | + (SYM)->root.u.def.value) | |
7fce784e | 188 | \f |
e47cd125 | 189 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 190 | |
8da6118f | 191 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
192 | /* This reloc does nothing. */ |
193 | HOWTO (R_PPC_NONE, /* type */ | |
194 | 0, /* rightshift */ | |
6346d5ca AM |
195 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
196 | 0, /* bitsize */ | |
b34976b6 | 197 | FALSE, /* pc_relative */ |
252b5132 | 198 | 0, /* bitpos */ |
86c95733 | 199 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
200 | bfd_elf_generic_reloc, /* special_function */ |
201 | "R_PPC_NONE", /* name */ | |
b34976b6 | 202 | FALSE, /* partial_inplace */ |
252b5132 RH |
203 | 0, /* src_mask */ |
204 | 0, /* dst_mask */ | |
b34976b6 | 205 | FALSE), /* pcrel_offset */ |
252b5132 RH |
206 | |
207 | /* A standard 32 bit relocation. */ | |
208 | HOWTO (R_PPC_ADDR32, /* type */ | |
209 | 0, /* rightshift */ | |
210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
211 | 32, /* bitsize */ | |
b34976b6 | 212 | FALSE, /* pc_relative */ |
252b5132 | 213 | 0, /* bitpos */ |
86c95733 | 214 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
215 | bfd_elf_generic_reloc, /* special_function */ |
216 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 217 | FALSE, /* partial_inplace */ |
252b5132 RH |
218 | 0, /* src_mask */ |
219 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 220 | FALSE), /* pcrel_offset */ |
252b5132 RH |
221 | |
222 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
223 | FIXME: we don't check that, we just clear them. */ | |
224 | HOWTO (R_PPC_ADDR24, /* type */ | |
225 | 0, /* rightshift */ | |
226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
227 | 26, /* bitsize */ | |
b34976b6 | 228 | FALSE, /* pc_relative */ |
252b5132 | 229 | 0, /* bitpos */ |
86c95733 | 230 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
231 | bfd_elf_generic_reloc, /* special_function */ |
232 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 233 | FALSE, /* partial_inplace */ |
252b5132 RH |
234 | 0, /* src_mask */ |
235 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 236 | FALSE), /* pcrel_offset */ |
252b5132 RH |
237 | |
238 | /* A standard 16 bit relocation. */ | |
239 | HOWTO (R_PPC_ADDR16, /* type */ | |
240 | 0, /* rightshift */ | |
241 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
242 | 16, /* bitsize */ | |
b34976b6 | 243 | FALSE, /* pc_relative */ |
252b5132 RH |
244 | 0, /* bitpos */ |
245 | complain_overflow_bitfield, /* complain_on_overflow */ | |
246 | bfd_elf_generic_reloc, /* special_function */ | |
247 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 248 | FALSE, /* partial_inplace */ |
252b5132 RH |
249 | 0, /* src_mask */ |
250 | 0xffff, /* dst_mask */ | |
b34976b6 | 251 | FALSE), /* pcrel_offset */ |
252b5132 RH |
252 | |
253 | /* A 16 bit relocation without overflow. */ | |
254 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
255 | 0, /* rightshift */ | |
256 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
257 | 16, /* bitsize */ | |
b34976b6 | 258 | FALSE, /* pc_relative */ |
252b5132 RH |
259 | 0, /* bitpos */ |
260 | complain_overflow_dont,/* complain_on_overflow */ | |
261 | bfd_elf_generic_reloc, /* special_function */ | |
262 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 263 | FALSE, /* partial_inplace */ |
252b5132 RH |
264 | 0, /* src_mask */ |
265 | 0xffff, /* dst_mask */ | |
b34976b6 | 266 | FALSE), /* pcrel_offset */ |
252b5132 RH |
267 | |
268 | /* The high order 16 bits of an address. */ | |
269 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
270 | 16, /* rightshift */ | |
271 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
272 | 16, /* bitsize */ | |
b34976b6 | 273 | FALSE, /* pc_relative */ |
252b5132 RH |
274 | 0, /* bitpos */ |
275 | complain_overflow_dont, /* complain_on_overflow */ | |
276 | bfd_elf_generic_reloc, /* special_function */ | |
277 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 278 | FALSE, /* partial_inplace */ |
252b5132 RH |
279 | 0, /* src_mask */ |
280 | 0xffff, /* dst_mask */ | |
b34976b6 | 281 | FALSE), /* pcrel_offset */ |
252b5132 RH |
282 | |
283 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 284 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
285 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
286 | 16, /* rightshift */ | |
287 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 16, /* bitsize */ | |
b34976b6 | 289 | FALSE, /* pc_relative */ |
252b5132 RH |
290 | 0, /* bitpos */ |
291 | complain_overflow_dont, /* complain_on_overflow */ | |
292 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
293 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 294 | FALSE, /* partial_inplace */ |
252b5132 RH |
295 | 0, /* src_mask */ |
296 | 0xffff, /* dst_mask */ | |
b34976b6 | 297 | FALSE), /* pcrel_offset */ |
252b5132 RH |
298 | |
299 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
300 | FIXME: we don't check that, we just clear them. */ | |
301 | HOWTO (R_PPC_ADDR14, /* type */ | |
302 | 0, /* rightshift */ | |
303 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
304 | 16, /* bitsize */ | |
b34976b6 | 305 | FALSE, /* pc_relative */ |
252b5132 | 306 | 0, /* bitpos */ |
86c95733 | 307 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
308 | bfd_elf_generic_reloc, /* special_function */ |
309 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 310 | FALSE, /* partial_inplace */ |
252b5132 RH |
311 | 0, /* src_mask */ |
312 | 0xfffc, /* dst_mask */ | |
b34976b6 | 313 | FALSE), /* pcrel_offset */ |
252b5132 RH |
314 | |
315 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
316 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 317 | bits must be zero. */ |
252b5132 RH |
318 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
319 | 0, /* rightshift */ | |
320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
321 | 16, /* bitsize */ | |
b34976b6 | 322 | FALSE, /* pc_relative */ |
252b5132 | 323 | 0, /* bitpos */ |
86c95733 | 324 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
325 | bfd_elf_generic_reloc, /* special_function */ |
326 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 327 | FALSE, /* partial_inplace */ |
252b5132 RH |
328 | 0, /* src_mask */ |
329 | 0xfffc, /* dst_mask */ | |
b34976b6 | 330 | FALSE), /* pcrel_offset */ |
252b5132 RH |
331 | |
332 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
333 | indicate that the branch is not expected to be taken. The lower | |
334 | two bits must be zero. */ | |
335 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
336 | 0, /* rightshift */ | |
337 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
338 | 16, /* bitsize */ | |
b34976b6 | 339 | FALSE, /* pc_relative */ |
252b5132 | 340 | 0, /* bitpos */ |
86c95733 | 341 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
342 | bfd_elf_generic_reloc, /* special_function */ |
343 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 344 | FALSE, /* partial_inplace */ |
252b5132 RH |
345 | 0, /* src_mask */ |
346 | 0xfffc, /* dst_mask */ | |
b34976b6 | 347 | FALSE), /* pcrel_offset */ |
252b5132 | 348 | |
8da6118f | 349 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
350 | HOWTO (R_PPC_REL24, /* type */ |
351 | 0, /* rightshift */ | |
352 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
353 | 26, /* bitsize */ | |
b34976b6 | 354 | TRUE, /* pc_relative */ |
252b5132 RH |
355 | 0, /* bitpos */ |
356 | complain_overflow_signed, /* complain_on_overflow */ | |
357 | bfd_elf_generic_reloc, /* special_function */ | |
358 | "R_PPC_REL24", /* name */ | |
b34976b6 | 359 | FALSE, /* partial_inplace */ |
252b5132 RH |
360 | 0, /* src_mask */ |
361 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 362 | TRUE), /* pcrel_offset */ |
252b5132 | 363 | |
8da6118f | 364 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
365 | HOWTO (R_PPC_REL14, /* type */ |
366 | 0, /* rightshift */ | |
367 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
368 | 16, /* bitsize */ | |
b34976b6 | 369 | TRUE, /* pc_relative */ |
252b5132 RH |
370 | 0, /* bitpos */ |
371 | complain_overflow_signed, /* complain_on_overflow */ | |
372 | bfd_elf_generic_reloc, /* special_function */ | |
373 | "R_PPC_REL14", /* name */ | |
b34976b6 | 374 | FALSE, /* partial_inplace */ |
252b5132 RH |
375 | 0, /* src_mask */ |
376 | 0xfffc, /* dst_mask */ | |
b34976b6 | 377 | TRUE), /* pcrel_offset */ |
252b5132 | 378 | |
8da6118f | 379 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
380 | the branch is expected to be taken. The lower two bits must be |
381 | zero. */ | |
382 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
383 | 0, /* rightshift */ | |
384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
385 | 16, /* bitsize */ | |
b34976b6 | 386 | TRUE, /* pc_relative */ |
252b5132 RH |
387 | 0, /* bitpos */ |
388 | complain_overflow_signed, /* complain_on_overflow */ | |
389 | bfd_elf_generic_reloc, /* special_function */ | |
390 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 391 | FALSE, /* partial_inplace */ |
252b5132 RH |
392 | 0, /* src_mask */ |
393 | 0xfffc, /* dst_mask */ | |
b34976b6 | 394 | TRUE), /* pcrel_offset */ |
252b5132 | 395 | |
8da6118f | 396 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
397 | the branch is not expected to be taken. The lower two bits must |
398 | be zero. */ | |
399 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
400 | 0, /* rightshift */ | |
401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
402 | 16, /* bitsize */ | |
b34976b6 | 403 | TRUE, /* pc_relative */ |
252b5132 RH |
404 | 0, /* bitpos */ |
405 | complain_overflow_signed, /* complain_on_overflow */ | |
406 | bfd_elf_generic_reloc, /* special_function */ | |
407 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 408 | FALSE, /* partial_inplace */ |
252b5132 RH |
409 | 0, /* src_mask */ |
410 | 0xfffc, /* dst_mask */ | |
b34976b6 | 411 | TRUE), /* pcrel_offset */ |
252b5132 RH |
412 | |
413 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
414 | symbol. */ | |
415 | HOWTO (R_PPC_GOT16, /* type */ | |
416 | 0, /* rightshift */ | |
417 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
418 | 16, /* bitsize */ | |
b34976b6 | 419 | FALSE, /* pc_relative */ |
252b5132 RH |
420 | 0, /* bitpos */ |
421 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 422 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 423 | "R_PPC_GOT16", /* name */ |
b34976b6 | 424 | FALSE, /* partial_inplace */ |
252b5132 RH |
425 | 0, /* src_mask */ |
426 | 0xffff, /* dst_mask */ | |
b34976b6 | 427 | FALSE), /* pcrel_offset */ |
252b5132 RH |
428 | |
429 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
430 | the symbol. */ | |
431 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
432 | 0, /* rightshift */ | |
433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
434 | 16, /* bitsize */ | |
b34976b6 | 435 | FALSE, /* pc_relative */ |
252b5132 RH |
436 | 0, /* bitpos */ |
437 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 438 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 439 | "R_PPC_GOT16_LO", /* name */ |
b34976b6 | 440 | FALSE, /* partial_inplace */ |
252b5132 RH |
441 | 0, /* src_mask */ |
442 | 0xffff, /* dst_mask */ | |
b34976b6 | 443 | FALSE), /* pcrel_offset */ |
252b5132 RH |
444 | |
445 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
446 | the symbol. */ | |
447 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
448 | 16, /* rightshift */ | |
449 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
450 | 16, /* bitsize */ | |
b34976b6 | 451 | FALSE, /* pc_relative */ |
252b5132 | 452 | 0, /* bitpos */ |
86c95733 | 453 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 454 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 455 | "R_PPC_GOT16_HI", /* name */ |
b34976b6 | 456 | FALSE, /* partial_inplace */ |
252b5132 RH |
457 | 0, /* src_mask */ |
458 | 0xffff, /* dst_mask */ | |
b34976b6 | 459 | FALSE), /* pcrel_offset */ |
252b5132 RH |
460 | |
461 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
462 | the symbol. */ | |
463 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
464 | 16, /* rightshift */ | |
465 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
466 | 16, /* bitsize */ | |
b34976b6 | 467 | FALSE, /* pc_relative */ |
252b5132 | 468 | 0, /* bitpos */ |
86c95733 | 469 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 470 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 471 | "R_PPC_GOT16_HA", /* name */ |
b34976b6 | 472 | FALSE, /* partial_inplace */ |
252b5132 RH |
473 | 0, /* src_mask */ |
474 | 0xffff, /* dst_mask */ | |
b34976b6 | 475 | FALSE), /* pcrel_offset */ |
252b5132 RH |
476 | |
477 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
478 | entry for the symbol. */ | |
479 | HOWTO (R_PPC_PLTREL24, /* type */ | |
480 | 0, /* rightshift */ | |
481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
482 | 26, /* bitsize */ | |
b34976b6 | 483 | TRUE, /* pc_relative */ |
252b5132 | 484 | 0, /* bitpos */ |
3ce51288 AM |
485 | complain_overflow_signed, /* complain_on_overflow */ |
486 | ppc_elf_unhandled_reloc, /* special_function */ | |
252b5132 | 487 | "R_PPC_PLTREL24", /* name */ |
b34976b6 | 488 | FALSE, /* partial_inplace */ |
252b5132 RH |
489 | 0, /* src_mask */ |
490 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 491 | TRUE), /* pcrel_offset */ |
252b5132 RH |
492 | |
493 | /* This is used only by the dynamic linker. The symbol should exist | |
494 | both in the object being run and in some shared library. The | |
495 | dynamic linker copies the data addressed by the symbol from the | |
496 | shared library into the object, because the object being | |
497 | run has to have the data at some particular address. */ | |
498 | HOWTO (R_PPC_COPY, /* type */ | |
499 | 0, /* rightshift */ | |
500 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
501 | 32, /* bitsize */ | |
b34976b6 | 502 | FALSE, /* pc_relative */ |
252b5132 | 503 | 0, /* bitpos */ |
86c95733 | 504 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 505 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 506 | "R_PPC_COPY", /* name */ |
b34976b6 | 507 | FALSE, /* partial_inplace */ |
252b5132 RH |
508 | 0, /* src_mask */ |
509 | 0, /* dst_mask */ | |
b34976b6 | 510 | FALSE), /* pcrel_offset */ |
252b5132 RH |
511 | |
512 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
513 | entries. */ | |
514 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
515 | 0, /* rightshift */ | |
516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 32, /* bitsize */ | |
b34976b6 | 518 | FALSE, /* pc_relative */ |
252b5132 | 519 | 0, /* bitpos */ |
86c95733 | 520 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 521 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 522 | "R_PPC_GLOB_DAT", /* name */ |
b34976b6 | 523 | FALSE, /* partial_inplace */ |
252b5132 RH |
524 | 0, /* src_mask */ |
525 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 526 | FALSE), /* pcrel_offset */ |
252b5132 RH |
527 | |
528 | /* Marks a procedure linkage table entry for a symbol. */ | |
529 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
530 | 0, /* rightshift */ | |
531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 32, /* bitsize */ | |
b34976b6 | 533 | FALSE, /* pc_relative */ |
252b5132 | 534 | 0, /* bitpos */ |
86c95733 | 535 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 536 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 537 | "R_PPC_JMP_SLOT", /* name */ |
b34976b6 | 538 | FALSE, /* partial_inplace */ |
252b5132 RH |
539 | 0, /* src_mask */ |
540 | 0, /* dst_mask */ | |
b34976b6 | 541 | FALSE), /* pcrel_offset */ |
252b5132 RH |
542 | |
543 | /* Used only by the dynamic linker. When the object is run, this | |
544 | longword is set to the load address of the object, plus the | |
545 | addend. */ | |
546 | HOWTO (R_PPC_RELATIVE, /* type */ | |
547 | 0, /* rightshift */ | |
548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 32, /* bitsize */ | |
b34976b6 | 550 | FALSE, /* pc_relative */ |
252b5132 | 551 | 0, /* bitpos */ |
86c95733 | 552 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
553 | bfd_elf_generic_reloc, /* special_function */ |
554 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 555 | FALSE, /* partial_inplace */ |
252b5132 RH |
556 | 0, /* src_mask */ |
557 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 558 | FALSE), /* pcrel_offset */ |
252b5132 RH |
559 | |
560 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
561 | object rather than the final value. Normally used for | |
562 | _GLOBAL_OFFSET_TABLE_. */ | |
563 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
564 | 0, /* rightshift */ | |
565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 26, /* bitsize */ | |
b34976b6 | 567 | TRUE, /* pc_relative */ |
252b5132 RH |
568 | 0, /* bitpos */ |
569 | complain_overflow_signed, /* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
571 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 572 | FALSE, /* partial_inplace */ |
252b5132 RH |
573 | 0, /* src_mask */ |
574 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 575 | TRUE), /* pcrel_offset */ |
252b5132 RH |
576 | |
577 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
578 | HOWTO (R_PPC_UADDR32, /* type */ | |
579 | 0, /* rightshift */ | |
580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
581 | 32, /* bitsize */ | |
b34976b6 | 582 | FALSE, /* pc_relative */ |
252b5132 | 583 | 0, /* bitpos */ |
86c95733 | 584 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
585 | bfd_elf_generic_reloc, /* special_function */ |
586 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 587 | FALSE, /* partial_inplace */ |
252b5132 RH |
588 | 0, /* src_mask */ |
589 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 590 | FALSE), /* pcrel_offset */ |
252b5132 RH |
591 | |
592 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
593 | HOWTO (R_PPC_UADDR16, /* type */ | |
594 | 0, /* rightshift */ | |
595 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
596 | 16, /* bitsize */ | |
b34976b6 | 597 | FALSE, /* pc_relative */ |
252b5132 RH |
598 | 0, /* bitpos */ |
599 | complain_overflow_bitfield, /* complain_on_overflow */ | |
600 | bfd_elf_generic_reloc, /* special_function */ | |
601 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 602 | FALSE, /* partial_inplace */ |
252b5132 RH |
603 | 0, /* src_mask */ |
604 | 0xffff, /* dst_mask */ | |
b34976b6 | 605 | FALSE), /* pcrel_offset */ |
252b5132 RH |
606 | |
607 | /* 32-bit PC relative */ | |
608 | HOWTO (R_PPC_REL32, /* type */ | |
609 | 0, /* rightshift */ | |
610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
611 | 32, /* bitsize */ | |
b34976b6 | 612 | TRUE, /* pc_relative */ |
252b5132 | 613 | 0, /* bitpos */ |
86c95733 | 614 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
615 | bfd_elf_generic_reloc, /* special_function */ |
616 | "R_PPC_REL32", /* name */ | |
b34976b6 | 617 | FALSE, /* partial_inplace */ |
252b5132 RH |
618 | 0, /* src_mask */ |
619 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 620 | TRUE), /* pcrel_offset */ |
252b5132 RH |
621 | |
622 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 623 | FIXME: not supported. */ |
252b5132 RH |
624 | HOWTO (R_PPC_PLT32, /* type */ |
625 | 0, /* rightshift */ | |
626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 32, /* bitsize */ | |
b34976b6 | 628 | FALSE, /* pc_relative */ |
252b5132 | 629 | 0, /* bitpos */ |
86c95733 | 630 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 631 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 632 | "R_PPC_PLT32", /* name */ |
b34976b6 | 633 | FALSE, /* partial_inplace */ |
252b5132 RH |
634 | 0, /* src_mask */ |
635 | 0, /* dst_mask */ | |
b34976b6 | 636 | FALSE), /* pcrel_offset */ |
252b5132 RH |
637 | |
638 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 639 | FIXME: not supported. */ |
252b5132 RH |
640 | HOWTO (R_PPC_PLTREL32, /* type */ |
641 | 0, /* rightshift */ | |
642 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
643 | 32, /* bitsize */ | |
b34976b6 | 644 | TRUE, /* pc_relative */ |
252b5132 | 645 | 0, /* bitpos */ |
86c95733 | 646 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 647 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 648 | "R_PPC_PLTREL32", /* name */ |
b34976b6 | 649 | FALSE, /* partial_inplace */ |
252b5132 RH |
650 | 0, /* src_mask */ |
651 | 0, /* dst_mask */ | |
b34976b6 | 652 | TRUE), /* pcrel_offset */ |
252b5132 RH |
653 | |
654 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
655 | the symbol. */ | |
656 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
657 | 0, /* rightshift */ | |
658 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
659 | 16, /* bitsize */ | |
b34976b6 | 660 | FALSE, /* pc_relative */ |
252b5132 RH |
661 | 0, /* bitpos */ |
662 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 663 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 664 | "R_PPC_PLT16_LO", /* name */ |
b34976b6 | 665 | FALSE, /* partial_inplace */ |
252b5132 RH |
666 | 0, /* src_mask */ |
667 | 0xffff, /* dst_mask */ | |
b34976b6 | 668 | FALSE), /* pcrel_offset */ |
252b5132 RH |
669 | |
670 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
671 | the symbol. */ | |
672 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
673 | 16, /* rightshift */ | |
674 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
675 | 16, /* bitsize */ | |
b34976b6 | 676 | FALSE, /* pc_relative */ |
252b5132 | 677 | 0, /* bitpos */ |
86c95733 | 678 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 679 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 680 | "R_PPC_PLT16_HI", /* name */ |
b34976b6 | 681 | FALSE, /* partial_inplace */ |
252b5132 RH |
682 | 0, /* src_mask */ |
683 | 0xffff, /* dst_mask */ | |
b34976b6 | 684 | FALSE), /* pcrel_offset */ |
252b5132 RH |
685 | |
686 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
687 | the symbol. */ | |
688 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
689 | 16, /* rightshift */ | |
690 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
691 | 16, /* bitsize */ | |
b34976b6 | 692 | FALSE, /* pc_relative */ |
252b5132 | 693 | 0, /* bitpos */ |
86c95733 | 694 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 695 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 696 | "R_PPC_PLT16_HA", /* name */ |
b34976b6 | 697 | FALSE, /* partial_inplace */ |
252b5132 RH |
698 | 0, /* src_mask */ |
699 | 0xffff, /* dst_mask */ | |
b34976b6 | 700 | FALSE), /* pcrel_offset */ |
252b5132 RH |
701 | |
702 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
703 | small data items. */ | |
704 | HOWTO (R_PPC_SDAREL16, /* type */ | |
705 | 0, /* rightshift */ | |
706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
707 | 16, /* bitsize */ | |
b34976b6 | 708 | FALSE, /* pc_relative */ |
252b5132 RH |
709 | 0, /* bitpos */ |
710 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 711 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 712 | "R_PPC_SDAREL16", /* name */ |
b34976b6 | 713 | FALSE, /* partial_inplace */ |
252b5132 RH |
714 | 0, /* src_mask */ |
715 | 0xffff, /* dst_mask */ | |
b34976b6 | 716 | FALSE), /* pcrel_offset */ |
252b5132 | 717 | |
c061c2d8 | 718 | /* 16-bit section relative relocation. */ |
252b5132 RH |
719 | HOWTO (R_PPC_SECTOFF, /* type */ |
720 | 0, /* rightshift */ | |
c061c2d8 AM |
721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
722 | 16, /* bitsize */ | |
b34976b6 | 723 | FALSE, /* pc_relative */ |
252b5132 | 724 | 0, /* bitpos */ |
86c95733 | 725 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 726 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 727 | "R_PPC_SECTOFF", /* name */ |
b34976b6 | 728 | FALSE, /* partial_inplace */ |
252b5132 | 729 | 0, /* src_mask */ |
c061c2d8 | 730 | 0xffff, /* dst_mask */ |
b34976b6 | 731 | FALSE), /* pcrel_offset */ |
252b5132 | 732 | |
c3668558 | 733 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
734 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
735 | 0, /* rightshift */ | |
736 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 16, /* bitsize */ | |
b34976b6 | 738 | FALSE, /* pc_relative */ |
252b5132 RH |
739 | 0, /* bitpos */ |
740 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 741 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 742 | "R_PPC_SECTOFF_LO", /* name */ |
b34976b6 | 743 | FALSE, /* partial_inplace */ |
252b5132 RH |
744 | 0, /* src_mask */ |
745 | 0xffff, /* dst_mask */ | |
b34976b6 | 746 | FALSE), /* pcrel_offset */ |
252b5132 | 747 | |
c3668558 | 748 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
749 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
750 | 16, /* rightshift */ | |
751 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
752 | 16, /* bitsize */ | |
b34976b6 | 753 | FALSE, /* pc_relative */ |
252b5132 | 754 | 0, /* bitpos */ |
86c95733 | 755 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 756 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 757 | "R_PPC_SECTOFF_HI", /* name */ |
b34976b6 | 758 | FALSE, /* partial_inplace */ |
252b5132 RH |
759 | 0, /* src_mask */ |
760 | 0xffff, /* dst_mask */ | |
b34976b6 | 761 | FALSE), /* pcrel_offset */ |
252b5132 | 762 | |
c3668558 | 763 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
764 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
765 | 16, /* rightshift */ | |
766 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
767 | 16, /* bitsize */ | |
b34976b6 | 768 | FALSE, /* pc_relative */ |
252b5132 | 769 | 0, /* bitpos */ |
86c95733 | 770 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 771 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 772 | "R_PPC_SECTOFF_HA", /* name */ |
b34976b6 | 773 | FALSE, /* partial_inplace */ |
252b5132 RH |
774 | 0, /* src_mask */ |
775 | 0xffff, /* dst_mask */ | |
b34976b6 | 776 | FALSE), /* pcrel_offset */ |
252b5132 | 777 | |
727fc41e | 778 | /* Marker relocs for TLS. */ |
7619e7c7 | 779 | HOWTO (R_PPC_TLS, |
252b5132 RH |
780 | 0, /* rightshift */ |
781 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
782 | 32, /* bitsize */ | |
b34976b6 | 783 | FALSE, /* pc_relative */ |
252b5132 | 784 | 0, /* bitpos */ |
7619e7c7 | 785 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 786 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
787 | "R_PPC_TLS", /* name */ |
788 | FALSE, /* partial_inplace */ | |
789 | 0, /* src_mask */ | |
790 | 0, /* dst_mask */ | |
791 | FALSE), /* pcrel_offset */ | |
792 | ||
727fc41e AM |
793 | HOWTO (R_PPC_TLSGD, |
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_TLSGD", /* name */ | |
802 | FALSE, /* partial_inplace */ | |
803 | 0, /* src_mask */ | |
804 | 0, /* dst_mask */ | |
805 | FALSE), /* pcrel_offset */ | |
806 | ||
807 | HOWTO (R_PPC_TLSLD, | |
808 | 0, /* rightshift */ | |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 32, /* bitsize */ | |
811 | FALSE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
815 | "R_PPC_TLSLD", /* name */ | |
816 | FALSE, /* partial_inplace */ | |
817 | 0, /* src_mask */ | |
818 | 0, /* dst_mask */ | |
819 | FALSE), /* pcrel_offset */ | |
820 | ||
7619e7c7 AM |
821 | /* Computes the load module index of the load module that contains the |
822 | definition of its TLS sym. */ | |
823 | HOWTO (R_PPC_DTPMOD32, | |
824 | 0, /* rightshift */ | |
825 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
826 | 32, /* bitsize */ | |
827 | FALSE, /* pc_relative */ | |
828 | 0, /* bitpos */ | |
829 | complain_overflow_dont, /* complain_on_overflow */ | |
830 | ppc_elf_unhandled_reloc, /* special_function */ | |
831 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 832 | FALSE, /* partial_inplace */ |
252b5132 RH |
833 | 0, /* src_mask */ |
834 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 835 | FALSE), /* pcrel_offset */ |
252b5132 | 836 | |
7619e7c7 AM |
837 | /* Computes a dtv-relative displacement, the difference between the value |
838 | of sym+add and the base address of the thread-local storage block that | |
839 | contains the definition of sym, minus 0x8000. */ | |
840 | HOWTO (R_PPC_DTPREL32, | |
841 | 0, /* rightshift */ | |
842 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
843 | 32, /* bitsize */ | |
844 | FALSE, /* pc_relative */ | |
845 | 0, /* bitpos */ | |
846 | complain_overflow_dont, /* complain_on_overflow */ | |
847 | ppc_elf_unhandled_reloc, /* special_function */ | |
848 | "R_PPC_DTPREL32", /* name */ | |
849 | FALSE, /* partial_inplace */ | |
850 | 0, /* src_mask */ | |
851 | 0xffffffff, /* dst_mask */ | |
852 | FALSE), /* pcrel_offset */ | |
853 | ||
854 | /* A 16 bit dtprel reloc. */ | |
855 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
856 | 0, /* rightshift */ |
857 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
858 | 16, /* bitsize */ | |
b34976b6 | 859 | FALSE, /* pc_relative */ |
252b5132 | 860 | 0, /* bitpos */ |
7619e7c7 AM |
861 | complain_overflow_signed, /* complain_on_overflow */ |
862 | ppc_elf_unhandled_reloc, /* special_function */ | |
863 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 864 | FALSE, /* partial_inplace */ |
252b5132 RH |
865 | 0, /* src_mask */ |
866 | 0xffff, /* dst_mask */ | |
b34976b6 | 867 | FALSE), /* pcrel_offset */ |
252b5132 | 868 | |
7619e7c7 AM |
869 | /* Like DTPREL16, but no overflow. */ |
870 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
871 | 0, /* rightshift */ |
872 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 16, /* bitsize */ | |
b34976b6 | 874 | FALSE, /* pc_relative */ |
252b5132 | 875 | 0, /* bitpos */ |
7619e7c7 AM |
876 | complain_overflow_dont, /* complain_on_overflow */ |
877 | ppc_elf_unhandled_reloc, /* special_function */ | |
878 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 879 | FALSE, /* partial_inplace */ |
252b5132 RH |
880 | 0, /* src_mask */ |
881 | 0xffff, /* dst_mask */ | |
b34976b6 | 882 | FALSE), /* pcrel_offset */ |
252b5132 | 883 | |
7619e7c7 AM |
884 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
885 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
886 | 16, /* rightshift */ |
887 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 16, /* bitsize */ | |
b34976b6 | 889 | FALSE, /* pc_relative */ |
252b5132 RH |
890 | 0, /* bitpos */ |
891 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
892 | ppc_elf_unhandled_reloc, /* special_function */ |
893 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 894 | FALSE, /* partial_inplace */ |
252b5132 RH |
895 | 0, /* src_mask */ |
896 | 0xffff, /* dst_mask */ | |
b34976b6 | 897 | FALSE), /* pcrel_offset */ |
252b5132 | 898 | |
7619e7c7 AM |
899 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
900 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
901 | 16, /* rightshift */ |
902 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
903 | 16, /* bitsize */ | |
b34976b6 | 904 | FALSE, /* pc_relative */ |
252b5132 RH |
905 | 0, /* bitpos */ |
906 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
907 | ppc_elf_unhandled_reloc, /* special_function */ |
908 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 909 | FALSE, /* partial_inplace */ |
252b5132 RH |
910 | 0, /* src_mask */ |
911 | 0xffff, /* dst_mask */ | |
b34976b6 | 912 | FALSE), /* pcrel_offset */ |
252b5132 | 913 | |
7619e7c7 AM |
914 | /* Computes a tp-relative displacement, the difference between the value of |
915 | sym+add and the value of the thread pointer (r13). */ | |
916 | HOWTO (R_PPC_TPREL32, | |
917 | 0, /* rightshift */ | |
918 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
919 | 32, /* bitsize */ | |
920 | FALSE, /* pc_relative */ | |
921 | 0, /* bitpos */ | |
922 | complain_overflow_dont, /* complain_on_overflow */ | |
923 | ppc_elf_unhandled_reloc, /* special_function */ | |
924 | "R_PPC_TPREL32", /* name */ | |
925 | FALSE, /* partial_inplace */ | |
926 | 0, /* src_mask */ | |
927 | 0xffffffff, /* dst_mask */ | |
928 | FALSE), /* pcrel_offset */ | |
929 | ||
930 | /* A 16 bit tprel reloc. */ | |
931 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
932 | 0, /* rightshift */ |
933 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
934 | 16, /* bitsize */ | |
b34976b6 | 935 | FALSE, /* pc_relative */ |
252b5132 | 936 | 0, /* bitpos */ |
7619e7c7 AM |
937 | complain_overflow_signed, /* complain_on_overflow */ |
938 | ppc_elf_unhandled_reloc, /* special_function */ | |
939 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 940 | FALSE, /* partial_inplace */ |
252b5132 RH |
941 | 0, /* src_mask */ |
942 | 0xffff, /* dst_mask */ | |
b34976b6 | 943 | FALSE), /* pcrel_offset */ |
252b5132 | 944 | |
7619e7c7 AM |
945 | /* Like TPREL16, but no overflow. */ |
946 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
947 | 0, /* rightshift */ |
948 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
949 | 16, /* bitsize */ | |
b34976b6 | 950 | FALSE, /* pc_relative */ |
252b5132 | 951 | 0, /* bitpos */ |
7619e7c7 AM |
952 | complain_overflow_dont, /* complain_on_overflow */ |
953 | ppc_elf_unhandled_reloc, /* special_function */ | |
954 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 955 | FALSE, /* partial_inplace */ |
252b5132 RH |
956 | 0, /* src_mask */ |
957 | 0xffff, /* dst_mask */ | |
b34976b6 | 958 | FALSE), /* pcrel_offset */ |
252b5132 | 959 | |
7619e7c7 AM |
960 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
961 | HOWTO (R_PPC_TPREL16_HI, | |
962 | 16, /* rightshift */ | |
963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
964 | 16, /* bitsize */ | |
965 | FALSE, /* pc_relative */ | |
966 | 0, /* bitpos */ | |
967 | complain_overflow_dont, /* complain_on_overflow */ | |
968 | ppc_elf_unhandled_reloc, /* special_function */ | |
969 | "R_PPC_TPREL16_HI", /* name */ | |
970 | FALSE, /* partial_inplace */ | |
971 | 0, /* src_mask */ | |
972 | 0xffff, /* dst_mask */ | |
973 | FALSE), /* pcrel_offset */ | |
974 | ||
975 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
976 | HOWTO (R_PPC_TPREL16_HA, | |
977 | 16, /* rightshift */ | |
978 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
979 | 16, /* bitsize */ | |
980 | FALSE, /* pc_relative */ | |
981 | 0, /* bitpos */ | |
982 | complain_overflow_dont, /* complain_on_overflow */ | |
983 | ppc_elf_unhandled_reloc, /* special_function */ | |
984 | "R_PPC_TPREL16_HA", /* name */ | |
985 | FALSE, /* partial_inplace */ | |
986 | 0, /* src_mask */ | |
987 | 0xffff, /* dst_mask */ | |
988 | FALSE), /* pcrel_offset */ | |
989 | ||
990 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
991 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
992 | to the first entry. */ | |
993 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
994 | 0, /* rightshift */ |
995 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
996 | 16, /* bitsize */ | |
b34976b6 | 997 | FALSE, /* pc_relative */ |
252b5132 RH |
998 | 0, /* bitpos */ |
999 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1000 | ppc_elf_unhandled_reloc, /* special_function */ |
1001 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 1002 | FALSE, /* partial_inplace */ |
252b5132 RH |
1003 | 0, /* src_mask */ |
1004 | 0xffff, /* dst_mask */ | |
b34976b6 | 1005 | FALSE), /* pcrel_offset */ |
252b5132 | 1006 | |
7619e7c7 AM |
1007 | /* Like GOT_TLSGD16, but no overflow. */ |
1008 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1009 | 0, /* rightshift */ |
7619e7c7 | 1010 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1011 | 16, /* bitsize */ |
b34976b6 | 1012 | FALSE, /* pc_relative */ |
252b5132 | 1013 | 0, /* bitpos */ |
7619e7c7 AM |
1014 | complain_overflow_dont, /* complain_on_overflow */ |
1015 | ppc_elf_unhandled_reloc, /* special_function */ | |
1016 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1017 | FALSE, /* partial_inplace */ |
252b5132 RH |
1018 | 0, /* src_mask */ |
1019 | 0xffff, /* dst_mask */ | |
b34976b6 | 1020 | FALSE), /* pcrel_offset */ |
252b5132 | 1021 | |
7619e7c7 AM |
1022 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1023 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1024 | 16, /* rightshift */ | |
1025 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1026 | 16, /* bitsize */ | |
1027 | FALSE, /* pc_relative */ | |
1028 | 0, /* bitpos */ | |
1029 | complain_overflow_dont, /* complain_on_overflow */ | |
1030 | ppc_elf_unhandled_reloc, /* special_function */ | |
1031 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1032 | FALSE, /* partial_inplace */ | |
1033 | 0, /* src_mask */ | |
1034 | 0xffff, /* dst_mask */ | |
1035 | FALSE), /* pcrel_offset */ | |
252b5132 | 1036 | |
7619e7c7 AM |
1037 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1038 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1039 | 16, /* rightshift */ | |
1040 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1041 | 16, /* bitsize */ | |
1042 | FALSE, /* pc_relative */ | |
1043 | 0, /* bitpos */ | |
1044 | complain_overflow_dont, /* complain_on_overflow */ | |
1045 | ppc_elf_unhandled_reloc, /* special_function */ | |
1046 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1047 | FALSE, /* partial_inplace */ | |
1048 | 0, /* src_mask */ | |
1049 | 0xffff, /* dst_mask */ | |
1050 | FALSE), /* pcrel_offset */ | |
1051 | ||
1052 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1053 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1054 | first entry. */ | |
1055 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1056 | 0, /* rightshift */ |
1057 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1058 | 16, /* bitsize */ | |
7619e7c7 | 1059 | FALSE, /* pc_relative */ |
252b5132 RH |
1060 | 0, /* bitpos */ |
1061 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1062 | ppc_elf_unhandled_reloc, /* special_function */ |
1063 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1064 | FALSE, /* partial_inplace */ |
252b5132 RH |
1065 | 0, /* src_mask */ |
1066 | 0xffff, /* dst_mask */ | |
b34976b6 | 1067 | FALSE), /* pcrel_offset */ |
252b5132 | 1068 | |
7619e7c7 AM |
1069 | /* Like GOT_TLSLD16, but no overflow. */ |
1070 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1071 | 0, /* rightshift */ |
7619e7c7 AM |
1072 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1073 | 16, /* bitsize */ | |
b34976b6 | 1074 | FALSE, /* pc_relative */ |
252b5132 RH |
1075 | 0, /* bitpos */ |
1076 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1077 | ppc_elf_unhandled_reloc, /* special_function */ |
1078 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1079 | FALSE, /* partial_inplace */ |
252b5132 | 1080 | 0, /* src_mask */ |
7619e7c7 | 1081 | 0xffff, /* dst_mask */ |
b34976b6 | 1082 | FALSE), /* pcrel_offset */ |
252b5132 | 1083 | |
7619e7c7 AM |
1084 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1085 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1086 | 16, /* rightshift */ | |
1087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 16, /* bitsize */ | |
b34976b6 | 1089 | FALSE, /* pc_relative */ |
252b5132 RH |
1090 | 0, /* bitpos */ |
1091 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1092 | ppc_elf_unhandled_reloc, /* special_function */ |
1093 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1094 | FALSE, /* partial_inplace */ |
252b5132 | 1095 | 0, /* src_mask */ |
7619e7c7 | 1096 | 0xffff, /* dst_mask */ |
b34976b6 | 1097 | FALSE), /* pcrel_offset */ |
252b5132 | 1098 | |
7619e7c7 AM |
1099 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1100 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1101 | 16, /* rightshift */ | |
1102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1103 | 16, /* bitsize */ | |
1104 | FALSE, /* pc_relative */ | |
1105 | 0, /* bitpos */ | |
1106 | complain_overflow_dont, /* complain_on_overflow */ | |
1107 | ppc_elf_unhandled_reloc, /* special_function */ | |
1108 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1109 | FALSE, /* partial_inplace */ | |
1110 | 0, /* src_mask */ | |
1111 | 0xffff, /* dst_mask */ | |
1112 | FALSE), /* pcrel_offset */ | |
1113 | ||
1114 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1115 | the offset to the entry. */ | |
1116 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1117 | 0, /* rightshift */ |
1118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
b34976b6 | 1120 | FALSE, /* pc_relative */ |
252b5132 RH |
1121 | 0, /* bitpos */ |
1122 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1123 | ppc_elf_unhandled_reloc, /* special_function */ |
1124 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1125 | FALSE, /* partial_inplace */ |
252b5132 RH |
1126 | 0, /* src_mask */ |
1127 | 0xffff, /* dst_mask */ | |
b34976b6 | 1128 | FALSE), /* pcrel_offset */ |
252b5132 | 1129 | |
7619e7c7 AM |
1130 | /* Like GOT_DTPREL16, but no overflow. */ |
1131 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_dont, /* complain_on_overflow */ | |
1138 | ppc_elf_unhandled_reloc, /* special_function */ | |
1139 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xffff, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
252b5132 | 1144 | |
7619e7c7 AM |
1145 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1146 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1147 | 16, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont, /* complain_on_overflow */ | |
1153 | ppc_elf_unhandled_reloc, /* special_function */ | |
1154 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xffff, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
252b5132 | 1159 | |
7619e7c7 AM |
1160 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1161 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1162 | 16, /* rightshift */ | |
1163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 16, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont, /* complain_on_overflow */ | |
1168 | ppc_elf_unhandled_reloc, /* special_function */ | |
1169 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0xffff, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
c3668558 | 1174 | |
7619e7c7 AM |
1175 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1176 | offset to the entry. */ | |
1177 | HOWTO (R_PPC_GOT_TPREL16, | |
1178 | 0, /* rightshift */ | |
1179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1180 | 16, /* bitsize */ | |
1181 | FALSE, /* pc_relative */ | |
1182 | 0, /* bitpos */ | |
1183 | complain_overflow_signed, /* complain_on_overflow */ | |
1184 | ppc_elf_unhandled_reloc, /* special_function */ | |
1185 | "R_PPC_GOT_TPREL16", /* name */ | |
1186 | FALSE, /* partial_inplace */ | |
1187 | 0, /* src_mask */ | |
1188 | 0xffff, /* dst_mask */ | |
1189 | FALSE), /* pcrel_offset */ | |
1190 | ||
1191 | /* Like GOT_TPREL16, but no overflow. */ | |
1192 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1193 | 0, /* rightshift */ | |
1194 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1195 | 16, /* bitsize */ | |
1196 | FALSE, /* pc_relative */ | |
1197 | 0, /* bitpos */ | |
1198 | complain_overflow_dont, /* complain_on_overflow */ | |
1199 | ppc_elf_unhandled_reloc, /* special_function */ | |
1200 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1201 | FALSE, /* partial_inplace */ | |
1202 | 0, /* src_mask */ | |
1203 | 0xffff, /* dst_mask */ | |
1204 | FALSE), /* pcrel_offset */ | |
1205 | ||
1206 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1207 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1208 | 16, /* rightshift */ | |
1209 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 16, /* bitsize */ | |
1211 | FALSE, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_dont, /* complain_on_overflow */ | |
1214 | ppc_elf_unhandled_reloc, /* special_function */ | |
1215 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1216 | FALSE, /* partial_inplace */ | |
1217 | 0, /* src_mask */ | |
1218 | 0xffff, /* dst_mask */ | |
1219 | FALSE), /* pcrel_offset */ | |
1220 | ||
1221 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1222 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1223 | 16, /* rightshift */ | |
1224 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1225 | 16, /* bitsize */ | |
1226 | FALSE, /* pc_relative */ | |
1227 | 0, /* bitpos */ | |
1228 | complain_overflow_dont, /* complain_on_overflow */ | |
1229 | ppc_elf_unhandled_reloc, /* special_function */ | |
1230 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1231 | FALSE, /* partial_inplace */ | |
1232 | 0, /* src_mask */ | |
1233 | 0xffff, /* dst_mask */ | |
1234 | FALSE), /* pcrel_offset */ | |
1235 | ||
1236 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1237 | in the SVR4 ELF ABI. */ | |
1238 | ||
1239 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1240 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1241 | 0, /* rightshift */ | |
1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1243 | 32, /* bitsize */ | |
1244 | FALSE, /* pc_relative */ | |
1245 | 0, /* bitpos */ | |
86c95733 | 1246 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1247 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1248 | "R_PPC_EMB_NADDR32", /* name */ |
1249 | FALSE, /* partial_inplace */ | |
1250 | 0, /* src_mask */ | |
1251 | 0xffffffff, /* dst_mask */ | |
1252 | FALSE), /* pcrel_offset */ | |
1253 | ||
1254 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1255 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1256 | 0, /* rightshift */ | |
1257 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1258 | 16, /* bitsize */ | |
1259 | FALSE, /* pc_relative */ | |
1260 | 0, /* bitpos */ | |
86c95733 | 1261 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1262 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1263 | "R_PPC_EMB_NADDR16", /* name */ |
1264 | FALSE, /* partial_inplace */ | |
1265 | 0, /* src_mask */ | |
1266 | 0xffff, /* dst_mask */ | |
1267 | FALSE), /* pcrel_offset */ | |
1268 | ||
1269 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1270 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1271 | 0, /* rightshift */ | |
1272 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1273 | 16, /* bitsize */ | |
1274 | FALSE, /* pc_relative */ | |
1275 | 0, /* bitpos */ | |
1276 | complain_overflow_dont,/* complain_on_overflow */ | |
3ce51288 | 1277 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1278 | "R_PPC_EMB_ADDR16_LO", /* name */ |
1279 | FALSE, /* partial_inplace */ | |
1280 | 0, /* src_mask */ | |
1281 | 0xffff, /* dst_mask */ | |
1282 | FALSE), /* pcrel_offset */ | |
1283 | ||
1284 | /* The high order 16 bits of the addend minus the symbol. */ | |
1285 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1286 | 16, /* rightshift */ | |
1287 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1288 | 16, /* bitsize */ | |
1289 | FALSE, /* pc_relative */ | |
1290 | 0, /* bitpos */ | |
1291 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1292 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1293 | "R_PPC_EMB_NADDR16_HI", /* name */ |
1294 | FALSE, /* partial_inplace */ | |
1295 | 0, /* src_mask */ | |
1296 | 0xffff, /* dst_mask */ | |
1297 | FALSE), /* pcrel_offset */ | |
1298 | ||
1299 | /* The high order 16 bits of the result of the addend minus the address, | |
1300 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1301 | is negative. */ | |
1302 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1303 | 16, /* rightshift */ | |
1304 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1305 | 16, /* bitsize */ | |
1306 | FALSE, /* pc_relative */ | |
1307 | 0, /* bitpos */ | |
1308 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1309 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1310 | "R_PPC_EMB_NADDR16_HA", /* name */ |
1311 | FALSE, /* partial_inplace */ | |
1312 | 0, /* src_mask */ | |
1313 | 0xffff, /* dst_mask */ | |
1314 | FALSE), /* pcrel_offset */ | |
1315 | ||
1316 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1317 | address in the .sdata section, and returning the offset from | |
1318 | _SDA_BASE_ for that relocation. */ | |
1319 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1320 | 0, /* rightshift */ | |
1321 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1322 | 16, /* bitsize */ | |
1323 | FALSE, /* pc_relative */ | |
1324 | 0, /* bitpos */ | |
bd6c6e2b | 1325 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1326 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1327 | "R_PPC_EMB_SDAI16", /* name */ |
1328 | FALSE, /* partial_inplace */ | |
1329 | 0, /* src_mask */ | |
1330 | 0xffff, /* dst_mask */ | |
1331 | FALSE), /* pcrel_offset */ | |
1332 | ||
1333 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1334 | address in the .sdata2 section, and returning the offset from | |
1335 | _SDA2_BASE_ for that relocation. */ | |
1336 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1337 | 0, /* rightshift */ | |
1338 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1339 | 16, /* bitsize */ | |
1340 | FALSE, /* pc_relative */ | |
1341 | 0, /* bitpos */ | |
bd6c6e2b | 1342 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1343 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1344 | "R_PPC_EMB_SDA2I16", /* name */ |
1345 | FALSE, /* partial_inplace */ | |
1346 | 0, /* src_mask */ | |
1347 | 0xffff, /* dst_mask */ | |
1348 | FALSE), /* pcrel_offset */ | |
1349 | ||
1350 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1351 | small data items. */ | |
1352 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1353 | 0, /* rightshift */ | |
1354 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1355 | 16, /* bitsize */ | |
1356 | FALSE, /* pc_relative */ | |
1357 | 0, /* bitpos */ | |
1358 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1359 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1360 | "R_PPC_EMB_SDA2REL", /* name */ |
1361 | FALSE, /* partial_inplace */ | |
1362 | 0, /* src_mask */ | |
1363 | 0xffff, /* dst_mask */ | |
1364 | FALSE), /* pcrel_offset */ | |
1365 | ||
1366 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1367 | signed offset from the appropriate base, and filling in the register | |
1368 | field with the appropriate register (0, 2, or 13). */ | |
1369 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1370 | 0, /* rightshift */ | |
1371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 16, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1376 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1377 | "R_PPC_EMB_SDA21", /* name */ |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0, /* src_mask */ | |
1380 | 0xffff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
1382 | ||
1383 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1384 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1385 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1386 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1387 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1388 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1389 | ||
1390 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1391 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1392 | register field with the appropriate register (0, 2, or 13). */ | |
1393 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1394 | 0, /* rightshift */ | |
1395 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1396 | 16, /* bitsize */ | |
ddfd6795 | 1397 | FALSE, /* pc_relative */ |
25dbc73a AM |
1398 | 0, /* bitpos */ |
1399 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1400 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1401 | "R_PPC_EMB_RELSDA", /* name */ |
1402 | FALSE, /* partial_inplace */ | |
1403 | 0, /* src_mask */ | |
1404 | 0xffff, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
b9c361e0 JL |
1407 | /* A relative 8 bit branch. */ |
1408 | HOWTO (R_PPC_VLE_REL8, /* type */ | |
1409 | 1, /* rightshift */ | |
1410 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1411 | 8, /* bitsize */ | |
1412 | TRUE, /* pc_relative */ | |
1413 | 0, /* bitpos */ | |
1414 | complain_overflow_signed, /* complain_on_overflow */ | |
1415 | bfd_elf_generic_reloc, /* special_function */ | |
1416 | "R_PPC_VLE_REL8", /* name */ | |
1417 | FALSE, /* partial_inplace */ | |
1418 | 0, /* src_mask */ | |
1419 | 0xff, /* dst_mask */ | |
1420 | TRUE), /* pcrel_offset */ | |
68ffbac6 | 1421 | |
b9c361e0 JL |
1422 | /* A relative 15 bit branch. */ |
1423 | HOWTO (R_PPC_VLE_REL15, /* type */ | |
1424 | 1, /* rightshift */ | |
1425 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1426 | 15, /* bitsize */ | |
1427 | TRUE, /* pc_relative */ | |
1428 | 1, /* bitpos */ | |
1429 | complain_overflow_signed, /* complain_on_overflow */ | |
1430 | bfd_elf_generic_reloc, /* special_function */ | |
1431 | "R_PPC_VLE_REL15", /* name */ | |
1432 | FALSE, /* partial_inplace */ | |
1433 | 0, /* src_mask */ | |
dfdaec14 | 1434 | 0xfffe, /* dst_mask */ |
b9c361e0 JL |
1435 | TRUE), /* pcrel_offset */ |
1436 | ||
68ffbac6 | 1437 | /* A relative 24 bit branch. */ |
b9c361e0 JL |
1438 | HOWTO (R_PPC_VLE_REL24, /* type */ |
1439 | 1, /* rightshift */ | |
1440 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1441 | 24, /* bitsize */ | |
1442 | TRUE, /* pc_relative */ | |
1443 | 1, /* bitpos */ | |
1444 | complain_overflow_signed, /* complain_on_overflow */ | |
1445 | bfd_elf_generic_reloc, /* special_function */ | |
1446 | "R_PPC_VLE_REL24", /* name */ | |
1447 | FALSE, /* partial_inplace */ | |
1448 | 0, /* src_mask */ | |
1449 | 0x1fffffe, /* dst_mask */ | |
1450 | TRUE), /* pcrel_offset */ | |
1451 | ||
1452 | /* The 16 LSBS in split16a format. */ | |
1453 | HOWTO (R_PPC_VLE_LO16A, /* type */ | |
1454 | 0, /* rightshift */ | |
1455 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1456 | 16, /* bitsize */ |
bdaacd3a | 1457 | FALSE, /* pc_relative */ |
b9c361e0 | 1458 | 0, /* bitpos */ |
86c95733 | 1459 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1460 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1461 | "R_PPC_VLE_LO16A", /* name */ |
1462 | FALSE, /* partial_inplace */ | |
1463 | 0, /* src_mask */ | |
08dc996f | 1464 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1465 | FALSE), /* pcrel_offset */ |
1466 | ||
1467 | /* The 16 LSBS in split16d format. */ | |
1468 | HOWTO (R_PPC_VLE_LO16D, /* type */ | |
1469 | 0, /* rightshift */ | |
1470 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1471 | 16, /* bitsize */ |
b9c361e0 JL |
1472 | FALSE, /* pc_relative */ |
1473 | 0, /* bitpos */ | |
86c95733 | 1474 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1475 | ppc_elf_unhandled_reloc, /* special_function */ |
1476 | "R_PPC_VLE_LO16D", /* name */ | |
b9c361e0 JL |
1477 | FALSE, /* partial_inplace */ |
1478 | 0, /* src_mask */ | |
5499c7c7 | 1479 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1480 | FALSE), /* pcrel_offset */ |
1481 | ||
1482 | /* Bits 16-31 split16a format. */ | |
1483 | HOWTO (R_PPC_VLE_HI16A, /* type */ | |
86c95733 | 1484 | 16, /* rightshift */ |
b9c361e0 | 1485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1486 | 16, /* bitsize */ |
b9c361e0 JL |
1487 | FALSE, /* pc_relative */ |
1488 | 0, /* bitpos */ | |
86c95733 | 1489 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1490 | ppc_elf_unhandled_reloc, /* special_function */ |
1491 | "R_PPC_VLE_HI16A", /* name */ | |
b9c361e0 JL |
1492 | FALSE, /* partial_inplace */ |
1493 | 0, /* src_mask */ | |
08dc996f | 1494 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1495 | FALSE), /* pcrel_offset */ |
1496 | ||
1497 | /* Bits 16-31 split16d format. */ | |
1498 | HOWTO (R_PPC_VLE_HI16D, /* type */ | |
86c95733 | 1499 | 16, /* rightshift */ |
b9c361e0 | 1500 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1501 | 16, /* bitsize */ |
b9c361e0 JL |
1502 | FALSE, /* pc_relative */ |
1503 | 0, /* bitpos */ | |
86c95733 | 1504 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1505 | ppc_elf_unhandled_reloc, /* special_function */ |
1506 | "R_PPC_VLE_HI16D", /* name */ | |
b9c361e0 JL |
1507 | FALSE, /* partial_inplace */ |
1508 | 0, /* src_mask */ | |
5499c7c7 | 1509 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1510 | FALSE), /* pcrel_offset */ |
1511 | ||
1512 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
1513 | HOWTO (R_PPC_VLE_HA16A, /* type */ | |
86c95733 | 1514 | 16, /* rightshift */ |
b9c361e0 | 1515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1516 | 16, /* bitsize */ |
b9c361e0 JL |
1517 | FALSE, /* pc_relative */ |
1518 | 0, /* bitpos */ | |
86c95733 | 1519 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1520 | ppc_elf_unhandled_reloc, /* special_function */ |
1521 | "R_PPC_VLE_HA16A", /* name */ | |
b9c361e0 JL |
1522 | FALSE, /* partial_inplace */ |
1523 | 0, /* src_mask */ | |
08dc996f | 1524 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1525 | FALSE), /* pcrel_offset */ |
1526 | ||
1527 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
1528 | HOWTO (R_PPC_VLE_HA16D, /* type */ | |
86c95733 | 1529 | 16, /* rightshift */ |
b9c361e0 | 1530 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1531 | 16, /* bitsize */ |
b9c361e0 JL |
1532 | FALSE, /* pc_relative */ |
1533 | 0, /* bitpos */ | |
86c95733 | 1534 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1535 | ppc_elf_unhandled_reloc, /* special_function */ |
1536 | "R_PPC_VLE_HA16D", /* name */ | |
b9c361e0 JL |
1537 | FALSE, /* partial_inplace */ |
1538 | 0, /* src_mask */ | |
5499c7c7 | 1539 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1540 | FALSE), /* pcrel_offset */ |
1541 | ||
86c95733 AM |
1542 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
1543 | instructions. If the register base is 0 then the linker changes | |
1544 | the e_add16i to an e_li instruction. */ | |
1545 | HOWTO (R_PPC_VLE_SDA21, /* type */ | |
b9c361e0 JL |
1546 | 0, /* rightshift */ |
1547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1548 | 16, /* bitsize */ |
b9c361e0 JL |
1549 | FALSE, /* pc_relative */ |
1550 | 0, /* bitpos */ | |
86c95733 | 1551 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 AM |
1552 | ppc_elf_unhandled_reloc, /* special_function */ |
1553 | "R_PPC_VLE_SDA21", /* name */ | |
b9c361e0 JL |
1554 | FALSE, /* partial_inplace */ |
1555 | 0, /* src_mask */ | |
1556 | 0xffff, /* dst_mask */ | |
1557 | FALSE), /* pcrel_offset */ | |
1558 | ||
86c95733 | 1559 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
b9c361e0 JL |
1560 | HOWTO (R_PPC_VLE_SDA21_LO, /* type */ |
1561 | 0, /* rightshift */ | |
1562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1563 | 16, /* bitsize */ |
b9c361e0 JL |
1564 | FALSE, /* pc_relative */ |
1565 | 0, /* bitpos */ | |
86c95733 | 1566 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1567 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1568 | "R_PPC_VLE_SDA21_LO", /* name */ |
1569 | FALSE, /* partial_inplace */ | |
1570 | 0, /* src_mask */ | |
86c95733 | 1571 | 0xffff, /* dst_mask */ |
b9c361e0 JL |
1572 | FALSE), /* pcrel_offset */ |
1573 | ||
1574 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
1575 | HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */ | |
1576 | 0, /* rightshift */ | |
1577 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1578 | 16, /* bitsize */ |
b9c361e0 JL |
1579 | FALSE, /* pc_relative */ |
1580 | 0, /* bitpos */ | |
3ce51288 AM |
1581 | complain_overflow_dont, /* complain_on_overflow */ |
1582 | ppc_elf_unhandled_reloc, /* special_function */ | |
1583 | "R_PPC_VLE_SDAREL_LO16A", /* name */ | |
b9c361e0 JL |
1584 | FALSE, /* partial_inplace */ |
1585 | 0, /* src_mask */ | |
08dc996f | 1586 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1587 | FALSE), /* pcrel_offset */ |
1588 | ||
1589 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
b9c361e0 JL |
1590 | HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */ |
1591 | 0, /* rightshift */ | |
1592 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1593 | 16, /* bitsize */ |
b9c361e0 JL |
1594 | FALSE, /* pc_relative */ |
1595 | 0, /* bitpos */ | |
3ce51288 AM |
1596 | complain_overflow_dont, /* complain_on_overflow */ |
1597 | ppc_elf_unhandled_reloc, /* special_function */ | |
1598 | "R_PPC_VLE_SDAREL_LO16D", /* name */ | |
b9c361e0 JL |
1599 | FALSE, /* partial_inplace */ |
1600 | 0, /* src_mask */ | |
5499c7c7 | 1601 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1602 | FALSE), /* pcrel_offset */ |
1603 | ||
1604 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
3ce51288 | 1605 | HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */ |
86c95733 | 1606 | 16, /* rightshift */ |
b9c361e0 | 1607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1608 | 16, /* bitsize */ |
b9c361e0 JL |
1609 | FALSE, /* pc_relative */ |
1610 | 0, /* bitpos */ | |
3ce51288 AM |
1611 | complain_overflow_dont, /* complain_on_overflow */ |
1612 | ppc_elf_unhandled_reloc, /* special_function */ | |
1613 | "R_PPC_VLE_SDAREL_HI16A", /* name */ | |
b9c361e0 JL |
1614 | FALSE, /* partial_inplace */ |
1615 | 0, /* src_mask */ | |
08dc996f | 1616 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1617 | FALSE), /* pcrel_offset */ |
1618 | ||
1619 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
3ce51288 | 1620 | HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */ |
86c95733 | 1621 | 16, /* rightshift */ |
b9c361e0 | 1622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1623 | 16, /* bitsize */ |
b9c361e0 JL |
1624 | FALSE, /* pc_relative */ |
1625 | 0, /* bitpos */ | |
3ce51288 AM |
1626 | complain_overflow_dont, /* complain_on_overflow */ |
1627 | ppc_elf_unhandled_reloc, /* special_function */ | |
1628 | "R_PPC_VLE_SDAREL_HI16D", /* name */ | |
b9c361e0 JL |
1629 | FALSE, /* partial_inplace */ |
1630 | 0, /* src_mask */ | |
5499c7c7 | 1631 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1632 | FALSE), /* pcrel_offset */ |
1633 | ||
1634 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
3ce51288 | 1635 | HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */ |
86c95733 | 1636 | 16, /* rightshift */ |
b9c361e0 | 1637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1638 | 16, /* bitsize */ |
b9c361e0 JL |
1639 | FALSE, /* pc_relative */ |
1640 | 0, /* bitpos */ | |
3ce51288 AM |
1641 | complain_overflow_dont, /* complain_on_overflow */ |
1642 | ppc_elf_unhandled_reloc, /* special_function */ | |
1643 | "R_PPC_VLE_SDAREL_HA16A", /* name */ | |
b9c361e0 JL |
1644 | FALSE, /* partial_inplace */ |
1645 | 0, /* src_mask */ | |
08dc996f | 1646 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1647 | FALSE), /* pcrel_offset */ |
1648 | ||
1649 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
3ce51288 | 1650 | HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */ |
86c95733 | 1651 | 16, /* rightshift */ |
b9c361e0 | 1652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1653 | 16, /* bitsize */ |
b9c361e0 JL |
1654 | FALSE, /* pc_relative */ |
1655 | 0, /* bitpos */ | |
3ce51288 AM |
1656 | complain_overflow_dont, /* complain_on_overflow */ |
1657 | ppc_elf_unhandled_reloc, /* special_function */ | |
1658 | "R_PPC_VLE_SDAREL_HA16D", /* name */ | |
b9c361e0 JL |
1659 | FALSE, /* partial_inplace */ |
1660 | 0, /* src_mask */ | |
5499c7c7 | 1661 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1662 | FALSE), /* pcrel_offset */ |
1663 | ||
83eef883 AFB |
1664 | /* e_li split20 format. */ |
1665 | HOWTO (R_PPC_VLE_ADDR20, /* type */ | |
1666 | 16, /* rightshift */ | |
1667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1668 | 20, /* bitsize */ | |
1669 | FALSE, /* pc_relative */ | |
1670 | 0, /* bitpos */ | |
1671 | complain_overflow_dont, /* complain_on_overflow */ | |
1672 | bfd_elf_generic_reloc, /* special_function */ | |
1673 | "R_PPC_VLE_ADDR20", /* name */ | |
1674 | FALSE, /* partial_inplace */ | |
1675 | 0, /* src_mask */ | |
1676 | 0x1f07ff, /* dst_mask */ | |
1677 | FALSE), /* pcrel_offset */ | |
1678 | ||
e054468f AM |
1679 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1680 | 0, /* rightshift */ | |
1681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1682 | 32, /* bitsize */ | |
1683 | FALSE, /* pc_relative */ | |
1684 | 0, /* bitpos */ | |
86c95733 | 1685 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1686 | ppc_elf_unhandled_reloc, /* special_function */ |
e054468f AM |
1687 | "R_PPC_IRELATIVE", /* name */ |
1688 | FALSE, /* partial_inplace */ | |
1689 | 0, /* src_mask */ | |
1690 | 0xffffffff, /* dst_mask */ | |
1691 | FALSE), /* pcrel_offset */ | |
1692 | ||
d7128ce4 AM |
1693 | /* A 16 bit relative relocation. */ |
1694 | HOWTO (R_PPC_REL16, /* type */ | |
1695 | 0, /* rightshift */ | |
1696 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1697 | 16, /* bitsize */ | |
1698 | TRUE, /* pc_relative */ | |
1699 | 0, /* bitpos */ | |
86c95733 | 1700 | complain_overflow_signed, /* complain_on_overflow */ |
d7128ce4 AM |
1701 | bfd_elf_generic_reloc, /* special_function */ |
1702 | "R_PPC_REL16", /* name */ | |
1703 | FALSE, /* partial_inplace */ | |
1704 | 0, /* src_mask */ | |
1705 | 0xffff, /* dst_mask */ | |
1706 | TRUE), /* pcrel_offset */ | |
1707 | ||
1708 | /* A 16 bit relative relocation without overflow. */ | |
1709 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1710 | 0, /* rightshift */ | |
1711 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1712 | 16, /* bitsize */ | |
1713 | TRUE, /* pc_relative */ | |
1714 | 0, /* bitpos */ | |
1715 | complain_overflow_dont,/* complain_on_overflow */ | |
1716 | bfd_elf_generic_reloc, /* special_function */ | |
1717 | "R_PPC_REL16_LO", /* name */ | |
1718 | FALSE, /* partial_inplace */ | |
1719 | 0, /* src_mask */ | |
1720 | 0xffff, /* dst_mask */ | |
1721 | TRUE), /* pcrel_offset */ | |
1722 | ||
1723 | /* The high order 16 bits of a relative address. */ | |
1724 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1725 | 16, /* rightshift */ | |
1726 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1727 | 16, /* bitsize */ | |
1728 | TRUE, /* pc_relative */ | |
1729 | 0, /* bitpos */ | |
1730 | complain_overflow_dont, /* complain_on_overflow */ | |
1731 | bfd_elf_generic_reloc, /* special_function */ | |
1732 | "R_PPC_REL16_HI", /* name */ | |
1733 | FALSE, /* partial_inplace */ | |
1734 | 0, /* src_mask */ | |
1735 | 0xffff, /* dst_mask */ | |
1736 | TRUE), /* pcrel_offset */ | |
1737 | ||
1738 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1739 | the low 16 bits, treated as a signed number, is negative. */ | |
1740 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1741 | 16, /* rightshift */ | |
1742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1743 | 16, /* bitsize */ | |
1744 | TRUE, /* pc_relative */ | |
1745 | 0, /* bitpos */ | |
1746 | complain_overflow_dont, /* complain_on_overflow */ | |
1747 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1748 | "R_PPC_REL16_HA", /* name */ | |
1749 | FALSE, /* partial_inplace */ | |
1750 | 0, /* src_mask */ | |
1751 | 0xffff, /* dst_mask */ | |
1752 | TRUE), /* pcrel_offset */ | |
1753 | ||
a680de9a PB |
1754 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
1755 | HOWTO (R_PPC_REL16DX_HA, /* type */ | |
1756 | 16, /* rightshift */ | |
1757 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1758 | 16, /* bitsize */ | |
1759 | TRUE, /* pc_relative */ | |
1760 | 0, /* bitpos */ | |
1761 | complain_overflow_signed, /* complain_on_overflow */ | |
1762 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1763 | "R_PPC_REL16DX_HA", /* name */ | |
1764 | FALSE, /* partial_inplace */ | |
1765 | 0, /* src_mask */ | |
1766 | 0x1fffc1, /* dst_mask */ | |
1767 | TRUE), /* pcrel_offset */ | |
1768 | ||
7ba71655 AM |
1769 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
1770 | HOWTO (R_PPC_16DX_HA, /* type */ | |
1771 | 16, /* rightshift */ | |
1772 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1773 | 16, /* bitsize */ | |
1774 | FALSE, /* pc_relative */ | |
1775 | 0, /* bitpos */ | |
1776 | complain_overflow_signed, /* complain_on_overflow */ | |
1777 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1778 | "R_PPC_16DX_HA", /* name */ | |
1779 | FALSE, /* partial_inplace */ | |
1780 | 0, /* src_mask */ | |
1781 | 0x1fffc1, /* dst_mask */ | |
1782 | FALSE), /* pcrel_offset */ | |
1783 | ||
25dbc73a AM |
1784 | /* GNU extension to record C++ vtable hierarchy. */ |
1785 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1786 | 0, /* rightshift */ | |
1787 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1788 | 0, /* bitsize */ | |
1789 | FALSE, /* pc_relative */ | |
1790 | 0, /* bitpos */ | |
1791 | complain_overflow_dont, /* complain_on_overflow */ | |
1792 | NULL, /* special_function */ | |
1793 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1794 | FALSE, /* partial_inplace */ | |
1795 | 0, /* src_mask */ | |
1796 | 0, /* dst_mask */ | |
1797 | FALSE), /* pcrel_offset */ | |
1798 | ||
1799 | /* GNU extension to record C++ vtable member usage. */ | |
1800 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1801 | 0, /* rightshift */ | |
1802 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1803 | 0, /* bitsize */ | |
1804 | FALSE, /* pc_relative */ | |
1805 | 0, /* bitpos */ | |
1806 | complain_overflow_dont, /* complain_on_overflow */ | |
1807 | NULL, /* special_function */ | |
1808 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1809 | FALSE, /* partial_inplace */ |
1810 | 0, /* src_mask */ | |
25dbc73a | 1811 | 0, /* dst_mask */ |
7619e7c7 AM |
1812 | FALSE), /* pcrel_offset */ |
1813 | ||
25dbc73a AM |
1814 | /* Phony reloc to handle AIX style TOC entries. */ |
1815 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1816 | 0, /* rightshift */ |
1817 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1818 | 16, /* bitsize */ | |
1819 | FALSE, /* pc_relative */ | |
1820 | 0, /* bitpos */ | |
25dbc73a | 1821 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1822 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a | 1823 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1824 | FALSE, /* partial_inplace */ |
1825 | 0, /* src_mask */ | |
1826 | 0xffff, /* dst_mask */ | |
1827 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1828 | }; |
1829 | \f | |
1830 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1831 | ||
1832 | static void | |
1833 | ppc_elf_howto_init (void) | |
1834 | { | |
1835 | unsigned int i, type; | |
1836 | ||
1837 | for (i = 0; | |
1838 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1839 | i++) | |
1840 | { | |
1841 | type = ppc_elf_howto_raw[i].type; | |
1842 | if (type >= (sizeof (ppc_elf_howto_table) | |
1843 | / sizeof (ppc_elf_howto_table[0]))) | |
1844 | abort (); | |
1845 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1846 | } | |
1847 | } | |
1848 | ||
1849 | static reloc_howto_type * | |
1850 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1851 | bfd_reloc_code_real_type code) | |
1852 | { | |
1853 | enum elf_ppc_reloc_type r; | |
1854 | ||
1855 | /* Initialize howto table if not already done. */ | |
1856 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1857 | ppc_elf_howto_init (); | |
1858 | ||
1859 | switch (code) | |
1860 | { | |
1861 | default: | |
1862 | return NULL; | |
1863 | ||
1864 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1865 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1866 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 1867 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 1868 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 1869 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
1870 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
1871 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1872 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1873 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1874 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1875 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1876 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1877 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1878 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1879 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 1880 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 1881 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 1882 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
1883 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
1884 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1885 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1886 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1887 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1888 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1889 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1890 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1891 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1892 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 1893 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
1894 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
1895 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1896 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1897 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 1898 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 1899 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 1900 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
1901 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
1902 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1903 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1904 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 1905 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
1906 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
1907 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1908 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1909 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 1910 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 1911 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 1912 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 1913 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
1914 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
1915 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1916 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1917 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 1918 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 1919 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 1920 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
1921 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
1922 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1923 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1924 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1925 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1926 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1927 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1928 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1929 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1930 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1931 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1932 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1933 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1934 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1935 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1936 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1937 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1938 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1939 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1940 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1941 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1942 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1943 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1944 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1945 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1946 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1947 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1948 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1949 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1950 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1951 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1952 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1953 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1954 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1955 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1956 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
1957 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
1958 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
1959 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
1960 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
1961 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
1962 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
1963 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
1964 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
1965 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
1966 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
1967 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
1968 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
1969 | r = R_PPC_VLE_SDAREL_LO16A; | |
1970 | break; | |
1971 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
1972 | r = R_PPC_VLE_SDAREL_LO16D; | |
1973 | break; | |
1974 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
1975 | r = R_PPC_VLE_SDAREL_HI16A; | |
1976 | break; | |
1977 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
1978 | r = R_PPC_VLE_SDAREL_HI16D; | |
1979 | break; | |
1980 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
1981 | r = R_PPC_VLE_SDAREL_HA16A; | |
1982 | break; | |
1983 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
1984 | r = R_PPC_VLE_SDAREL_HA16D; | |
1985 | break; | |
d7128ce4 AM |
1986 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1987 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1988 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1989 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
7ba71655 | 1990 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break; |
a680de9a | 1991 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
1992 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1993 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1994 | } | |
1995 | ||
1996 | return ppc_elf_howto_table[r]; | |
1997 | }; | |
1998 | ||
157090f7 AM |
1999 | static reloc_howto_type * |
2000 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2001 | const char *r_name) | |
2002 | { | |
2003 | unsigned int i; | |
2004 | ||
2005 | for (i = 0; | |
2006 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
2007 | i++) | |
2008 | if (ppc_elf_howto_raw[i].name != NULL | |
2009 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
2010 | return &ppc_elf_howto_raw[i]; | |
2011 | ||
2012 | return NULL; | |
2013 | } | |
2014 | ||
25dbc73a AM |
2015 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2016 | ||
2017 | static void | |
4aef7643 | 2018 | ppc_elf_info_to_howto (bfd *abfd, |
25dbc73a AM |
2019 | arelent *cache_ptr, |
2020 | Elf_Internal_Rela *dst) | |
2021 | { | |
cd21f5da NC |
2022 | unsigned int r_type; |
2023 | ||
25dbc73a AM |
2024 | /* Initialize howto table if not already done. */ |
2025 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2026 | ppc_elf_howto_init (); | |
2027 | ||
cd21f5da NC |
2028 | r_type = ELF32_R_TYPE (dst->r_info); |
2029 | if (r_type >= R_PPC_max) | |
2030 | { | |
695344c0 | 2031 | /* xgettext:c-format */ |
871b3ab2 | 2032 | _bfd_error_handler (_("%pB: unrecognised PPC reloc number: %d"), |
4eca0228 | 2033 | abfd, r_type); |
cd21f5da NC |
2034 | bfd_set_error (bfd_error_bad_value); |
2035 | r_type = R_PPC_NONE; | |
2036 | } | |
2037 | cache_ptr->howto = ppc_elf_howto_table[r_type]; | |
375de94a AM |
2038 | |
2039 | /* Just because the above assert didn't trigger doesn't mean that | |
2040 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
2041 | if (!cache_ptr->howto) | |
2042 | { | |
695344c0 | 2043 | /* xgettext:c-format */ |
871b3ab2 | 2044 | _bfd_error_handler (_("%pB: invalid relocation type %d"), |
4eca0228 | 2045 | abfd, r_type); |
375de94a AM |
2046 | bfd_set_error (bfd_error_bad_value); |
2047 | ||
2048 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
2049 | } | |
25dbc73a AM |
2050 | } |
2051 | ||
d7128ce4 | 2052 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
2053 | |
2054 | static bfd_reloc_status_type | |
4aef7643 | 2055 | ppc_elf_addr16_ha_reloc (bfd *abfd, |
25dbc73a AM |
2056 | arelent *reloc_entry, |
2057 | asymbol *symbol, | |
4aef7643 | 2058 | void *data, |
25dbc73a AM |
2059 | asection *input_section, |
2060 | bfd *output_bfd, | |
2061 | char **error_message ATTRIBUTE_UNUSED) | |
2062 | { | |
a680de9a PB |
2063 | enum elf_ppc_reloc_type r_type; |
2064 | long insn; | |
2065 | bfd_size_type octets; | |
2066 | bfd_vma value; | |
25dbc73a AM |
2067 | |
2068 | if (output_bfd != NULL) | |
2069 | { | |
2070 | reloc_entry->address += input_section->output_offset; | |
2071 | return bfd_reloc_ok; | |
2072 | } | |
2073 | ||
a680de9a PB |
2074 | reloc_entry->addend += 0x8000; |
2075 | r_type = reloc_entry->howto->type; | |
2076 | if (r_type != R_PPC_REL16DX_HA) | |
2077 | return bfd_reloc_continue; | |
2078 | ||
2079 | value = 0; | |
2080 | if (!bfd_is_com_section (symbol->section)) | |
2081 | value = symbol->value; | |
2082 | value += (reloc_entry->addend | |
2083 | + symbol->section->output_offset | |
2084 | + symbol->section->output_section->vma); | |
2085 | value -= (reloc_entry->address | |
2086 | + input_section->output_offset | |
2087 | + input_section->output_section->vma); | |
2088 | value >>= 16; | |
2089 | ||
2090 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2091 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2092 | insn &= ~0x1fffc1; | |
2093 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2094 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2095 | return bfd_reloc_ok; | |
25dbc73a AM |
2096 | } |
2097 | ||
2098 | static bfd_reloc_status_type | |
2099 | ppc_elf_unhandled_reloc (bfd *abfd, | |
2100 | arelent *reloc_entry, | |
2101 | asymbol *symbol, | |
2102 | void *data, | |
2103 | asection *input_section, | |
2104 | bfd *output_bfd, | |
2105 | char **error_message) | |
2106 | { | |
2107 | /* If this is a relocatable link (output_bfd test tells us), just | |
2108 | call the generic function. Any adjustment will be done at final | |
2109 | link time. */ | |
2110 | if (output_bfd != NULL) | |
2111 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2112 | input_section, output_bfd, error_message); | |
2113 | ||
2114 | if (error_message != NULL) | |
2115 | { | |
2116 | static char buf[60]; | |
2117 | sprintf (buf, _("generic linker can't handle %s"), | |
2118 | reloc_entry->howto->name); | |
2119 | *error_message = buf; | |
2120 | } | |
2121 | return bfd_reloc_dangerous; | |
2122 | } | |
2123 | \f | |
2124 | /* Sections created by the linker. */ | |
2125 | ||
2126 | typedef struct elf_linker_section | |
2127 | { | |
c9a2f333 | 2128 | /* Pointer to the bfd section. */ |
25dbc73a | 2129 | asection *section; |
c9a2f333 AM |
2130 | /* Section name. */ |
2131 | const char *name; | |
2132 | /* Associated bss section name. */ | |
2133 | const char *bss_name; | |
2134 | /* Associated symbol name. */ | |
2135 | const char *sym_name; | |
046183de AM |
2136 | /* Associated symbol. */ |
2137 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
2138 | } elf_linker_section_t; |
2139 | ||
2140 | /* Linked list of allocated pointer entries. This hangs off of the | |
2141 | symbol lists, and provides allows us to return different pointers, | |
2142 | based on different addend's. */ | |
2143 | ||
2144 | typedef struct elf_linker_section_pointers | |
2145 | { | |
2146 | /* next allocated pointer for this symbol */ | |
2147 | struct elf_linker_section_pointers *next; | |
2148 | /* offset of pointer from beginning of section */ | |
2149 | bfd_vma offset; | |
2150 | /* addend used */ | |
2151 | bfd_vma addend; | |
2152 | /* which linker section this is */ | |
2153 | elf_linker_section_t *lsect; | |
25dbc73a AM |
2154 | } elf_linker_section_pointers_t; |
2155 | ||
2156 | struct ppc_elf_obj_tdata | |
2157 | { | |
2158 | struct elf_obj_tdata elf; | |
2159 | ||
2160 | /* A mapping from local symbols to offsets into the various linker | |
2161 | sections added. This is index by the symbol index. */ | |
2162 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
2163 | |
2164 | /* Flags used to auto-detect plt type. */ | |
2165 | unsigned int makes_plt_call : 1; | |
2166 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
2167 | }; |
2168 | ||
2169 | #define ppc_elf_tdata(bfd) \ | |
2170 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 2171 | |
25dbc73a AM |
2172 | #define elf_local_ptr_offsets(bfd) \ |
2173 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 2174 | |
0c8d6e5c AM |
2175 | #define is_ppc_elf(bfd) \ |
2176 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2177 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 2178 | |
25dbc73a | 2179 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 2180 | |
25dbc73a AM |
2181 | static bfd_boolean |
2182 | ppc_elf_mkobject (bfd *abfd) | |
2183 | { | |
0ffa91dd | 2184 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 2185 | PPC32_ELF_DATA); |
25dbc73a | 2186 | } |
7619e7c7 | 2187 | |
14b57c7c AM |
2188 | /* When defaulting arch/mach, decode apuinfo to find a better match. */ |
2189 | ||
2190 | bfd_boolean | |
2191 | _bfd_elf_ppc_set_arch (bfd *abfd) | |
2192 | { | |
2193 | unsigned long mach = 0; | |
2194 | asection *s; | |
2195 | unsigned char *contents; | |
2196 | ||
2197 | if (abfd->arch_info->bits_per_word == 32 | |
2198 | && bfd_big_endian (abfd)) | |
2199 | { | |
2200 | ||
2201 | for (s = abfd->sections; s != NULL; s = s->next) | |
2202 | if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0) | |
2203 | break; | |
2204 | if (s != NULL) | |
2205 | mach = bfd_mach_ppc_vle; | |
2206 | } | |
2207 | ||
2208 | if (mach == 0) | |
2209 | { | |
2210 | s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2211 | if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents)) | |
2212 | { | |
2213 | unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4); | |
2214 | unsigned int i; | |
2215 | ||
2216 | for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4) | |
2217 | { | |
2218 | unsigned int val = bfd_get_32 (abfd, contents + i); | |
2219 | switch (val >> 16) | |
2220 | { | |
2221 | case PPC_APUINFO_PMR: | |
2222 | case PPC_APUINFO_RFMCI: | |
2223 | if (mach == 0) | |
2224 | mach = bfd_mach_ppc_titan; | |
2225 | break; | |
2226 | ||
2227 | case PPC_APUINFO_ISEL: | |
2228 | case PPC_APUINFO_CACHELCK: | |
2229 | if (mach == bfd_mach_ppc_titan) | |
2230 | mach = bfd_mach_ppc_e500mc; | |
2231 | break; | |
2232 | ||
2233 | case PPC_APUINFO_SPE: | |
2234 | case PPC_APUINFO_EFS: | |
2235 | case PPC_APUINFO_BRLOCK: | |
2236 | if (mach != bfd_mach_ppc_vle) | |
2237 | mach = bfd_mach_ppc_e500; | |
8941017b | 2238 | break; |
14b57c7c AM |
2239 | |
2240 | case PPC_APUINFO_VLE: | |
2241 | mach = bfd_mach_ppc_vle; | |
2242 | break; | |
2243 | ||
2244 | default: | |
2245 | mach = -1ul; | |
2246 | } | |
2247 | } | |
2248 | free (contents); | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | if (mach != 0 && mach != -1ul) | |
2253 | { | |
2254 | const bfd_arch_info_type *arch; | |
2255 | ||
2256 | for (arch = abfd->arch_info->next; arch; arch = arch->next) | |
2257 | if (arch->mach == mach) | |
2258 | { | |
2259 | abfd->arch_info = arch; | |
2260 | break; | |
2261 | } | |
2262 | } | |
2263 | return TRUE; | |
2264 | } | |
2265 | ||
25dbc73a | 2266 | /* Fix bad default arch selected for a 32 bit input bfd when the |
14b57c7c | 2267 | default is 64 bit. Also select arch based on apuinfo. */ |
7619e7c7 | 2268 | |
25dbc73a AM |
2269 | static bfd_boolean |
2270 | ppc_elf_object_p (bfd *abfd) | |
2271 | { | |
14b57c7c AM |
2272 | if (!abfd->arch_info->the_default) |
2273 | return TRUE; | |
2274 | ||
2275 | if (abfd->arch_info->bits_per_word == 64) | |
25dbc73a AM |
2276 | { |
2277 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 2278 | |
25dbc73a AM |
2279 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
2280 | { | |
2281 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2282 | abfd->arch_info = abfd->arch_info->next; | |
2283 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2284 | } | |
2285 | } | |
14b57c7c | 2286 | return _bfd_elf_ppc_set_arch (abfd); |
25dbc73a | 2287 | } |
7619e7c7 | 2288 | |
25dbc73a | 2289 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 2290 | |
25dbc73a AM |
2291 | static bfd_boolean |
2292 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
2293 | { | |
2294 | BFD_ASSERT (!elf_flags_init (abfd) | |
2295 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 2296 | |
25dbc73a AM |
2297 | elf_elfheader (abfd)->e_flags = flags; |
2298 | elf_flags_init (abfd) = TRUE; | |
2299 | return TRUE; | |
2300 | } | |
2301 | ||
25dbc73a | 2302 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 2303 | |
b34976b6 | 2304 | static bfd_boolean |
25dbc73a | 2305 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 2306 | { |
25dbc73a AM |
2307 | int offset; |
2308 | unsigned int size; | |
252b5132 | 2309 | |
25dbc73a AM |
2310 | switch (note->descsz) |
2311 | { | |
2312 | default: | |
2313 | return FALSE; | |
252b5132 | 2314 | |
25dbc73a AM |
2315 | case 268: /* Linux/PPC. */ |
2316 | /* pr_cursig */ | |
228e534f | 2317 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 2318 | |
25dbc73a | 2319 | /* pr_pid */ |
228e534f | 2320 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 2321 | |
25dbc73a AM |
2322 | /* pr_reg */ |
2323 | offset = 72; | |
2324 | size = 192; | |
deaaf2f3 | 2325 | |
25dbc73a AM |
2326 | break; |
2327 | } | |
deaaf2f3 | 2328 | |
25dbc73a AM |
2329 | /* Make a ".reg/999" section. */ |
2330 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2331 | size, note->descpos + offset); | |
2332 | } | |
252b5132 | 2333 | |
25dbc73a AM |
2334 | static bfd_boolean |
2335 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2336 | { | |
2337 | switch (note->descsz) | |
deaaf2f3 | 2338 | { |
25dbc73a AM |
2339 | default: |
2340 | return FALSE; | |
deaaf2f3 | 2341 | |
25dbc73a | 2342 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 2343 | elf_tdata (abfd)->core->pid |
bc989cdc | 2344 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 2345 | elf_tdata (abfd)->core->program |
25dbc73a | 2346 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 2347 | elf_tdata (abfd)->core->command |
25dbc73a AM |
2348 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
2349 | } | |
9abc968f | 2350 | |
25dbc73a AM |
2351 | /* Note that for some reason, a spurious space is tacked |
2352 | onto the end of the args in some (at least one anyway) | |
2353 | implementations, so strip it off if it exists. */ | |
70bccea4 | 2354 | |
25dbc73a | 2355 | { |
228e534f | 2356 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 2357 | int n = strlen (command); |
70bccea4 | 2358 | |
25dbc73a AM |
2359 | if (0 < n && command[n - 1] == ' ') |
2360 | command[n - 1] = '\0'; | |
2361 | } | |
deaaf2f3 | 2362 | |
25dbc73a AM |
2363 | return TRUE; |
2364 | } | |
deaaf2f3 | 2365 | |
183e98be AM |
2366 | static char * |
2367 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
2368 | { | |
2369 | switch (note_type) | |
2370 | { | |
2371 | default: | |
2372 | return NULL; | |
2373 | ||
2374 | case NT_PRPSINFO: | |
2375 | { | |
2376 | char data[128]; | |
2377 | va_list ap; | |
2378 | ||
2379 | va_start (ap, note_type); | |
75cd47ed | 2380 | memset (data, 0, sizeof (data)); |
183e98be AM |
2381 | strncpy (data + 32, va_arg (ap, const char *), 16); |
2382 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
2383 | va_end (ap); | |
2384 | return elfcore_write_note (abfd, buf, bufsiz, | |
2385 | "CORE", note_type, data, sizeof (data)); | |
2386 | } | |
2387 | ||
2388 | case NT_PRSTATUS: | |
2389 | { | |
2390 | char data[268]; | |
2391 | va_list ap; | |
2392 | long pid; | |
2393 | int cursig; | |
2394 | const void *greg; | |
2395 | ||
2396 | va_start (ap, note_type); | |
2397 | memset (data, 0, 72); | |
2398 | pid = va_arg (ap, long); | |
2399 | bfd_put_32 (abfd, pid, data + 24); | |
2400 | cursig = va_arg (ap, int); | |
2401 | bfd_put_16 (abfd, cursig, data + 12); | |
2402 | greg = va_arg (ap, const void *); | |
2403 | memcpy (data + 72, greg, 192); | |
2404 | memset (data + 264, 0, 4); | |
2405 | va_end (ap); | |
2406 | return elfcore_write_note (abfd, buf, bufsiz, | |
2407 | "CORE", note_type, data, sizeof (data)); | |
2408 | } | |
2409 | } | |
2410 | } | |
2411 | ||
b9c361e0 | 2412 | static flagword |
68ffbac6 | 2413 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
2414 | { |
2415 | ||
2416 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
2417 | return SHF_PPC_VLE; | |
2418 | ||
2419 | return 0; | |
2420 | } | |
2421 | ||
25dbc73a AM |
2422 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2423 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 2424 | |
25dbc73a AM |
2425 | static bfd_vma |
2426 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
2427 | const asection *plt ATTRIBUTE_UNUSED, | |
2428 | const arelent *rel) | |
2429 | { | |
2430 | return rel->address; | |
2431 | } | |
deaaf2f3 | 2432 | |
25dbc73a | 2433 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
2434 | is called when bfd_section_from_shdr finds a section with an unknown |
2435 | type. */ | |
deaaf2f3 | 2436 | |
25dbc73a | 2437 | static bfd_boolean |
6dc132d9 L |
2438 | ppc_elf_section_from_shdr (bfd *abfd, |
2439 | Elf_Internal_Shdr *hdr, | |
2440 | const char *name, | |
2441 | int shindex) | |
25dbc73a AM |
2442 | { |
2443 | asection *newsect; | |
2444 | flagword flags; | |
d1c6de6f | 2445 | |
6dc132d9 | 2446 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 2447 | return FALSE; |
deaaf2f3 | 2448 | |
25dbc73a AM |
2449 | newsect = hdr->bfd_section; |
2450 | flags = bfd_get_section_flags (abfd, newsect); | |
2451 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2452 | flags |= SEC_EXCLUDE; | |
9abc968f | 2453 | |
25dbc73a AM |
2454 | if (hdr->sh_type == SHT_ORDERED) |
2455 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 2456 | |
25dbc73a AM |
2457 | bfd_set_section_flags (abfd, newsect, flags); |
2458 | return TRUE; | |
2459 | } | |
2460 | ||
2461 | /* Set up any other section flags and such that may be necessary. */ | |
2462 | ||
2463 | static bfd_boolean | |
2464 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
2465 | Elf_Internal_Shdr *shdr, | |
2466 | asection *asect) | |
2467 | { | |
25dbc73a AM |
2468 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
2469 | shdr->sh_type = SHT_ORDERED; | |
2470 | ||
2471 | return TRUE; | |
2472 | } | |
2473 | ||
2474 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2475 | need to bump up the number of section headers. */ | |
2476 | ||
2477 | static int | |
a6b96beb AM |
2478 | ppc_elf_additional_program_headers (bfd *abfd, |
2479 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2480 | { |
2481 | asection *s; | |
2482 | int ret = 0; | |
d1c6de6f | 2483 | |
25dbc73a AM |
2484 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2485 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2486 | ++ret; | |
d1c6de6f | 2487 | |
25dbc73a AM |
2488 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2489 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2490 | ++ret; | |
deaaf2f3 | 2491 | |
25dbc73a AM |
2492 | return ret; |
2493 | } | |
deaaf2f3 | 2494 | |
68ffbac6 | 2495 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
2496 | |
2497 | bfd_boolean | |
2498 | ppc_elf_modify_segment_map (bfd *abfd, | |
2499 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2500 | { | |
f7d69005 | 2501 | struct elf_segment_map *m; |
b9c361e0 JL |
2502 | |
2503 | /* At this point in the link, output sections have already been sorted by | |
2504 | LMA and assigned to segments. All that is left to do is to ensure | |
2505 | there is no mixing of VLE & non-VLE sections in a text segment. | |
2506 | If we find that case, we split the segment. | |
2507 | We maintain the original output section order. */ | |
2508 | ||
12bd6957 | 2509 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 | 2510 | { |
f7d69005 AM |
2511 | struct elf_segment_map *n; |
2512 | bfd_size_type amt; | |
2513 | unsigned int j, k; | |
2514 | unsigned int p_flags; | |
2515 | ||
2516 | if (m->p_type != PT_LOAD || m->count == 0) | |
b9c361e0 JL |
2517 | continue; |
2518 | ||
f7d69005 | 2519 | for (p_flags = PF_R, j = 0; j != m->count; ++j) |
b9c361e0 | 2520 | { |
f7d69005 AM |
2521 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2522 | p_flags |= PF_W; | |
2523 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2524 | { | |
2525 | p_flags |= PF_X; | |
2526 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2527 | p_flags |= PF_PPC_VLE; | |
2528 | break; | |
2529 | } | |
2530 | } | |
2531 | if (j != m->count) | |
2532 | while (++j != m->count) | |
2533 | { | |
2534 | unsigned int p_flags1 = PF_R; | |
94caa966 | 2535 | |
f7d69005 AM |
2536 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2537 | p_flags1 |= PF_W; | |
2538 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2539 | { | |
2540 | p_flags1 |= PF_X; | |
2541 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2542 | p_flags1 |= PF_PPC_VLE; | |
2543 | if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0) | |
2544 | break; | |
2545 | } | |
2546 | p_flags |= p_flags1; | |
2547 | } | |
2548 | /* If we're splitting a segment which originally contained rw | |
2549 | sections then those sections might now only be in one of the | |
2550 | two parts. So always set p_flags if splitting, even if we | |
2551 | are being called for objcopy with p_flags_valid set. */ | |
2552 | if (j != m->count || !m->p_flags_valid) | |
2553 | { | |
2554 | m->p_flags_valid = 1; | |
2555 | m->p_flags = p_flags; | |
2556 | } | |
2557 | if (j == m->count) | |
b9c361e0 JL |
2558 | continue; |
2559 | ||
f7d69005 | 2560 | /* Sections 0..j-1 stay in this (current) segment, |
b9c361e0 JL |
2561 | the remainder are put in a new segment. |
2562 | The scan resumes with the new segment. */ | |
2563 | ||
b9c361e0 JL |
2564 | amt = sizeof (struct elf_segment_map); |
2565 | amt += (m->count - j - 1) * sizeof (asection *); | |
2566 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
2567 | if (n == NULL) | |
954b63d4 | 2568 | return FALSE; |
b9c361e0 JL |
2569 | |
2570 | n->p_type = PT_LOAD; | |
b9c361e0 JL |
2571 | n->count = m->count - j; |
2572 | for (k = 0; k < n->count; ++k) | |
f7d69005 AM |
2573 | n->sections[k] = m->sections[j + k]; |
2574 | m->count = j; | |
2575 | m->p_size_valid = 0; | |
b9c361e0 JL |
2576 | n->next = m->next; |
2577 | m->next = n; | |
b9c361e0 JL |
2578 | } |
2579 | ||
2580 | return TRUE; | |
2581 | } | |
2582 | ||
25dbc73a AM |
2583 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2584 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2585 | that the linker doesn't crater when trying to make more than | |
2586 | 2 sections. */ | |
e656e369 | 2587 | |
b35d266b | 2588 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2589 | { |
14b57c7c AM |
2590 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2591 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2592 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2593 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2594 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2595 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2596 | { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 }, | |
2597 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2598 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2599 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2600 | }; |
2601 | ||
551b43fd AM |
2602 | /* This is what we want for new plt/got. */ |
2603 | static struct bfd_elf_special_section ppc_alt_plt = | |
07d6d2b8 | 2604 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2605 | |
2606 | static const struct bfd_elf_special_section * | |
4aef7643 | 2607 | ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
7f4d3958 | 2608 | { |
b35d266b | 2609 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2610 | |
2611 | /* See if this is one of the special sections. */ | |
2612 | if (sec->name == NULL) | |
2613 | return NULL; | |
2614 | ||
2615 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2616 | sec->use_rela_p); | |
2617 | if (ssect != NULL) | |
2618 | { | |
2619 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2620 | ssect = &ppc_alt_plt; | |
2621 | return ssect; | |
2622 | } | |
2623 | ||
2624 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2625 | } | |
25dbc73a AM |
2626 | \f |
2627 | /* Very simple linked list structure for recording apuinfo values. */ | |
2628 | typedef struct apuinfo_list | |
2629 | { | |
2630 | struct apuinfo_list *next; | |
2631 | unsigned long value; | |
2632 | } | |
2633 | apuinfo_list; | |
e656e369 | 2634 | |
25dbc73a | 2635 | static apuinfo_list *head; |
f2faa800 | 2636 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 2637 | |
25dbc73a AM |
2638 | static void |
2639 | apuinfo_list_init (void) | |
2640 | { | |
2641 | head = NULL; | |
f2faa800 | 2642 | apuinfo_set = FALSE; |
25dbc73a | 2643 | } |
9abc968f | 2644 | |
25dbc73a AM |
2645 | static void |
2646 | apuinfo_list_add (unsigned long value) | |
2647 | { | |
2648 | apuinfo_list *entry = head; | |
deaaf2f3 | 2649 | |
25dbc73a AM |
2650 | while (entry != NULL) |
2651 | { | |
2652 | if (entry->value == value) | |
2653 | return; | |
2654 | entry = entry->next; | |
2655 | } | |
b4a38de6 | 2656 | |
25dbc73a AM |
2657 | entry = bfd_malloc (sizeof (* entry)); |
2658 | if (entry == NULL) | |
2659 | return; | |
e656e369 | 2660 | |
25dbc73a AM |
2661 | entry->value = value; |
2662 | entry->next = head; | |
2663 | head = entry; | |
2664 | } | |
9abc968f | 2665 | |
25dbc73a AM |
2666 | static unsigned |
2667 | apuinfo_list_length (void) | |
2668 | { | |
2669 | apuinfo_list *entry; | |
2670 | unsigned long count; | |
9abc968f | 2671 | |
25dbc73a AM |
2672 | for (entry = head, count = 0; |
2673 | entry; | |
2674 | entry = entry->next) | |
2675 | ++ count; | |
e656e369 | 2676 | |
25dbc73a AM |
2677 | return count; |
2678 | } | |
eea6121a | 2679 | |
25dbc73a AM |
2680 | static inline unsigned long |
2681 | apuinfo_list_element (unsigned long number) | |
2682 | { | |
2683 | apuinfo_list * entry; | |
e656e369 | 2684 | |
25dbc73a AM |
2685 | for (entry = head; |
2686 | entry && number --; | |
2687 | entry = entry->next) | |
2688 | ; | |
252b5132 | 2689 | |
25dbc73a AM |
2690 | return entry ? entry->value : 0; |
2691 | } | |
2692 | ||
2693 | static void | |
2694 | apuinfo_list_finish (void) | |
2695 | { | |
2696 | apuinfo_list *entry; | |
2697 | ||
2698 | for (entry = head; entry;) | |
252b5132 | 2699 | { |
25dbc73a AM |
2700 | apuinfo_list *next = entry->next; |
2701 | free (entry); | |
2702 | entry = next; | |
2703 | } | |
9abc968f | 2704 | |
25dbc73a AM |
2705 | head = NULL; |
2706 | } | |
9abc968f | 2707 | |
25dbc73a AM |
2708 | /* Scan the input BFDs and create a linked list of |
2709 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2710 | |
25dbc73a AM |
2711 | static void |
2712 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2713 | { | |
2714 | bfd *ibfd; | |
2715 | asection *asec; | |
deddc40b NS |
2716 | char *buffer = NULL; |
2717 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 2718 | unsigned i; |
25dbc73a AM |
2719 | unsigned long length; |
2720 | const char *error_message = NULL; | |
9abc968f | 2721 | |
25dbc73a AM |
2722 | if (link_info == NULL) |
2723 | return; | |
9abc968f | 2724 | |
25dbc73a | 2725 | apuinfo_list_init (); |
252b5132 | 2726 | |
25dbc73a | 2727 | /* Read in the input sections contents. */ |
c72f2fb2 | 2728 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 2729 | { |
25dbc73a | 2730 | unsigned long datum; |
252b5132 | 2731 | |
25dbc73a AM |
2732 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2733 | if (asec == NULL) | |
2734 | continue; | |
252b5132 | 2735 | |
695344c0 | 2736 | /* xgettext:c-format */ |
871b3ab2 | 2737 | error_message = _("corrupt %s section in %pB"); |
25dbc73a | 2738 | length = asec->size; |
deddc40b NS |
2739 | if (length < 20) |
2740 | goto fail; | |
2741 | ||
f2faa800 | 2742 | apuinfo_set = TRUE; |
deddc40b | 2743 | if (largest_input_size < asec->size) |
25dbc73a | 2744 | { |
deddc40b NS |
2745 | if (buffer) |
2746 | free (buffer); | |
2747 | largest_input_size = asec->size; | |
2748 | buffer = bfd_malloc (largest_input_size); | |
2749 | if (!buffer) | |
2750 | return; | |
25dbc73a | 2751 | } |
5b914448 | 2752 | |
25dbc73a | 2753 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 2754 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a | 2755 | { |
695344c0 | 2756 | /* xgettext:c-format */ |
871b3ab2 | 2757 | error_message = _("unable to read in %s section from %pB"); |
25dbc73a AM |
2758 | goto fail; |
2759 | } | |
252b5132 | 2760 | |
25dbc73a AM |
2761 | /* Verify the contents of the header. Note - we have to |
2762 | extract the values this way in order to allow for a | |
2763 | host whose endian-ness is different from the target. */ | |
deddc40b | 2764 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
2765 | if (datum != sizeof APUINFO_LABEL) |
2766 | goto fail; | |
252b5132 | 2767 | |
deddc40b | 2768 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
2769 | if (datum != 0x2) |
2770 | goto fail; | |
252b5132 | 2771 | |
deddc40b | 2772 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 2773 | goto fail; |
252b5132 | 2774 | |
25dbc73a | 2775 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 2776 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
2777 | if (datum + 20 != length) |
2778 | goto fail; | |
2779 | ||
25dbc73a AM |
2780 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
2781 | for (i = 0; i < datum; i += 4) | |
deddc40b | 2782 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
2783 | } |
2784 | ||
25dbc73a | 2785 | error_message = NULL; |
252b5132 | 2786 | |
f2faa800 | 2787 | if (apuinfo_set) |
deddc40b | 2788 | { |
f2faa800 NS |
2789 | /* Compute the size of the output section. */ |
2790 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 2791 | |
deddc40b NS |
2792 | /* Set the output section size, if it exists. */ |
2793 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 2794 | |
deddc40b NS |
2795 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
2796 | { | |
2797 | ibfd = abfd; | |
695344c0 | 2798 | /* xgettext:c-format */ |
871b3ab2 | 2799 | error_message = _("warning: unable to set size of %s section in %pB"); |
deddc40b NS |
2800 | } |
2801 | } | |
25dbc73a AM |
2802 | |
2803 | fail: | |
deddc40b NS |
2804 | if (buffer) |
2805 | free (buffer); | |
25dbc73a AM |
2806 | |
2807 | if (error_message) | |
cd9af601 | 2808 | _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd); |
25dbc73a | 2809 | } |
252b5132 | 2810 | |
25dbc73a AM |
2811 | /* Prevent the output section from accumulating the input sections' |
2812 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2813 | |
25dbc73a AM |
2814 | static bfd_boolean |
2815 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2816 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2817 | asection *asec, |
2818 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2819 | { | |
f2faa800 | 2820 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
2821 | } |
2822 | ||
25dbc73a AM |
2823 | /* Finally we can generate the output section. */ |
2824 | ||
2825 | static void | |
2826 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2827 | { |
25dbc73a AM |
2828 | bfd_byte *buffer; |
2829 | asection *asec; | |
2830 | unsigned i; | |
2831 | unsigned num_entries; | |
2832 | bfd_size_type length; | |
7619e7c7 | 2833 | |
25dbc73a AM |
2834 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2835 | if (asec == NULL) | |
2836 | return; | |
2837 | ||
f2faa800 | 2838 | if (!apuinfo_set) |
25dbc73a AM |
2839 | return; |
2840 | ||
2841 | length = asec->size; | |
2842 | if (length < 20) | |
2843 | return; | |
2844 | ||
2845 | buffer = bfd_malloc (length); | |
2846 | if (buffer == NULL) | |
7619e7c7 | 2847 | { |
4eca0228 | 2848 | _bfd_error_handler |
25dbc73a AM |
2849 | (_("failed to allocate space for new APUinfo section.")); |
2850 | return; | |
7619e7c7 | 2851 | } |
7619e7c7 | 2852 | |
25dbc73a AM |
2853 | /* Create the apuinfo header. */ |
2854 | num_entries = apuinfo_list_length (); | |
2855 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2856 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2857 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2858 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2859 | |
25dbc73a AM |
2860 | length = 20; |
2861 | for (i = 0; i < num_entries; i++) | |
feee612b | 2862 | { |
25dbc73a AM |
2863 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2864 | length += 4; | |
feee612b | 2865 | } |
feee612b | 2866 | |
25dbc73a | 2867 | if (length != asec->size) |
4eca0228 | 2868 | _bfd_error_handler (_("failed to compute new APUinfo section.")); |
252b5132 | 2869 | |
25dbc73a | 2870 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
4eca0228 | 2871 | _bfd_error_handler (_("failed to install new APUinfo section.")); |
252b5132 | 2872 | |
25dbc73a AM |
2873 | free (buffer); |
2874 | ||
2875 | apuinfo_list_finish (); | |
252b5132 | 2876 | } |
25dbc73a | 2877 | \f |
7382d32a | 2878 | static bfd_boolean |
c6dd29ce | 2879 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2880 | { |
407aa07c | 2881 | bfd_byte buf[4 * 4]; |
7382d32a | 2882 | |
9e390558 | 2883 | if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf)) |
7382d32a AM |
2884 | return FALSE; |
2885 | ||
c6dd29ce AM |
2886 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2887 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
407aa07c AM |
2888 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 |
2889 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
2890 | } |
2891 | ||
468392fb AM |
2892 | static bfd_boolean |
2893 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2894 | { | |
2895 | bfd_vma vma = *(bfd_vma *) ptr; | |
2896 | return ((section->flags & SEC_ALLOC) != 0 | |
2897 | && section->vma <= vma | |
2898 | && vma < section->vma + section->size); | |
2899 | } | |
2900 | ||
2901 | static long | |
2902 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2903 | long dynsymcount, asymbol **dynsyms, | |
2904 | asymbol **ret) | |
2905 | { | |
2906 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2907 | asection *plt, *relplt, *dynamic, *glink; | |
2908 | bfd_vma glink_vma = 0; | |
2909 | bfd_vma resolv_vma = 0; | |
9e390558 | 2910 | bfd_vma stub_off; |
468392fb AM |
2911 | asymbol *s; |
2912 | arelent *p; | |
9e390558 | 2913 | long count, i, stub_delta; |
468392fb AM |
2914 | size_t size; |
2915 | char *names; | |
2916 | bfd_byte buf[4]; | |
2917 | ||
2918 | *ret = NULL; | |
2919 | ||
2920 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2921 | return 0; | |
2922 | ||
2923 | if (dynsymcount <= 0) | |
2924 | return 0; | |
2925 | ||
2926 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2927 | if (relplt == NULL) | |
2928 | return 0; | |
2929 | ||
2930 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2931 | if (plt == NULL) | |
2932 | return 0; | |
2933 | ||
2934 | /* Call common code to handle old-style executable PLTs. */ | |
2935 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2936 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2937 | dynsymcount, dynsyms, ret); | |
2938 | ||
2939 | /* If this object was prelinked, the prelinker stored the address | |
2940 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2941 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2942 | if (dynamic != NULL) | |
2943 | { | |
2944 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2945 | size_t extdynsize; | |
2946 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2947 | ||
2948 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2949 | return -1; | |
2950 | ||
2951 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2952 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2953 | ||
2954 | extdyn = dynbuf; | |
2955 | extdynend = extdyn + dynamic->size; | |
2956 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2957 | { | |
2958 | Elf_Internal_Dyn dyn; | |
2959 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2960 | ||
2961 | if (dyn.d_tag == DT_NULL) | |
2962 | break; | |
2963 | ||
2964 | if (dyn.d_tag == DT_PPC_GOT) | |
2965 | { | |
2966 | unsigned int g_o_t = dyn.d_un.d_val; | |
2967 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
2968 | if (got != NULL | |
2969 | && bfd_get_section_contents (abfd, got, buf, | |
2970 | g_o_t - got->vma + 4, 4)) | |
2971 | glink_vma = bfd_get_32 (abfd, buf); | |
2972 | break; | |
2973 | } | |
2974 | } | |
2975 | free (dynbuf); | |
2976 | } | |
2977 | ||
2978 | /* Otherwise we read the first plt entry. */ | |
2979 | if (glink_vma == 0) | |
2980 | { | |
2981 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
2982 | glink_vma = bfd_get_32 (abfd, buf); | |
2983 | } | |
2984 | ||
2985 | if (glink_vma == 0) | |
2986 | return 0; | |
2987 | ||
2988 | /* The .glink section usually does not survive the final | |
2989 | link; search for the section (usually .text) where the | |
2990 | glink stubs now reside. */ | |
2991 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
2992 | if (glink == NULL) | |
2993 | return 0; | |
2994 | ||
2995 | /* Determine glink PLT resolver by reading the relative branch | |
2996 | from the first glink stub. */ | |
2997 | if (bfd_get_section_contents (abfd, glink, buf, | |
2998 | glink_vma - glink->vma, 4)) | |
2999 | { | |
3000 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3001 | ||
3002 | /* The first glink stub may either branch to the resolver ... */ | |
3003 | insn ^= B; | |
3004 | if ((insn & ~0x3fffffc) == 0) | |
3005 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
3006 | ||
3007 | /* ... or fall through a bunch of NOPs. */ | |
3008 | else if ((insn ^ B ^ NOP) == 0) | |
3009 | for (i = 4; | |
3010 | bfd_get_section_contents (abfd, glink, buf, | |
3011 | glink_vma - glink->vma + i, 4); | |
3012 | i += 4) | |
3013 | if (bfd_get_32 (abfd, buf) != NOP) | |
3014 | { | |
3015 | resolv_vma = glink_vma + i; | |
3016 | break; | |
3017 | } | |
3018 | } | |
3019 | ||
7382d32a | 3020 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
3021 | /* If the stubs are those for -shared/-pie then we might have |
3022 | multiple stubs for each plt entry. If that is the case then | |
3023 | there is no way to associate stubs with their plt entries short | |
9e390558 AM |
3024 | of figuring out the GOT pointer value used in the stub. |
3025 | The offsets tested here need to cover all possible values of | |
3026 | GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */ | |
3027 | stub_off = glink_vma - glink->vma; | |
3028 | for (stub_delta = 16; stub_delta <= 32; stub_delta += 8) | |
3029 | if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta)) | |
3030 | break; | |
3031 | if (stub_delta > 32) | |
7382d32a AM |
3032 | return 0; |
3033 | ||
468392fb AM |
3034 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
3035 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
3036 | return -1; | |
3037 | ||
468392fb AM |
3038 | size = count * sizeof (asymbol); |
3039 | p = relplt->relocation; | |
3040 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
3041 | { |
3042 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3043 | if (p->addend != 0) | |
3044 | size += sizeof ("+0x") - 1 + 8; | |
3045 | } | |
468392fb AM |
3046 | |
3047 | size += sizeof (asymbol) + sizeof ("__glink"); | |
3048 | ||
3049 | if (resolv_vma) | |
3050 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
3051 | ||
3052 | s = *ret = bfd_malloc (size); | |
3053 | if (s == NULL) | |
3054 | return -1; | |
3055 | ||
9e390558 | 3056 | stub_off = glink_vma - glink->vma; |
468392fb | 3057 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
3058 | p = relplt->relocation + count - 1; |
3059 | for (i = 0; i < count; i++) | |
468392fb AM |
3060 | { |
3061 | size_t len; | |
3062 | ||
9e390558 AM |
3063 | stub_off -= stub_delta; |
3064 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
3065 | stub_off -= 32; | |
468392fb AM |
3066 | *s = **p->sym_ptr_ptr; |
3067 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3068 | we are defining a symbol, ensure one of them is set. */ | |
3069 | if ((s->flags & BSF_LOCAL) == 0) | |
3070 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3071 | s->flags |= BSF_SYNTHETIC; |
468392fb | 3072 | s->section = glink; |
9e390558 | 3073 | s->value = stub_off; |
468392fb AM |
3074 | s->name = names; |
3075 | s->udata.p = NULL; | |
3076 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3077 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3078 | names += len; | |
e054468f AM |
3079 | if (p->addend != 0) |
3080 | { | |
3081 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3082 | names += sizeof ("+0x") - 1; | |
3083 | bfd_sprintf_vma (abfd, names, p->addend); | |
3084 | names += strlen (names); | |
3085 | } | |
468392fb AM |
3086 | memcpy (names, "@plt", sizeof ("@plt")); |
3087 | names += sizeof ("@plt"); | |
3088 | ++s; | |
1079403c | 3089 | --p; |
468392fb AM |
3090 | } |
3091 | ||
3092 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 3093 | memset (s, 0, sizeof *s); |
468392fb | 3094 | s->the_bfd = abfd; |
6ba2a415 | 3095 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3096 | s->section = glink; |
3097 | s->value = glink_vma - glink->vma; | |
3098 | s->name = names; | |
3099 | memcpy (names, "__glink", sizeof ("__glink")); | |
3100 | names += sizeof ("__glink"); | |
3101 | s++; | |
3102 | count++; | |
3103 | ||
3104 | if (resolv_vma) | |
3105 | { | |
3106 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 3107 | memset (s, 0, sizeof *s); |
468392fb | 3108 | s->the_bfd = abfd; |
6ba2a415 | 3109 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3110 | s->section = glink; |
3111 | s->value = resolv_vma - glink->vma; | |
3112 | s->name = names; | |
3113 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3114 | names += sizeof ("__glink_PLTresolve"); | |
3115 | s++; | |
3116 | count++; | |
3117 | } | |
3118 | ||
3119 | return count; | |
3120 | } | |
3121 | \f | |
25dbc73a AM |
3122 | /* The following functions are specific to the ELF linker, while |
3123 | functions above are used generally. They appear in this file more | |
3124 | or less in the order in which they are called. eg. | |
3125 | ppc_elf_check_relocs is called early in the link process, | |
3126 | ppc_elf_finish_dynamic_sections is one of the last functions | |
3127 | called. */ | |
252b5132 | 3128 | |
a6aa5195 | 3129 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 3130 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
3131 | struct plt_entry |
3132 | { | |
3133 | struct plt_entry *next; | |
3134 | ||
3135 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
3136 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
3137 | GOT pointer reg. It will always be at least 32768. (Current |
3138 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
3139 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
3140 | bfd_vma addend; |
3141 | ||
3142 | /* The .got2 section. */ | |
3143 | asection *sec; | |
3144 | ||
3145 | /* PLT refcount or offset. */ | |
3146 | union | |
3147 | { | |
3148 | bfd_signed_vma refcount; | |
3149 | bfd_vma offset; | |
3150 | } plt; | |
3151 | ||
3152 | /* .glink stub offset. */ | |
3153 | bfd_vma glink_offset; | |
3154 | }; | |
3155 | ||
7c8bbca5 AM |
3156 | /* Of those relocs that might be copied as dynamic relocs, this |
3157 | function selects those that must be copied when linking a shared | |
3158 | library or PIE, even when the symbol is local. */ | |
252b5132 | 3159 | |
1d483afe AM |
3160 | static int |
3161 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3162 | enum elf_ppc_reloc_type r_type) | |
3163 | { | |
3164 | switch (r_type) | |
3165 | { | |
3166 | default: | |
7c8bbca5 AM |
3167 | /* Only relative relocs can be resolved when the object load |
3168 | address isn't fixed. DTPREL32 is excluded because the | |
3169 | dynamic linker needs to differentiate global dynamic from | |
3170 | local dynamic __tls_index pairs when PPC_OPT_TLS is set. */ | |
1d483afe AM |
3171 | return 1; |
3172 | ||
3173 | case R_PPC_REL24: | |
3174 | case R_PPC_REL14: | |
3175 | case R_PPC_REL14_BRTAKEN: | |
3176 | case R_PPC_REL14_BRNTAKEN: | |
3177 | case R_PPC_REL32: | |
3178 | return 0; | |
3179 | ||
3180 | case R_PPC_TPREL32: | |
3181 | case R_PPC_TPREL16: | |
3182 | case R_PPC_TPREL16_LO: | |
3183 | case R_PPC_TPREL16_HI: | |
3184 | case R_PPC_TPREL16_HA: | |
7c8bbca5 AM |
3185 | /* These relocations are relative but in a shared library the |
3186 | linker doesn't know the thread pointer base. */ | |
3187 | return bfd_link_dll (info); | |
1d483afe AM |
3188 | } |
3189 | } | |
252b5132 | 3190 | |
25dbc73a AM |
3191 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3192 | copying dynamic variables from a shared lib into an app's dynbss | |
3193 | section, and instead use a dynamic relocation to point into the | |
3194 | shared lib. */ | |
3195 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 3196 | |
f95f8542 AM |
3197 | /* Used to track dynamic relocations for local symbols. */ |
3198 | struct ppc_dyn_relocs | |
3199 | { | |
3200 | struct ppc_dyn_relocs *next; | |
3201 | ||
3202 | /* The input section of the reloc. */ | |
3203 | asection *sec; | |
3204 | ||
3205 | /* Total number of relocs copied for the input section. */ | |
3206 | unsigned int count : 31; | |
3207 | ||
3208 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3209 | unsigned int ifunc : 1; | |
3210 | }; | |
3211 | ||
25dbc73a | 3212 | /* PPC ELF linker hash entry. */ |
252b5132 | 3213 | |
25dbc73a AM |
3214 | struct ppc_elf_link_hash_entry |
3215 | { | |
3216 | struct elf_link_hash_entry elf; | |
252b5132 | 3217 | |
25dbc73a AM |
3218 | /* If this symbol is used in the linker created sections, the processor |
3219 | specific backend uses this field to map the field into the offset | |
3220 | from the beginning of the section. */ | |
3221 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 3222 | |
25dbc73a | 3223 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3224 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 3225 | |
25dbc73a AM |
3226 | /* Contexts in which symbol is used in the GOT (or TOC). |
3227 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
3228 | corresponding relocs are encountered during check_relocs. | |
3229 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3230 | indicate the corresponding GOT entry type is not needed. */ | |
3231 | #define TLS_GD 1 /* GD reloc. */ | |
3232 | #define TLS_LD 2 /* LD reloc. */ | |
3233 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3234 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3235 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3236 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3237 | #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */ |
25dbc73a | 3238 | char tls_mask; |
4dc4a9a5 DJ |
3239 | |
3240 | /* Nonzero if we have seen a small data relocation referring to this | |
3241 | symbol. */ | |
d3e454b9 AM |
3242 | unsigned char has_sda_refs : 1; |
3243 | ||
3244 | /* Flag use of given relocations. */ | |
3245 | unsigned char has_addr16_ha : 1; | |
3246 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 3247 | }; |
252b5132 | 3248 | |
25dbc73a AM |
3249 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
3250 | ||
3251 | /* PPC ELF linker hash table. */ | |
3252 | ||
3253 | struct ppc_elf_link_hash_table | |
3254 | { | |
3255 | struct elf_link_hash_table elf; | |
3256 | ||
5446cbdf AM |
3257 | /* Various options passed from the linker. */ |
3258 | struct ppc_elf_params *params; | |
3259 | ||
25dbc73a | 3260 | /* Short-cuts to get to dynamic linker sections. */ |
d7128ce4 | 3261 | asection *glink; |
25dbc73a AM |
3262 | asection *dynsbss; |
3263 | asection *relsbss; | |
c9a2f333 | 3264 | elf_linker_section_t sdata[2]; |
25dbc73a | 3265 | asection *sbss; |
6177242a | 3266 | asection *glink_eh_frame; |
25dbc73a | 3267 | |
016687f8 AM |
3268 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
3269 | asection *srelplt2; | |
3270 | ||
1d483afe | 3271 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 3272 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 3273 | |
016687f8 AM |
3274 | /* The bfd that forced an old-style PLT. */ |
3275 | bfd *old_bfd; | |
5b914448 | 3276 | |
25dbc73a AM |
3277 | /* TLS local dynamic got entry handling. */ |
3278 | union { | |
3279 | bfd_signed_vma refcount; | |
3280 | bfd_vma offset; | |
3281 | } tlsld_got; | |
252b5132 | 3282 | |
c6dd29ce | 3283 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
3284 | bfd_vma glink_pltresolve; |
3285 | ||
3b36f7e6 AM |
3286 | /* Size of reserved GOT entries. */ |
3287 | unsigned int got_header_size; | |
3288 | /* Non-zero if allocating the header left a gap. */ | |
3289 | unsigned int got_gap; | |
3290 | ||
4a3dc543 RS |
3291 | /* The type of PLT we have chosen to use. */ |
3292 | enum ppc_elf_plt_type plt_type; | |
3293 | ||
9d8504b1 | 3294 | /* True if the target system is VxWorks. */ |
016687f8 | 3295 | unsigned int is_vxworks:1; |
9d8504b1 | 3296 | |
82e66161 AM |
3297 | /* Whether there exist local gnu indirect function resolvers, |
3298 | referenced by dynamic relocations. */ | |
3299 | unsigned int local_ifunc_resolver:1; | |
3300 | unsigned int maybe_local_ifunc_resolver:1; | |
3301 | ||
9a23f96e AM |
3302 | /* Set if tls optimization is enabled. */ |
3303 | unsigned int do_tls_opt:1; | |
3304 | ||
9d8504b1 PB |
3305 | /* The size of PLT entries. */ |
3306 | int plt_entry_size; | |
3307 | /* The distance between adjacent PLT slots. */ | |
3308 | int plt_slot_size; | |
3309 | /* The size of the first PLT entry. */ | |
3310 | int plt_initial_entry_size; | |
016687f8 | 3311 | |
87d72d41 AM |
3312 | /* Small local sym cache. */ |
3313 | struct sym_cache sym_cache; | |
25dbc73a | 3314 | }; |
252b5132 | 3315 | |
94caa966 AM |
3316 | /* Rename some of the generic section flags to better document how they |
3317 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
3318 | ||
3319 | /* Nonzero if this section has TLS related relocations. */ | |
3320 | #define has_tls_reloc sec_flg0 | |
3321 | ||
3322 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3323 | #define has_tls_get_addr_call sec_flg1 | |
3324 | ||
25dbc73a | 3325 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 3326 | |
25dbc73a | 3327 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
3328 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3329 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 3330 | |
25dbc73a | 3331 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 3332 | |
25dbc73a AM |
3333 | static struct bfd_hash_entry * |
3334 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3335 | struct bfd_hash_table *table, | |
3336 | const char *string) | |
252b5132 | 3337 | { |
25dbc73a AM |
3338 | /* Allocate the structure if it has not already been allocated by a |
3339 | subclass. */ | |
3340 | if (entry == NULL) | |
3341 | { | |
3342 | entry = bfd_hash_allocate (table, | |
3343 | sizeof (struct ppc_elf_link_hash_entry)); | |
3344 | if (entry == NULL) | |
3345 | return entry; | |
3346 | } | |
252b5132 | 3347 | |
25dbc73a AM |
3348 | /* Call the allocation method of the superclass. */ |
3349 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3350 | if (entry != NULL) | |
3351 | { | |
3352 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
3353 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
3354 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 3355 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 3356 | } |
252b5132 | 3357 | |
25dbc73a | 3358 | return entry; |
252b5132 | 3359 | } |
3dab13f6 | 3360 | |
25dbc73a | 3361 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 3362 | |
25dbc73a AM |
3363 | static struct bfd_link_hash_table * |
3364 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 3365 | { |
25dbc73a | 3366 | struct ppc_elf_link_hash_table *ret; |
76e7a751 | 3367 | static struct ppc_elf_params default_params |
407aa07c | 3368 | = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 }; |
3dab13f6 | 3369 | |
25dbc73a AM |
3370 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
3371 | if (ret == NULL) | |
3372 | return NULL; | |
3dab13f6 | 3373 | |
66eb6687 AM |
3374 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
3375 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
3376 | sizeof (struct ppc_elf_link_hash_entry), |
3377 | PPC32_ELF_DATA)) | |
3dab13f6 | 3378 | { |
25dbc73a AM |
3379 | free (ret); |
3380 | return NULL; | |
3381 | } | |
58111eb7 | 3382 | |
a6aa5195 AM |
3383 | ret->elf.init_plt_refcount.refcount = 0; |
3384 | ret->elf.init_plt_refcount.glist = NULL; | |
3385 | ret->elf.init_plt_offset.offset = 0; | |
3386 | ret->elf.init_plt_offset.glist = NULL; | |
3387 | ||
db434ba0 AM |
3388 | ret->params = &default_params; |
3389 | ||
c9a2f333 AM |
3390 | ret->sdata[0].name = ".sdata"; |
3391 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
3392 | ret->sdata[0].bss_name = ".sbss"; | |
3393 | ||
3394 | ret->sdata[1].name = ".sdata2"; | |
3395 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
3396 | ret->sdata[1].bss_name = ".sbss2"; | |
3397 | ||
9d8504b1 PB |
3398 | ret->plt_entry_size = 12; |
3399 | ret->plt_slot_size = 8; | |
3400 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 3401 | |
25dbc73a AM |
3402 | return &ret->elf.root; |
3403 | } | |
3dab13f6 | 3404 | |
5446cbdf AM |
3405 | /* Hook linker params into hash table. */ |
3406 | ||
3407 | void | |
3408 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
3409 | { | |
3410 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3411 | ||
3412 | if (htab) | |
3413 | htab->params = params; | |
76e7a751 | 3414 | params->pagesize_p2 = bfd_log2 (params->pagesize); |
5446cbdf AM |
3415 | } |
3416 | ||
9d8504b1 | 3417 | /* Create .got and the related sections. */ |
3dab13f6 | 3418 | |
25dbc73a AM |
3419 | static bfd_boolean |
3420 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
3421 | { | |
3422 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3423 | |
25dbc73a AM |
3424 | if (!_bfd_elf_create_got_section (abfd, info)) |
3425 | return FALSE; | |
3dab13f6 | 3426 | |
25dbc73a | 3427 | htab = ppc_elf_hash_table (info); |
ce558b89 | 3428 | if (!htab->is_vxworks) |
9d8504b1 PB |
3429 | { |
3430 | /* The powerpc .got has a blrl instruction in it. Mark it | |
3431 | executable. */ | |
ce558b89 AM |
3432 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS |
3433 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3434 | if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags)) | |
9d8504b1 PB |
3435 | return FALSE; |
3436 | } | |
3dab13f6 | 3437 | |
25dbc73a AM |
3438 | return TRUE; |
3439 | } | |
3dab13f6 | 3440 | |
93d1b056 AM |
3441 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
3442 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
3443 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
3444 | ||
3445 | static bfd_boolean | |
3446 | ppc_elf_create_linker_section (bfd *abfd, | |
3447 | struct bfd_link_info *info, | |
3448 | flagword flags, | |
3449 | elf_linker_section_t *lsect) | |
3450 | { | |
3451 | asection *s; | |
3452 | ||
3453 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3454 | | SEC_LINKER_CREATED); | |
3455 | ||
3456 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
3457 | if (s == NULL) | |
3458 | return FALSE; | |
3459 | lsect->section = s; | |
3460 | ||
3461 | /* Define the sym on the first section of this name. */ | |
3462 | s = bfd_get_section_by_name (abfd, lsect->name); | |
3463 | ||
3464 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
3465 | if (lsect->sym == NULL) | |
3466 | return FALSE; | |
3467 | lsect->sym->root.u.def.value = 0x8000; | |
3468 | return TRUE; | |
3469 | } | |
3470 | ||
e054468f AM |
3471 | static bfd_boolean |
3472 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
3473 | { | |
3474 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3475 | asection *s; | |
3476 | flagword flags; | |
691d2e9a | 3477 | int p2align; |
e054468f AM |
3478 | |
3479 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
3480 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3481 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
3482 | htab->glink = s; | |
691d2e9a AM |
3483 | p2align = htab->params->ppc476_workaround ? 6 : 4; |
3484 | if (p2align < htab->params->plt_stub_align) | |
3485 | p2align = htab->params->plt_stub_align; | |
e054468f | 3486 | if (s == NULL |
691d2e9a | 3487 | || !bfd_set_section_alignment (abfd, s, p2align)) |
e054468f AM |
3488 | return FALSE; |
3489 | ||
6177242a AM |
3490 | if (!info->no_ld_generated_unwind_info) |
3491 | { | |
3492 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3493 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3494 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
3495 | htab->glink_eh_frame = s; | |
3496 | if (s == NULL | |
3497 | || !bfd_set_section_alignment (abfd, s, 2)) | |
3498 | return FALSE; | |
3499 | } | |
3500 | ||
e054468f AM |
3501 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
3502 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
ce558b89 | 3503 | htab->elf.iplt = s; |
e054468f AM |
3504 | if (s == NULL |
3505 | || !bfd_set_section_alignment (abfd, s, 4)) | |
3506 | return FALSE; | |
3507 | ||
3508 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3509 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3510 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
ce558b89 | 3511 | htab->elf.irelplt = s; |
e054468f AM |
3512 | if (s == NULL |
3513 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3514 | return FALSE; | |
93d1b056 AM |
3515 | |
3516 | if (!ppc_elf_create_linker_section (abfd, info, 0, | |
3517 | &htab->sdata[0])) | |
3518 | return FALSE; | |
3519 | ||
3520 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3521 | &htab->sdata[1])) | |
3522 | return FALSE; | |
3523 | ||
e054468f AM |
3524 | return TRUE; |
3525 | } | |
3526 | ||
25dbc73a AM |
3527 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
3528 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
3529 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 3530 | |
25dbc73a AM |
3531 | static bfd_boolean |
3532 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3533 | { | |
3534 | struct ppc_elf_link_hash_table *htab; | |
3535 | asection *s; | |
3536 | flagword flags; | |
3dab13f6 | 3537 | |
25dbc73a | 3538 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 3539 | |
ce558b89 | 3540 | if (htab->elf.sgot == NULL |
25dbc73a | 3541 | && !ppc_elf_create_got (abfd, info)) |
3dab13f6 AM |
3542 | return FALSE; |
3543 | ||
25dbc73a AM |
3544 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
3545 | return FALSE; | |
3dab13f6 | 3546 | |
e054468f AM |
3547 | if (htab->glink == NULL |
3548 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 3549 | return FALSE; |
3dab13f6 | 3550 | |
14b2f831 AM |
3551 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
3552 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 3553 | htab->dynsbss = s; |
3496cb2a | 3554 | if (s == NULL) |
25dbc73a | 3555 | return FALSE; |
3dab13f6 | 3556 | |
0e1862bb | 3557 | if (! bfd_link_pic (info)) |
25dbc73a | 3558 | { |
e054468f AM |
3559 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
3560 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3561 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 3562 | htab->relsbss = s; |
25dbc73a | 3563 | if (s == NULL |
25dbc73a AM |
3564 | || ! bfd_set_section_alignment (abfd, s, 2)) |
3565 | return FALSE; | |
3566 | } | |
3dab13f6 | 3567 | |
711de32c RS |
3568 | if (htab->is_vxworks |
3569 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
3570 | return FALSE; | |
9d8504b1 | 3571 | |
ce558b89 | 3572 | s = htab->elf.splt; |
3b36f7e6 | 3573 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
3574 | if (htab->plt_type == PLT_VXWORKS) |
3575 | /* The VxWorks PLT is a loaded section with contents. */ | |
3576 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
3577 | return bfd_set_section_flags (abfd, s, flags); |
3578 | } | |
3dab13f6 | 3579 | |
25dbc73a | 3580 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 3581 | |
25dbc73a | 3582 | static void |
fcfa13d2 | 3583 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
3584 | struct elf_link_hash_entry *dir, |
3585 | struct elf_link_hash_entry *ind) | |
3586 | { | |
3587 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 3588 | |
25dbc73a AM |
3589 | edir = (struct ppc_elf_link_hash_entry *) dir; |
3590 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 3591 | |
c79d6685 AM |
3592 | edir->tls_mask |= eind->tls_mask; |
3593 | edir->has_sda_refs |= eind->has_sda_refs; | |
3594 | ||
e81830c5 AM |
3595 | if (edir->elf.versioned != versioned_hidden) |
3596 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
c79d6685 AM |
3597 | edir->elf.ref_regular |= eind->elf.ref_regular; |
3598 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3599 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
c79d6685 AM |
3600 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3601 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
3602 | ||
287c7eaf AM |
3603 | /* If we were called to copy over info for a weak sym, that's all. */ |
3604 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3605 | return; | |
3606 | ||
25dbc73a AM |
3607 | if (eind->dyn_relocs != NULL) |
3608 | { | |
3609 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3610 | { |
6061a67d AM |
3611 | struct elf_dyn_relocs **pp; |
3612 | struct elf_dyn_relocs *p; | |
3dab13f6 | 3613 | |
fcfa13d2 | 3614 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3615 | list. Merge any entries against the same section. */ |
3616 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3617 | { |
6061a67d | 3618 | struct elf_dyn_relocs *q; |
25dbc73a AM |
3619 | |
3620 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3621 | if (q->sec == p->sec) | |
3622 | { | |
3623 | q->pc_count += p->pc_count; | |
3624 | q->count += p->count; | |
3625 | *pp = p->next; | |
3626 | break; | |
3627 | } | |
3628 | if (q == NULL) | |
3629 | pp = &p->next; | |
3dab13f6 | 3630 | } |
25dbc73a | 3631 | *pp = edir->dyn_relocs; |
3dab13f6 | 3632 | } |
25dbc73a AM |
3633 | |
3634 | edir->dyn_relocs = eind->dyn_relocs; | |
3635 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3636 | } |
3dab13f6 | 3637 | |
a6aa5195 AM |
3638 | /* Copy over the GOT refcount entries that we may have already seen to |
3639 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3640 | edir->elf.got.refcount += eind->elf.got.refcount; |
3641 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3642 | |
3643 | /* And plt entries. */ | |
3644 | if (eind->elf.plt.plist != NULL) | |
3645 | { | |
3646 | if (edir->elf.plt.plist != NULL) | |
3647 | { | |
3648 | struct plt_entry **entp; | |
3649 | struct plt_entry *ent; | |
3650 | ||
3651 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3652 | { | |
3653 | struct plt_entry *dent; | |
3654 | ||
3655 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3656 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3657 | { | |
3658 | dent->plt.refcount += ent->plt.refcount; | |
3659 | *entp = ent->next; | |
3660 | break; | |
3661 | } | |
3662 | if (dent == NULL) | |
3663 | entp = &ent->next; | |
3664 | } | |
3665 | *entp = edir->elf.plt.plist; | |
3666 | } | |
3667 | ||
3668 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3669 | eind->elf.plt.plist = NULL; | |
3670 | } | |
3671 | ||
fcfa13d2 | 3672 | if (eind->elf.dynindx != -1) |
25dbc73a | 3673 | { |
fcfa13d2 AM |
3674 | if (edir->elf.dynindx != -1) |
3675 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3676 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3677 | edir->elf.dynindx = eind->elf.dynindx; |
3678 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3679 | eind->elf.dynindx = -1; | |
3680 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3681 | } |
25dbc73a | 3682 | } |
3dab13f6 | 3683 | |
25dbc73a AM |
3684 | /* Hook called by the linker routine which adds symbols from an object |
3685 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3686 | |
25dbc73a AM |
3687 | static bfd_boolean |
3688 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3689 | struct bfd_link_info *info, | |
3690 | Elf_Internal_Sym *sym, | |
3691 | const char **namep ATTRIBUTE_UNUSED, | |
3692 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3693 | asection **secp, | |
3694 | bfd_vma *valp) | |
3695 | { | |
3696 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 3697 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
3698 | && is_ppc_elf (info->output_bfd) |
3699 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3700 | { |
3701 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3702 | put into .sbss. */ | |
3703 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3704 | |
25dbc73a AM |
3705 | htab = ppc_elf_hash_table (info); |
3706 | if (htab->sbss == NULL) | |
3707 | { | |
644285ef | 3708 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3709 | |
644285ef AM |
3710 | if (!htab->elf.dynobj) |
3711 | htab->elf.dynobj = abfd; | |
3712 | ||
3496cb2a L |
3713 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3714 | ".sbss", | |
3715 | flags); | |
3716 | if (htab->sbss == NULL) | |
25dbc73a | 3717 | return FALSE; |
3dab13f6 | 3718 | } |
3dab13f6 | 3719 | |
25dbc73a AM |
3720 | *secp = htab->sbss; |
3721 | *valp = sym->st_size; | |
3722 | } | |
3dab13f6 | 3723 | |
a43942db | 3724 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
3725 | && (abfd->flags & DYNAMIC) == 0 |
3726 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 3727 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
e054468f | 3728 | |
25dbc73a | 3729 | return TRUE; |
3dab13f6 AM |
3730 | } |
3731 | \f | |
25dbc73a AM |
3732 | /* Find a linker generated pointer with a given addend and type. */ |
3733 | ||
3734 | static elf_linker_section_pointers_t * | |
3735 | elf_find_pointer_linker_section | |
3736 | (elf_linker_section_pointers_t *linker_pointers, | |
3737 | bfd_vma addend, | |
3738 | elf_linker_section_t *lsect) | |
252b5132 | 3739 | { |
25dbc73a AM |
3740 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3741 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3742 | return linker_pointers; | |
252b5132 | 3743 | |
25dbc73a AM |
3744 | return NULL; |
3745 | } | |
3746 | ||
3747 | /* Allocate a pointer to live in a linker created section. */ | |
3748 | ||
3749 | static bfd_boolean | |
93d1b056 AM |
3750 | elf_allocate_pointer_linker_section (bfd *abfd, |
3751 | elf_linker_section_t *lsect, | |
3752 | struct elf_link_hash_entry *h, | |
3753 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
3754 | { |
3755 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3756 | elf_linker_section_pointers_t *linker_section_ptr; | |
3757 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3758 | bfd_size_type amt; | |
3759 | ||
3760 | BFD_ASSERT (lsect != NULL); | |
3761 | ||
3762 | /* Is this a global symbol? */ | |
3763 | if (h != NULL) | |
3764 | { | |
3765 | struct ppc_elf_link_hash_entry *eh; | |
3766 | ||
3767 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3768 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3769 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3770 | rel->r_addend, | |
3771 | lsect)) | |
3772 | return TRUE; | |
3773 | ||
3774 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3775 | } |
3776 | else | |
3777 | { | |
0c8d6e5c | 3778 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3779 | |
25dbc73a AM |
3780 | /* Allocation of a pointer to a local symbol. */ |
3781 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3782 | ||
3783 | /* Allocate a table to hold the local symbols if first time. */ | |
3784 | if (!ptr) | |
3785 | { | |
0ffa91dd | 3786 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3787 | |
3788 | amt = num_symbols; | |
3789 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3790 | ptr = bfd_zalloc (abfd, amt); | |
3791 | ||
3792 | if (!ptr) | |
3793 | return FALSE; | |
3794 | ||
3795 | elf_local_ptr_offsets (abfd) = ptr; | |
3796 | } | |
3797 | ||
3798 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3799 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3800 | rel->r_addend, | |
3801 | lsect)) | |
3802 | return TRUE; | |
252b5132 | 3803 | |
25dbc73a | 3804 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3805 | } |
41fcb14e | 3806 | |
25dbc73a AM |
3807 | /* Allocate space for a pointer in the linker section, and allocate |
3808 | a new pointer record from internal memory. */ | |
3809 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3810 | amt = sizeof (elf_linker_section_pointers_t); | |
3811 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3812 | |
25dbc73a | 3813 | if (!linker_section_ptr) |
7619e7c7 | 3814 | return FALSE; |
41fcb14e | 3815 | |
25dbc73a AM |
3816 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3817 | linker_section_ptr->addend = rel->r_addend; | |
3818 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3819 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3820 | |
93d1b056 AM |
3821 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
3822 | return FALSE; | |
25dbc73a AM |
3823 | linker_section_ptr->offset = lsect->section->size; |
3824 | lsect->section->size += 4; | |
7619e7c7 | 3825 | |
25dbc73a AM |
3826 | #ifdef DEBUG |
3827 | fprintf (stderr, | |
3828 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3829 | lsect->name, (long) linker_section_ptr->offset, | |
3830 | (long) lsect->section->size); | |
3831 | #endif | |
7619e7c7 AM |
3832 | |
3833 | return TRUE; | |
41fcb14e AM |
3834 | } |
3835 | ||
e054468f | 3836 | static struct plt_entry ** |
25dbc73a AM |
3837 | update_local_sym_info (bfd *abfd, |
3838 | Elf_Internal_Shdr *symtab_hdr, | |
3839 | unsigned long r_symndx, | |
3840 | int tls_type) | |
252b5132 | 3841 | { |
25dbc73a | 3842 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3843 | struct plt_entry **local_plt; |
25dbc73a | 3844 | char *local_got_tls_masks; |
252b5132 | 3845 | |
25dbc73a | 3846 | if (local_got_refcounts == NULL) |
252b5132 | 3847 | { |
25dbc73a AM |
3848 | bfd_size_type size = symtab_hdr->sh_info; |
3849 | ||
e054468f AM |
3850 | size *= (sizeof (*local_got_refcounts) |
3851 | + sizeof (*local_plt) | |
3852 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3853 | local_got_refcounts = bfd_zalloc (abfd, size); |
3854 | if (local_got_refcounts == NULL) | |
e054468f | 3855 | return NULL; |
25dbc73a | 3856 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3857 | } |
41fcb14e | 3858 | |
e054468f AM |
3859 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
3860 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
25dbc73a | 3861 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
3862 | if (tls_type != PLT_IFUNC) |
3863 | local_got_refcounts[r_symndx] += 1; | |
3864 | return local_plt + r_symndx; | |
25dbc73a | 3865 | } |
41fcb14e | 3866 | |
a6aa5195 | 3867 | static bfd_boolean |
3ec01793 | 3868 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3869 | asection *sec, bfd_vma addend) |
3870 | { | |
3871 | struct plt_entry *ent; | |
3872 | ||
32af9f6e AM |
3873 | if (addend < 32768) |
3874 | sec = NULL; | |
3ec01793 | 3875 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3876 | if (ent->sec == sec && ent->addend == addend) |
3877 | break; | |
3878 | if (ent == NULL) | |
3879 | { | |
3880 | bfd_size_type amt = sizeof (*ent); | |
3881 | ent = bfd_alloc (abfd, amt); | |
3882 | if (ent == NULL) | |
3883 | return FALSE; | |
3ec01793 | 3884 | ent->next = *plist; |
a6aa5195 AM |
3885 | ent->sec = sec; |
3886 | ent->addend = addend; | |
3887 | ent->plt.refcount = 0; | |
3ec01793 | 3888 | *plist = ent; |
a6aa5195 AM |
3889 | } |
3890 | ent->plt.refcount += 1; | |
3891 | return TRUE; | |
3892 | } | |
3893 | ||
3894 | static struct plt_entry * | |
3ec01793 | 3895 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3896 | { |
3897 | struct plt_entry *ent; | |
3898 | ||
3899 | if (addend < 32768) | |
3900 | sec = NULL; | |
3ec01793 | 3901 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3902 | if (ent->sec == sec && ent->addend == addend) |
3903 | break; | |
3904 | return ent; | |
3905 | } | |
3906 | ||
e054468f AM |
3907 | static bfd_boolean |
3908 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3909 | { | |
3910 | return (r_type == R_PPC_PLTREL24 | |
3911 | || r_type == R_PPC_LOCAL24PC | |
3912 | || r_type == R_PPC_REL24 | |
3913 | || r_type == R_PPC_REL14 | |
3914 | || r_type == R_PPC_REL14_BRTAKEN | |
3915 | || r_type == R_PPC_REL14_BRNTAKEN | |
3916 | || r_type == R_PPC_ADDR24 | |
3917 | || r_type == R_PPC_ADDR14 | |
3918 | || r_type == R_PPC_ADDR14_BRTAKEN | |
dfdaec14 AJ |
3919 | || r_type == R_PPC_ADDR14_BRNTAKEN |
3920 | || r_type == R_PPC_VLE_REL24); | |
e054468f AM |
3921 | } |
3922 | ||
25dbc73a AM |
3923 | static void |
3924 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3925 | { | |
4eca0228 | 3926 | _bfd_error_handler |
695344c0 | 3927 | /* xgettext:c-format */ |
871b3ab2 | 3928 | (_("%pB: relocation %s cannot be used when making a shared object"), |
25dbc73a AM |
3929 | abfd, |
3930 | ppc_elf_howto_table[r_type]->name); | |
3931 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3932 | } |
3933 | ||
25dbc73a AM |
3934 | /* Look through the relocs for a section during the first phase, and |
3935 | allocate space in the global offset table or procedure linkage | |
3936 | table. */ | |
252b5132 | 3937 | |
b34976b6 | 3938 | static bfd_boolean |
25dbc73a AM |
3939 | ppc_elf_check_relocs (bfd *abfd, |
3940 | struct bfd_link_info *info, | |
3941 | asection *sec, | |
3942 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3943 | { |
7619e7c7 | 3944 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3945 | Elf_Internal_Shdr *symtab_hdr; |
3946 | struct elf_link_hash_entry **sym_hashes; | |
3947 | const Elf_Internal_Rela *rel; | |
3948 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3949 | asection *got2, *sreloc; |
727fc41e | 3950 | struct elf_link_hash_entry *tga; |
25dbc73a | 3951 | |
0e1862bb | 3952 | if (bfd_link_relocatable (info)) |
25dbc73a | 3953 | return TRUE; |
252b5132 | 3954 | |
c87b5a93 AM |
3955 | /* Don't do anything special with non-loaded, non-alloced sections. |
3956 | In particular, any relocs in such sections should not affect GOT | |
3957 | and PLT reference counting (ie. we don't allow them to create GOT | |
3958 | or PLT entries), there's no possibility or desire to optimize TLS | |
3959 | relocs, and there's not much point in propagating relocs to shared | |
3960 | libs that the dynamic linker won't relocate. */ | |
3961 | if ((sec->flags & SEC_ALLOC) == 0) | |
3962 | return TRUE; | |
3963 | ||
252b5132 | 3964 | #ifdef DEBUG |
871b3ab2 | 3965 | _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB", |
25dbc73a | 3966 | sec, abfd); |
252b5132 RH |
3967 | #endif |
3968 | ||
0c8d6e5c | 3969 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3970 | |
25dbc73a AM |
3971 | /* Initialize howto table if not already done. */ |
3972 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3973 | ppc_elf_howto_init (); | |
3974 | ||
7619e7c7 | 3975 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
3976 | if (htab->glink == NULL) |
3977 | { | |
3978 | if (htab->elf.dynobj == NULL) | |
3979 | htab->elf.dynobj = abfd; | |
3980 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
3981 | return FALSE; | |
3982 | } | |
727fc41e AM |
3983 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3984 | FALSE, FALSE, TRUE); | |
0ffa91dd | 3985 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 3986 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 3987 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3988 | sreloc = NULL; |
3989 | ||
3990 | rel_end = relocs + sec->reloc_count; | |
3991 | for (rel = relocs; rel < rel_end; rel++) | |
3992 | { | |
3993 | unsigned long r_symndx; | |
3994 | enum elf_ppc_reloc_type r_type; | |
3995 | struct elf_link_hash_entry *h; | |
727fc41e | 3996 | int tls_type; |
cbf95972 | 3997 | struct plt_entry **ifunc; |
25dbc73a AM |
3998 | |
3999 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4000 | if (r_symndx < symtab_hdr->sh_info) | |
4001 | h = NULL; | |
4002 | else | |
973a3492 L |
4003 | { |
4004 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4005 | while (h->root.type == bfd_link_hash_indirect | |
4006 | || h->root.type == bfd_link_hash_warning) | |
4007 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4008 | } | |
25dbc73a AM |
4009 | |
4010 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
4011 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
4012 | startup code. */ | |
3b36f7e6 | 4013 | if (h != NULL |
ce558b89 | 4014 | && htab->elf.sgot == NULL |
3b36f7e6 | 4015 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 | 4016 | { |
3b36f7e6 AM |
4017 | if (htab->elf.dynobj == NULL) |
4018 | htab->elf.dynobj = abfd; | |
4019 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4020 | return FALSE; | |
4021 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 4022 | } |
252b5132 | 4023 | |
727fc41e | 4024 | tls_type = 0; |
de972ffa | 4025 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 4026 | ifunc = NULL; |
06a162cf | 4027 | if (h == NULL && !htab->is_vxworks) |
e054468f | 4028 | { |
06a162cf AM |
4029 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4030 | abfd, r_symndx); | |
4031 | if (isym == NULL) | |
4032 | return FALSE; | |
4033 | ||
0bed072f | 4034 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 4035 | { |
0bed072f | 4036 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf AM |
4037 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
4038 | PLT_IFUNC); | |
4039 | if (ifunc == NULL) | |
e054468f AM |
4040 | return FALSE; |
4041 | ||
06a162cf AM |
4042 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
4043 | In a non-pie executable even when there are | |
4044 | no plt calls. */ | |
0e1862bb | 4045 | if (!bfd_link_pic (info) |
0bed072f | 4046 | || is_branch_reloc (r_type)) |
e054468f | 4047 | { |
0bed072f AM |
4048 | bfd_vma addend = 0; |
4049 | if (r_type == R_PPC_PLTREL24) | |
4050 | { | |
4051 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4052 | if (bfd_link_pic (info)) |
0bed072f AM |
4053 | addend = rel->r_addend; |
4054 | } | |
4055 | if (!update_plt_info (abfd, ifunc, got2, addend)) | |
4056 | return FALSE; | |
e054468f AM |
4057 | } |
4058 | } | |
25f23106 AM |
4059 | } |
4060 | ||
de972ffa AM |
4061 | if (!htab->is_vxworks |
4062 | && is_branch_reloc (r_type) | |
4063 | && h != NULL | |
4064 | && h == tga) | |
25f23106 | 4065 | { |
de972ffa AM |
4066 | if (rel != relocs |
4067 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
4068 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
4069 | /* We have a new-style __tls_get_addr call with a marker | |
4070 | reloc. */ | |
4071 | ; | |
4072 | else | |
4073 | /* Mark this section as having an old-style call. */ | |
4074 | sec->has_tls_get_addr_call = 1; | |
e054468f | 4075 | } |
727fc41e | 4076 | |
25dbc73a AM |
4077 | switch (r_type) |
4078 | { | |
727fc41e AM |
4079 | case R_PPC_TLSGD: |
4080 | case R_PPC_TLSLD: | |
4081 | /* These special tls relocs tie a call to __tls_get_addr with | |
4082 | its parameter symbol. */ | |
4083 | break; | |
4084 | ||
25dbc73a AM |
4085 | case R_PPC_GOT_TLSLD16: |
4086 | case R_PPC_GOT_TLSLD16_LO: | |
4087 | case R_PPC_GOT_TLSLD16_HI: | |
4088 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4089 | tls_type = TLS_TLS | TLS_LD; |
4090 | goto dogottls; | |
252b5132 | 4091 | |
25dbc73a AM |
4092 | case R_PPC_GOT_TLSGD16: |
4093 | case R_PPC_GOT_TLSGD16_LO: | |
4094 | case R_PPC_GOT_TLSGD16_HI: | |
4095 | case R_PPC_GOT_TLSGD16_HA: | |
4096 | tls_type = TLS_TLS | TLS_GD; | |
4097 | goto dogottls; | |
4098 | ||
4099 | case R_PPC_GOT_TPREL16: | |
4100 | case R_PPC_GOT_TPREL16_LO: | |
4101 | case R_PPC_GOT_TPREL16_HI: | |
4102 | case R_PPC_GOT_TPREL16_HA: | |
7c8bbca5 | 4103 | if (bfd_link_dll (info)) |
25dbc73a AM |
4104 | info->flags |= DF_STATIC_TLS; |
4105 | tls_type = TLS_TLS | TLS_TPREL; | |
4106 | goto dogottls; | |
4107 | ||
4108 | case R_PPC_GOT_DTPREL16: | |
4109 | case R_PPC_GOT_DTPREL16_LO: | |
4110 | case R_PPC_GOT_DTPREL16_HI: | |
4111 | case R_PPC_GOT_DTPREL16_HA: | |
4112 | tls_type = TLS_TLS | TLS_DTPREL; | |
4113 | dogottls: | |
4114 | sec->has_tls_reloc = 1; | |
1a0670f3 | 4115 | /* Fall through. */ |
252b5132 | 4116 | |
25dbc73a AM |
4117 | /* GOT16 relocations */ |
4118 | case R_PPC_GOT16: | |
4119 | case R_PPC_GOT16_LO: | |
4120 | case R_PPC_GOT16_HI: | |
4121 | case R_PPC_GOT16_HA: | |
4122 | /* This symbol requires a global offset table entry. */ | |
ce558b89 | 4123 | if (htab->elf.sgot == NULL) |
25dbc73a AM |
4124 | { |
4125 | if (htab->elf.dynobj == NULL) | |
4126 | htab->elf.dynobj = abfd; | |
4127 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4128 | return FALSE; | |
4129 | } | |
4130 | if (h != NULL) | |
4131 | { | |
4132 | h->got.refcount += 1; | |
4133 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
4134 | } | |
4135 | else | |
4136 | /* This is a global offset table entry for a local symbol. */ | |
4137 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
4138 | return FALSE; | |
91e21fb7 AM |
4139 | |
4140 | /* We may also need a plt entry if the symbol turns out to be | |
4141 | an ifunc. */ | |
0e1862bb | 4142 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
4143 | { |
4144 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4145 | return FALSE; | |
4146 | } | |
25dbc73a | 4147 | break; |
252b5132 | 4148 | |
25dbc73a AM |
4149 | /* Indirect .sdata relocation. */ |
4150 | case R_PPC_EMB_SDAI16: | |
0e1862bb | 4151 | if (bfd_link_pic (info)) |
25dbc73a AM |
4152 | { |
4153 | bad_shared_reloc (abfd, r_type); | |
4154 | return FALSE; | |
4155 | } | |
93d1b056 AM |
4156 | htab->sdata[0].sym->ref_regular = 1; |
4157 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
4158 | h, rel)) | |
25dbc73a | 4159 | return FALSE; |
046183de AM |
4160 | if (h != NULL) |
4161 | { | |
4162 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4163 | h->non_got_ref = TRUE; | |
4164 | } | |
25dbc73a | 4165 | break; |
252b5132 | 4166 | |
25dbc73a AM |
4167 | /* Indirect .sdata2 relocation. */ |
4168 | case R_PPC_EMB_SDA2I16: | |
0e1862bb | 4169 | if (bfd_link_pic (info)) |
25dbc73a AM |
4170 | { |
4171 | bad_shared_reloc (abfd, r_type); | |
4172 | return FALSE; | |
4173 | } | |
93d1b056 AM |
4174 | htab->sdata[1].sym->ref_regular = 1; |
4175 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
4176 | h, rel)) | |
25dbc73a | 4177 | return FALSE; |
046183de AM |
4178 | if (h != NULL) |
4179 | { | |
4180 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4181 | h->non_got_ref = TRUE; | |
4182 | } | |
25dbc73a | 4183 | break; |
252b5132 | 4184 | |
93d1b056 AM |
4185 | case R_PPC_SDAREL16: |
4186 | htab->sdata[0].sym->ref_regular = 1; | |
1a0670f3 | 4187 | /* Fall through. */ |
93d1b056 | 4188 | |
b9c361e0 JL |
4189 | case R_PPC_VLE_SDAREL_LO16A: |
4190 | case R_PPC_VLE_SDAREL_LO16D: | |
4191 | case R_PPC_VLE_SDAREL_HI16A: | |
4192 | case R_PPC_VLE_SDAREL_HI16D: | |
4193 | case R_PPC_VLE_SDAREL_HA16A: | |
4194 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
4195 | if (h != NULL) |
4196 | { | |
4197 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4198 | h->non_got_ref = TRUE; | |
4199 | } | |
4200 | break; | |
4201 | ||
b9c361e0 JL |
4202 | case R_PPC_VLE_REL8: |
4203 | case R_PPC_VLE_REL15: | |
4204 | case R_PPC_VLE_REL24: | |
4205 | case R_PPC_VLE_LO16A: | |
4206 | case R_PPC_VLE_LO16D: | |
4207 | case R_PPC_VLE_HI16A: | |
4208 | case R_PPC_VLE_HI16D: | |
4209 | case R_PPC_VLE_HA16A: | |
4210 | case R_PPC_VLE_HA16D: | |
83eef883 | 4211 | case R_PPC_VLE_ADDR20: |
b9c361e0 JL |
4212 | break; |
4213 | ||
25dbc73a | 4214 | case R_PPC_EMB_SDA2REL: |
0e1862bb | 4215 | if (bfd_link_pic (info)) |
046183de AM |
4216 | { |
4217 | bad_shared_reloc (abfd, r_type); | |
4218 | return FALSE; | |
4219 | } | |
93d1b056 | 4220 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
4221 | if (h != NULL) |
4222 | { | |
4223 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4224 | h->non_got_ref = TRUE; | |
4225 | } | |
4226 | break; | |
4227 | ||
b9c361e0 JL |
4228 | case R_PPC_VLE_SDA21_LO: |
4229 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
4230 | case R_PPC_EMB_SDA21: |
4231 | case R_PPC_EMB_RELSDA: | |
0e1862bb | 4232 | if (bfd_link_pic (info)) |
046183de AM |
4233 | { |
4234 | bad_shared_reloc (abfd, r_type); | |
4235 | return FALSE; | |
4236 | } | |
046183de AM |
4237 | if (h != NULL) |
4238 | { | |
4239 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4240 | h->non_got_ref = TRUE; | |
4241 | } | |
4242 | break; | |
4243 | ||
25dbc73a AM |
4244 | case R_PPC_EMB_NADDR32: |
4245 | case R_PPC_EMB_NADDR16: | |
4246 | case R_PPC_EMB_NADDR16_LO: | |
4247 | case R_PPC_EMB_NADDR16_HI: | |
4248 | case R_PPC_EMB_NADDR16_HA: | |
0e1862bb | 4249 | if (bfd_link_pic (info)) |
25dbc73a AM |
4250 | { |
4251 | bad_shared_reloc (abfd, r_type); | |
4252 | return FALSE; | |
4253 | } | |
4dc4a9a5 | 4254 | if (h != NULL) |
046183de | 4255 | h->non_got_ref = TRUE; |
25dbc73a | 4256 | break; |
252b5132 | 4257 | |
25dbc73a | 4258 | case R_PPC_PLTREL24: |
de972ffa | 4259 | if (h == NULL) |
6d78d0b9 AM |
4260 | break; |
4261 | /* Fall through */ | |
4262 | case R_PPC_PLT32: | |
25dbc73a AM |
4263 | case R_PPC_PLTREL32: |
4264 | case R_PPC_PLT16_LO: | |
4265 | case R_PPC_PLT16_HI: | |
4266 | case R_PPC_PLT16_HA: | |
4267 | #ifdef DEBUG | |
4268 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
4269 | #endif | |
cbf95972 | 4270 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
4271 | if (h == NULL) |
4272 | { | |
cbf95972 AM |
4273 | if (ifunc == NULL) |
4274 | { | |
4275 | /* It does not make sense to have a procedure linkage | |
4276 | table entry for a non-ifunc local symbol. */ | |
4277 | info->callbacks->einfo | |
695344c0 | 4278 | /* xgettext:c-format */ |
174d0a74 | 4279 | (_("%H: %s reloc against local symbol\n"), |
cbf95972 AM |
4280 | abfd, sec, rel->r_offset, |
4281 | ppc_elf_howto_table[r_type]->name); | |
4282 | bfd_set_error (bfd_error_bad_value); | |
4283 | return FALSE; | |
4284 | } | |
25dbc73a | 4285 | } |
a6aa5195 AM |
4286 | else |
4287 | { | |
016687f8 | 4288 | bfd_vma addend = 0; |
ee05f2fe | 4289 | |
016687f8 AM |
4290 | if (r_type == R_PPC_PLTREL24) |
4291 | { | |
4292 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4293 | if (bfd_link_pic (info)) |
a877a2b6 | 4294 | addend = rel->r_addend; |
016687f8 | 4295 | } |
a6aa5195 | 4296 | h->needs_plt = 1; |
32af9f6e | 4297 | if (!update_plt_info (abfd, &h->plt.plist, got2, addend)) |
a6aa5195 AM |
4298 | return FALSE; |
4299 | } | |
25dbc73a | 4300 | break; |
ee05f2fe | 4301 | |
25dbc73a AM |
4302 | /* The following relocations don't need to propagate the |
4303 | relocation if linking a shared object since they are | |
4304 | section relative. */ | |
4305 | case R_PPC_SECTOFF: | |
4306 | case R_PPC_SECTOFF_LO: | |
4307 | case R_PPC_SECTOFF_HI: | |
4308 | case R_PPC_SECTOFF_HA: | |
4309 | case R_PPC_DTPREL16: | |
4310 | case R_PPC_DTPREL16_LO: | |
4311 | case R_PPC_DTPREL16_HI: | |
4312 | case R_PPC_DTPREL16_HA: | |
4313 | case R_PPC_TOC16: | |
4314 | break; | |
252b5132 | 4315 | |
d7128ce4 AM |
4316 | case R_PPC_REL16: |
4317 | case R_PPC_REL16_LO: | |
4318 | case R_PPC_REL16_HI: | |
4319 | case R_PPC_REL16_HA: | |
a680de9a | 4320 | case R_PPC_REL16DX_HA: |
016687f8 | 4321 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
4322 | break; |
4323 | ||
a6aa5195 | 4324 | /* These are just markers. */ |
25dbc73a AM |
4325 | case R_PPC_TLS: |
4326 | case R_PPC_EMB_MRKREF: | |
4327 | case R_PPC_NONE: | |
4328 | case R_PPC_max: | |
32af9f6e AM |
4329 | case R_PPC_RELAX: |
4330 | case R_PPC_RELAX_PLT: | |
4331 | case R_PPC_RELAX_PLTREL24: | |
7ba71655 | 4332 | case R_PPC_16DX_HA: |
25dbc73a | 4333 | break; |
252b5132 | 4334 | |
25dbc73a AM |
4335 | /* These should only appear in dynamic objects. */ |
4336 | case R_PPC_COPY: | |
4337 | case R_PPC_GLOB_DAT: | |
4338 | case R_PPC_JMP_SLOT: | |
4339 | case R_PPC_RELATIVE: | |
e054468f | 4340 | case R_PPC_IRELATIVE: |
25dbc73a | 4341 | break; |
252b5132 | 4342 | |
25dbc73a AM |
4343 | /* These aren't handled yet. We'll report an error later. */ |
4344 | case R_PPC_ADDR30: | |
4345 | case R_PPC_EMB_RELSEC16: | |
4346 | case R_PPC_EMB_RELST_LO: | |
4347 | case R_PPC_EMB_RELST_HI: | |
4348 | case R_PPC_EMB_RELST_HA: | |
4349 | case R_PPC_EMB_BIT_FLD: | |
4350 | break; | |
252b5132 | 4351 | |
25dbc73a AM |
4352 | /* This refers only to functions defined in the shared library. */ |
4353 | case R_PPC_LOCAL24PC: | |
727fc41e | 4354 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
4355 | { |
4356 | htab->plt_type = PLT_OLD; | |
4357 | htab->old_bfd = abfd; | |
4358 | } | |
c7e17e05 AM |
4359 | if (h != NULL && h->type == STT_GNU_IFUNC) |
4360 | { | |
c7e17e05 AM |
4361 | h->needs_plt = 1; |
4362 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4363 | return FALSE; | |
4364 | } | |
25dbc73a | 4365 | break; |
252b5132 | 4366 | |
25dbc73a AM |
4367 | /* This relocation describes the C++ object vtable hierarchy. |
4368 | Reconstruct it for later use during GC. */ | |
4369 | case R_PPC_GNU_VTINHERIT: | |
4370 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4371 | return FALSE; | |
4372 | break; | |
252b5132 | 4373 | |
25dbc73a AM |
4374 | /* This relocation describes which C++ vtable entries are actually |
4375 | used. Record for later use during GC. */ | |
4376 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
4377 | BFD_ASSERT (h != NULL); |
4378 | if (h != NULL | |
4379 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
4380 | return FALSE; |
4381 | break; | |
252b5132 | 4382 | |
7c8bbca5 | 4383 | /* We shouldn't really be seeing TPREL32. */ |
25dbc73a | 4384 | case R_PPC_TPREL32: |
1d483afe AM |
4385 | case R_PPC_TPREL16: |
4386 | case R_PPC_TPREL16_LO: | |
4387 | case R_PPC_TPREL16_HI: | |
4388 | case R_PPC_TPREL16_HA: | |
7c8bbca5 | 4389 | if (bfd_link_dll (info)) |
25dbc73a AM |
4390 | info->flags |= DF_STATIC_TLS; |
4391 | goto dodyn; | |
252b5132 | 4392 | |
25dbc73a AM |
4393 | /* Nor these. */ |
4394 | case R_PPC_DTPMOD32: | |
4395 | case R_PPC_DTPREL32: | |
4396 | goto dodyn; | |
252b5132 | 4397 | |
9edfd1af AM |
4398 | case R_PPC_REL32: |
4399 | if (h == NULL | |
4400 | && got2 != NULL | |
4401 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 4402 | && bfd_link_pic (info) |
4a3dc543 | 4403 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
4404 | { |
4405 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
4406 | the start of a function, which assembles to a REL32 | |
4407 | reference to .got2. If we detect one of these, then | |
4408 | force the old PLT layout because the linker cannot | |
4409 | reliably deduce the GOT pointer value needed for | |
4410 | PLT call stubs. */ | |
4411 | asection *s; | |
87d72d41 | 4412 | Elf_Internal_Sym *isym; |
9edfd1af | 4413 | |
87d72d41 AM |
4414 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4415 | abfd, r_symndx); | |
4416 | if (isym == NULL) | |
4417 | return FALSE; | |
4418 | ||
4419 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 4420 | if (s == got2) |
016687f8 AM |
4421 | { |
4422 | htab->plt_type = PLT_OLD; | |
4423 | htab->old_bfd = abfd; | |
4424 | } | |
9edfd1af | 4425 | } |
7123df0e | 4426 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 4427 | break; |
625af618 AM |
4428 | /* fall through */ |
4429 | ||
4430 | case R_PPC_ADDR32: | |
4431 | case R_PPC_ADDR16: | |
4432 | case R_PPC_ADDR16_LO: | |
4433 | case R_PPC_ADDR16_HI: | |
4434 | case R_PPC_ADDR16_HA: | |
4435 | case R_PPC_UADDR32: | |
4436 | case R_PPC_UADDR16: | |
0e1862bb | 4437 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
4438 | { |
4439 | /* We may need a plt entry if the symbol turns out to be | |
4440 | a function defined in a dynamic object. */ | |
3ec01793 | 4441 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
4442 | return FALSE; |
4443 | ||
4444 | /* We may need a copy reloc too. */ | |
4445 | h->non_got_ref = 1; | |
4446 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
4447 | if (r_type == R_PPC_ADDR16_HA) |
4448 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
4449 | if (r_type == R_PPC_ADDR16_LO) | |
4450 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
4451 | } |
4452 | goto dodyn; | |
9edfd1af | 4453 | |
25dbc73a AM |
4454 | case R_PPC_REL24: |
4455 | case R_PPC_REL14: | |
4456 | case R_PPC_REL14_BRTAKEN: | |
4457 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 4458 | if (h == NULL) |
25dbc73a | 4459 | break; |
7123df0e | 4460 | if (h == htab->elf.hgot) |
d7128ce4 | 4461 | { |
7123df0e | 4462 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4463 | { |
4464 | htab->plt_type = PLT_OLD; | |
4465 | htab->old_bfd = abfd; | |
4466 | } | |
d7128ce4 AM |
4467 | break; |
4468 | } | |
25dbc73a | 4469 | /* fall through */ |
ee05f2fe | 4470 | |
25dbc73a | 4471 | case R_PPC_ADDR24: |
25dbc73a AM |
4472 | case R_PPC_ADDR14: |
4473 | case R_PPC_ADDR14_BRTAKEN: | |
4474 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 4475 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
4476 | { |
4477 | /* We may need a plt entry if the symbol turns out to be | |
4478 | a function defined in a dynamic object. */ | |
e054468f | 4479 | h->needs_plt = 1; |
de972ffa | 4480 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 4481 | return FALSE; |
625af618 | 4482 | break; |
25dbc73a | 4483 | } |
7619e7c7 | 4484 | |
25dbc73a AM |
4485 | dodyn: |
4486 | /* If we are creating a shared library, and this is a reloc | |
4487 | against a global symbol, or a non PC relative reloc | |
4488 | against a local symbol, then we need to copy the reloc | |
4489 | into the shared library. However, if we are linking with | |
4490 | -Bsymbolic, we do not need to copy a reloc against a | |
4491 | global symbol which is defined in an object we are | |
4492 | including in the link (i.e., DEF_REGULAR is set). At | |
4493 | this point we have not seen all the input files, so it is | |
4494 | possible that DEF_REGULAR is not set now but will be set | |
4495 | later (it is never cleared). In case of a weak definition, | |
4496 | DEF_REGULAR may be cleared later by a strong definition in | |
4497 | a shared library. We account for that possibility below by | |
4498 | storing information in the dyn_relocs field of the hash | |
4499 | table entry. A similar situation occurs when creating | |
4500 | shared libraries and symbol visibility changes render the | |
4501 | symbol local. | |
7619e7c7 | 4502 | |
25dbc73a AM |
4503 | If on the other hand, we are creating an executable, we |
4504 | may need to keep relocations for symbols satisfied by a | |
4505 | dynamic library if we manage to avoid copy relocs for the | |
4506 | symbol. */ | |
0e1862bb | 4507 | if ((bfd_link_pic (info) |
1d483afe | 4508 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 4509 | || (h != NULL |
198f1157 | 4510 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
4511 | || h->root.type == bfd_link_hash_defweak |
4512 | || !h->def_regular)))) | |
4513 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 4514 | && !bfd_link_pic (info) |
25dbc73a AM |
4515 | && h != NULL |
4516 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 4517 | || !h->def_regular))) |
25dbc73a | 4518 | { |
25dbc73a AM |
4519 | #ifdef DEBUG |
4520 | fprintf (stderr, | |
4521 | "ppc_elf_check_relocs needs to " | |
4522 | "create relocation for %s\n", | |
4523 | (h && h->root.root.string | |
4524 | ? h->root.root.string : "<unknown>")); | |
4525 | #endif | |
4526 | if (sreloc == NULL) | |
4527 | { | |
c9a2f333 AM |
4528 | if (htab->elf.dynobj == NULL) |
4529 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
4530 | |
4531 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
4532 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
4533 | ||
25dbc73a | 4534 | if (sreloc == NULL) |
83bac4b0 | 4535 | return FALSE; |
25dbc73a | 4536 | } |
7619e7c7 | 4537 | |
25dbc73a AM |
4538 | /* If this is a global symbol, we count the number of |
4539 | relocations we need for this symbol. */ | |
4540 | if (h != NULL) | |
4541 | { | |
f95f8542 AM |
4542 | struct elf_dyn_relocs *p; |
4543 | struct elf_dyn_relocs **rel_head; | |
4544 | ||
91d6fa6a | 4545 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
4546 | p = *rel_head; |
4547 | if (p == NULL || p->sec != sec) | |
4548 | { | |
4549 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4550 | if (p == NULL) | |
4551 | return FALSE; | |
4552 | p->next = *rel_head; | |
4553 | *rel_head = p; | |
4554 | p->sec = sec; | |
4555 | p->count = 0; | |
4556 | p->pc_count = 0; | |
4557 | } | |
4558 | p->count += 1; | |
4559 | if (!must_be_dyn_reloc (info, r_type)) | |
4560 | p->pc_count += 1; | |
25dbc73a AM |
4561 | } |
4562 | else | |
4563 | { | |
4564 | /* Track dynamic relocs needed for local syms too. | |
4565 | We really need local syms available to do this | |
4566 | easily. Oh well. */ | |
f95f8542 AM |
4567 | struct ppc_dyn_relocs *p; |
4568 | struct ppc_dyn_relocs **rel_head; | |
4569 | bfd_boolean is_ifunc; | |
25dbc73a | 4570 | asection *s; |
6edfbbad | 4571 | void *vpp; |
87d72d41 | 4572 | Elf_Internal_Sym *isym; |
6edfbbad | 4573 | |
87d72d41 AM |
4574 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4575 | abfd, r_symndx); | |
4576 | if (isym == NULL) | |
25dbc73a | 4577 | return FALSE; |
7fce784e | 4578 | |
87d72d41 AM |
4579 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4580 | if (s == NULL) | |
4581 | s = sec; | |
4582 | ||
6edfbbad | 4583 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
4584 | rel_head = (struct ppc_dyn_relocs **) vpp; |
4585 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4586 | p = *rel_head; | |
4587 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4588 | p = p->next; | |
4589 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4590 | { | |
4591 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4592 | if (p == NULL) | |
4593 | return FALSE; | |
4594 | p->next = *rel_head; | |
4595 | *rel_head = p; | |
4596 | p->sec = sec; | |
4597 | p->ifunc = is_ifunc; | |
4598 | p->count = 0; | |
4599 | } | |
4600 | p->count += 1; | |
25dbc73a | 4601 | } |
7619e7c7 | 4602 | } |
25dbc73a AM |
4603 | |
4604 | break; | |
7619e7c7 AM |
4605 | } |
4606 | } | |
ee05f2fe | 4607 | |
25dbc73a AM |
4608 | return TRUE; |
4609 | } | |
4610 | \f | |
005d79fd AM |
4611 | /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD |
4612 | and OBFD, and merge non-conflicting ones. */ | |
4613 | void | |
50e03d47 | 4614 | _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info) |
34c8bcba | 4615 | { |
50e03d47 | 4616 | bfd *obfd = info->output_bfd; |
c6e65352 DJ |
4617 | obj_attribute *in_attr, *in_attrs; |
4618 | obj_attribute *out_attr, *out_attrs; | |
34c8bcba | 4619 | |
c6e65352 DJ |
4620 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4621 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4622 | ||
c6e65352 DJ |
4623 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4624 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
005d79fd | 4625 | |
c6e65352 | 4626 | if (in_attr->i != out_attr->i) |
34c8bcba | 4627 | { |
005d79fd AM |
4628 | int in_fp = in_attr->i & 3; |
4629 | int out_fp = out_attr->i & 3; | |
4630 | ||
4631 | if (in_fp == 0) | |
34c8bcba | 4632 | ; |
005d79fd AM |
4633 | else if (out_fp == 0) |
4634 | { | |
4635 | out_attr->type = 1; | |
4636 | out_attr->i ^= in_fp; | |
4637 | } | |
4638 | else if (out_fp != 2 && in_fp == 2) | |
34c8bcba | 4639 | _bfd_error_handler |
695344c0 | 4640 | /* xgettext:c-format */ |
871b3ab2 | 4641 | (_("Warning: %pB uses hard float, %pB uses soft float"), obfd, ibfd); |
005d79fd AM |
4642 | else if (out_fp == 2 && in_fp != 2) |
4643 | _bfd_error_handler | |
695344c0 | 4644 | /* xgettext:c-format */ |
871b3ab2 | 4645 | (_("Warning: %pB uses hard float, %pB uses soft float"), ibfd, obfd); |
005d79fd | 4646 | else if (out_fp == 1 && in_fp == 3) |
3c7b9897 | 4647 | _bfd_error_handler |
695344c0 | 4648 | /* xgettext:c-format */ |
871b3ab2 AM |
4649 | (_("Warning: %pB uses double-precision hard float, " |
4650 | "%pB uses single-precision hard float"), obfd, ibfd); | |
005d79fd | 4651 | else if (out_fp == 3 && in_fp == 1) |
3c7b9897 | 4652 | _bfd_error_handler |
695344c0 | 4653 | /* xgettext:c-format */ |
871b3ab2 AM |
4654 | (_("Warning: %pB uses double-precision hard float, " |
4655 | "%pB uses single-precision hard float"), ibfd, obfd); | |
005d79fd AM |
4656 | |
4657 | in_fp = in_attr->i & 0xc; | |
4658 | out_fp = out_attr->i & 0xc; | |
4659 | if (in_fp == 0) | |
4660 | ; | |
4661 | else if (out_fp == 0) | |
4662 | { | |
4663 | out_attr->type = 1; | |
4664 | out_attr->i ^= in_fp; | |
4665 | } | |
4666 | else if (out_fp != 2 * 4 && in_fp == 2 * 4) | |
3c7b9897 | 4667 | _bfd_error_handler |
695344c0 | 4668 | /* xgettext:c-format */ |
871b3ab2 AM |
4669 | (_("Warning: %pB uses 64-bit long double, " |
4670 | "%pB uses 128-bit long double"), ibfd, obfd); | |
005d79fd | 4671 | else if (in_fp != 2 * 4 && out_fp == 2 * 4) |
34c8bcba | 4672 | _bfd_error_handler |
695344c0 | 4673 | /* xgettext:c-format */ |
871b3ab2 AM |
4674 | (_("Warning: %pB uses 64-bit long double, " |
4675 | "%pB uses 128-bit long double"), obfd, ibfd); | |
005d79fd | 4676 | else if (out_fp == 1 * 4 && in_fp == 3 * 4) |
34c8bcba | 4677 | _bfd_error_handler |
695344c0 | 4678 | /* xgettext:c-format */ |
871b3ab2 AM |
4679 | (_("Warning: %pB uses IBM long double, " |
4680 | "%pB uses IEEE long double"), ibfd, obfd); | |
005d79fd | 4681 | else if (out_fp == 3 * 4 && in_fp == 1 * 4) |
34c8bcba | 4682 | _bfd_error_handler |
695344c0 | 4683 | /* xgettext:c-format */ |
871b3ab2 AM |
4684 | (_("Warning: %pB uses IBM long double, " |
4685 | "%pB uses IEEE long double"), obfd, ibfd); | |
c6e65352 | 4686 | } |
005d79fd AM |
4687 | } |
4688 | ||
4689 | /* Merge object attributes from IBFD into OBFD. Warn if | |
4690 | there are conflicting attributes. */ | |
4691 | static bfd_boolean | |
50e03d47 | 4692 | ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
005d79fd | 4693 | { |
50e03d47 | 4694 | bfd *obfd; |
005d79fd AM |
4695 | obj_attribute *in_attr, *in_attrs; |
4696 | obj_attribute *out_attr, *out_attrs; | |
4697 | ||
50e03d47 | 4698 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 4699 | |
50e03d47 | 4700 | obfd = info->output_bfd; |
005d79fd AM |
4701 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4702 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
c6e65352 DJ |
4703 | |
4704 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4705 | merge non-conflicting ones. */ | |
4706 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4707 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4708 | if (in_attr->i != out_attr->i) | |
4709 | { | |
005d79fd AM |
4710 | int in_vec = in_attr->i & 3; |
4711 | int out_vec = out_attr->i & 3; | |
c6e65352 | 4712 | |
005d79fd AM |
4713 | if (in_vec == 0) |
4714 | ; | |
4715 | else if (out_vec == 0) | |
c6e65352 | 4716 | { |
005d79fd AM |
4717 | out_attr->type = 1; |
4718 | out_attr->i = in_vec; | |
c6e65352 | 4719 | } |
c6e65352 DJ |
4720 | /* For now, allow generic to transition to AltiVec or SPE |
4721 | without a warning. If GCC marked files with their stack | |
4722 | alignment and used don't-care markings for files which are | |
4723 | not affected by the vector ABI, we could warn about this | |
4724 | case too. */ | |
005d79fd | 4725 | else if (in_vec == 1) |
c6e65352 | 4726 | ; |
005d79fd AM |
4727 | else if (out_vec == 1) |
4728 | { | |
4729 | out_attr->type = 1; | |
4730 | out_attr->i = in_vec; | |
4731 | } | |
4732 | else if (out_vec < in_vec) | |
c6e65352 | 4733 | _bfd_error_handler |
695344c0 | 4734 | /* xgettext:c-format */ |
871b3ab2 | 4735 | (_("Warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
005d79fd AM |
4736 | obfd, ibfd); |
4737 | else if (out_vec > in_vec) | |
c6e65352 | 4738 | _bfd_error_handler |
695344c0 | 4739 | /* xgettext:c-format */ |
871b3ab2 | 4740 | (_("Warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
005d79fd | 4741 | ibfd, obfd); |
34c8bcba JM |
4742 | } |
4743 | ||
f82e0623 NF |
4744 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4745 | and merge non-conflicting ones. */ | |
4746 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4747 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4748 | if (in_attr->i != out_attr->i) | |
4749 | { | |
005d79fd AM |
4750 | int in_struct = in_attr->i & 3; |
4751 | int out_struct = out_attr->i & 3; | |
4752 | ||
4753 | if (in_struct == 0 || in_struct == 3) | |
f82e0623 | 4754 | ; |
005d79fd AM |
4755 | else if (out_struct == 0) |
4756 | { | |
4757 | out_attr->type = 1; | |
4758 | out_attr->i = in_struct; | |
4759 | } | |
4760 | else if (out_struct < in_struct) | |
4761 | _bfd_error_handler | |
695344c0 | 4762 | /* xgettext:c-format */ |
871b3ab2 AM |
4763 | (_("Warning: %pB uses r3/r4 for small structure returns, " |
4764 | "%pB uses memory"), obfd, ibfd); | |
005d79fd AM |
4765 | else if (out_struct > in_struct) |
4766 | _bfd_error_handler | |
695344c0 | 4767 | /* xgettext:c-format */ |
871b3ab2 AM |
4768 | (_("Warning: %pB uses r3/r4 for small structure returns, " |
4769 | "%pB uses memory"), ibfd, obfd); | |
f82e0623 NF |
4770 | } |
4771 | ||
34c8bcba | 4772 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 4773 | _bfd_elf_merge_object_attributes (ibfd, info); |
34c8bcba JM |
4774 | |
4775 | return TRUE; | |
4776 | } | |
4777 | ||
8853c3d3 AM |
4778 | /* Merge backend specific data from an object file to the output |
4779 | object file when linking. */ | |
4780 | ||
4781 | static bfd_boolean | |
50e03d47 | 4782 | ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
8853c3d3 | 4783 | { |
50e03d47 | 4784 | bfd *obfd = info->output_bfd; |
8853c3d3 AM |
4785 | flagword old_flags; |
4786 | flagword new_flags; | |
4787 | bfd_boolean error; | |
4788 | ||
0c8d6e5c | 4789 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4790 | return TRUE; |
4791 | ||
cc643b88 | 4792 | /* Check if we have the same endianness. */ |
50e03d47 | 4793 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
8853c3d3 AM |
4794 | return FALSE; |
4795 | ||
50e03d47 | 4796 | if (!ppc_elf_merge_obj_attributes (ibfd, info)) |
34c8bcba JM |
4797 | return FALSE; |
4798 | ||
8853c3d3 AM |
4799 | new_flags = elf_elfheader (ibfd)->e_flags; |
4800 | old_flags = elf_elfheader (obfd)->e_flags; | |
4801 | if (!elf_flags_init (obfd)) | |
4802 | { | |
4803 | /* First call, no flags set. */ | |
4804 | elf_flags_init (obfd) = TRUE; | |
4805 | elf_elfheader (obfd)->e_flags = new_flags; | |
4806 | } | |
4807 | ||
4808 | /* Compatible flags are ok. */ | |
4809 | else if (new_flags == old_flags) | |
4810 | ; | |
4811 | ||
4812 | /* Incompatible flags. */ | |
4813 | else | |
4814 | { | |
4815 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4816 | to be linked with either. */ | |
4817 | error = FALSE; | |
4818 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4819 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4820 | { | |
4821 | error = TRUE; | |
4eca0228 | 4822 | _bfd_error_handler |
871b3ab2 | 4823 | (_("%pB: compiled with -mrelocatable and linked with " |
8853c3d3 AM |
4824 | "modules compiled normally"), ibfd); |
4825 | } | |
4826 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4827 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4828 | { | |
4829 | error = TRUE; | |
4eca0228 | 4830 | _bfd_error_handler |
871b3ab2 | 4831 | (_("%pB: compiled normally and linked with " |
8853c3d3 AM |
4832 | "modules compiled with -mrelocatable"), ibfd); |
4833 | } | |
4834 | ||
4835 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
4836 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
4837 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
4838 | ||
4839 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
4840 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
4841 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
4842 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
4843 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
4844 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
4845 | ||
4846 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
4847 | any module uses it. */ | |
4848 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
4849 | ||
4850 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4851 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4852 | ||
4853 | /* Warn about any other mismatches. */ | |
4854 | if (new_flags != old_flags) | |
4855 | { | |
4856 | error = TRUE; | |
4eca0228 | 4857 | _bfd_error_handler |
695344c0 | 4858 | /* xgettext:c-format */ |
871b3ab2 | 4859 | (_("%pB: uses different e_flags (%#x) fields " |
cd9af601 AM |
4860 | "than previous modules (%#x)"), |
4861 | ibfd, new_flags, old_flags); | |
8853c3d3 AM |
4862 | } |
4863 | ||
4864 | if (error) | |
4865 | { | |
4866 | bfd_set_error (bfd_error_bad_value); | |
4867 | return FALSE; | |
4868 | } | |
4869 | } | |
4870 | ||
4871 | return TRUE; | |
4872 | } | |
b9c361e0 JL |
4873 | |
4874 | static void | |
95f0d0d2 | 4875 | ppc_elf_vle_split16 (bfd *input_bfd, |
08dc996f AM |
4876 | asection *input_section, |
4877 | unsigned long offset, | |
95f0d0d2 | 4878 | bfd_byte *loc, |
86c95733 | 4879 | bfd_vma value, |
08dc996f AM |
4880 | split16_format_type split16_format, |
4881 | bfd_boolean fixup) | |
b9c361e0 | 4882 | { |
08dc996f | 4883 | unsigned int insn, opcode, top5; |
b9c361e0 | 4884 | |
95f0d0d2 | 4885 | insn = bfd_get_32 (input_bfd, loc); |
673cff9b | 4886 | opcode = insn & 0xfc00f800; |
08dc996f AM |
4887 | if (opcode == E_OR2I_INSN |
4888 | || opcode == E_AND2I_DOT_INSN | |
4889 | || opcode == E_OR2IS_INSN | |
4890 | || opcode == E_LIS_INSN | |
4891 | || opcode == E_AND2IS_DOT_INSN) | |
4892 | { | |
4893 | if (split16_format != split16a_type) | |
4894 | { | |
4895 | if (fixup) | |
4896 | split16_format = split16a_type; | |
4897 | else | |
4898 | _bfd_error_handler | |
4899 | /* xgettext:c-format */ | |
871b3ab2 | 4900 | (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"), |
08dc996f AM |
4901 | input_bfd, input_section, offset, opcode); |
4902 | } | |
4903 | } | |
4904 | else if (opcode == E_ADD2I_DOT_INSN | |
4905 | || opcode == E_ADD2IS_INSN | |
4906 | || opcode == E_CMP16I_INSN | |
4907 | || opcode == E_MULL2I_INSN | |
4908 | || opcode == E_CMPL16I_INSN | |
4909 | || opcode == E_CMPH16I_INSN | |
4910 | || opcode == E_CMPHL16I_INSN) | |
4911 | { | |
4912 | if (split16_format != split16d_type) | |
4913 | { | |
4914 | if (fixup) | |
4915 | split16_format = split16d_type; | |
4916 | else | |
4917 | _bfd_error_handler | |
4918 | /* xgettext:c-format */ | |
871b3ab2 | 4919 | (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"), |
08dc996f AM |
4920 | input_bfd, input_section, offset, opcode); |
4921 | } | |
4922 | } | |
86c95733 | 4923 | top5 = value & 0xf800; |
5499c7c7 AM |
4924 | top5 = top5 << (split16_format == split16a_type ? 5 : 10); |
4925 | insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff); | |
b9c361e0 | 4926 | insn |= top5; |
86c95733 | 4927 | insn |= value & 0x7ff; |
95f0d0d2 | 4928 | bfd_put_32 (input_bfd, insn, loc); |
b9c361e0 | 4929 | } |
83eef883 AFB |
4930 | |
4931 | static void | |
4932 | ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value) | |
4933 | { | |
4934 | unsigned int insn; | |
4935 | ||
4936 | insn = bfd_get_32 (output_bfd, loc); | |
4937 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
4938 | /* Top 4 bits of value to 17..20. */ | |
4939 | insn |= (value & 0xf0000) >> 5; | |
4940 | /* Next 5 bits of the value to 11..15. */ | |
4941 | insn |= (value & 0xf800) << 5; | |
4942 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
4943 | insn |= value & 0x7ff; | |
4944 | bfd_put_32 (output_bfd, insn, loc); | |
4945 | } | |
4946 | ||
8853c3d3 | 4947 | \f |
d7128ce4 AM |
4948 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
4949 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
4950 | int | |
4951 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 4952 | struct bfd_link_info *info) |
d7128ce4 AM |
4953 | { |
4954 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 4955 | flagword flags; |
d7128ce4 AM |
4956 | |
4957 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
4958 | |
4959 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 4960 | { |
b3874e1a AM |
4961 | struct elf_link_hash_entry *h; |
4962 | ||
5446cbdf | 4963 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 4964 | htab->plt_type = PLT_OLD; |
0e1862bb | 4965 | else if (bfd_link_pic (info) |
b3874e1a AM |
4966 | && htab->elf.dynamic_sections_created |
4967 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
4968 | FALSE, FALSE, TRUE)) != NULL | |
4969 | && (h->type == STT_FUNC | |
4970 | || h->needs_plt) | |
4971 | && h->ref_regular | |
4972 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
21d68fcd | 4973 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
b3874e1a AM |
4974 | { |
4975 | /* Profiling of shared libs (and pies) is not supported with | |
4976 | secure plt, because ppc32 does profiling before a | |
4977 | function prologue and a secure plt pic call stubs needs | |
4978 | r30 to be set up. */ | |
4979 | htab->plt_type = PLT_OLD; | |
4980 | } | |
016687f8 AM |
4981 | else |
4982 | { | |
4983 | bfd *ibfd; | |
5446cbdf | 4984 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4985 | |
4986 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4987 | Use the old style bss plt if a file makes plt calls | |
4988 | without using the new relocs, and if ld isn't given | |
4989 | --secure-plt and we never see REL16 relocs. */ | |
4990 | if (plt_type == PLT_UNSET) | |
4991 | plt_type = PLT_OLD; | |
c72f2fb2 | 4992 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4993 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4994 | { |
4995 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4996 | plt_type = PLT_NEW; | |
4997 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4998 | { | |
4999 | plt_type = PLT_OLD; | |
5000 | htab->old_bfd = ibfd; | |
5001 | break; | |
5002 | } | |
5003 | } | |
5004 | htab->plt_type = plt_type; | |
5005 | } | |
5006 | } | |
5446cbdf | 5007 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
5008 | { |
5009 | if (htab->old_bfd != NULL) | |
871b3ab2 | 5010 | info->callbacks->einfo (_("%P: bss-plt forced due to %pB\n"), |
b3874e1a AM |
5011 | htab->old_bfd); |
5012 | else | |
5013 | info->callbacks->einfo (_("%P: bss-plt forced by profiling\n")); | |
5014 | } | |
d7128ce4 | 5015 | |
4a3dc543 | 5016 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 5017 | |
4a3dc543 | 5018 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
5019 | { |
5020 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
5021 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
5022 | |
5023 | /* The new PLT is a loaded section. */ | |
ce558b89 AM |
5024 | if (htab->elf.splt != NULL |
5025 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags)) | |
86b9da88 AM |
5026 | return -1; |
5027 | ||
5028 | /* The new GOT is not executable. */ | |
ce558b89 AM |
5029 | if (htab->elf.sgot != NULL |
5030 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags)) | |
86b9da88 | 5031 | return -1; |
d7128ce4 AM |
5032 | } |
5033 | else | |
5034 | { | |
5035 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
5036 | if (htab->glink != NULL |
5037 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
5038 | return -1; | |
d7128ce4 | 5039 | } |
4a3dc543 | 5040 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
5041 | } |
5042 | \f | |
25dbc73a AM |
5043 | /* Return the section that should be marked against GC for a given |
5044 | relocation. */ | |
586119b3 | 5045 | |
25dbc73a AM |
5046 | static asection * |
5047 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 5048 | struct bfd_link_info *info, |
25dbc73a AM |
5049 | Elf_Internal_Rela *rel, |
5050 | struct elf_link_hash_entry *h, | |
5051 | Elf_Internal_Sym *sym) | |
5052 | { | |
5053 | if (h != NULL) | |
07adf181 AM |
5054 | switch (ELF32_R_TYPE (rel->r_info)) |
5055 | { | |
5056 | case R_PPC_GNU_VTINHERIT: | |
5057 | case R_PPC_GNU_VTENTRY: | |
5058 | return NULL; | |
5059 | } | |
5060 | ||
5061 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 5062 | } |
25dbc73a | 5063 | \f |
3a71aa26 AM |
5064 | /* Set plt output section type, htab->tls_get_addr, and call the |
5065 | generic ELF tls_setup function. */ | |
7fce784e | 5066 | |
25dbc73a | 5067 | asection * |
5446cbdf | 5068 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 5069 | { |
25dbc73a | 5070 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 5071 | |
25dbc73a | 5072 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
5073 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5074 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
5075 | if (htab->plt_type != PLT_NEW) |
5076 | htab->params->no_tls_get_addr_opt = TRUE; | |
5077 | ||
5446cbdf | 5078 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
5079 | { |
5080 | struct elf_link_hash_entry *opt, *tga; | |
5081 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
5082 | FALSE, FALSE, TRUE); | |
5083 | if (opt != NULL | |
5084 | && (opt->root.type == bfd_link_hash_defined | |
5085 | || opt->root.type == bfd_link_hash_defweak)) | |
5086 | { | |
5087 | /* If glibc supports an optimized __tls_get_addr call stub, | |
5088 | signalled by the presence of __tls_get_addr_opt, and we'll | |
5089 | be calling __tls_get_addr via a plt call stub, then | |
5090 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
5091 | tga = htab->tls_get_addr; | |
5092 | if (htab->elf.dynamic_sections_created | |
5093 | && tga != NULL | |
5094 | && (tga->type == STT_FUNC | |
5095 | || tga->needs_plt) | |
5096 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
21d68fcd | 5097 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga))) |
a7f2871e AM |
5098 | { |
5099 | struct plt_entry *ent; | |
32af9f6e AM |
5100 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
5101 | if (ent->plt.refcount > 0) | |
5102 | break; | |
5103 | if (ent != NULL) | |
a7f2871e AM |
5104 | { |
5105 | tga->root.type = bfd_link_hash_indirect; | |
5106 | tga->root.u.i.link = &opt->root; | |
5107 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 5108 | opt->mark = 1; |
a7f2871e AM |
5109 | if (opt->dynindx != -1) |
5110 | { | |
5111 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
5112 | opt->dynindx = -1; | |
5113 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5114 | opt->dynstr_index); | |
5115 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
5116 | return FALSE; | |
5117 | } | |
5118 | htab->tls_get_addr = opt; | |
5119 | } | |
5120 | } | |
5121 | } | |
5122 | else | |
5446cbdf | 5123 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 5124 | } |
4a3dc543 | 5125 | if (htab->plt_type == PLT_NEW |
ce558b89 AM |
5126 | && htab->elf.splt != NULL |
5127 | && htab->elf.splt->output_section != NULL) | |
d7128ce4 | 5128 | { |
ce558b89 AM |
5129 | elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS; |
5130 | elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE; | |
d7128ce4 AM |
5131 | } |
5132 | ||
25dbc73a | 5133 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
5134 | } |
5135 | ||
3a71aa26 AM |
5136 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
5137 | HASH. */ | |
5138 | ||
5139 | static bfd_boolean | |
5140 | branch_reloc_hash_match (const bfd *ibfd, | |
5141 | const Elf_Internal_Rela *rel, | |
5142 | const struct elf_link_hash_entry *hash) | |
5143 | { | |
5144 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5145 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
5146 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
5147 | ||
e054468f | 5148 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
5149 | { |
5150 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5151 | struct elf_link_hash_entry *h; | |
5152 | ||
5153 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5154 | while (h->root.type == bfd_link_hash_indirect | |
5155 | || h->root.type == bfd_link_hash_warning) | |
5156 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5157 | if (h == hash) | |
5158 | return TRUE; | |
5159 | } | |
5160 | return FALSE; | |
5161 | } | |
5162 | ||
25dbc73a AM |
5163 | /* Run through all the TLS relocs looking for optimization |
5164 | opportunities. */ | |
252b5132 | 5165 | |
25dbc73a AM |
5166 | bfd_boolean |
5167 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
5168 | struct bfd_link_info *info) | |
252b5132 | 5169 | { |
7fce784e | 5170 | bfd *ibfd; |
25dbc73a AM |
5171 | asection *sec; |
5172 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 5173 | int pass; |
252b5132 | 5174 | |
3cbc1e5e | 5175 | if (!bfd_link_executable (info)) |
25dbc73a | 5176 | return TRUE; |
252b5132 | 5177 | |
7619e7c7 | 5178 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
5179 | if (htab == NULL) |
5180 | return FALSE; | |
5181 | ||
b7fcf6f6 AM |
5182 | /* Make two passes through the relocs. First time check that tls |
5183 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
5184 | followed by such a call. If they are not, don't do any tls |
5185 | optimization. On the second pass twiddle tls_mask flags to | |
5186 | notify relocate_section that optimization can be done, and | |
5187 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 5188 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 5189 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 AM |
5190 | { |
5191 | Elf_Internal_Sym *locsyms = NULL; | |
0ffa91dd | 5192 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 5193 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 5194 | |
b7fcf6f6 AM |
5195 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
5196 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5197 | { | |
5198 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 5199 | int expecting_tls_get_addr = 0; |
252b5132 | 5200 | |
b7fcf6f6 AM |
5201 | /* Read the relocations. */ |
5202 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5203 | info->keep_memory); | |
5204 | if (relstart == NULL) | |
5205 | return FALSE; | |
7619e7c7 | 5206 | |
b7fcf6f6 AM |
5207 | relend = relstart + sec->reloc_count; |
5208 | for (rel = relstart; rel < relend; rel++) | |
5209 | { | |
5210 | enum elf_ppc_reloc_type r_type; | |
5211 | unsigned long r_symndx; | |
5212 | struct elf_link_hash_entry *h = NULL; | |
5213 | char *tls_mask; | |
5214 | char tls_set, tls_clear; | |
5215 | bfd_boolean is_local; | |
b7fcf6f6 AM |
5216 | bfd_signed_vma *got_count; |
5217 | ||
5218 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5219 | if (r_symndx >= symtab_hdr->sh_info) | |
5220 | { | |
5221 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 5222 | |
b7fcf6f6 AM |
5223 | sym_hashes = elf_sym_hashes (ibfd); |
5224 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5225 | while (h->root.type == bfd_link_hash_indirect | |
5226 | || h->root.type == bfd_link_hash_warning) | |
5227 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5228 | } | |
7619e7c7 | 5229 | |
b7fcf6f6 AM |
5230 | is_local = FALSE; |
5231 | if (h == NULL | |
5232 | || !h->def_dynamic) | |
5233 | is_local = TRUE; | |
7619e7c7 | 5234 | |
b7fcf6f6 | 5235 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
5236 | /* If this section has old-style __tls_get_addr calls |
5237 | without marker relocs, then check that each | |
5238 | __tls_get_addr call reloc is preceded by a reloc | |
5239 | that conceivably belongs to the __tls_get_addr arg | |
5240 | setup insn. If we don't find matching arg setup | |
5241 | relocs, don't do any tls optimization. */ | |
5242 | if (pass == 0 | |
5243 | && sec->has_tls_get_addr_call | |
5244 | && h != NULL | |
5245 | && h == htab->tls_get_addr | |
5246 | && !expecting_tls_get_addr | |
5247 | && is_branch_reloc (r_type)) | |
5248 | { | |
25f53a85 | 5249 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
5250 | "TLS optimization disabled\n", |
5251 | ibfd, sec, rel->r_offset); | |
5252 | if (elf_section_data (sec)->relocs != relstart) | |
5253 | free (relstart); | |
5254 | return TRUE; | |
5255 | } | |
5256 | ||
5257 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
5258 | switch (r_type) |
5259 | { | |
5260 | case R_PPC_GOT_TLSLD16: | |
5261 | case R_PPC_GOT_TLSLD16_LO: | |
5262 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5263 | /* Fall through. */ |
b7fcf6f6 AM |
5264 | |
5265 | case R_PPC_GOT_TLSLD16_HI: | |
5266 | case R_PPC_GOT_TLSLD16_HA: | |
5267 | /* These relocs should never be against a symbol | |
5268 | defined in a shared lib. Leave them alone if | |
5269 | that turns out to be the case. */ | |
5270 | if (!is_local) | |
5271 | continue; | |
5272 | ||
5273 | /* LD -> LE */ | |
5274 | tls_set = 0; | |
5275 | tls_clear = TLS_LD; | |
5276 | break; | |
5277 | ||
5278 | case R_PPC_GOT_TLSGD16: | |
5279 | case R_PPC_GOT_TLSGD16_LO: | |
5280 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5281 | /* Fall through. */ |
b7fcf6f6 AM |
5282 | |
5283 | case R_PPC_GOT_TLSGD16_HI: | |
5284 | case R_PPC_GOT_TLSGD16_HA: | |
5285 | if (is_local) | |
5286 | /* GD -> LE */ | |
5287 | tls_set = 0; | |
5288 | else | |
5289 | /* GD -> IE */ | |
5290 | tls_set = TLS_TLS | TLS_TPRELGD; | |
5291 | tls_clear = TLS_GD; | |
5292 | break; | |
5293 | ||
5294 | case R_PPC_GOT_TPREL16: | |
5295 | case R_PPC_GOT_TPREL16_LO: | |
5296 | case R_PPC_GOT_TPREL16_HI: | |
5297 | case R_PPC_GOT_TPREL16_HA: | |
5298 | if (is_local) | |
5299 | { | |
5300 | /* IE -> LE */ | |
5301 | tls_set = 0; | |
5302 | tls_clear = TLS_TPREL; | |
5303 | break; | |
5304 | } | |
5305 | else | |
5306 | continue; | |
5307 | ||
32af9f6e AM |
5308 | case R_PPC_TLSGD: |
5309 | case R_PPC_TLSLD: | |
5310 | expecting_tls_get_addr = 2; | |
5311 | tls_set = 0; | |
5312 | tls_clear = 0; | |
5313 | break; | |
5314 | ||
b7fcf6f6 | 5315 | default: |
25dbc73a | 5316 | continue; |
b7fcf6f6 | 5317 | } |
25dbc73a | 5318 | |
b7fcf6f6 AM |
5319 | if (pass == 0) |
5320 | { | |
727fc41e | 5321 | if (!expecting_tls_get_addr |
32af9f6e AM |
5322 | || (expecting_tls_get_addr == 1 |
5323 | && !sec->has_tls_get_addr_call)) | |
b7fcf6f6 | 5324 | continue; |
25dbc73a | 5325 | |
3a71aa26 AM |
5326 | if (rel + 1 < relend |
5327 | && branch_reloc_hash_match (ibfd, rel + 1, | |
5328 | htab->tls_get_addr)) | |
5329 | continue; | |
25dbc73a | 5330 | |
b7fcf6f6 AM |
5331 | /* Uh oh, we didn't find the expected call. We |
5332 | could just mark this symbol to exclude it | |
5333 | from tls optimization but it's safer to skip | |
663a1470 | 5334 | the entire optimization. */ |
25f53a85 | 5335 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
5336 | "TLS optimization disabled\n"), |
5337 | ibfd, sec, rel->r_offset); | |
5338 | if (elf_section_data (sec)->relocs != relstart) | |
5339 | free (relstart); | |
5340 | return TRUE; | |
b7fcf6f6 | 5341 | } |
25dbc73a | 5342 | |
32af9f6e AM |
5343 | if (expecting_tls_get_addr) |
5344 | { | |
5345 | struct plt_entry *ent; | |
5346 | bfd_vma addend = 0; | |
5347 | ||
0e1862bb | 5348 | if (bfd_link_pic (info) |
32af9f6e AM |
5349 | && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24) |
5350 | addend = rel[1].r_addend; | |
5351 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
5352 | got2, addend); | |
5353 | if (ent != NULL && ent->plt.refcount > 0) | |
5354 | ent->plt.refcount -= 1; | |
5355 | ||
5356 | if (expecting_tls_get_addr == 2) | |
5357 | continue; | |
5358 | } | |
5359 | ||
b7fcf6f6 AM |
5360 | if (h != NULL) |
5361 | { | |
5362 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
5363 | got_count = &h->got.refcount; | |
5364 | } | |
5365 | else | |
5366 | { | |
b7fcf6f6 | 5367 | bfd_signed_vma *lgot_refs; |
e054468f | 5368 | struct plt_entry **local_plt; |
b7fcf6f6 | 5369 | char *lgot_masks; |
25dbc73a | 5370 | |
b7fcf6f6 AM |
5371 | if (locsyms == NULL) |
5372 | { | |
5373 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5374 | if (locsyms == NULL) | |
5375 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5376 | symtab_hdr->sh_info, | |
5377 | 0, NULL, NULL, NULL); | |
5378 | if (locsyms == NULL) | |
5379 | { | |
5380 | if (elf_section_data (sec)->relocs != relstart) | |
5381 | free (relstart); | |
5382 | return FALSE; | |
5383 | } | |
5384 | } | |
b7fcf6f6 AM |
5385 | lgot_refs = elf_local_got_refcounts (ibfd); |
5386 | if (lgot_refs == NULL) | |
5387 | abort (); | |
e054468f AM |
5388 | local_plt = (struct plt_entry **) |
5389 | (lgot_refs + symtab_hdr->sh_info); | |
5390 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
5391 | tls_mask = &lgot_masks[r_symndx]; |
5392 | got_count = &lgot_refs[r_symndx]; | |
5393 | } | |
25dbc73a | 5394 | |
b7fcf6f6 AM |
5395 | if (tls_set == 0) |
5396 | { | |
5397 | /* We managed to get rid of a got entry. */ | |
5398 | if (*got_count > 0) | |
5399 | *got_count -= 1; | |
5400 | } | |
25dbc73a | 5401 | |
b7fcf6f6 AM |
5402 | *tls_mask |= tls_set; |
5403 | *tls_mask &= ~tls_clear; | |
5404 | } | |
25dbc73a | 5405 | |
b7fcf6f6 AM |
5406 | if (elf_section_data (sec)->relocs != relstart) |
5407 | free (relstart); | |
5408 | } | |
5409 | ||
5410 | if (locsyms != NULL | |
5411 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
5412 | { | |
5413 | if (!info->keep_memory) | |
5414 | free (locsyms); | |
5415 | else | |
5416 | symtab_hdr->contents = (unsigned char *) locsyms; | |
5417 | } | |
5418 | } | |
9a23f96e | 5419 | htab->do_tls_opt = 1; |
25dbc73a AM |
5420 | return TRUE; |
5421 | } | |
5422 | \f | |
98bbb1b8 | 5423 | /* Find dynamic relocs for H that apply to read-only sections. */ |
625af618 | 5424 | |
98bbb1b8 AM |
5425 | static asection * |
5426 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
625af618 | 5427 | { |
6061a67d | 5428 | struct elf_dyn_relocs *p; |
625af618 AM |
5429 | |
5430 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5431 | { | |
5432 | asection *s = p->sec->output_section; | |
5433 | ||
98bbb1b8 AM |
5434 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
5435 | return p->sec; | |
625af618 | 5436 | } |
98bbb1b8 | 5437 | return NULL; |
625af618 AM |
5438 | } |
5439 | ||
287c7eaf AM |
5440 | /* Return true if we have dynamic relocs against H or any of its weak |
5441 | aliases, that apply to read-only sections. Cannot be used after | |
5442 | size_dynamic_sections. */ | |
5443 | ||
5444 | static bfd_boolean | |
5445 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5446 | { | |
5447 | struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h); | |
5448 | do | |
5449 | { | |
5450 | if (readonly_dynrelocs (&eh->elf)) | |
5451 | return TRUE; | |
5452 | eh = ppc_elf_hash_entry (eh->elf.u.alias); | |
5453 | } while (eh != NULL && &eh->elf != h); | |
5454 | ||
5455 | return FALSE; | |
5456 | } | |
5457 | ||
5458 | /* Return whether H has pc-relative dynamic relocs. */ | |
5459 | ||
5460 | static bfd_boolean | |
5461 | pc_dynrelocs (struct elf_link_hash_entry *h) | |
5462 | { | |
5463 | struct elf_dyn_relocs *p; | |
5464 | ||
5465 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5466 | if (p->pc_count != 0) | |
5467 | return TRUE; | |
5468 | return FALSE; | |
5469 | } | |
5470 | ||
25dbc73a AM |
5471 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5472 | regular object. The current definition is in some section of the | |
5473 | dynamic object, but we're not including those sections. We have to | |
5474 | change the definition to something the rest of the link can | |
5475 | understand. */ | |
7fce784e | 5476 | |
25dbc73a AM |
5477 | static bfd_boolean |
5478 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5479 | struct elf_link_hash_entry *h) | |
5480 | { | |
5481 | struct ppc_elf_link_hash_table *htab; | |
5482 | asection *s; | |
7fce784e | 5483 | |
25dbc73a AM |
5484 | #ifdef DEBUG |
5485 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
5486 | h->root.root.string); | |
5487 | #endif | |
252b5132 | 5488 | |
25dbc73a AM |
5489 | /* Make sure we know what is going on here. */ |
5490 | htab = ppc_elf_hash_table (info); | |
5491 | BFD_ASSERT (htab->elf.dynobj != NULL | |
5492 | && (h->needs_plt | |
91e21fb7 | 5493 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 5494 | || h->is_weakalias |
25dbc73a AM |
5495 | || (h->def_dynamic |
5496 | && h->ref_regular | |
5497 | && !h->def_regular))); | |
252b5132 | 5498 | |
25dbc73a AM |
5499 | /* Deal with function syms. */ |
5500 | if (h->type == STT_FUNC | |
e054468f | 5501 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5502 | || h->needs_plt) |
5503 | { | |
529fe20e AM |
5504 | bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h) |
5505 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
287c7eaf AM |
5506 | /* Discard dyn_relocs when non-pic if we've decided that a |
5507 | function symbol is local. */ | |
5508 | if (!bfd_link_pic (info) && local) | |
5509 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
529fe20e | 5510 | |
25dbc73a AM |
5511 | /* Clear procedure linkage table information for any symbol that |
5512 | won't need a .plt entry. */ | |
a6aa5195 AM |
5513 | struct plt_entry *ent; |
5514 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5515 | if (ent->plt.refcount > 0) | |
5516 | break; | |
5517 | if (ent == NULL | |
529fe20e | 5518 | || (h->type != STT_GNU_IFUNC && local)) |
252b5132 | 5519 | { |
25dbc73a | 5520 | /* A PLT entry is not required/allowed when: |
252b5132 | 5521 | |
25dbc73a AM |
5522 | 1. We are not using ld.so; because then the PLT entry |
5523 | can't be set up, so we can't use one. In this case, | |
5524 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 5525 | |
25dbc73a AM |
5526 | 2. GC has rendered the entry unused. |
5527 | ||
5528 | 3. We know for certain that a call to this symbol | |
5529 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 5530 | h->plt.plist = NULL; |
25dbc73a | 5531 | h->needs_plt = 0; |
d1eca1e4 | 5532 | h->pointer_equality_needed = 0; |
25dbc73a | 5533 | } |
625af618 AM |
5534 | else |
5535 | { | |
d1eca1e4 AM |
5536 | /* Taking a function's address in a read/write section |
5537 | doesn't require us to define the function symbol in the | |
1009ef28 | 5538 | executable on a plt call stub. A dynamic reloc can |
f0158f44 AM |
5539 | be used instead, giving better runtime performance. |
5540 | (Calls via that function pointer don't need to bounce | |
5541 | through the plt call stub.) Similarly, use a dynamic | |
5542 | reloc for a weak reference when possible, allowing the | |
5543 | resolution of the symbol to be set at load time rather | |
5544 | than link time. */ | |
5545 | if ((h->pointer_equality_needed | |
3988aed5 AM |
5546 | || (h->non_got_ref |
5547 | && !h->ref_regular_nonweak | |
5548 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
1009ef28 AM |
5549 | && !htab->is_vxworks |
5550 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
98bbb1b8 | 5551 | && !readonly_dynrelocs (h)) |
d1eca1e4 AM |
5552 | { |
5553 | h->pointer_equality_needed = 0; | |
3988aed5 AM |
5554 | /* If we haven't seen a branch reloc then we don't need |
5555 | a plt entry. */ | |
5556 | if (!h->needs_plt) | |
5557 | h->plt.plist = NULL; | |
d1eca1e4 | 5558 | } |
287c7eaf | 5559 | else if (!bfd_link_pic (info)) |
529fe20e AM |
5560 | /* We are going to be defining the function symbol on the |
5561 | plt stub, so no dyn_relocs needed when non-pic. */ | |
287c7eaf | 5562 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
625af618 | 5563 | } |
d3e454b9 | 5564 | h->protected_def = 0; |
3988aed5 | 5565 | /* Function symbols can't have copy relocs. */ |
25dbc73a | 5566 | return TRUE; |
252b5132 | 5567 | } |
25dbc73a | 5568 | else |
a6aa5195 | 5569 | h->plt.plist = NULL; |
252b5132 | 5570 | |
25dbc73a AM |
5571 | /* If this is a weak symbol, and there is a real definition, the |
5572 | processor independent code will have arranged for us to see the | |
5573 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 5574 | if (h->is_weakalias) |
252b5132 | 5575 | { |
60d67dc8 AM |
5576 | struct elf_link_hash_entry *def = weakdef (h); |
5577 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
5578 | h->root.u.def.section = def->root.u.def.section; | |
5579 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
5580 | if (def->root.u.def.section == htab->elf.sdynbss |
5581 | || def->root.u.def.section == htab->elf.sdynrelro | |
5582 | || def->root.u.def.section == htab->dynsbss) | |
5583 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
25dbc73a AM |
5584 | return TRUE; |
5585 | } | |
dc810e39 | 5586 | |
25dbc73a AM |
5587 | /* This is a reference to a symbol defined by a dynamic object which |
5588 | is not a function. */ | |
252b5132 | 5589 | |
25dbc73a AM |
5590 | /* If we are creating a shared library, we must presume that the |
5591 | only references to the symbol are via the global offset table. | |
5592 | For such cases we need not do anything here; the relocations will | |
5593 | be handled correctly by relocate_section. */ | |
0e1862bb | 5594 | if (bfd_link_pic (info)) |
d3e454b9 AM |
5595 | { |
5596 | h->protected_def = 0; | |
5597 | return TRUE; | |
5598 | } | |
252b5132 | 5599 | |
25dbc73a AM |
5600 | /* If there are no references to this symbol that do not use the |
5601 | GOT, we don't need to generate a copy reloc. */ | |
5602 | if (!h->non_got_ref) | |
d3e454b9 AM |
5603 | { |
5604 | h->protected_def = 0; | |
5605 | return TRUE; | |
5606 | } | |
5607 | ||
5608 | /* Protected variables do not work with .dynbss. The copy in | |
5609 | .dynbss won't be used by the shared library with the protected | |
5610 | definition for the variable. Editing to PIC, or text relocations | |
5611 | are preferable to an incorrect program. */ | |
5612 | if (h->protected_def) | |
5613 | { | |
5614 | if (ELIMINATE_COPY_RELOCS | |
5615 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
5616 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
5617 | && htab->params->pic_fixup == 0 | |
5618 | && info->disable_target_specific_optimizations <= 1) | |
5619 | htab->params->pic_fixup = 1; | |
d3e454b9 AM |
5620 | return TRUE; |
5621 | } | |
25dbc73a | 5622 | |
a127494f AM |
5623 | /* If -z nocopyreloc was given, we won't generate them either. */ |
5624 | if (info->nocopyreloc) | |
529fe20e | 5625 | return TRUE; |
a127494f | 5626 | |
dce2246a | 5627 | /* If we don't find any dynamic relocs in read-only sections, then |
cfd2c773 NS |
5628 | we'll be keeping the dynamic relocs and avoiding the copy reloc. |
5629 | We can't do this if there are any small data relocations. This | |
5630 | doesn't work on VxWorks, where we can not have dynamic | |
5631 | relocations (other than copy and jump slot relocations) in an | |
5632 | executable. */ | |
4dc4a9a5 | 5633 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 5634 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
5635 | && !htab->is_vxworks |
5636 | && !h->def_regular | |
287c7eaf | 5637 | && !alias_readonly_dynrelocs (h)) |
529fe20e | 5638 | return TRUE; |
252b5132 | 5639 | |
25dbc73a AM |
5640 | /* We must allocate the symbol in our .dynbss section, which will |
5641 | become part of the .bss section of the executable. There will be | |
5642 | an entry for this symbol in the .dynsym section. The dynamic | |
5643 | object will contain position independent code, so all references | |
5644 | from the dynamic object to this symbol will go through the global | |
5645 | offset table. The dynamic linker will use the .dynsym entry to | |
5646 | determine the address it must put in the global offset table, so | |
5647 | both the dynamic object and the regular object will refer to the | |
5648 | same memory location for the variable. | |
5649 | ||
4dc4a9a5 DJ |
5650 | Of course, if the symbol is referenced using SDAREL relocs, we |
5651 | must instead allocate it in .sbss. */ | |
4dc4a9a5 | 5652 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 5653 | s = htab->dynsbss; |
5474d94f AM |
5654 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
5655 | s = htab->elf.sdynrelro; | |
25dbc73a | 5656 | else |
9d19e4fd | 5657 | s = htab->elf.sdynbss; |
25dbc73a AM |
5658 | BFD_ASSERT (s != NULL); |
5659 | ||
1d7e9d18 | 5660 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
5661 | { |
5662 | asection *srel; | |
5663 | ||
4a7e5234 AM |
5664 | /* We must generate a R_PPC_COPY reloc to tell the dynamic |
5665 | linker to copy the initial value out of the dynamic object | |
5666 | and into the runtime process image. */ | |
4dc4a9a5 | 5667 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 5668 | srel = htab->relsbss; |
5474d94f AM |
5669 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
5670 | srel = htab->elf.sreldynrelro; | |
25dbc73a | 5671 | else |
9d19e4fd | 5672 | srel = htab->elf.srelbss; |
25dbc73a AM |
5673 | BFD_ASSERT (srel != NULL); |
5674 | srel->size += sizeof (Elf32_External_Rela); | |
5675 | h->needs_copy = 1; | |
5676 | } | |
7619e7c7 | 5677 | |
529fe20e | 5678 | /* We no longer want dyn_relocs. */ |
287c7eaf | 5679 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
6cabe1ea | 5680 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
5681 | } |
5682 | \f | |
ac39eb42 AM |
5683 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
5684 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
5685 | specifying the addend on the plt relocation. For -fpic code, the sym | |
5686 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
5687 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
5688 | |
5689 | static bfd_boolean | |
5690 | add_stub_sym (struct plt_entry *ent, | |
5691 | struct elf_link_hash_entry *h, | |
ac39eb42 | 5692 | struct bfd_link_info *info) |
0ba07910 AM |
5693 | { |
5694 | struct elf_link_hash_entry *sh; | |
5695 | size_t len1, len2, len3; | |
5696 | char *name; | |
ac39eb42 AM |
5697 | const char *stub; |
5698 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
5699 | ||
0e1862bb | 5700 | if (bfd_link_pic (info)) |
ac39eb42 AM |
5701 | stub = ".plt_pic32."; |
5702 | else | |
5703 | stub = ".plt_call32."; | |
0ba07910 AM |
5704 | |
5705 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 5706 | len2 = strlen (stub); |
0ba07910 AM |
5707 | len3 = 0; |
5708 | if (ent->sec) | |
5709 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 5710 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
5711 | if (name == NULL) |
5712 | return FALSE; | |
5713 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
5714 | if (ent->sec) | |
5715 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
5716 | memcpy (name + 8 + len3, stub, len2); |
5717 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
5718 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
5719 | if (sh == NULL) | |
5720 | return FALSE; | |
5721 | if (sh->root.type == bfd_link_hash_new) | |
5722 | { | |
5723 | sh->root.type = bfd_link_hash_defined; | |
5724 | sh->root.u.def.section = htab->glink; | |
5725 | sh->root.u.def.value = ent->glink_offset; | |
5726 | sh->ref_regular = 1; | |
5727 | sh->def_regular = 1; | |
5728 | sh->ref_regular_nonweak = 1; | |
5729 | sh->forced_local = 1; | |
5730 | sh->non_elf = 0; | |
2ec55de3 | 5731 | sh->root.linker_def = 1; |
0ba07910 AM |
5732 | } |
5733 | return TRUE; | |
5734 | } | |
5735 | ||
3b36f7e6 AM |
5736 | /* Allocate NEED contiguous space in .got, and return the offset. |
5737 | Handles allocation of the got header when crossing 32k. */ | |
5738 | ||
5739 | static bfd_vma | |
5740 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5741 | { | |
5742 | bfd_vma where; | |
4a3dc543 | 5743 | unsigned int max_before_header; |
3b36f7e6 | 5744 | |
4a3dc543 | 5745 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 | 5746 | { |
ce558b89 AM |
5747 | where = htab->elf.sgot->size; |
5748 | htab->elf.sgot->size += need; | |
9d8504b1 | 5749 | } |
3b36f7e6 AM |
5750 | else |
5751 | { | |
4a3dc543 RS |
5752 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5753 | if (need <= htab->got_gap) | |
3b36f7e6 | 5754 | { |
4a3dc543 RS |
5755 | where = max_before_header - htab->got_gap; |
5756 | htab->got_gap -= need; | |
5757 | } | |
5758 | else | |
5759 | { | |
ce558b89 AM |
5760 | if (htab->elf.sgot->size + need > max_before_header |
5761 | && htab->elf.sgot->size <= max_before_header) | |
4a3dc543 | 5762 | { |
ce558b89 AM |
5763 | htab->got_gap = max_before_header - htab->elf.sgot->size; |
5764 | htab->elf.sgot->size = max_before_header + htab->got_header_size; | |
4a3dc543 | 5765 | } |
ce558b89 AM |
5766 | where = htab->elf.sgot->size; |
5767 | htab->elf.sgot->size += need; | |
3b36f7e6 | 5768 | } |
3b36f7e6 AM |
5769 | } |
5770 | return where; | |
5771 | } | |
5772 | ||
f15d0b54 AM |
5773 | /* Calculate size of GOT entries for symbol given its TLS_MASK. |
5774 | TLS_LD is excluded because those go in a special GOT slot. */ | |
5775 | ||
5776 | static inline unsigned int | |
5777 | got_entries_needed (int tls_mask) | |
5778 | { | |
5779 | unsigned int need; | |
5780 | if ((tls_mask & TLS_TLS) == 0) | |
5781 | need = 4; | |
5782 | else | |
5783 | { | |
5784 | need = 0; | |
5785 | if ((tls_mask & TLS_GD) != 0) | |
5786 | need += 8; | |
5787 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5788 | need += 4; | |
5789 | if ((tls_mask & TLS_DTPREL) != 0) | |
5790 | need += 4; | |
5791 | } | |
5792 | return need; | |
5793 | } | |
5794 | ||
5795 | /* Calculate size of relocs needed for symbol given its TLS_MASK and | |
5796 | NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at | |
5797 | link time. */ | |
5798 | ||
5799 | static inline unsigned int | |
5800 | got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known) | |
5801 | { | |
5802 | /* All the entries we allocated need relocs. | |
5803 | Except IE in executable with a local symbol. We could also omit | |
5804 | the DTPREL reloc on the second word of a GD entry under the same | |
5805 | condition as that for IE, but ld.so needs to differentiate | |
5806 | LD and GD entries. */ | |
5807 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known) | |
5808 | need -= 4; | |
5809 | return need * sizeof (Elf32_External_Rela) / 4; | |
5810 | } | |
5811 | ||
46434633 | 5812 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
5813 | |
5814 | static bfd_boolean | |
46434633 AM |
5815 | ensure_undef_dynamic (struct bfd_link_info *info, |
5816 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
5817 | { |
5818 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5819 | ||
5820 | if (htab->dynamic_sections_created | |
46434633 AM |
5821 | && ((info->dynamic_undefined_weak != 0 |
5822 | && h->root.type == bfd_link_hash_undefweak) | |
5823 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
5824 | && h->dynindx == -1 |
5825 | && !h->forced_local | |
5826 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5827 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
5828 | return TRUE; | |
5829 | } | |
5830 | ||
25dbc73a | 5831 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5832 | |
b34976b6 | 5833 | static bfd_boolean |
25dbc73a | 5834 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5835 | { |
25dbc73a AM |
5836 | struct bfd_link_info *info = inf; |
5837 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5838 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5839 | struct elf_dyn_relocs *p; |
f0158f44 | 5840 | bfd_boolean dyn; |
252b5132 | 5841 | |
25dbc73a | 5842 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5843 | return TRUE; |
252b5132 | 5844 | |
7619e7c7 | 5845 | htab = ppc_elf_hash_table (info); |
25dbc73a | 5846 | eh = (struct ppc_elf_link_hash_entry *) h; |
d3e454b9 AM |
5847 | if (eh->elf.got.refcount > 0 |
5848 | || (ELIMINATE_COPY_RELOCS | |
5849 | && !eh->elf.def_regular | |
5850 | && eh->elf.protected_def | |
5851 | && eh->has_addr16_ha | |
5852 | && eh->has_addr16_lo | |
5853 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5854 | { |
d6e14abc AM |
5855 | unsigned int need; |
5856 | ||
46434633 AM |
5857 | /* Make sure this symbol is output as a dynamic symbol. */ |
5858 | if (!ensure_undef_dynamic (info, &eh->elf)) | |
f0158f44 | 5859 | return FALSE; |
252b5132 | 5860 | |
d6e14abc | 5861 | need = 0; |
f15d0b54 | 5862 | if ((eh->tls_mask & TLS_LD) != 0) |
25dbc73a | 5863 | { |
f15d0b54 AM |
5864 | if (!eh->elf.def_dynamic) |
5865 | /* We'll just use htab->tlsld_got.offset. This should | |
5866 | always be the case. It's a little odd if we have | |
5867 | a local dynamic reloc against a non-local symbol. */ | |
5868 | htab->tlsld_got.refcount += 1; | |
5869 | else | |
d6e14abc | 5870 | need += 8; |
d6e14abc | 5871 | } |
f15d0b54 | 5872 | need += got_entries_needed (eh->tls_mask); |
d6e14abc AM |
5873 | if (need == 0) |
5874 | eh->elf.got.offset = (bfd_vma) -1; | |
5875 | else | |
5876 | { | |
3b36f7e6 | 5877 | eh->elf.got.offset = allocate_got (htab, need); |
0e1862bb | 5878 | if ((bfd_link_pic (info) |
f0158f44 AM |
5879 | || (htab->elf.dynamic_sections_created |
5880 | && eh->elf.dynindx != -1 | |
5881 | && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
21d68fcd | 5882 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf)) |
252b5132 | 5883 | { |
f15d0b54 AM |
5884 | asection *rsec; |
5885 | bfd_boolean tprel_known = (bfd_link_executable (info) | |
5886 | && SYMBOL_REFERENCES_LOCAL (info, | |
5887 | &eh->elf)); | |
5888 | ||
5889 | need = got_relocs_needed (eh->tls_mask, need, tprel_known); | |
5890 | if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic) | |
5891 | need -= sizeof (Elf32_External_Rela); | |
5892 | rsec = htab->elf.srelgot; | |
0bed072f | 5893 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5894 | rsec = htab->elf.irelplt; |
f15d0b54 | 5895 | rsec->size += need; |
252b5132 | 5896 | } |
25dbc73a AM |
5897 | } |
5898 | } | |
5899 | else | |
5900 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5901 | |
954b63d4 AM |
5902 | /* If no dynamic sections we can't have dynamic relocs, except for |
5903 | IFUNCs which are handled even in static executables. */ | |
f0158f44 AM |
5904 | if (!htab->elf.dynamic_sections_created |
5905 | && h->type != STT_GNU_IFUNC) | |
5906 | eh->dyn_relocs = NULL; | |
5907 | ||
529fe20e AM |
5908 | /* Discard relocs on undefined symbols that must be local. */ |
5909 | else if (h->root.type == bfd_link_hash_undefined | |
5910 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
5911 | eh->dyn_relocs = NULL; | |
5912 | ||
5913 | /* Also discard relocs on undefined weak syms with non-default | |
5914 | visibility, or when dynamic_undefined_weak says so. */ | |
5915 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
5916 | eh->dyn_relocs = NULL; | |
5917 | ||
f0158f44 | 5918 | if (eh->dyn_relocs == NULL) |
287c7eaf | 5919 | ; |
252b5132 | 5920 | |
25dbc73a AM |
5921 | /* In the shared -Bsymbolic case, discard space allocated for |
5922 | dynamic pc-relative relocs against symbols which turn out to be | |
5923 | defined in regular objects. For the normal shared case, discard | |
5924 | space for relocs that have become local due to symbol visibility | |
5925 | changes. */ | |
f0158f44 | 5926 | else if (bfd_link_pic (info)) |
25dbc73a AM |
5927 | { |
5928 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 5929 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
5930 | generated via assembly. We want calls to protected symbols to |
5931 | resolve directly to the function rather than going via the plt. | |
5932 | If people want function pointer comparisons to work as expected | |
5933 | then they should avoid writing weird assembly. */ | |
529fe20e | 5934 | if (SYMBOL_CALLS_LOCAL (info, h)) |
25dbc73a | 5935 | { |
6061a67d | 5936 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
5937 | |
5938 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 5939 | { |
25dbc73a AM |
5940 | p->count -= p->pc_count; |
5941 | p->pc_count = 0; | |
5942 | if (p->count == 0) | |
5943 | *pp = p->next; | |
5944 | else | |
5945 | pp = &p->next; | |
252b5132 | 5946 | } |
25dbc73a | 5947 | } |
252b5132 | 5948 | |
3348747a NS |
5949 | if (htab->is_vxworks) |
5950 | { | |
6061a67d | 5951 | struct elf_dyn_relocs **pp; |
3348747a NS |
5952 | |
5953 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5954 | { | |
5955 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
5956 | *pp = p->next; | |
5957 | else | |
5958 | pp = &p->next; | |
5959 | } | |
5960 | } | |
5961 | ||
954b63d4 | 5962 | if (eh->dyn_relocs != NULL) |
25dbc73a | 5963 | { |
46434633 AM |
5964 | /* Make sure this symbol is output as a dynamic symbol. */ |
5965 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5966 | return FALSE; |
25dbc73a AM |
5967 | } |
5968 | } | |
5969 | else if (ELIMINATE_COPY_RELOCS) | |
5970 | { | |
f0158f44 | 5971 | /* For the non-pic case, discard space for relocs against |
25dbc73a AM |
5972 | symbols which turn out to need copy relocs or are not |
5973 | dynamic. */ | |
529fe20e | 5974 | if (h->dynamic_adjusted |
d3e454b9 | 5975 | && !h->def_regular |
529fe20e | 5976 | && !ELF_COMMON_DEF_P (h) |
d3e454b9 AM |
5977 | && !(h->protected_def |
5978 | && eh->has_addr16_ha | |
5979 | && eh->has_addr16_lo | |
5980 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5981 | { |
46434633 AM |
5982 | /* Make sure this symbol is output as a dynamic symbol. */ |
5983 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5984 | return FALSE; |
7619e7c7 | 5985 | |
f0158f44 | 5986 | if (h->dynindx == -1) |
287c7eaf | 5987 | eh->dyn_relocs = NULL; |
25dbc73a | 5988 | } |
f0158f44 | 5989 | else |
287c7eaf | 5990 | eh->dyn_relocs = NULL; |
25dbc73a | 5991 | } |
252b5132 | 5992 | |
f0158f44 | 5993 | /* Allocate space. */ |
25dbc73a AM |
5994 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5995 | { | |
5996 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 5997 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5998 | sreloc = htab->elf.irelplt; |
25dbc73a AM |
5999 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
6000 | } | |
252b5132 | 6001 | |
f0158f44 AM |
6002 | /* Handle PLT relocs. Done last, after dynindx has settled. */ |
6003 | dyn = htab->elf.dynamic_sections_created && h->dynindx != -1; | |
6004 | if (dyn || h->type == STT_GNU_IFUNC) | |
6005 | { | |
6006 | struct plt_entry *ent; | |
6007 | bfd_boolean doneone = FALSE; | |
6008 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6009 | ||
6010 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6011 | if (ent->plt.refcount > 0) | |
6012 | { | |
6013 | asection *s = htab->elf.splt; | |
6014 | ||
6015 | if (!dyn) | |
6016 | s = htab->elf.iplt; | |
6017 | ||
6018 | if (htab->plt_type == PLT_NEW || !dyn) | |
6019 | { | |
6020 | if (!doneone) | |
6021 | { | |
6022 | plt_offset = s->size; | |
6023 | s->size += 4; | |
6024 | } | |
6025 | ent->plt.offset = plt_offset; | |
6026 | ||
6027 | s = htab->glink; | |
6028 | if (!doneone || bfd_link_pic (info)) | |
6029 | { | |
6030 | glink_offset = s->size; | |
9e390558 | 6031 | s->size += GLINK_ENTRY_SIZE (htab, h); |
f0158f44 AM |
6032 | } |
6033 | if (!doneone | |
6034 | && !bfd_link_pic (info) | |
6035 | && h->def_dynamic | |
6036 | && !h->def_regular) | |
6037 | { | |
6038 | h->root.u.def.section = s; | |
6039 | h->root.u.def.value = glink_offset; | |
6040 | } | |
6041 | ent->glink_offset = glink_offset; | |
6042 | ||
6043 | if (htab->params->emit_stub_syms | |
6044 | && !add_stub_sym (ent, h, info)) | |
6045 | return FALSE; | |
6046 | } | |
6047 | else | |
6048 | { | |
6049 | if (!doneone) | |
6050 | { | |
6051 | /* If this is the first .plt entry, make room | |
6052 | for the special first entry. */ | |
6053 | if (s->size == 0) | |
6054 | s->size += htab->plt_initial_entry_size; | |
6055 | ||
6056 | /* The PowerPC PLT is actually composed of two | |
6057 | parts, the first part is 2 words (for a load | |
6058 | and a jump), and then there is a remaining | |
6059 | word available at the end. */ | |
6060 | plt_offset = (htab->plt_initial_entry_size | |
6061 | + (htab->plt_slot_size | |
6062 | * ((s->size | |
6063 | - htab->plt_initial_entry_size) | |
6064 | / htab->plt_entry_size))); | |
6065 | ||
6066 | /* If this symbol is not defined in a regular | |
6067 | file, and we are not generating a shared | |
6068 | library, then set the symbol to this location | |
6069 | in the .plt. This is to avoid text | |
6070 | relocations, and is required to make | |
6071 | function pointers compare as equal between | |
6072 | the normal executable and the shared library. */ | |
6073 | if (! bfd_link_pic (info) | |
6074 | && h->def_dynamic | |
6075 | && !h->def_regular) | |
6076 | { | |
6077 | h->root.u.def.section = s; | |
6078 | h->root.u.def.value = plt_offset; | |
6079 | } | |
6080 | ||
6081 | /* Make room for this entry. */ | |
6082 | s->size += htab->plt_entry_size; | |
6083 | /* After the 8192nd entry, room for two entries | |
6084 | is allocated. */ | |
6085 | if (htab->plt_type == PLT_OLD | |
6086 | && (s->size - htab->plt_initial_entry_size) | |
6087 | / htab->plt_entry_size | |
6088 | > PLT_NUM_SINGLE_ENTRIES) | |
6089 | s->size += htab->plt_entry_size; | |
6090 | } | |
6091 | ent->plt.offset = plt_offset; | |
6092 | } | |
6093 | ||
6094 | /* We also need to make an entry in the .rela.plt section. */ | |
6095 | if (!doneone) | |
6096 | { | |
6097 | if (!dyn) | |
6098 | htab->elf.irelplt->size += sizeof (Elf32_External_Rela); | |
6099 | else | |
6100 | { | |
6101 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
6102 | ||
6103 | if (htab->plt_type == PLT_VXWORKS) | |
6104 | { | |
6105 | /* Allocate space for the unloaded relocations. */ | |
6106 | if (!bfd_link_pic (info) | |
6107 | && htab->elf.dynamic_sections_created) | |
6108 | { | |
6109 | if (ent->plt.offset | |
6110 | == (bfd_vma) htab->plt_initial_entry_size) | |
6111 | { | |
6112 | htab->srelplt2->size | |
6113 | += (sizeof (Elf32_External_Rela) | |
6114 | * VXWORKS_PLTRESOLVE_RELOCS); | |
6115 | } | |
6116 | ||
6117 | htab->srelplt2->size | |
6118 | += (sizeof (Elf32_External_Rela) | |
6119 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
6120 | } | |
6121 | ||
6122 | /* Every PLT entry has an associated GOT entry in | |
6123 | .got.plt. */ | |
6124 | htab->elf.sgotplt->size += 4; | |
6125 | } | |
6126 | } | |
6127 | doneone = TRUE; | |
6128 | } | |
6129 | } | |
6130 | else | |
6131 | ent->plt.offset = (bfd_vma) -1; | |
6132 | ||
6133 | if (!doneone) | |
6134 | { | |
6135 | h->plt.plist = NULL; | |
6136 | h->needs_plt = 0; | |
6137 | } | |
6138 | } | |
6139 | else | |
6140 | { | |
6141 | h->plt.plist = NULL; | |
6142 | h->needs_plt = 0; | |
6143 | } | |
6144 | ||
25dbc73a AM |
6145 | return TRUE; |
6146 | } | |
7619e7c7 | 6147 | |
625af618 AM |
6148 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
6149 | read-only sections. */ | |
7619e7c7 | 6150 | |
25dbc73a | 6151 | static bfd_boolean |
0caf6c82 | 6152 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
25dbc73a | 6153 | { |
98bbb1b8 | 6154 | asection *sec; |
0caf6c82 | 6155 | |
25dbc73a AM |
6156 | if (h->root.type == bfd_link_hash_indirect) |
6157 | return TRUE; | |
252b5132 | 6158 | |
98bbb1b8 AM |
6159 | sec = readonly_dynrelocs (h); |
6160 | if (sec != NULL) | |
25dbc73a | 6161 | { |
98bbb1b8 AM |
6162 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
6163 | ||
0caf6c82 | 6164 | info->flags |= DF_TEXTREL; |
98bbb1b8 | 6165 | info->callbacks->minfo |
c1c8c1ef | 6166 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 6167 | sec->owner, h->root.root.string, sec); |
ee05f2fe | 6168 | |
625af618 AM |
6169 | /* Not an error, just cut short the traversal. */ |
6170 | return FALSE; | |
25dbc73a AM |
6171 | } |
6172 | return TRUE; | |
6173 | } | |
6174 | ||
6177242a AM |
6175 | static const unsigned char glink_eh_frame_cie[] = |
6176 | { | |
6177 | 0, 0, 0, 16, /* length. */ | |
6178 | 0, 0, 0, 0, /* id. */ | |
6179 | 1, /* CIE version. */ | |
6180 | 'z', 'R', 0, /* Augmentation string. */ | |
6181 | 4, /* Code alignment. */ | |
6182 | 0x7c, /* Data alignment. */ | |
6183 | 65, /* RA reg. */ | |
6184 | 1, /* Augmentation size. */ | |
6185 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
6186 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
6187 | }; | |
6188 | ||
25dbc73a AM |
6189 | /* Set the sizes of the dynamic sections. */ |
6190 | ||
6191 | static bfd_boolean | |
93d1b056 | 6192 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
6193 | struct bfd_link_info *info) |
6194 | { | |
6195 | struct ppc_elf_link_hash_table *htab; | |
6196 | asection *s; | |
6197 | bfd_boolean relocs; | |
6198 | bfd *ibfd; | |
7fce784e | 6199 | |
252b5132 | 6200 | #ifdef DEBUG |
25dbc73a | 6201 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 6202 | #endif |
252b5132 | 6203 | |
25dbc73a AM |
6204 | htab = ppc_elf_hash_table (info); |
6205 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 6206 | |
25dbc73a AM |
6207 | if (elf_hash_table (info)->dynamic_sections_created) |
6208 | { | |
6209 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 6210 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 6211 | { |
3d4d4302 | 6212 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
6213 | BFD_ASSERT (s != NULL); |
6214 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6215 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6216 | } | |
6217 | } | |
252b5132 | 6218 | |
4a3dc543 | 6219 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 6220 | htab->got_header_size = 16; |
4a3dc543 | 6221 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 6222 | htab->got_header_size = 12; |
252b5132 | 6223 | |
25dbc73a AM |
6224 | /* Set up .got offsets for local syms, and space for local dynamic |
6225 | relocs. */ | |
c72f2fb2 | 6226 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
6227 | { |
6228 | bfd_signed_vma *local_got; | |
6229 | bfd_signed_vma *end_local_got; | |
e054468f AM |
6230 | struct plt_entry **local_plt; |
6231 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
6232 | char *lgot_masks; |
6233 | bfd_size_type locsymcount; | |
6234 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 6235 | |
0c8d6e5c | 6236 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 6237 | continue; |
7fce784e | 6238 | |
25dbc73a AM |
6239 | for (s = ibfd->sections; s != NULL; s = s->next) |
6240 | { | |
f95f8542 | 6241 | struct ppc_dyn_relocs *p; |
252b5132 | 6242 | |
f95f8542 | 6243 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
6244 | elf_section_data (s)->local_dynrel); |
6245 | p != NULL; | |
6246 | p = p->next) | |
6247 | { | |
6248 | if (!bfd_is_abs_section (p->sec) | |
6249 | && bfd_is_abs_section (p->sec->output_section)) | |
6250 | { | |
6251 | /* Input section has been discarded, either because | |
6252 | it is a copy of a linkonce section or due to | |
6253 | linker script /DISCARD/, so we'll be discarding | |
6254 | the relocs too. */ | |
7fce784e | 6255 | } |
3348747a NS |
6256 | else if (htab->is_vxworks |
6257 | && strcmp (p->sec->output_section->name, | |
6258 | ".tls_vars") == 0) | |
6259 | { | |
6260 | /* Relocations in vxworks .tls_vars sections are | |
6261 | handled specially by the loader. */ | |
6262 | } | |
25dbc73a | 6263 | else if (p->count != 0) |
7fce784e | 6264 | { |
25f23106 | 6265 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 6266 | if (p->ifunc) |
ce558b89 | 6267 | sreloc = htab->elf.irelplt; |
25f23106 | 6268 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
25dbc73a AM |
6269 | if ((p->sec->output_section->flags |
6270 | & (SEC_READONLY | SEC_ALLOC)) | |
6271 | == (SEC_READONLY | SEC_ALLOC)) | |
0caf6c82 L |
6272 | { |
6273 | info->flags |= DF_TEXTREL; | |
871b3ab2 | 6274 | info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), |
0caf6c82 L |
6275 | p->sec->owner, p->sec); |
6276 | } | |
7fce784e | 6277 | } |
252b5132 | 6278 | } |
252b5132 | 6279 | } |
252b5132 | 6280 | |
25dbc73a AM |
6281 | local_got = elf_local_got_refcounts (ibfd); |
6282 | if (!local_got) | |
6283 | continue; | |
252b5132 | 6284 | |
0ffa91dd | 6285 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
6286 | locsymcount = symtab_hdr->sh_info; |
6287 | end_local_got = local_got + locsymcount; | |
e054468f AM |
6288 | local_plt = (struct plt_entry **) end_local_got; |
6289 | end_local_plt = local_plt + locsymcount; | |
6290 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 6291 | |
25dbc73a AM |
6292 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
6293 | if (*local_got > 0) | |
6294 | { | |
f15d0b54 AM |
6295 | unsigned int need; |
6296 | if ((*lgot_masks & TLS_LD) != 0) | |
6297 | htab->tlsld_got.refcount += 1; | |
6298 | need = got_entries_needed (*lgot_masks); | |
d6e14abc AM |
6299 | if (need == 0) |
6300 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
6301 | else |
6302 | { | |
3b36f7e6 | 6303 | *local_got = allocate_got (htab, need); |
0e1862bb | 6304 | if (bfd_link_pic (info)) |
0bed072f | 6305 | { |
f15d0b54 AM |
6306 | asection *srel; |
6307 | bfd_boolean tprel_known = bfd_link_executable (info); | |
6308 | ||
6309 | need = got_relocs_needed (*lgot_masks, need, tprel_known); | |
6310 | srel = htab->elf.srelgot; | |
0bed072f | 6311 | if ((*lgot_masks & PLT_IFUNC) != 0) |
ce558b89 | 6312 | srel = htab->elf.irelplt; |
f15d0b54 | 6313 | srel->size += need; |
0bed072f | 6314 | } |
25dbc73a AM |
6315 | } |
6316 | } | |
6317 | else | |
6318 | *local_got = (bfd_vma) -1; | |
e054468f AM |
6319 | |
6320 | if (htab->is_vxworks) | |
6321 | continue; | |
6322 | ||
6323 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
6324 | for (; local_plt < end_local_plt; ++local_plt) | |
6325 | { | |
6326 | struct plt_entry *ent; | |
6327 | bfd_boolean doneone = FALSE; | |
6328 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6329 | ||
6330 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
6331 | if (ent->plt.refcount > 0) | |
6332 | { | |
ce558b89 | 6333 | s = htab->elf.iplt; |
e054468f AM |
6334 | |
6335 | if (!doneone) | |
6336 | { | |
6337 | plt_offset = s->size; | |
6338 | s->size += 4; | |
6339 | } | |
6340 | ent->plt.offset = plt_offset; | |
6341 | ||
6342 | s = htab->glink; | |
0e1862bb | 6343 | if (!doneone || bfd_link_pic (info)) |
e054468f AM |
6344 | { |
6345 | glink_offset = s->size; | |
9e390558 | 6346 | s->size += GLINK_ENTRY_SIZE (htab, NULL); |
e054468f AM |
6347 | } |
6348 | ent->glink_offset = glink_offset; | |
6349 | ||
6350 | if (!doneone) | |
6351 | { | |
ce558b89 | 6352 | htab->elf.irelplt->size += sizeof (Elf32_External_Rela); |
e054468f AM |
6353 | doneone = TRUE; |
6354 | } | |
6355 | } | |
6356 | else | |
6357 | ent->plt.offset = (bfd_vma) -1; | |
6358 | } | |
25dbc73a | 6359 | } |
252b5132 | 6360 | |
b7fcf6f6 AM |
6361 | /* Allocate space for global sym dynamic relocs. */ |
6362 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
6363 | ||
3b36f7e6 AM |
6364 | if (htab->tlsld_got.refcount > 0) |
6365 | { | |
6366 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
0e1862bb | 6367 | if (bfd_link_pic (info)) |
ce558b89 | 6368 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3b36f7e6 AM |
6369 | } |
6370 | else | |
6371 | htab->tlsld_got.offset = (bfd_vma) -1; | |
6372 | ||
ce558b89 | 6373 | if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
6374 | { |
6375 | unsigned int g_o_t = 32768; | |
6376 | ||
4d962050 AM |
6377 | /* If we haven't allocated the header, do so now. When we get here, |
6378 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
6379 | or 32780 to 65536 (header allocated). For new plt/got, the | |
6380 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
ce558b89 | 6381 | if (htab->elf.sgot->size <= 32768) |
3b36f7e6 | 6382 | { |
ce558b89 | 6383 | g_o_t = htab->elf.sgot->size; |
4a3dc543 | 6384 | if (htab->plt_type == PLT_OLD) |
4d962050 | 6385 | g_o_t += 4; |
ce558b89 | 6386 | htab->elf.sgot->size += htab->got_header_size; |
3b36f7e6 | 6387 | } |
3b36f7e6 AM |
6388 | |
6389 | htab->elf.hgot->root.u.def.value = g_o_t; | |
6390 | } | |
0e1862bb | 6391 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
6392 | { |
6393 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
6394 | |
6395 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
6396 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 6397 | } |
15bfcc77 AM |
6398 | if (info->emitrelocations) |
6399 | { | |
6400 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
6401 | ||
6402 | if (sda != NULL && sda->ref_regular) | |
6403 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6404 | sda = htab->sdata[1].sym; | |
6405 | if (sda != NULL && sda->ref_regular) | |
6406 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6407 | } | |
3b36f7e6 | 6408 | |
e054468f AM |
6409 | if (htab->glink != NULL |
6410 | && htab->glink->size != 0 | |
6411 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
6412 | { |
6413 | htab->glink_pltresolve = htab->glink->size; | |
9e390558 AM |
6414 | /* Space for the branch table. */ |
6415 | htab->glink->size | |
6416 | += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4; | |
86b9da88 | 6417 | /* Pad out to align the start of PLTresolve. */ |
5446cbdf AM |
6418 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
6419 | ? 63 : 15); | |
d7128ce4 | 6420 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 6421 | |
5446cbdf | 6422 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
6423 | { |
6424 | struct elf_link_hash_entry *sh; | |
6425 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
6426 | TRUE, FALSE, FALSE); | |
6427 | if (sh == NULL) | |
6428 | return FALSE; | |
6429 | if (sh->root.type == bfd_link_hash_new) | |
6430 | { | |
6431 | sh->root.type = bfd_link_hash_defined; | |
6432 | sh->root.u.def.section = htab->glink; | |
6433 | sh->root.u.def.value = htab->glink_pltresolve; | |
6434 | sh->ref_regular = 1; | |
6435 | sh->def_regular = 1; | |
6436 | sh->ref_regular_nonweak = 1; | |
6437 | sh->forced_local = 1; | |
6438 | sh->non_elf = 0; | |
2ec55de3 | 6439 | sh->root.linker_def = 1; |
0ba07910 AM |
6440 | } |
6441 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
6442 | TRUE, FALSE, FALSE); | |
6443 | if (sh == NULL) | |
6444 | return FALSE; | |
6445 | if (sh->root.type == bfd_link_hash_new) | |
6446 | { | |
6447 | sh->root.type = bfd_link_hash_defined; | |
6448 | sh->root.u.def.section = htab->glink; | |
6449 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
6450 | sh->ref_regular = 1; | |
6451 | sh->def_regular = 1; | |
6452 | sh->ref_regular_nonweak = 1; | |
6453 | sh->forced_local = 1; | |
6454 | sh->non_elf = 0; | |
2ec55de3 | 6455 | sh->root.linker_def = 1; |
0ba07910 AM |
6456 | } |
6457 | } | |
d7128ce4 AM |
6458 | } |
6459 | ||
6177242a AM |
6460 | if (htab->glink != NULL |
6461 | && htab->glink->size != 0 | |
6462 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
6463 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
6464 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
6465 | { |
6466 | s = htab->glink_eh_frame; | |
6467 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 6468 | if (bfd_link_pic (info)) |
6177242a AM |
6469 | { |
6470 | s->size += 4; | |
6471 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
6472 | s->size += 4; | |
6473 | } | |
6474 | } | |
6475 | ||
25dbc73a AM |
6476 | /* We've now determined the sizes of the various dynamic sections. |
6477 | Allocate memory for them. */ | |
6478 | relocs = FALSE; | |
6479 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 6480 | { |
9d8504b1 PB |
6481 | bfd_boolean strip_section = TRUE; |
6482 | ||
25dbc73a AM |
6483 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
6484 | continue; | |
252b5132 | 6485 | |
ce558b89 AM |
6486 | if (s == htab->elf.splt |
6487 | || s == htab->elf.sgot) | |
25dbc73a | 6488 | { |
9d8504b1 PB |
6489 | /* We'd like to strip these sections if they aren't needed, but if |
6490 | we've exported dynamic symbols from them we must leave them. | |
6491 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 6492 | if (htab->elf.hplt != NULL) |
9d8504b1 | 6493 | strip_section = FALSE; |
25dbc73a AM |
6494 | /* Strip this section if we don't need it; see the |
6495 | comment below. */ | |
6496 | } | |
ce558b89 | 6497 | else if (s == htab->elf.iplt |
e054468f | 6498 | || s == htab->glink |
6177242a | 6499 | || s == htab->glink_eh_frame |
ce558b89 | 6500 | || s == htab->elf.sgotplt |
e054468f | 6501 | || s == htab->sbss |
9d19e4fd | 6502 | || s == htab->elf.sdynbss |
5474d94f | 6503 | || s == htab->elf.sdynrelro |
15bfcc77 | 6504 | || s == htab->dynsbss) |
25dbc73a | 6505 | { |
c9a2f333 | 6506 | /* Strip these too. */ |
25dbc73a | 6507 | } |
15bfcc77 AM |
6508 | else if (s == htab->sdata[0].section |
6509 | || s == htab->sdata[1].section) | |
6510 | { | |
6511 | strip_section = (s->flags & SEC_KEEP) == 0; | |
6512 | } | |
a0f49396 NC |
6513 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
6514 | ".rela")) | |
25dbc73a | 6515 | { |
c456f082 | 6516 | if (s->size != 0) |
25dbc73a AM |
6517 | { |
6518 | /* Remember whether there are any relocation sections. */ | |
6519 | relocs = TRUE; | |
252b5132 | 6520 | |
25dbc73a AM |
6521 | /* We use the reloc_count field as a counter if we need |
6522 | to copy relocs into the output file. */ | |
6523 | s->reloc_count = 0; | |
252b5132 RH |
6524 | } |
6525 | } | |
25dbc73a AM |
6526 | else |
6527 | { | |
6528 | /* It's not one of our sections, so don't allocate space. */ | |
6529 | continue; | |
6530 | } | |
252b5132 | 6531 | |
9d8504b1 | 6532 | if (s->size == 0 && strip_section) |
25dbc73a | 6533 | { |
c456f082 AM |
6534 | /* If we don't need this section, strip it from the |
6535 | output file. This is mostly to handle .rela.bss and | |
6536 | .rela.plt. We must create both sections in | |
6537 | create_dynamic_sections, because they must be created | |
6538 | before the linker maps input sections to output | |
6539 | sections. The linker does that before | |
6540 | adjust_dynamic_symbol is called, and it is that | |
6541 | function which decides whether anything needs to go | |
6542 | into these sections. */ | |
8423293d | 6543 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
6544 | continue; |
6545 | } | |
7fce784e | 6546 | |
d7128ce4 | 6547 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
6548 | continue; |
6549 | ||
25dbc73a AM |
6550 | /* Allocate memory for the section contents. */ |
6551 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
6552 | if (s->contents == NULL) | |
6553 | return FALSE; | |
6554 | } | |
252b5132 | 6555 | |
25dbc73a | 6556 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 6557 | { |
25dbc73a AM |
6558 | /* Add some entries to the .dynamic section. We fill in the |
6559 | values later, in ppc_elf_finish_dynamic_sections, but we | |
6560 | must add the entries now so that we get the correct size for | |
6561 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6562 | dynamic linker and used by the debugger. */ | |
6563 | #define add_dynamic_entry(TAG, VAL) \ | |
6564 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 6565 | |
0e1862bb | 6566 | if (bfd_link_executable (info)) |
7619e7c7 | 6567 | { |
25dbc73a AM |
6568 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
6569 | return FALSE; | |
7619e7c7 AM |
6570 | } |
6571 | ||
ce558b89 | 6572 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
7619e7c7 | 6573 | { |
25dbc73a AM |
6574 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6575 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6576 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
6577 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
6578 | return FALSE; | |
6579 | } | |
7619e7c7 | 6580 | |
c7e17e05 AM |
6581 | if (htab->plt_type == PLT_NEW |
6582 | && htab->glink != NULL | |
6583 | && htab->glink->size != 0) | |
d7128ce4 | 6584 | { |
1fe44d79 | 6585 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 6586 | return FALSE; |
5446cbdf | 6587 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
6588 | && htab->tls_get_addr != NULL |
6589 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 6590 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 6591 | return FALSE; |
d7128ce4 AM |
6592 | } |
6593 | ||
25dbc73a AM |
6594 | if (relocs) |
6595 | { | |
6596 | if (!add_dynamic_entry (DT_RELA, 0) | |
6597 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6598 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
6599 | return FALSE; | |
6600 | } | |
7619e7c7 | 6601 | |
25dbc73a AM |
6602 | /* If any dynamic relocs apply to a read-only section, then we |
6603 | need a DT_TEXTREL entry. */ | |
6604 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 6605 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 6606 | info); |
7619e7c7 | 6607 | |
25dbc73a AM |
6608 | if ((info->flags & DF_TEXTREL) != 0) |
6609 | { | |
6610 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
6611 | return FALSE; | |
7619e7c7 | 6612 | } |
7a2b07ff NS |
6613 | if (htab->is_vxworks |
6614 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
6615 | return FALSE; | |
6616 | } | |
25dbc73a AM |
6617 | #undef add_dynamic_entry |
6618 | ||
7e01508c AM |
6619 | if (htab->glink_eh_frame != NULL |
6620 | && htab->glink_eh_frame->contents != NULL) | |
6621 | { | |
6622 | unsigned char *p = htab->glink_eh_frame->contents; | |
6623 | bfd_vma val; | |
6624 | ||
6625 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
6626 | /* CIE length (rewrite in case little-endian). */ | |
6627 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
6628 | p += sizeof (glink_eh_frame_cie); | |
6629 | /* FDE length. */ | |
6630 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
6631 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6632 | p += 4; | |
6633 | /* CIE pointer. */ | |
6634 | val = p - htab->glink_eh_frame->contents; | |
6635 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6636 | p += 4; | |
6637 | /* Offset to .glink. Set later. */ | |
6638 | p += 4; | |
6639 | /* .glink size. */ | |
6640 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
6641 | p += 4; | |
6642 | /* Augmentation. */ | |
6643 | p += 1; | |
6644 | ||
0e1862bb | 6645 | if (bfd_link_pic (info) |
7e01508c AM |
6646 | && htab->elf.dynamic_sections_created) |
6647 | { | |
6648 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
6649 | if (adv < 64) | |
6650 | *p++ = DW_CFA_advance_loc + adv; | |
6651 | else if (adv < 256) | |
6652 | { | |
6653 | *p++ = DW_CFA_advance_loc1; | |
6654 | *p++ = adv; | |
6655 | } | |
6656 | else if (adv < 65536) | |
6657 | { | |
6658 | *p++ = DW_CFA_advance_loc2; | |
6659 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
6660 | p += 2; | |
6661 | } | |
6662 | else | |
6663 | { | |
6664 | *p++ = DW_CFA_advance_loc4; | |
6665 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
6666 | p += 4; | |
6667 | } | |
6668 | *p++ = DW_CFA_register; | |
6669 | *p++ = 65; | |
6670 | p++; | |
6671 | *p++ = DW_CFA_advance_loc + 4; | |
6672 | *p++ = DW_CFA_restore_extended; | |
6673 | *p++ = 65; | |
6674 | } | |
6675 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
6676 | == htab->glink_eh_frame->size); | |
6677 | } | |
6678 | ||
7619e7c7 AM |
6679 | return TRUE; |
6680 | } | |
0eb4a168 | 6681 | |
93d1b056 AM |
6682 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
6683 | if it looks like nothing is using them. */ | |
6684 | ||
6685 | static void | |
6686 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
6687 | { | |
6688 | struct elf_link_hash_entry *sda = lsect->sym; | |
6689 | ||
6690 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
6691 | { | |
6692 | asection *s; | |
6693 | ||
6694 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6695 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6696 | { | |
6697 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6698 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6699 | { | |
6700 | sda->def_regular = 0; | |
6701 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6702 | sda->ref_dynamic = 1; | |
6703 | sda->forced_local = 0; | |
6704 | } | |
6705 | } | |
6706 | } | |
6707 | } | |
6708 | ||
6709 | void | |
6710 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6711 | { | |
6712 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6713 | ||
6714 | if (htab != NULL) | |
6715 | { | |
6716 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6717 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6718 | } | |
6719 | } | |
6720 | ||
6721 | ||
0eb4a168 AM |
6722 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6723 | ||
6724 | static bfd_boolean | |
6725 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6726 | { | |
6727 | if (h->plt.plist != NULL | |
6728 | && !h->def_regular | |
6729 | && (!h->pointer_equality_needed | |
6730 | || !h->ref_regular_nonweak)) | |
6731 | return FALSE; | |
6732 | ||
6733 | return _bfd_elf_hash_symbol (h); | |
6734 | } | |
25dbc73a AM |
6735 | \f |
6736 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6737 | ||
01017ef8 NS |
6738 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6739 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6740 | static const int shared_stub_entry[] = |
6741 | { | |
6742 | 0x7c0802a6, /* mflr 0 */ | |
6743 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6744 | 0x7d8802a6, /* mflr 12 */ |
6745 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6746 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6747 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6748 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6749 | 0x4e800420, /* bctr */ |
6750 | }; | |
6751 | ||
6752 | static const int stub_entry[] = | |
6753 | { | |
01017ef8 NS |
6754 | 0x3d800000, /* lis 12,xxx@ha */ |
6755 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6756 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6757 | 0x4e800420, /* bctr */ |
6758 | }; | |
6759 | ||
5446cbdf AM |
6760 | struct ppc_elf_relax_info |
6761 | { | |
6762 | unsigned int workaround_size; | |
d3e454b9 | 6763 | unsigned int picfixup_size; |
5446cbdf AM |
6764 | }; |
6765 | ||
6766 | /* This function implements long branch trampolines, and the ppc476 | |
6767 | icache bug workaround. Any section needing trampolines or patch | |
6768 | space for the workaround has its size extended so that we can | |
53291d1f | 6769 | add trampolines at the end of the section. */ |
5446cbdf | 6770 | |
25dbc73a AM |
6771 | static bfd_boolean |
6772 | ppc_elf_relax_section (bfd *abfd, | |
6773 | asection *isec, | |
6774 | struct bfd_link_info *link_info, | |
6775 | bfd_boolean *again) | |
6776 | { | |
d3e454b9 | 6777 | struct one_branch_fixup |
25dbc73a | 6778 | { |
d3e454b9 | 6779 | struct one_branch_fixup *next; |
25dbc73a | 6780 | asection *tsec; |
01017ef8 NS |
6781 | /* Final link, can use the symbol offset. For a |
6782 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6783 | bfd_vma toff; |
6784 | bfd_vma trampoff; | |
6785 | }; | |
7619e7c7 | 6786 | |
25dbc73a AM |
6787 | Elf_Internal_Shdr *symtab_hdr; |
6788 | bfd_byte *contents = NULL; | |
6789 | Elf_Internal_Sym *isymbuf = NULL; | |
6790 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6791 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 6792 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 6793 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6794 | unsigned changes = 0; |
5446cbdf | 6795 | bfd_boolean workaround_change; |
d7128ce4 | 6796 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 6797 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 6798 | asection *got2; |
50248c89 | 6799 | bfd_boolean maybe_pasted; |
7619e7c7 | 6800 | |
25dbc73a | 6801 | *again = FALSE; |
7619e7c7 | 6802 | |
5446cbdf | 6803 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6804 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6805 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6806 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6807 | || isec->size < 4) | |
25dbc73a | 6808 | return TRUE; |
7619e7c7 | 6809 | |
c8a1f254 NS |
6810 | /* We cannot represent the required PIC relocs in the output, so don't |
6811 | do anything. The linker doesn't support mixing -shared and -r | |
6812 | anyway. */ | |
0e1862bb | 6813 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 6814 | return TRUE; |
5b914448 | 6815 | |
5446cbdf AM |
6816 | htab = ppc_elf_hash_table (link_info); |
6817 | if (htab == NULL) | |
6818 | return TRUE; | |
6819 | ||
6820 | isec->size = (isec->size + 3) & -4; | |
6821 | if (isec->rawsize == 0) | |
6822 | isec->rawsize = isec->size; | |
6823 | trampbase = isec->size; | |
6824 | ||
53291d1f AM |
6825 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6826 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6827 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6828 | ||
d3e454b9 AM |
6829 | if (htab->params->ppc476_workaround |
6830 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
6831 | { |
6832 | if (elf_section_data (isec)->sec_info == NULL) | |
6833 | { | |
5446cbdf AM |
6834 | elf_section_data (isec)->sec_info |
6835 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6836 | if (elf_section_data (isec)->sec_info == NULL) | |
6837 | return FALSE; | |
6838 | } | |
6839 | relax_info = elf_section_data (isec)->sec_info; | |
6840 | trampbase -= relax_info->workaround_size; | |
6841 | } | |
6842 | ||
50248c89 AM |
6843 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6844 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6845 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6846 | trampoff = trampbase; |
6847 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6848 | trampoff += 4; |
7619e7c7 | 6849 | |
0ffa91dd | 6850 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
6851 | picfixup_size = 0; |
6852 | if (htab->params->branch_trampolines | |
6853 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 6854 | { |
5446cbdf AM |
6855 | /* Get a copy of the native relocations. */ |
6856 | if (isec->reloc_count != 0) | |
25dbc73a | 6857 | { |
5446cbdf AM |
6858 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6859 | link_info->keep_memory); | |
6860 | if (internal_relocs == NULL) | |
6861 | goto error_return; | |
25dbc73a | 6862 | } |
7619e7c7 | 6863 | |
5446cbdf AM |
6864 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6865 | ||
6866 | irelend = internal_relocs + isec->reloc_count; | |
6867 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6868 | { |
5446cbdf AM |
6869 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6870 | bfd_vma toff, roff; | |
6871 | asection *tsec; | |
d3e454b9 | 6872 | struct one_branch_fixup *f; |
5446cbdf | 6873 | size_t insn_offset = 0; |
d3e454b9 | 6874 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
6875 | bfd_byte *hit_addr; |
6876 | unsigned long t0; | |
6877 | struct elf_link_hash_entry *h; | |
6878 | struct plt_entry **plist; | |
6879 | unsigned char sym_type; | |
6880 | ||
6881 | switch (r_type) | |
6882 | { | |
6883 | case R_PPC_REL24: | |
6884 | case R_PPC_LOCAL24PC: | |
6885 | case R_PPC_PLTREL24: | |
6886 | max_branch_offset = 1 << 25; | |
6887 | break; | |
6888 | ||
6889 | case R_PPC_REL14: | |
6890 | case R_PPC_REL14_BRTAKEN: | |
6891 | case R_PPC_REL14_BRNTAKEN: | |
6892 | max_branch_offset = 1 << 15; | |
6893 | break; | |
7fce784e | 6894 | |
d3e454b9 AM |
6895 | case R_PPC_ADDR16_HA: |
6896 | if (htab->params->pic_fixup > 0) | |
6897 | break; | |
6898 | continue; | |
6899 | ||
5446cbdf AM |
6900 | default: |
6901 | continue; | |
6902 | } | |
6903 | ||
6904 | /* Get the value of the symbol referred to by the reloc. */ | |
6905 | h = NULL; | |
6906 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
25dbc73a | 6907 | { |
5446cbdf AM |
6908 | /* A local symbol. */ |
6909 | Elf_Internal_Sym *isym; | |
6910 | ||
6911 | /* Read this BFD's local symbols. */ | |
25dbc73a | 6912 | if (isymbuf == NULL) |
5446cbdf AM |
6913 | { |
6914 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6915 | if (isymbuf == NULL) | |
6916 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
6917 | symtab_hdr->sh_info, 0, | |
6918 | NULL, NULL, NULL); | |
6919 | if (isymbuf == 0) | |
6920 | goto error_return; | |
6921 | } | |
6922 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6923 | if (isym->st_shndx == SHN_UNDEF) | |
6924 | tsec = bfd_und_section_ptr; | |
6925 | else if (isym->st_shndx == SHN_ABS) | |
6926 | tsec = bfd_abs_section_ptr; | |
6927 | else if (isym->st_shndx == SHN_COMMON) | |
6928 | tsec = bfd_com_section_ptr; | |
6929 | else | |
6930 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6931 | ||
6932 | toff = isym->st_value; | |
6933 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6934 | } |
25dbc73a | 6935 | else |
5446cbdf AM |
6936 | { |
6937 | /* Global symbol handling. */ | |
6938 | unsigned long indx; | |
7fce784e | 6939 | |
5446cbdf AM |
6940 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
6941 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 6942 | |
5446cbdf AM |
6943 | while (h->root.type == bfd_link_hash_indirect |
6944 | || h->root.type == bfd_link_hash_warning) | |
6945 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 6946 | |
5446cbdf AM |
6947 | if (h->root.type == bfd_link_hash_defined |
6948 | || h->root.type == bfd_link_hash_defweak) | |
6949 | { | |
6950 | tsec = h->root.u.def.section; | |
6951 | toff = h->root.u.def.value; | |
6952 | } | |
6953 | else if (h->root.type == bfd_link_hash_undefined | |
6954 | || h->root.type == bfd_link_hash_undefweak) | |
6955 | { | |
6956 | tsec = bfd_und_section_ptr; | |
0e1862bb | 6957 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
6958 | } |
6959 | else | |
6960 | continue; | |
6961 | ||
9f7552cf AM |
6962 | /* If this branch is to __tls_get_addr then we may later |
6963 | optimise away the call. We won't be needing a long- | |
6964 | branch stub in that case. */ | |
0e1862bb | 6965 | if (bfd_link_executable (link_info) |
9f7552cf AM |
6966 | && h == htab->tls_get_addr |
6967 | && irel != internal_relocs) | |
6968 | { | |
6969 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6970 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6971 | unsigned int tls_mask = 0; | |
6972 | ||
6973 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6974 | R_PPC_TLSLD, or for older object files, a reloc | |
6975 | on the __tls_get_addr arg setup insn. Get tls | |
6976 | mask bits from the symbol on that reloc. */ | |
6977 | if (t_symndx < symtab_hdr->sh_info) | |
6978 | { | |
6979 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6980 | ||
6981 | if (local_got_offsets != NULL) | |
6982 | { | |
6983 | struct plt_entry **local_plt = (struct plt_entry **) | |
6984 | (local_got_offsets + symtab_hdr->sh_info); | |
6985 | char *lgot_masks = (char *) | |
6986 | (local_plt + symtab_hdr->sh_info); | |
6987 | tls_mask = lgot_masks[t_symndx]; | |
6988 | } | |
6989 | } | |
6990 | else | |
6991 | { | |
6992 | struct elf_link_hash_entry *th | |
6993 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
6994 | ||
6995 | while (th->root.type == bfd_link_hash_indirect | |
6996 | || th->root.type == bfd_link_hash_warning) | |
6997 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
6998 | ||
6999 | tls_mask | |
7000 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
7001 | } | |
7002 | ||
7003 | /* The mask bits tell us if the call will be | |
7004 | optimised away. */ | |
7005 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
7006 | && (t_rtype == R_PPC_TLSGD | |
7007 | || t_rtype == R_PPC_GOT_TLSGD16 | |
7008 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
7009 | continue; | |
7010 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
7011 | && (t_rtype == R_PPC_TLSLD | |
7012 | || t_rtype == R_PPC_GOT_TLSLD16 | |
7013 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
7014 | continue; | |
7015 | } | |
7016 | ||
5446cbdf AM |
7017 | sym_type = h->type; |
7018 | } | |
7619e7c7 | 7019 | |
d3e454b9 AM |
7020 | if (r_type == R_PPC_ADDR16_HA) |
7021 | { | |
7022 | if (h != NULL | |
7023 | && !h->def_regular | |
7024 | && h->protected_def | |
7025 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7026 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
7027 | picfixup_size += 12; | |
7028 | continue; | |
7029 | } | |
7030 | ||
5446cbdf AM |
7031 | /* The condition here under which we call find_plt_ent must |
7032 | match that in relocate_section. If we call find_plt_ent here | |
7033 | but not in relocate_section, or vice versa, then the branch | |
7034 | destination used here may be incorrect. */ | |
7035 | plist = NULL; | |
7036 | if (h != NULL) | |
25dbc73a | 7037 | { |
5446cbdf AM |
7038 | /* We know is_branch_reloc (r_type) is true. */ |
7039 | if (h->type == STT_GNU_IFUNC | |
7040 | || r_type == R_PPC_PLTREL24) | |
7041 | plist = &h->plt.plist; | |
25dbc73a | 7042 | } |
5446cbdf AM |
7043 | else if (sym_type == STT_GNU_IFUNC |
7044 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 7045 | { |
5446cbdf AM |
7046 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
7047 | struct plt_entry **local_plt = (struct plt_entry **) | |
7048 | (local_got_offsets + symtab_hdr->sh_info); | |
7049 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 7050 | } |
5446cbdf | 7051 | if (plist != NULL) |
a9585d22 | 7052 | { |
5446cbdf AM |
7053 | bfd_vma addend = 0; |
7054 | struct plt_entry *ent; | |
7055 | ||
0e1862bb | 7056 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
7057 | addend = irel->r_addend; |
7058 | ent = find_plt_ent (plist, got2, addend); | |
7059 | if (ent != NULL) | |
a9585d22 | 7060 | { |
5446cbdf AM |
7061 | if (htab->plt_type == PLT_NEW |
7062 | || h == NULL | |
7063 | || !htab->elf.dynamic_sections_created | |
7064 | || h->dynindx == -1) | |
7065 | { | |
7066 | tsec = htab->glink; | |
7067 | toff = ent->glink_offset; | |
7068 | } | |
7069 | else | |
7070 | { | |
ce558b89 | 7071 | tsec = htab->elf.splt; |
5446cbdf AM |
7072 | toff = ent->plt.offset; |
7073 | } | |
de972ffa AM |
7074 | } |
7075 | } | |
de972ffa | 7076 | |
5446cbdf AM |
7077 | /* If the branch and target are in the same section, you have |
7078 | no hope of adding stubs. We'll error out later should the | |
7079 | branch overflow. */ | |
7080 | if (tsec == isec) | |
7081 | continue; | |
25dbc73a | 7082 | |
5446cbdf AM |
7083 | /* There probably isn't any reason to handle symbols in |
7084 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
7085 | attribute for a code section, and we are only looking at | |
7086 | branches. However, implement it correctly here as a | |
7087 | reference for other target relax_section functions. */ | |
7088 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7089 | { | |
7090 | /* At this stage in linking, no SEC_MERGE symbol has been | |
7091 | adjusted, so all references to such symbols need to be | |
7092 | passed through _bfd_merged_section_offset. (Later, in | |
7093 | relocate_section, all SEC_MERGE symbols *except* for | |
7094 | section symbols have been adjusted.) | |
7095 | ||
7096 | gas may reduce relocations against symbols in SEC_MERGE | |
7097 | sections to a relocation against the section symbol when | |
7098 | the original addend was zero. When the reloc is against | |
7099 | a section symbol we should include the addend in the | |
7100 | offset passed to _bfd_merged_section_offset, since the | |
7101 | location of interest is the original symbol. On the | |
7102 | other hand, an access to "sym+addend" where "sym" is not | |
7103 | a section symbol should not include the addend; Such an | |
7104 | access is presumed to be an offset from "sym"; The | |
7105 | location of interest is just "sym". */ | |
7106 | if (sym_type == STT_SECTION) | |
7107 | toff += irel->r_addend; | |
7108 | ||
7109 | toff | |
7110 | = _bfd_merged_section_offset (abfd, &tsec, | |
7111 | elf_section_data (tsec)->sec_info, | |
7112 | toff); | |
7113 | ||
7114 | if (sym_type != STT_SECTION) | |
7115 | toff += irel->r_addend; | |
7116 | } | |
7117 | /* PLTREL24 addends are special. */ | |
7118 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 7119 | toff += irel->r_addend; |
7619e7c7 | 7120 | |
5446cbdf | 7121 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 7122 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
7123 | && tsec == bfd_und_section_ptr) |
7124 | || tsec->output_section == NULL | |
7125 | || (tsec->owner != NULL | |
7126 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
7127 | continue; | |
7619e7c7 | 7128 | |
5446cbdf | 7129 | roff = irel->r_offset; |
7de713b9 | 7130 | |
5446cbdf AM |
7131 | /* If the branch is in range, no need to do anything. */ |
7132 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 7133 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
7134 | /* A relocatable link may have sections moved during |
7135 | final link, so do not presume they remain in range. */ | |
7136 | || tsec->output_section == isec->output_section)) | |
7137 | { | |
7138 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 7139 | |
5446cbdf AM |
7140 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7141 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7142 | if (symaddr - reladdr + max_branch_offset | |
7143 | < 2 * max_branch_offset) | |
7144 | continue; | |
7145 | } | |
01017ef8 | 7146 | |
5446cbdf | 7147 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 7148 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
7149 | if (f->tsec == tsec && f->toff == toff) |
7150 | break; | |
252b5132 | 7151 | |
5446cbdf AM |
7152 | if (f == NULL) |
7153 | { | |
7154 | size_t size; | |
7155 | unsigned long stub_rtype; | |
25dbc73a | 7156 | |
5446cbdf AM |
7157 | val = trampoff - roff; |
7158 | if (val >= max_branch_offset) | |
7159 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
7160 | one. We'll report an error later. */ | |
7161 | continue; | |
252b5132 | 7162 | |
0e1862bb | 7163 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
7164 | { |
7165 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
7166 | insn_offset = 12; | |
7167 | } | |
7168 | else | |
7169 | { | |
7170 | size = 4 * ARRAY_SIZE (stub_entry); | |
7171 | insn_offset = 0; | |
7172 | } | |
7173 | stub_rtype = R_PPC_RELAX; | |
ce558b89 | 7174 | if (tsec == htab->elf.splt |
5446cbdf AM |
7175 | || tsec == htab->glink) |
7176 | { | |
7177 | stub_rtype = R_PPC_RELAX_PLT; | |
7178 | if (r_type == R_PPC_PLTREL24) | |
7179 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
7180 | } | |
252b5132 | 7181 | |
5446cbdf AM |
7182 | /* Hijack the old relocation. Since we need two |
7183 | relocations for this use a "composite" reloc. */ | |
7184 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
7185 | stub_rtype); | |
7186 | irel->r_offset = trampoff + insn_offset; | |
7187 | if (r_type == R_PPC_PLTREL24 | |
7188 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
7189 | irel->r_addend = 0; | |
7190 | ||
7191 | /* Record the fixup so we don't do it again this section. */ | |
7192 | f = bfd_malloc (sizeof (*f)); | |
d3e454b9 | 7193 | f->next = branch_fixups; |
5446cbdf AM |
7194 | f->tsec = tsec; |
7195 | f->toff = toff; | |
7196 | f->trampoff = trampoff; | |
d3e454b9 | 7197 | branch_fixups = f; |
5446cbdf AM |
7198 | |
7199 | trampoff += size; | |
7200 | changes++; | |
25dbc73a AM |
7201 | } |
7202 | else | |
7203 | { | |
5446cbdf AM |
7204 | val = f->trampoff - roff; |
7205 | if (val >= max_branch_offset) | |
7206 | continue; | |
252b5132 | 7207 | |
5446cbdf AM |
7208 | /* Nop out the reloc, since we're finalizing things here. */ |
7209 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7210 | } | |
252b5132 | 7211 | |
5446cbdf AM |
7212 | /* Get the section contents. */ |
7213 | if (contents == NULL) | |
25dbc73a | 7214 | { |
5446cbdf AM |
7215 | /* Get cached copy if it exists. */ |
7216 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
7217 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 7218 | /* Go get them off disk. */ |
5446cbdf | 7219 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
7220 | goto error_return; |
7221 | } | |
252b5132 | 7222 | |
5446cbdf AM |
7223 | /* Fix up the existing branch to hit the trampoline. */ |
7224 | hit_addr = contents + roff; | |
7225 | switch (r_type) | |
7226 | { | |
7227 | case R_PPC_REL24: | |
7228 | case R_PPC_LOCAL24PC: | |
7229 | case R_PPC_PLTREL24: | |
7230 | t0 = bfd_get_32 (abfd, hit_addr); | |
7231 | t0 &= ~0x3fffffc; | |
7232 | t0 |= val & 0x3fffffc; | |
7233 | bfd_put_32 (abfd, t0, hit_addr); | |
7234 | break; | |
252b5132 | 7235 | |
5446cbdf AM |
7236 | case R_PPC_REL14: |
7237 | case R_PPC_REL14_BRTAKEN: | |
7238 | case R_PPC_REL14_BRNTAKEN: | |
7239 | t0 = bfd_get_32 (abfd, hit_addr); | |
7240 | t0 &= ~0xfffc; | |
7241 | t0 |= val & 0xfffc; | |
7242 | bfd_put_32 (abfd, t0, hit_addr); | |
7243 | break; | |
7244 | } | |
25dbc73a | 7245 | } |
252b5132 | 7246 | |
d3e454b9 | 7247 | while (branch_fixups != NULL) |
25dbc73a | 7248 | { |
d3e454b9 AM |
7249 | struct one_branch_fixup *f = branch_fixups; |
7250 | branch_fixups = branch_fixups->next; | |
25dbc73a AM |
7251 | free (f); |
7252 | } | |
5446cbdf | 7253 | } |
252b5132 | 7254 | |
5446cbdf AM |
7255 | workaround_change = FALSE; |
7256 | newsize = trampoff; | |
795bc6b3 | 7257 | if (htab->params->ppc476_workaround |
0e1862bb | 7258 | && (!bfd_link_relocatable (link_info) |
795bc6b3 | 7259 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) |
5446cbdf AM |
7260 | { |
7261 | bfd_vma addr, end_addr; | |
7262 | unsigned int crossings; | |
795bc6b3 | 7263 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
7264 | |
7265 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 7266 | end_addr = addr + trampoff; |
5446cbdf | 7267 | addr &= -pagesize; |
795bc6b3 | 7268 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
7269 | if (crossings != 0) |
7270 | { | |
7271 | /* Keep space aligned, to ensure the patch code itself does | |
7272 | not cross a page. Don't decrease size calculated on a | |
7273 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 7274 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
7275 | newsize += crossings * 16; |
7276 | if (relax_info->workaround_size < newsize) | |
7277 | { | |
7278 | relax_info->workaround_size = newsize; | |
7279 | workaround_change = TRUE; | |
5446cbdf AM |
7280 | } |
7281 | /* Ensure relocate_section is called. */ | |
7282 | isec->flags |= SEC_RELOC; | |
7283 | } | |
7284 | newsize = trampoff + relax_info->workaround_size; | |
7285 | } | |
7286 | ||
d3e454b9 AM |
7287 | if (htab->params->pic_fixup > 0) |
7288 | { | |
7289 | picfixup_size -= relax_info->picfixup_size; | |
7290 | if (picfixup_size != 0) | |
7291 | relax_info->picfixup_size += picfixup_size; | |
7292 | newsize += relax_info->picfixup_size; | |
7293 | } | |
7294 | ||
7295 | if (changes != 0 || picfixup_size != 0 || workaround_change) | |
5446cbdf AM |
7296 | isec->size = newsize; |
7297 | ||
25dbc73a AM |
7298 | if (isymbuf != NULL |
7299 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 7300 | { |
25dbc73a AM |
7301 | if (! link_info->keep_memory) |
7302 | free (isymbuf); | |
252b5132 | 7303 | else |
25dbc73a AM |
7304 | { |
7305 | /* Cache the symbols for elf_link_input_bfd. */ | |
7306 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
7307 | } | |
252b5132 RH |
7308 | } |
7309 | ||
25dbc73a AM |
7310 | if (contents != NULL |
7311 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7312 | { | |
53291d1f | 7313 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
7314 | free (contents); |
7315 | else | |
7316 | { | |
7317 | /* Cache the section contents for elf_link_input_bfd. */ | |
7318 | elf_section_data (isec)->this_hdr.contents = contents; | |
7319 | } | |
7320 | } | |
252b5132 | 7321 | |
d3e454b9 | 7322 | changes += picfixup_size; |
9bc4e62b | 7323 | if (changes != 0) |
25dbc73a | 7324 | { |
9bc4e62b NS |
7325 | /* Append sufficient NOP relocs so we can write out relocation |
7326 | information for the trampolines. */ | |
d4730f92 | 7327 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
7328 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
7329 | * sizeof (*new_relocs)); | |
7330 | unsigned ix; | |
5b914448 | 7331 | |
9bc4e62b NS |
7332 | if (!new_relocs) |
7333 | goto error_return; | |
7334 | memcpy (new_relocs, internal_relocs, | |
7335 | isec->reloc_count * sizeof (*new_relocs)); | |
7336 | for (ix = changes; ix--;) | |
7337 | { | |
7338 | irel = new_relocs + ix + isec->reloc_count; | |
7339 | ||
7340 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7341 | } | |
7342 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 7343 | free (internal_relocs); |
9bc4e62b NS |
7344 | elf_section_data (isec)->relocs = new_relocs; |
7345 | isec->reloc_count += changes; | |
d4730f92 BS |
7346 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
7347 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 7348 | } |
5446cbdf AM |
7349 | else if (internal_relocs != NULL |
7350 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 7351 | free (internal_relocs); |
252b5132 | 7352 | |
5446cbdf | 7353 | *again = changes != 0 || workaround_change; |
b34976b6 | 7354 | return TRUE; |
25dbc73a AM |
7355 | |
7356 | error_return: | |
d3e454b9 | 7357 | while (branch_fixups != NULL) |
5446cbdf | 7358 | { |
d3e454b9 AM |
7359 | struct one_branch_fixup *f = branch_fixups; |
7360 | branch_fixups = branch_fixups->next; | |
5446cbdf AM |
7361 | free (f); |
7362 | } | |
25dbc73a AM |
7363 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
7364 | free (isymbuf); | |
7365 | if (contents != NULL | |
7366 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7367 | free (contents); | |
7368 | if (internal_relocs != NULL | |
7369 | && elf_section_data (isec)->relocs != internal_relocs) | |
7370 | free (internal_relocs); | |
7371 | return FALSE; | |
252b5132 | 7372 | } |
252b5132 | 7373 | \f |
8a696751 AM |
7374 | /* What to do when ld finds relocations against symbols defined in |
7375 | discarded sections. */ | |
7376 | ||
7377 | static unsigned int | |
7378 | ppc_elf_action_discarded (asection *sec) | |
7379 | { | |
7380 | if (strcmp (".fixup", sec->name) == 0) | |
7381 | return 0; | |
7382 | ||
7383 | if (strcmp (".got2", sec->name) == 0) | |
7384 | return 0; | |
7385 | ||
7386 | return _bfd_elf_default_action_discarded (sec); | |
7387 | } | |
c9a2f333 | 7388 | \f |
25dbc73a | 7389 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 7390 | |
25dbc73a | 7391 | static bfd_vma |
76750a2f | 7392 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
7393 | elf_linker_section_t *lsect, |
7394 | struct elf_link_hash_entry *h, | |
7395 | bfd_vma relocation, | |
2bb04cf2 | 7396 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
7397 | { |
7398 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 7399 | |
25dbc73a | 7400 | BFD_ASSERT (lsect != NULL); |
252b5132 | 7401 | |
25dbc73a | 7402 | if (h != NULL) |
252b5132 | 7403 | { |
25dbc73a AM |
7404 | /* Handle global symbol. */ |
7405 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 7406 | |
25dbc73a | 7407 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
7408 | BFD_ASSERT (eh->elf.def_regular); |
7409 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
7410 | } |
7411 | else | |
7412 | { | |
7413 | /* Handle local symbol. */ | |
7414 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 7415 | |
0c8d6e5c | 7416 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 7417 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
7418 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
7419 | } | |
252b5132 | 7420 | |
76750a2f AM |
7421 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
7422 | rel->r_addend, | |
7423 | lsect); | |
7424 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 7425 | |
76750a2f AM |
7426 | /* Offset will always be a multiple of four, so use the bottom bit |
7427 | as a "written" flag. */ | |
7428 | if ((linker_section_ptr->offset & 1) == 0) | |
7429 | { | |
7430 | bfd_put_32 (lsect->section->owner, | |
7431 | relocation + linker_section_ptr->addend, | |
7432 | lsect->section->contents + linker_section_ptr->offset); | |
7433 | linker_section_ptr->offset += 1; | |
252b5132 RH |
7434 | } |
7435 | ||
bd6c6e2b AM |
7436 | relocation = (lsect->section->output_section->vma |
7437 | + lsect->section->output_offset | |
76750a2f | 7438 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 7439 | - SYM_VAL (lsect->sym)); |
252b5132 | 7440 | |
25dbc73a AM |
7441 | #ifdef DEBUG |
7442 | fprintf (stderr, | |
7443 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
7444 | lsect->name, (long) relocation, (long) relocation); | |
7445 | #endif | |
252b5132 | 7446 | |
bd6c6e2b | 7447 | return relocation; |
252b5132 | 7448 | } |
25dbc73a | 7449 | |
e054468f AM |
7450 | #define PPC_LO(v) ((v) & 0xffff) |
7451 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7452 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7453 | ||
7454 | static void | |
9e390558 AM |
7455 | write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, |
7456 | asection *plt_sec, unsigned char *p, | |
e054468f AM |
7457 | struct bfd_link_info *info) |
7458 | { | |
7459 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7460 | bfd *output_bfd = info->output_bfd; | |
7461 | bfd_vma plt; | |
9e390558 AM |
7462 | unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h); |
7463 | ||
7464 | if (h != NULL | |
7465 | && h == htab->tls_get_addr | |
7466 | && !htab->params->no_tls_get_addr_opt) | |
7467 | { | |
7468 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
7469 | p += 4; | |
7470 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
7471 | p += 4; | |
7472 | bfd_put_32 (output_bfd, MR_0_3, p); | |
7473 | p += 4; | |
7474 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
7475 | p += 4; | |
7476 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
7477 | p += 4; | |
7478 | bfd_put_32 (output_bfd, BEQLR, p); | |
7479 | p += 4; | |
7480 | bfd_put_32 (output_bfd, MR_3_0, p); | |
7481 | p += 4; | |
7482 | bfd_put_32 (output_bfd, NOP, p); | |
7483 | p += 4; | |
7484 | } | |
e054468f AM |
7485 | |
7486 | plt = ((ent->plt.offset & ~1) | |
7487 | + plt_sec->output_section->vma | |
7488 | + plt_sec->output_offset); | |
e054468f | 7489 | |
0e1862bb | 7490 | if (bfd_link_pic (info)) |
e054468f AM |
7491 | { |
7492 | bfd_vma got = 0; | |
7493 | ||
7494 | if (ent->addend >= 32768) | |
7495 | got = (ent->addend | |
7496 | + ent->sec->output_section->vma | |
7497 | + ent->sec->output_offset); | |
7498 | else if (htab->elf.hgot != NULL) | |
7499 | got = SYM_VAL (htab->elf.hgot); | |
7500 | ||
7501 | plt -= got; | |
7502 | ||
7503 | if (plt + 0x8000 < 0x10000) | |
9e390558 | 7504 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); |
e054468f AM |
7505 | else |
7506 | { | |
7507 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7508 | p += 4; | |
7509 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
e054468f AM |
7510 | } |
7511 | } | |
7512 | else | |
7513 | { | |
7514 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7515 | p += 4; | |
7516 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
9e390558 AM |
7517 | } |
7518 | p += 4; | |
7519 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7520 | p += 4; | |
407aa07c AM |
7521 | bfd_put_32 (output_bfd, BCTR, p); |
7522 | p += 4; | |
9e390558 AM |
7523 | while (p < end) |
7524 | { | |
7525 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); | |
e054468f AM |
7526 | p += 4; |
7527 | } | |
7528 | } | |
7529 | ||
bd6c6e2b AM |
7530 | /* Return true if symbol is defined statically. */ |
7531 | ||
7532 | static bfd_boolean | |
7533 | is_static_defined (struct elf_link_hash_entry *h) | |
7534 | { | |
7535 | return ((h->root.type == bfd_link_hash_defined | |
7536 | || h->root.type == bfd_link_hash_defweak) | |
7537 | && h->root.u.def.section != NULL | |
7538 | && h->root.u.def.section->output_section != NULL); | |
7539 | } | |
7540 | ||
2d0f3896 AM |
7541 | /* If INSN is an opcode that may be used with an @tls operand, return |
7542 | the transformed insn for TLS optimisation, otherwise return 0. If | |
7543 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
7544 | ||
7545 | unsigned int | |
7546 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
7547 | { | |
7548 | unsigned int rtra; | |
7549 | ||
7550 | if ((insn & (0x3f << 26)) != 31 << 26) | |
7551 | return 0; | |
7552 | ||
7553 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
7554 | rtra = insn & ((1 << 26) - (1 << 16)); | |
7555 | else if (((insn >> 16) & 0x1f) == reg) | |
7556 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
7557 | else | |
7558 | return 0; | |
7559 | ||
7560 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
7561 | /* add -> addi. */ | |
7562 | insn = 14 << 26; | |
7563 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
7564 | && ((insn & (0x1f << 6)) < 14 << 6 | |
7565 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
7566 | && (insn & (0x1f << 6)) < 24 << 6))) | |
7567 | /* load and store indexed -> dform. */ | |
7568 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
7569 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
7570 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7571 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
7572 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
7573 | /* lwax -> lwa. */ | |
7574 | insn = (58 << 26) | 2; | |
7575 | else | |
7576 | return 0; | |
7577 | insn |= rtra; | |
7578 | return insn; | |
7579 | } | |
7580 | ||
766bc656 AM |
7581 | /* If INSN is an opcode that may be used with an @tprel operand, return |
7582 | the transformed insn for an undefined weak symbol, ie. with the | |
7583 | thread pointer REG operand removed. Otherwise return 0. */ | |
7584 | ||
7585 | unsigned int | |
7586 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
7587 | { | |
7588 | if ((insn & (0x1f << 16)) == reg << 16 | |
7589 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7590 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
7591 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7592 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7593 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7594 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7595 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7596 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7597 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7598 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7599 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7600 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7601 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7602 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7603 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7604 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7605 | && (insn & 3) != 1) | |
7606 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7607 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
7608 | { | |
7609 | insn &= ~(0x1f << 16); | |
7610 | } | |
7611 | else if ((insn & (0x1f << 21)) == reg << 21 | |
7612 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
7613 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
7614 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
7615 | { | |
7616 | insn &= ~(0x1f << 21); | |
7617 | insn |= (insn & (0x1f << 16)) << 5; | |
7618 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
7619 | insn -= 2 >> 26; /* convert to ori,oris */ | |
7620 | } | |
7621 | else | |
7622 | insn = 0; | |
7623 | return insn; | |
7624 | } | |
7625 | ||
1fe532cf AM |
7626 | static bfd_boolean |
7627 | is_insn_ds_form (unsigned int insn) | |
7628 | { | |
7629 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
7630 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
7631 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
7632 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
7633 | } | |
7634 | ||
7635 | static bfd_boolean | |
7636 | is_insn_dq_form (unsigned int insn) | |
7637 | { | |
a680de9a PB |
7638 | return ((insn & (0x3f << 26)) == 56u << 26 /* lq */ |
7639 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
7640 | && (insn & 3) == 1)); | |
1fe532cf AM |
7641 | } |
7642 | ||
252b5132 RH |
7643 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7644 | to handle the relocations for a section. | |
7645 | ||
7646 | The relocs are always passed as Rela structures; if the section | |
7647 | actually uses Rel structures, the r_addend field will always be | |
7648 | zero. | |
7649 | ||
7650 | This function is responsible for adjust the section contents as | |
7651 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7652 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
7653 | necessary. |
7654 | ||
7655 | This function does not have to worry about setting the reloc | |
7656 | address or the reloc symbol index. | |
7657 | ||
7658 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7659 | ||
7660 | LOCAL_SECTIONS is an array giving the section in the input file | |
7661 | corresponding to the st_shndx field of each local symbol. | |
7662 | ||
7663 | The global hash table entry for the global symbols can be found | |
7664 | via elf_sym_hashes (input_bfd). | |
7665 | ||
1049f94e | 7666 | When generating relocatable output, this function must handle |
252b5132 RH |
7667 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7668 | going to be the section symbol corresponding to the output | |
7669 | section, which means that the addend must be adjusted | |
7670 | accordingly. */ | |
7671 | ||
b34976b6 | 7672 | static bfd_boolean |
55fd94b0 AM |
7673 | ppc_elf_relocate_section (bfd *output_bfd, |
7674 | struct bfd_link_info *info, | |
7675 | bfd *input_bfd, | |
7676 | asection *input_section, | |
7677 | bfd_byte *contents, | |
7678 | Elf_Internal_Rela *relocs, | |
7679 | Elf_Internal_Sym *local_syms, | |
7680 | asection **local_sections) | |
252b5132 | 7681 | { |
7619e7c7 AM |
7682 | Elf_Internal_Shdr *symtab_hdr; |
7683 | struct elf_link_hash_entry **sym_hashes; | |
7684 | struct ppc_elf_link_hash_table *htab; | |
7685 | Elf_Internal_Rela *rel; | |
c316a17c | 7686 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
7687 | Elf_Internal_Rela *relend; |
7688 | Elf_Internal_Rela outrel; | |
f95f8542 | 7689 | asection *got2; |
252b5132 | 7690 | bfd_vma *local_got_offsets; |
b34976b6 | 7691 | bfd_boolean ret = TRUE; |
95f0d0d2 | 7692 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
3348747a | 7693 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
7694 | unsigned int picfixup_size = 0; |
7695 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 7696 | |
252b5132 | 7697 | #ifdef DEBUG |
871b3ab2 | 7698 | _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, " |
d003868e AM |
7699 | "%ld relocations%s", |
7700 | input_bfd, input_section, | |
7701 | (long) input_section->reloc_count, | |
0e1862bb | 7702 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
7703 | #endif |
7704 | ||
a6aa5195 AM |
7705 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7706 | ||
e47cd125 | 7707 | /* Initialize howto table if not already done. */ |
8da6118f | 7708 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7709 | ppc_elf_howto_init (); |
7710 | ||
7619e7c7 | 7711 | htab = ppc_elf_hash_table (info); |
252b5132 | 7712 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7713 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7714 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7715 | /* We have to handle relocations in vxworks .tls_vars sections |
7716 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 7717 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
7718 | && !strcmp (input_section->output_section->name, |
7719 | ".tls_vars")); | |
d3e454b9 AM |
7720 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
7721 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 7722 | rel = wrel = relocs; |
7619e7c7 | 7723 | relend = relocs + input_section->reloc_count; |
c316a17c | 7724 | for (; rel < relend; wrel++, rel++) |
252b5132 | 7725 | { |
7619e7c7 AM |
7726 | enum elf_ppc_reloc_type r_type; |
7727 | bfd_vma addend; | |
7728 | bfd_reloc_status_type r; | |
7729 | Elf_Internal_Sym *sym; | |
7730 | asection *sec; | |
7731 | struct elf_link_hash_entry *h; | |
7732 | const char *sym_name; | |
252b5132 RH |
7733 | reloc_howto_type *howto; |
7734 | unsigned long r_symndx; | |
7735 | bfd_vma relocation; | |
91d6fa6a | 7736 | bfd_vma branch_bit, from; |
7619e7c7 AM |
7737 | bfd_boolean unresolved_reloc; |
7738 | bfd_boolean warned; | |
7739 | unsigned int tls_type, tls_mask, tls_gd; | |
e054468f | 7740 | struct plt_entry **ifunc; |
86c95733 | 7741 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7742 | |
c316a17c | 7743 | again: |
55fd94b0 AM |
7744 | r_type = ELF32_R_TYPE (rel->r_info); |
7745 | sym = NULL; | |
7746 | sec = NULL; | |
7747 | h = NULL; | |
7619e7c7 AM |
7748 | unresolved_reloc = FALSE; |
7749 | warned = FALSE; | |
252b5132 | 7750 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7751 | |
252b5132 RH |
7752 | if (r_symndx < symtab_hdr->sh_info) |
7753 | { | |
7754 | sym = local_syms + r_symndx; | |
7755 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7756 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7757 | |
8517fae7 | 7758 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7759 | } |
7760 | else | |
7761 | { | |
62d887d4 L |
7762 | bfd_boolean ignored; |
7763 | ||
b2a8e766 AM |
7764 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7765 | r_symndx, symtab_hdr, sym_hashes, | |
7766 | h, sec, relocation, | |
62d887d4 | 7767 | unresolved_reloc, warned, ignored); |
9abc968f | 7768 | |
252b5132 | 7769 | sym_name = h->root.root.string; |
7619e7c7 AM |
7770 | } |
7771 | ||
dbaa2011 | 7772 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7773 | { |
7774 | /* For relocs against symbols from removed linkonce sections, | |
7775 | or sections discarded by a linker script, we just want the | |
7776 | section contents zeroed. Avoid any special processing. */ | |
7777 | howto = NULL; | |
7778 | if (r_type < R_PPC_max) | |
7779 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
7780 | |
7781 | _bfd_clear_contents (howto, input_bfd, input_section, | |
7782 | contents + rel->r_offset); | |
7783 | wrel->r_offset = rel->r_offset; | |
7784 | wrel->r_info = 0; | |
7785 | wrel->r_addend = 0; | |
7786 | ||
7787 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 7788 | symbols defined in discarded sections. Not done for |
c316a17c AM |
7789 | non-debug to preserve relocs in .eh_frame which the |
7790 | eh_frame editing code expects to be present. */ | |
7791 | if (bfd_link_relocatable (info) | |
7792 | && (input_section->flags & SEC_DEBUGGING)) | |
7793 | wrel--; | |
7794 | ||
7795 | continue; | |
ab96bf03 AM |
7796 | } |
7797 | ||
0e1862bb | 7798 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
7799 | { |
7800 | if (got2 != NULL | |
7801 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7802 | && rel->r_addend != 0) |
ab96bf03 AM |
7803 | { |
7804 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7805 | addend specifies the GOT pointer offset within .got2. */ | |
7806 | rel->r_addend += got2->output_offset; | |
7807 | } | |
53291d1f AM |
7808 | if (r_type != R_PPC_RELAX_PLT |
7809 | && r_type != R_PPC_RELAX_PLTREL24 | |
7810 | && r_type != R_PPC_RELAX) | |
c316a17c | 7811 | goto copy_reloc; |
ab96bf03 AM |
7812 | } |
7813 | ||
7619e7c7 AM |
7814 | /* TLS optimizations. Replace instruction sequences and relocs |
7815 | based on information we collected in tls_optimize. We edit | |
7816 | RELOCS so that --emit-relocs will output something sensible | |
7817 | for the final instruction stream. */ | |
7818 | tls_mask = 0; | |
7819 | tls_gd = 0; | |
727fc41e AM |
7820 | if (h != NULL) |
7821 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7822 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7823 | { |
e054468f | 7824 | struct plt_entry **local_plt; |
727fc41e | 7825 | char *lgot_masks; |
e054468f AM |
7826 | local_plt |
7827 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7828 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7829 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7830 | } |
7831 | ||
7832 | /* Ensure reloc mapping code below stays sane. */ | |
7833 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7834 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7835 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7836 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7837 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7838 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7839 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7840 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7841 | abort (); | |
7842 | switch (r_type) | |
7843 | { | |
7844 | default: | |
7845 | break; | |
7846 | ||
7847 | case R_PPC_GOT_TPREL16: | |
7848 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7849 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7850 | && (tls_mask & TLS_TPREL) == 0) |
7851 | { | |
7852 | bfd_vma insn; | |
91d6fa6a | 7853 | |
95f0d0d2 | 7854 | insn = bfd_get_32 (input_bfd, |
c316a17c | 7855 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7856 | insn &= 31 << 21; |
7857 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
95f0d0d2 | 7858 | bfd_put_32 (input_bfd, insn, |
c316a17c | 7859 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7860 | r_type = R_PPC_TPREL16_HA; |
7861 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7862 | } | |
7863 | break; | |
7864 | ||
7865 | case R_PPC_TLS: | |
e054468f | 7866 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7867 | && (tls_mask & TLS_TPREL) == 0) |
7868 | { | |
2d0f3896 AM |
7869 | bfd_vma insn; |
7870 | ||
95f0d0d2 | 7871 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7872 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7873 | if (insn == 0) | |
7619e7c7 | 7874 | abort (); |
95f0d0d2 | 7875 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
7619e7c7 AM |
7876 | r_type = R_PPC_TPREL16_LO; |
7877 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7878 | |
7619e7c7 | 7879 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7880 | PPC_TPREL16_LO which is at low-order half-word. */ |
7881 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7882 | } |
7883 | break; | |
7884 | ||
7885 | case R_PPC_GOT_TLSGD16_HI: | |
7886 | case R_PPC_GOT_TLSGD16_HA: | |
7887 | tls_gd = TLS_TPRELGD; | |
e054468f | 7888 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7889 | goto tls_gdld_hi; |
7890 | break; | |
7891 | ||
7892 | case R_PPC_GOT_TLSLD16_HI: | |
7893 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7894 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7895 | { |
7896 | tls_gdld_hi: | |
7897 | if ((tls_mask & tls_gd) != 0) | |
7898 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7899 | + R_PPC_GOT_TPREL16); | |
7900 | else | |
7901 | { | |
4fe5ca5b | 7902 | rel->r_offset -= d_offset; |
95f0d0d2 | 7903 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7904 | r_type = R_PPC_NONE; |
7905 | } | |
7906 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7907 | } | |
7908 | break; | |
7909 | ||
7910 | case R_PPC_GOT_TLSGD16: | |
7911 | case R_PPC_GOT_TLSGD16_LO: | |
7912 | tls_gd = TLS_TPRELGD; | |
e054468f | 7913 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7914 | goto tls_ldgd_opt; |
7619e7c7 AM |
7915 | break; |
7916 | ||
7917 | case R_PPC_GOT_TLSLD16: | |
7918 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7919 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7920 | { |
3a71aa26 | 7921 | unsigned int insn1, insn2; |
b7fcf6f6 | 7922 | bfd_vma offset; |
7619e7c7 | 7923 | |
b7fcf6f6 | 7924 | tls_ldgd_opt: |
727fc41e AM |
7925 | offset = (bfd_vma) -1; |
7926 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7927 | __tls_get_addr calls, we must trust that the call | |
7928 | stays with its arg setup insns, ie. that the next | |
7929 | reloc is the __tls_get_addr call associated with | |
7930 | the current reloc. Edit both insns. */ | |
7931 | if (input_section->has_tls_get_addr_call | |
7932 | && rel + 1 < relend | |
7933 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7934 | htab->tls_get_addr)) | |
7935 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7936 | /* We read the low GOT_TLS insn because we need to keep |
7937 | the destination reg. It may be something other than | |
7938 | the usual r3, and moved to r3 before the call by | |
7939 | intervening code. */ | |
95f0d0d2 | 7940 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 7941 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7942 | if ((tls_mask & tls_gd) != 0) |
7943 | { | |
7944 | /* IE */ | |
b86ac8e3 | 7945 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 7946 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
7947 | if (offset != (bfd_vma) -1) |
7948 | { | |
f58d5a2d | 7949 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e | 7950 | insn2 = 0x7c631214; /* add 3,3,2 */ |
95f0d0d2 | 7951 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7952 | } |
b7fcf6f6 AM |
7953 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7954 | + R_PPC_GOT_TPREL16); | |
7955 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7956 | } | |
7957 | else | |
7958 | { | |
7959 | /* LE */ | |
b86ac8e3 AM |
7960 | insn1 &= 0x1f << 21; |
7961 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7962 | if (tls_gd == 0) |
7963 | { | |
b7fcf6f6 | 7964 | /* Was an LD reloc. */ |
1d483afe AM |
7965 | for (r_symndx = 0; |
7966 | r_symndx < symtab_hdr->sh_info; | |
7967 | r_symndx++) | |
7968 | if (local_sections[r_symndx] == sec) | |
7969 | break; | |
7970 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7971 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7972 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7973 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7974 | rel->r_addend -= (local_syms[r_symndx].st_value |
7975 | + sec->output_offset | |
7976 | + sec->output_section->vma); | |
7619e7c7 | 7977 | } |
b7fcf6f6 AM |
7978 | r_type = R_PPC_TPREL16_HA; |
7979 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7980 | if (offset != (bfd_vma) -1) |
7981 | { | |
7982 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7983 | rel[1].r_offset = offset + d_offset; | |
7984 | rel[1].r_addend = rel->r_addend; | |
7985 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 7986 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7987 | } |
b7fcf6f6 | 7988 | } |
95f0d0d2 | 7989 | bfd_put_32 (input_bfd, insn1, |
b7fcf6f6 | 7990 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7991 | if (tls_gd == 0) |
7992 | { | |
7993 | /* We changed the symbol on an LD reloc. Start over | |
7994 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 7995 | goto again; |
7619e7c7 | 7996 | } |
252b5132 | 7997 | } |
7619e7c7 | 7998 | break; |
727fc41e AM |
7999 | |
8000 | case R_PPC_TLSGD: | |
e054468f | 8001 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
727fc41e AM |
8002 | { |
8003 | unsigned int insn2; | |
8004 | bfd_vma offset = rel->r_offset; | |
8005 | ||
8006 | if ((tls_mask & TLS_TPRELGD) != 0) | |
8007 | { | |
8008 | /* IE */ | |
8009 | r_type = R_PPC_NONE; | |
8010 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
8011 | } | |
8012 | else | |
8013 | { | |
8014 | /* LE */ | |
8015 | r_type = R_PPC_TPREL16_LO; | |
8016 | rel->r_offset += d_offset; | |
8017 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8018 | } | |
8019 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
95f0d0d2 | 8020 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
8021 | /* Zap the reloc on the _tls_get_addr call too. */ |
8022 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 8023 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
8024 | } |
8025 | break; | |
8026 | ||
8027 | case R_PPC_TLSLD: | |
e054468f | 8028 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
727fc41e AM |
8029 | { |
8030 | unsigned int insn2; | |
8031 | ||
8032 | for (r_symndx = 0; | |
8033 | r_symndx < symtab_hdr->sh_info; | |
8034 | r_symndx++) | |
8035 | if (local_sections[r_symndx] == sec) | |
8036 | break; | |
8037 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 8038 | r_symndx = STN_UNDEF; |
727fc41e | 8039 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 8040 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
8041 | rel->r_addend -= (local_syms[r_symndx].st_value |
8042 | + sec->output_offset | |
8043 | + sec->output_section->vma); | |
8044 | ||
8045 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8046 | rel->r_offset += d_offset; | |
8047 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 8048 | bfd_put_32 (input_bfd, insn2, |
727fc41e AM |
8049 | contents + rel->r_offset - d_offset); |
8050 | /* Zap the reloc on the _tls_get_addr call too. */ | |
8051 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 8052 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 8053 | goto again; |
727fc41e AM |
8054 | } |
8055 | break; | |
7619e7c7 AM |
8056 | } |
8057 | ||
8058 | /* Handle other relocations that tweak non-addend part of insn. */ | |
8059 | branch_bit = 0; | |
8060 | switch (r_type) | |
8061 | { | |
8062 | default: | |
8063 | break; | |
8064 | ||
8065 | /* Branch taken prediction relocations. */ | |
8066 | case R_PPC_ADDR14_BRTAKEN: | |
8067 | case R_PPC_REL14_BRTAKEN: | |
8068 | branch_bit = BRANCH_PREDICT_BIT; | |
1a0670f3 | 8069 | /* Fall through. */ |
7619e7c7 | 8070 | |
4cc11e76 | 8071 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
8072 | case R_PPC_ADDR14_BRNTAKEN: |
8073 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a NC |
8074 | { |
8075 | bfd_vma insn; | |
7619e7c7 | 8076 | |
95f0d0d2 | 8077 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
91d6fa6a NC |
8078 | insn &= ~BRANCH_PREDICT_BIT; |
8079 | insn |= branch_bit; | |
7619e7c7 | 8080 | |
91d6fa6a NC |
8081 | from = (rel->r_offset |
8082 | + input_section->output_offset | |
8083 | + input_section->output_section->vma); | |
7619e7c7 | 8084 | |
91d6fa6a NC |
8085 | /* Invert 'y' bit if not the default. */ |
8086 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8087 | insn ^= BRANCH_PREDICT_BIT; | |
8088 | ||
95f0d0d2 | 8089 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
91d6fa6a NC |
8090 | break; |
8091 | } | |
252b5132 RH |
8092 | } |
8093 | ||
d3e454b9 AM |
8094 | if (ELIMINATE_COPY_RELOCS |
8095 | && h != NULL | |
8096 | && !h->def_regular | |
8097 | && h->protected_def | |
8098 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
8099 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
8100 | && htab->params->pic_fixup > 0) | |
8101 | { | |
8102 | /* Convert lis;addi or lis;load/store accessing a protected | |
8103 | variable defined in a shared library to PIC. */ | |
8104 | unsigned int insn; | |
8105 | ||
8106 | if (r_type == R_PPC_ADDR16_HA) | |
8107 | { | |
95f0d0d2 | 8108 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8109 | contents + rel->r_offset - d_offset); |
8110 | if ((insn & (0x3f << 26)) == (15u << 26) | |
8111 | && (insn & (0x1f << 16)) == 0 /* lis */) | |
8112 | { | |
8113 | bfd_byte *p; | |
8114 | bfd_vma off; | |
8115 | bfd_vma got_addr; | |
8116 | ||
8117 | p = (contents + input_section->size | |
8118 | - relax_info->workaround_size | |
8119 | - relax_info->picfixup_size | |
8120 | + picfixup_size); | |
8121 | off = (p - contents) - (rel->r_offset - d_offset); | |
8122 | if (off > 0x1fffffc || (off & 3) != 0) | |
8123 | info->callbacks->einfo | |
174d0a74 | 8124 | (_("%H: fixup branch overflow\n"), |
d3e454b9 AM |
8125 | input_bfd, input_section, rel->r_offset); |
8126 | ||
95f0d0d2 | 8127 | bfd_put_32 (input_bfd, B | off, |
d3e454b9 | 8128 | contents + rel->r_offset - d_offset); |
ce558b89 AM |
8129 | got_addr = (htab->elf.sgot->output_section->vma |
8130 | + htab->elf.sgot->output_offset | |
d3e454b9 | 8131 | + (h->got.offset & ~1)); |
c316a17c AM |
8132 | wrel->r_offset = (p - contents) + d_offset; |
8133 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
8134 | wrel->r_addend = got_addr; | |
d3e454b9 | 8135 | insn &= ~0xffff; |
4aef7643 | 8136 | insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff; |
95f0d0d2 | 8137 | bfd_put_32 (input_bfd, insn, p); |
d3e454b9 AM |
8138 | |
8139 | /* Convert lis to lwz, loading address from GOT. */ | |
8140 | insn &= ~0xffff; | |
8141 | insn ^= (32u ^ 15u) << 26; | |
8142 | insn |= (insn & (0x1f << 21)) >> 5; | |
8143 | insn |= got_addr & 0xffff; | |
95f0d0d2 | 8144 | bfd_put_32 (input_bfd, insn, p + 4); |
d3e454b9 | 8145 | |
95f0d0d2 | 8146 | bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); |
d3e454b9 AM |
8147 | picfixup_size += 12; |
8148 | ||
8149 | /* Use one of the spare relocs, so --emit-relocs | |
8150 | output is reasonable. */ | |
8151 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
8152 | wrel++, rel++; |
8153 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 8154 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 8155 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
8156 | |
8157 | /* Continue on as if we had a got reloc, to output | |
8158 | dynamic reloc. */ | |
8159 | r_type = R_PPC_GOT16_LO; | |
8160 | } | |
8161 | else | |
2c4d9cbe | 8162 | _bfd_error_handler |
695344c0 | 8163 | /* xgettext:c-format */ |
2dcf00ce AM |
8164 | (_("%pB(%pA+%#" PRIx64 "): error: " |
8165 | "%s with unexpected instruction %#x"), | |
8166 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
8167 | "R_PPC_ADDR16_HA", insn); |
8168 | } | |
8169 | else if (r_type == R_PPC_ADDR16_LO) | |
8170 | { | |
95f0d0d2 | 8171 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8172 | contents + rel->r_offset - d_offset); |
8173 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8174 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8175 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8176 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8177 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8178 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8179 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8180 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8181 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8182 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8183 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8184 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8185 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8186 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8187 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8188 | && (insn & 3) != 1) | |
8189 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8190 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
8191 | { | |
8192 | /* Arrange to apply the reloc addend, if any. */ | |
8193 | relocation = 0; | |
8194 | unresolved_reloc = FALSE; | |
8195 | rel->r_info = ELF32_R_INFO (0, r_type); | |
8196 | } | |
8197 | else | |
2c4d9cbe | 8198 | _bfd_error_handler |
695344c0 | 8199 | /* xgettext:c-format */ |
2dcf00ce AM |
8200 | (_("%pB(%pA+%#" PRIx64 "): error: " |
8201 | "%s with unexpected instruction %#x"), | |
8202 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
8203 | "R_PPC_ADDR16_LO", insn); |
8204 | } | |
8205 | } | |
8206 | ||
e054468f | 8207 | ifunc = NULL; |
25f23106 | 8208 | if (!htab->is_vxworks) |
e054468f | 8209 | { |
de972ffa AM |
8210 | struct plt_entry *ent; |
8211 | ||
e054468f AM |
8212 | if (h != NULL) |
8213 | { | |
8214 | if (h->type == STT_GNU_IFUNC) | |
8215 | ifunc = &h->plt.plist; | |
8216 | } | |
de972ffa AM |
8217 | else if (local_got_offsets != NULL |
8218 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 8219 | { |
de972ffa | 8220 | struct plt_entry **local_plt; |
e054468f | 8221 | |
de972ffa AM |
8222 | local_plt = (struct plt_entry **) (local_got_offsets |
8223 | + symtab_hdr->sh_info); | |
8224 | ifunc = local_plt + r_symndx; | |
e054468f | 8225 | } |
e054468f | 8226 | |
de972ffa AM |
8227 | ent = NULL; |
8228 | if (ifunc != NULL | |
0e1862bb | 8229 | && (!bfd_link_pic (info) |
de972ffa AM |
8230 | || is_branch_reloc (r_type))) |
8231 | { | |
8232 | addend = 0; | |
0e1862bb | 8233 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info)) |
de972ffa AM |
8234 | addend = rel->r_addend; |
8235 | ent = find_plt_ent (ifunc, got2, addend); | |
8236 | } | |
8237 | if (ent != NULL) | |
8238 | { | |
888a7fc3 AM |
8239 | if (bfd_link_pic (info) |
8240 | && ent->sec != got2 | |
8241 | && htab->plt_type != PLT_NEW | |
8242 | && (!htab->elf.dynamic_sections_created | |
8243 | || h == NULL | |
8244 | || h->dynindx == -1)) | |
8245 | { | |
8246 | /* Uh oh, we are going to create a pic glink stub | |
8247 | for an ifunc (here for h == NULL and later in | |
8248 | finish_dynamic_symbol for h != NULL), and | |
8249 | apparently are using code compiled with | |
8250 | -mbss-plt. The difficulty is that -mbss-plt code | |
8251 | gives no indication via a magic PLTREL24 addend | |
8252 | whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or | |
8253 | is pointing into a .got2 section (and how far | |
8254 | into .got2). */ | |
8255 | info->callbacks->einfo | |
695344c0 | 8256 | /* xgettext:c-format */ |
174d0a74 | 8257 | (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"), |
888a7fc3 AM |
8258 | input_bfd, input_section, rel->r_offset, sym_name); |
8259 | } | |
e054468f AM |
8260 | if (h == NULL && (ent->plt.offset & 1) == 0) |
8261 | { | |
8262 | Elf_Internal_Rela rela; | |
8263 | bfd_byte *loc; | |
8264 | ||
ce558b89 AM |
8265 | rela.r_offset = (htab->elf.iplt->output_section->vma |
8266 | + htab->elf.iplt->output_offset | |
e054468f AM |
8267 | + ent->plt.offset); |
8268 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8269 | rela.r_addend = relocation; | |
ce558b89 AM |
8270 | loc = htab->elf.irelplt->contents; |
8271 | loc += (htab->elf.irelplt->reloc_count++ | |
25f23106 | 8272 | * sizeof (Elf32_External_Rela)); |
e054468f | 8273 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
82e66161 | 8274 | htab->local_ifunc_resolver = 1; |
e054468f AM |
8275 | |
8276 | ent->plt.offset |= 1; | |
8277 | } | |
8278 | if (h == NULL && (ent->glink_offset & 1) == 0) | |
8279 | { | |
a7f2871e AM |
8280 | unsigned char *p = ((unsigned char *) htab->glink->contents |
8281 | + ent->glink_offset); | |
9e390558 AM |
8282 | |
8283 | write_glink_stub (NULL, ent, htab->elf.iplt, p, info); | |
e054468f AM |
8284 | ent->glink_offset |= 1; |
8285 | } | |
8286 | ||
8287 | unresolved_reloc = FALSE; | |
8288 | if (htab->plt_type == PLT_NEW | |
8289 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
8290 | || h == NULL |
8291 | || h->dynindx == -1) | |
e054468f AM |
8292 | relocation = (htab->glink->output_section->vma |
8293 | + htab->glink->output_offset | |
8294 | + (ent->glink_offset & ~1)); | |
8295 | else | |
ce558b89 AM |
8296 | relocation = (htab->elf.splt->output_section->vma |
8297 | + htab->elf.splt->output_offset | |
e054468f AM |
8298 | + ent->plt.offset); |
8299 | } | |
8300 | } | |
8301 | ||
7619e7c7 | 8302 | addend = rel->r_addend; |
7619e7c7 | 8303 | howto = NULL; |
55fd94b0 AM |
8304 | if (r_type < R_PPC_max) |
8305 | howto = ppc_elf_howto_table[r_type]; | |
9a23f96e AM |
8306 | |
8307 | switch (r_type) | |
8308 | { | |
8309 | default: | |
8310 | break; | |
8311 | ||
8312 | case R_PPC_TPREL16_HA: | |
8313 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8314 | { | |
8315 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8316 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8317 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8318 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
8319 | /* xgettext:c-format */ | |
8320 | info->callbacks->minfo | |
8321 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8322 | input_bfd, input_section, rel->r_offset, howto->name, insn); | |
8323 | else | |
8324 | bfd_put_32 (input_bfd, NOP, p); | |
8325 | } | |
8326 | break; | |
8327 | ||
8328 | case R_PPC_TPREL16_LO: | |
8329 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8330 | { | |
8331 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8332 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8333 | insn &= ~(0x1f << 16); | |
8334 | insn |= 2 << 16; | |
8335 | bfd_put_32 (input_bfd, insn, p); | |
8336 | } | |
8337 | break; | |
8338 | } | |
8339 | ||
8340 | tls_type = 0; | |
7619e7c7 | 8341 | switch (r_type) |
252b5132 RH |
8342 | { |
8343 | default: | |
25f53a85 | 8344 | info->callbacks->einfo |
695344c0 | 8345 | /* xgettext:c-format */ |
871b3ab2 | 8346 | (_("%P: %pB: unknown relocation type %d for symbol %s\n"), |
d003868e | 8347 | input_bfd, (int) r_type, sym_name); |
252b5132 RH |
8348 | |
8349 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8350 | ret = FALSE; |
c316a17c | 8351 | goto copy_reloc; |
252b5132 | 8352 | |
7619e7c7 AM |
8353 | case R_PPC_NONE: |
8354 | case R_PPC_TLS: | |
727fc41e AM |
8355 | case R_PPC_TLSGD: |
8356 | case R_PPC_TLSLD: | |
7619e7c7 AM |
8357 | case R_PPC_EMB_MRKREF: |
8358 | case R_PPC_GNU_VTINHERIT: | |
8359 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 8360 | goto copy_reloc; |
7595d193 | 8361 | |
7619e7c7 AM |
8362 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
8363 | address in the GOT as relocation value instead of the | |
8364 | symbol's value itself. Also, create a GOT entry for the | |
8365 | symbol and put the symbol value there. */ | |
8366 | case R_PPC_GOT_TLSGD16: | |
8367 | case R_PPC_GOT_TLSGD16_LO: | |
8368 | case R_PPC_GOT_TLSGD16_HI: | |
8369 | case R_PPC_GOT_TLSGD16_HA: | |
8370 | tls_type = TLS_TLS | TLS_GD; | |
8371 | goto dogot; | |
8372 | ||
8373 | case R_PPC_GOT_TLSLD16: | |
8374 | case R_PPC_GOT_TLSLD16_LO: | |
8375 | case R_PPC_GOT_TLSLD16_HI: | |
8376 | case R_PPC_GOT_TLSLD16_HA: | |
8377 | tls_type = TLS_TLS | TLS_LD; | |
8378 | goto dogot; | |
8379 | ||
8380 | case R_PPC_GOT_TPREL16: | |
8381 | case R_PPC_GOT_TPREL16_LO: | |
8382 | case R_PPC_GOT_TPREL16_HI: | |
8383 | case R_PPC_GOT_TPREL16_HA: | |
8384 | tls_type = TLS_TLS | TLS_TPREL; | |
8385 | goto dogot; | |
8386 | ||
8387 | case R_PPC_GOT_DTPREL16: | |
8388 | case R_PPC_GOT_DTPREL16_LO: | |
8389 | case R_PPC_GOT_DTPREL16_HI: | |
8390 | case R_PPC_GOT_DTPREL16_HA: | |
8391 | tls_type = TLS_TLS | TLS_DTPREL; | |
8392 | goto dogot; | |
8393 | ||
8394 | case R_PPC_GOT16: | |
8395 | case R_PPC_GOT16_LO: | |
8396 | case R_PPC_GOT16_HI: | |
8397 | case R_PPC_GOT16_HA: | |
727fc41e | 8398 | tls_mask = 0; |
7619e7c7 AM |
8399 | dogot: |
8400 | { | |
8401 | /* Relocation is to the entry for this symbol in the global | |
8402 | offset table. */ | |
8403 | bfd_vma off; | |
8404 | bfd_vma *offp; | |
8405 | unsigned long indx; | |
8406 | ||
ce558b89 | 8407 | if (htab->elf.sgot == NULL) |
7619e7c7 AM |
8408 | abort (); |
8409 | ||
8410 | indx = 0; | |
8411 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 8412 | && (h == NULL |
f5385ebf | 8413 | || !h->def_dynamic)) |
7619e7c7 AM |
8414 | offp = &htab->tlsld_got.offset; |
8415 | else if (h != NULL) | |
8416 | { | |
f0158f44 AM |
8417 | if (!htab->elf.dynamic_sections_created |
8418 | || h->dynindx == -1 | |
8419 | || SYMBOL_REFERENCES_LOCAL (info, h) | |
21d68fcd | 8420 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7619e7c7 AM |
8421 | /* This is actually a static link, or it is a |
8422 | -Bsymbolic link and the symbol is defined | |
8423 | locally, or the symbol was forced to be local | |
8424 | because of a version file. */ | |
8425 | ; | |
8426 | else | |
8427 | { | |
8428 | indx = h->dynindx; | |
8429 | unresolved_reloc = FALSE; | |
8430 | } | |
8431 | offp = &h->got.offset; | |
8432 | } | |
8433 | else | |
8434 | { | |
8435 | if (local_got_offsets == NULL) | |
8436 | abort (); | |
8437 | offp = &local_got_offsets[r_symndx]; | |
8438 | } | |
8439 | ||
8440 | /* The offset must always be a multiple of 4. We use the | |
8441 | least significant bit to record whether we have already | |
8442 | processed this entry. */ | |
8443 | off = *offp; | |
8444 | if ((off & 1) != 0) | |
8445 | off &= ~1; | |
8446 | else | |
8447 | { | |
70bccea4 AM |
8448 | unsigned int tls_m = (tls_mask |
8449 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
8450 | | TLS_TPREL | TLS_TPRELGD)); | |
8451 | ||
8452 | if (offp == &htab->tlsld_got.offset) | |
8453 | tls_m = TLS_LD; | |
8454 | else if (h == NULL | |
f5385ebf | 8455 | || !h->def_dynamic) |
70bccea4 AM |
8456 | tls_m &= ~TLS_LD; |
8457 | ||
8458 | /* We might have multiple got entries for this sym. | |
8459 | Initialize them all. */ | |
8460 | do | |
7619e7c7 | 8461 | { |
70bccea4 AM |
8462 | int tls_ty = 0; |
8463 | ||
8464 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 8465 | { |
70bccea4 AM |
8466 | tls_ty = TLS_TLS | TLS_LD; |
8467 | tls_m &= ~TLS_LD; | |
8468 | } | |
8469 | else if ((tls_m & TLS_GD) != 0) | |
8470 | { | |
8471 | tls_ty = TLS_TLS | TLS_GD; | |
8472 | tls_m &= ~TLS_GD; | |
8473 | } | |
8474 | else if ((tls_m & TLS_DTPREL) != 0) | |
8475 | { | |
8476 | tls_ty = TLS_TLS | TLS_DTPREL; | |
8477 | tls_m &= ~TLS_DTPREL; | |
8478 | } | |
8479 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
8480 | { | |
8481 | tls_ty = TLS_TLS | TLS_TPREL; | |
8482 | tls_m = 0; | |
7619e7c7 | 8483 | } |
7619e7c7 | 8484 | |
70bccea4 | 8485 | /* Generate relocs for the dynamic linker. */ |
f0158f44 AM |
8486 | if (indx != 0 |
8487 | || (bfd_link_pic (info) | |
8488 | && (h == NULL | |
21d68fcd | 8489 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
f15d0b54 AM |
8490 | || offp == &htab->tlsld_got.offset) |
8491 | && !(tls_ty == (TLS_TLS | TLS_TPREL) | |
8492 | && bfd_link_executable (info) | |
8493 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
7619e7c7 | 8494 | { |
ce558b89 | 8495 | asection *rsec = htab->elf.srelgot; |
91d6fa6a | 8496 | bfd_byte * loc; |
91e21fb7 | 8497 | |
0bed072f | 8498 | if (ifunc != NULL) |
82e66161 AM |
8499 | { |
8500 | rsec = htab->elf.irelplt; | |
8501 | if (indx == 0) | |
8502 | htab->local_ifunc_resolver = 1; | |
8503 | else if (is_static_defined (h)) | |
8504 | htab->maybe_local_ifunc_resolver = 1; | |
8505 | } | |
ce558b89 AM |
8506 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
8507 | + htab->elf.sgot->output_offset | |
70bccea4 | 8508 | + off); |
e515b051 | 8509 | outrel.r_addend = 0; |
70bccea4 AM |
8510 | if (tls_ty & (TLS_LD | TLS_GD)) |
8511 | { | |
8512 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
8513 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8514 | { | |
25f23106 AM |
8515 | loc = rsec->contents; |
8516 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8517 | * sizeof (Elf32_External_Rela)); |
8518 | bfd_elf32_swap_reloca_out (output_bfd, | |
8519 | &outrel, loc); | |
e515b051 | 8520 | outrel.r_offset += 4; |
70bccea4 AM |
8521 | outrel.r_info |
8522 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
8523 | } |
8524 | } | |
8525 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
8526 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
8527 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8528 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 8529 | else if (indx != 0) |
70bccea4 | 8530 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
8531 | else if (ifunc != NULL) |
8532 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8533 | else | |
8534 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 8535 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
8536 | { |
8537 | outrel.r_addend += relocation; | |
8538 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
8539 | { |
8540 | if (htab->elf.tls_sec == NULL) | |
8541 | outrel.r_addend = 0; | |
8542 | else | |
8543 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
8544 | } | |
e515b051 | 8545 | } |
25f23106 AM |
8546 | loc = rsec->contents; |
8547 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8548 | * sizeof (Elf32_External_Rela)); |
8549 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
8550 | } |
8551 | ||
70bccea4 AM |
8552 | /* Init the .got section contents if we're not |
8553 | emitting a reloc. */ | |
8554 | else | |
7619e7c7 | 8555 | { |
70bccea4 AM |
8556 | bfd_vma value = relocation; |
8557 | ||
f0158f44 | 8558 | if (tls_ty != 0) |
70bccea4 | 8559 | { |
989f9879 AM |
8560 | if (htab->elf.tls_sec == NULL) |
8561 | value = 0; | |
8562 | else | |
8563 | { | |
f0158f44 AM |
8564 | if (tls_ty & TLS_LD) |
8565 | value = 0; | |
8566 | else | |
8567 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 8568 | if (tls_ty & TLS_TPREL) |
989f9879 AM |
8569 | value += DTP_OFFSET - TP_OFFSET; |
8570 | } | |
70bccea4 | 8571 | |
f0158f44 | 8572 | if (tls_ty & (TLS_LD | TLS_GD)) |
7b609f53 | 8573 | { |
95f0d0d2 | 8574 | bfd_put_32 (input_bfd, value, |
ce558b89 | 8575 | htab->elf.sgot->contents + off + 4); |
676ee2b5 | 8576 | value = 1; |
7b609f53 | 8577 | } |
70bccea4 | 8578 | } |
95f0d0d2 | 8579 | bfd_put_32 (input_bfd, value, |
ce558b89 | 8580 | htab->elf.sgot->contents + off); |
7619e7c7 | 8581 | } |
70bccea4 AM |
8582 | |
8583 | off += 4; | |
8584 | if (tls_ty & (TLS_LD | TLS_GD)) | |
8585 | off += 4; | |
7619e7c7 | 8586 | } |
70bccea4 AM |
8587 | while (tls_m != 0); |
8588 | ||
8589 | off = *offp; | |
8590 | *offp = off | 1; | |
7619e7c7 AM |
8591 | } |
8592 | ||
8593 | if (off >= (bfd_vma) -2) | |
8594 | abort (); | |
8595 | ||
70bccea4 AM |
8596 | if ((tls_type & TLS_TLS) != 0) |
8597 | { | |
8598 | if (tls_type != (TLS_TLS | TLS_LD)) | |
8599 | { | |
8600 | if ((tls_mask & TLS_LD) != 0 | |
8601 | && !(h == NULL | |
f5385ebf | 8602 | || !h->def_dynamic)) |
70bccea4 AM |
8603 | off += 8; |
8604 | if (tls_type != (TLS_TLS | TLS_GD)) | |
8605 | { | |
8606 | if ((tls_mask & TLS_GD) != 0) | |
8607 | off += 8; | |
8608 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
8609 | { | |
8610 | if ((tls_mask & TLS_DTPREL) != 0) | |
8611 | off += 4; | |
8612 | } | |
8613 | } | |
8614 | } | |
8615 | } | |
8616 | ||
d3e454b9 AM |
8617 | /* If here for a picfixup, we're done. */ |
8618 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 8619 | goto copy_reloc; |
d3e454b9 | 8620 | |
ce558b89 AM |
8621 | relocation = (htab->elf.sgot->output_section->vma |
8622 | + htab->elf.sgot->output_offset | |
e87d4038 AM |
8623 | + off |
8624 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
8625 | |
8626 | /* Addends on got relocations don't make much sense. | |
8627 | x+off@got is actually x@got+off, and since the got is | |
8628 | generated by a hash table traversal, the value in the | |
8629 | got at entry m+n bears little relation to the entry m. */ | |
8630 | if (addend != 0) | |
25f53a85 | 8631 | info->callbacks->einfo |
695344c0 | 8632 | /* xgettext:c-format */ |
174d0a74 | 8633 | (_("%H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 8634 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 8635 | howto->name, |
7619e7c7 AM |
8636 | sym_name); |
8637 | } | |
86c95733 | 8638 | break; |
7619e7c7 | 8639 | |
86c95733 | 8640 | /* Relocations that need no special processing. */ |
7619e7c7 | 8641 | case R_PPC_LOCAL24PC: |
252b5132 RH |
8642 | /* It makes no sense to point a local relocation |
8643 | at a symbol not in this object. */ | |
7b609f53 | 8644 | if (unresolved_reloc) |
252b5132 | 8645 | { |
1a72702b AM |
8646 | (*info->callbacks->undefined_symbol) (info, |
8647 | h->root.root.string, | |
8648 | input_bfd, | |
8649 | input_section, | |
8650 | rel->r_offset, | |
8651 | TRUE); | |
c316a17c | 8652 | goto copy_reloc; |
252b5132 | 8653 | } |
888a7fc3 AM |
8654 | if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info)) |
8655 | { | |
8656 | /* @local on an ifunc does not really make sense since | |
8657 | the ifunc resolver can take you anywhere. More | |
8658 | seriously, calls to ifuncs must go through a plt call | |
8659 | stub, and for pic the plt call stubs uses r30 to | |
8660 | access the PLT. The problem is that a call that is | |
8661 | local won't have the +32k reloc addend trick marking | |
8662 | -fPIC code, so the linker won't know whether r30 is | |
8663 | _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */ | |
695344c0 | 8664 | /* xgettext:c-format */ |
174d0a74 | 8665 | info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"), |
888a7fc3 AM |
8666 | input_bfd, input_section, rel->r_offset, |
8667 | h->root.root.string); | |
8668 | } | |
252b5132 RH |
8669 | break; |
8670 | ||
7619e7c7 AM |
8671 | case R_PPC_DTPREL16: |
8672 | case R_PPC_DTPREL16_LO: | |
8673 | case R_PPC_DTPREL16_HI: | |
8674 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8675 | if (htab->elf.tls_sec != NULL) |
8676 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8677 | break; |
8678 | ||
70bccea4 AM |
8679 | /* Relocations that may need to be propagated if this is a shared |
8680 | object. */ | |
7619e7c7 AM |
8681 | case R_PPC_TPREL16: |
8682 | case R_PPC_TPREL16_LO: | |
8683 | case R_PPC_TPREL16_HI: | |
8684 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8685 | if (h != NULL |
8686 | && h->root.type == bfd_link_hash_undefweak | |
8687 | && h->dynindx == -1) | |
8688 | { | |
8689 | /* Make this relocation against an undefined weak symbol | |
8690 | resolve to zero. This is really just a tweak, since | |
8691 | code using weak externs ought to check that they are | |
8692 | defined before using them. */ | |
8693 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
95f0d0d2 | 8694 | unsigned int insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
8695 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); |
8696 | if (insn != 0) | |
95f0d0d2 | 8697 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
8698 | break; |
8699 | } | |
989f9879 AM |
8700 | if (htab->elf.tls_sec != NULL) |
8701 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 | 8702 | /* The TPREL16 relocs shouldn't really be used in shared |
7c8bbca5 AM |
8703 | libs or with non-local symbols as that will result in |
8704 | DT_TEXTREL being set, but support them anyway. */ | |
7619e7c7 AM |
8705 | goto dodyn; |
8706 | ||
8707 | case R_PPC_TPREL32: | |
989f9879 AM |
8708 | if (htab->elf.tls_sec != NULL) |
8709 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8710 | goto dodyn; |
8711 | ||
8712 | case R_PPC_DTPREL32: | |
989f9879 AM |
8713 | if (htab->elf.tls_sec != NULL) |
8714 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8715 | goto dodyn; |
8716 | ||
e515b051 AM |
8717 | case R_PPC_DTPMOD32: |
8718 | relocation = 1; | |
8719 | addend = 0; | |
8720 | goto dodyn; | |
8721 | ||
d7128ce4 AM |
8722 | case R_PPC_REL16: |
8723 | case R_PPC_REL16_LO: | |
8724 | case R_PPC_REL16_HI: | |
8725 | case R_PPC_REL16_HA: | |
a680de9a | 8726 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
8727 | break; |
8728 | ||
7619e7c7 | 8729 | case R_PPC_REL32: |
625af618 AM |
8730 | if (h == NULL || h == htab->elf.hgot) |
8731 | break; | |
8732 | /* fall through */ | |
8733 | ||
8734 | case R_PPC_ADDR32: | |
8735 | case R_PPC_ADDR16: | |
8736 | case R_PPC_ADDR16_LO: | |
8737 | case R_PPC_ADDR16_HI: | |
8738 | case R_PPC_ADDR16_HA: | |
8739 | case R_PPC_UADDR32: | |
8740 | case R_PPC_UADDR16: | |
8741 | goto dodyn; | |
8742 | ||
b9c361e0 JL |
8743 | case R_PPC_VLE_REL8: |
8744 | case R_PPC_VLE_REL15: | |
8745 | case R_PPC_VLE_REL24: | |
625af618 | 8746 | case R_PPC_REL24: |
7619e7c7 AM |
8747 | case R_PPC_REL14: |
8748 | case R_PPC_REL14_BRTAKEN: | |
8749 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8750 | /* If these relocations are not to a named symbol, they can be |
8751 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8752 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8753 | || h == htab->elf.hgot) |
252b5132 | 8754 | break; |
70bccea4 | 8755 | /* fall through */ |
252b5132 | 8756 | |
7619e7c7 | 8757 | case R_PPC_ADDR24: |
7619e7c7 AM |
8758 | case R_PPC_ADDR14: |
8759 | case R_PPC_ADDR14_BRTAKEN: | |
8760 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 8761 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
8762 | break; |
8763 | /* fall through */ | |
8764 | ||
7619e7c7 | 8765 | dodyn: |
3348747a NS |
8766 | if ((input_section->flags & SEC_ALLOC) == 0 |
8767 | || is_vxworks_tls) | |
c87b5a93 | 8768 | break; |
c87b5a93 | 8769 | |
287c7eaf AM |
8770 | if (bfd_link_pic (info) |
8771 | ? ((h == NULL | |
8772 | || ppc_elf_hash_entry (h)->dyn_relocs != NULL) | |
8773 | && ((h != NULL && pc_dynrelocs (h)) | |
8774 | || must_be_dyn_reloc (info, r_type))) | |
8775 | : (h != NULL | |
8776 | && ppc_elf_hash_entry (h)->dyn_relocs != NULL)) | |
252b5132 | 8777 | { |
0bb2d96a | 8778 | int skip; |
f95f8542 AM |
8779 | bfd_byte *loc; |
8780 | asection *sreloc; | |
82e66161 AM |
8781 | long indx = 0; |
8782 | ||
252b5132 | 8783 | #ifdef DEBUG |
55fd94b0 AM |
8784 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8785 | "create relocation for %s\n", | |
70bccea4 AM |
8786 | (h && h->root.root.string |
8787 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8788 | #endif |
8789 | ||
8790 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8791 | are copied into the output file to be resolved at run |
8792 | time. */ | |
0bb2d96a | 8793 | skip = 0; |
5b914448 AM |
8794 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8795 | input_section, | |
8796 | rel->r_offset); | |
0bb2d96a JJ |
8797 | if (outrel.r_offset == (bfd_vma) -1 |
8798 | || outrel.r_offset == (bfd_vma) -2) | |
8799 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8800 | outrel.r_offset += (input_section->output_section->vma |
8801 | + input_section->output_offset); | |
8802 | ||
8803 | if (skip) | |
8804 | memset (&outrel, 0, sizeof outrel); | |
21d68fcd | 8805 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 8806 | { |
82e66161 AM |
8807 | indx = h->dynindx; |
8808 | BFD_ASSERT (indx != -1); | |
7619e7c7 | 8809 | unresolved_reloc = FALSE; |
82e66161 | 8810 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
8811 | outrel.r_addend = rel->r_addend; |
8812 | } | |
8813 | else | |
8814 | { | |
47388f4c AM |
8815 | outrel.r_addend = relocation + rel->r_addend; |
8816 | ||
25f23106 | 8817 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8818 | { |
25f23106 AM |
8819 | if (ifunc != NULL) |
8820 | { | |
8821 | /* If we get here when building a static | |
8822 | executable, then the libc startup function | |
8823 | responsible for applying indirect function | |
8824 | relocations is going to complain about | |
8825 | the reloc type. | |
8826 | If we get here when building a dynamic | |
8827 | executable, it will be because we have | |
8828 | a text relocation. The dynamic loader | |
8829 | will set the text segment writable and | |
8830 | non-executable to apply text relocations. | |
8831 | So we'll segfault when trying to run the | |
8832 | indirection function to resolve the reloc. */ | |
25f53a85 | 8833 | info->callbacks->einfo |
695344c0 | 8834 | /* xgettext:c-format */ |
174d0a74 | 8835 | (_("%H: relocation %s for indirect " |
25f53a85 AM |
8836 | "function %s unsupported\n"), |
8837 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8838 | howto->name, |
8839 | sym_name); | |
8840 | ret = FALSE; | |
8841 | } | |
cf35638d | 8842 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8843 | ; |
252b5132 RH |
8844 | else if (sec == NULL || sec->owner == NULL) |
8845 | { | |
8846 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8847 | ret = FALSE; |
252b5132 RH |
8848 | } |
8849 | else | |
8850 | { | |
8851 | asection *osec; | |
8852 | ||
47388f4c AM |
8853 | /* We are turning this relocation into one |
8854 | against a section symbol. It would be | |
8855 | proper to subtract the symbol's value, | |
8856 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8857 | but ld.so expects buggy relocs. |
8858 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
8859 | osec = sec->output_section; |
8860 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
8861 | if (indx == 0) |
8862 | { | |
8863 | osec = htab->elf.text_index_section; | |
8864 | indx = elf_section_data (osec)->dynindx; | |
8865 | } | |
8866 | BFD_ASSERT (indx != 0); | |
252b5132 | 8867 | #ifdef DEBUG |
74541ad4 | 8868 | if (indx == 0) |
e460dd0d | 8869 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
8870 | indx, osec->name, osec->flags, |
8871 | h->root.root.string); | |
252b5132 RH |
8872 | #endif |
8873 | } | |
8874 | ||
8875 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8876 | } |
25f23106 AM |
8877 | else if (ifunc != NULL) |
8878 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8879 | else | |
8880 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8881 | } |
8882 | ||
82e66161 AM |
8883 | sreloc = elf_section_data (input_section)->sreloc; |
8884 | if (ifunc) | |
8885 | { | |
8886 | sreloc = htab->elf.irelplt; | |
8887 | if (indx == 0) | |
8888 | htab->local_ifunc_resolver = 1; | |
8889 | else if (is_static_defined (h)) | |
8890 | htab->maybe_local_ifunc_resolver = 1; | |
8891 | } | |
8892 | if (sreloc == NULL) | |
8893 | return FALSE; | |
8894 | ||
947216bf AM |
8895 | loc = sreloc->contents; |
8896 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8897 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8898 | |
2243deae | 8899 | if (skip == -1) |
c316a17c | 8900 | goto copy_reloc; |
2243deae | 8901 | |
f0158f44 AM |
8902 | /* This reloc will be computed at runtime. Clear the memory |
8903 | so that it contains a predictable value for prelink. */ | |
8904 | if (!skip) | |
2243deae L |
8905 | { |
8906 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8907 | addend = 0; | |
8908 | break; | |
8909 | } | |
252b5132 | 8910 | } |
252b5132 RH |
8911 | break; |
8912 | ||
32af9f6e AM |
8913 | case R_PPC_RELAX_PLT: |
8914 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8915 | if (h != NULL) |
8916 | { | |
32af9f6e AM |
8917 | struct plt_entry *ent; |
8918 | bfd_vma got2_addend = 0; | |
8919 | ||
8920 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8921 | { | |
0e1862bb | 8922 | if (bfd_link_pic (info)) |
32af9f6e AM |
8923 | got2_addend = addend; |
8924 | addend = 0; | |
8925 | } | |
8926 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8927 | if (htab->plt_type == PLT_NEW) |
8928 | relocation = (htab->glink->output_section->vma | |
8929 | + htab->glink->output_offset | |
8930 | + ent->glink_offset); | |
8931 | else | |
ce558b89 AM |
8932 | relocation = (htab->elf.splt->output_section->vma |
8933 | + htab->elf.splt->output_offset | |
de972ffa AM |
8934 | + ent->plt.offset); |
8935 | } | |
1a0670f3 | 8936 | /* Fall through. */ |
b4a38de6 | 8937 | |
32af9f6e | 8938 | case R_PPC_RELAX: |
9abc968f | 8939 | { |
53291d1f AM |
8940 | const int *stub; |
8941 | size_t size; | |
8942 | size_t insn_offset = rel->r_offset; | |
8943 | unsigned int insn; | |
9abc968f | 8944 | |
0e1862bb | 8945 | if (bfd_link_pic (info)) |
53291d1f AM |
8946 | { |
8947 | relocation -= (input_section->output_section->vma | |
8948 | + input_section->output_offset | |
8949 | + rel->r_offset - 4); | |
8950 | stub = shared_stub_entry; | |
95f0d0d2 AM |
8951 | bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12); |
8952 | bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8); | |
8953 | bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4); | |
53291d1f AM |
8954 | stub += 3; |
8955 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8956 | } | |
8957 | else | |
8958 | { | |
8959 | stub = stub_entry; | |
8960 | size = ARRAY_SIZE (stub_entry); | |
8961 | } | |
9abc968f | 8962 | |
9abc968f | 8963 | relocation += addend; |
0e1862bb | 8964 | if (bfd_link_relocatable (info)) |
53291d1f AM |
8965 | relocation = 0; |
8966 | ||
8967 | /* First insn is HA, second is LO. */ | |
8968 | insn = *stub++; | |
8969 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
95f0d0d2 | 8970 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8971 | insn_offset += 4; |
8972 | ||
8973 | insn = *stub++; | |
8974 | insn |= relocation & 0xffff; | |
95f0d0d2 | 8975 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8976 | insn_offset += 4; |
8977 | size -= 2; | |
8978 | ||
8979 | while (size != 0) | |
8980 | { | |
8981 | insn = *stub++; | |
8982 | --size; | |
95f0d0d2 | 8983 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8984 | insn_offset += 4; |
8985 | } | |
9bc4e62b NS |
8986 | |
8987 | /* Rewrite the reloc and convert one of the trailing nop | |
8988 | relocs to describe this relocation. */ | |
8989 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
8990 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
8991 | wrel->r_offset = rel->r_offset + d_offset; |
8992 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
8993 | wrel->r_addend = rel->r_addend; | |
8994 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
8995 | wrel++, rel++; | |
8996 | wrel->r_offset += 4; | |
8997 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 8998 | } |
8517fae7 | 8999 | continue; |
deaaf2f3 | 9000 | |
70bccea4 | 9001 | /* Indirect .sdata relocation. */ |
7619e7c7 | 9002 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 9003 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
9004 | if (!is_static_defined (htab->sdata[0].sym)) |
9005 | { | |
9006 | unresolved_reloc = TRUE; | |
9007 | break; | |
9008 | } | |
7619e7c7 | 9009 | relocation |
76750a2f AM |
9010 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
9011 | h, relocation, rel); | |
bd6c6e2b | 9012 | addend = 0; |
252b5132 RH |
9013 | break; |
9014 | ||
70bccea4 | 9015 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 9016 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 9017 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
9018 | if (!is_static_defined (htab->sdata[1].sym)) |
9019 | { | |
9020 | unresolved_reloc = TRUE; | |
9021 | break; | |
9022 | } | |
7619e7c7 | 9023 | relocation |
76750a2f AM |
9024 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
9025 | h, relocation, rel); | |
bd6c6e2b | 9026 | addend = 0; |
252b5132 RH |
9027 | break; |
9028 | ||
70bccea4 AM |
9029 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
9030 | section, not the actual VMA. This is appropriate when generating | |
9031 | an embedded ELF object, for which the .got section acts like the | |
9032 | AIX .toc section. */ | |
7619e7c7 | 9033 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
9034 | if (sec == NULL || sec->output_section == NULL) |
9035 | { | |
9036 | unresolved_reloc = TRUE; | |
9037 | break; | |
9038 | } | |
a0f49396 NC |
9039 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
9040 | ".got") == 0 | |
9041 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
9042 | ".cgot") == 0); | |
252b5132 | 9043 | |
3b4f3a11 | 9044 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
9045 | break; |
9046 | ||
7619e7c7 | 9047 | case R_PPC_PLTREL24: |
f75e0e33 AM |
9048 | if (h != NULL && ifunc == NULL) |
9049 | { | |
cbf95972 AM |
9050 | struct plt_entry *ent; |
9051 | ||
9052 | ent = find_plt_ent (&h->plt.plist, got2, | |
9053 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 | 9054 | if (ent == NULL |
ce558b89 | 9055 | || htab->elf.splt == NULL) |
f75e0e33 AM |
9056 | { |
9057 | /* We didn't make a PLT entry for this symbol. This | |
9058 | happens when statically linking PIC code, or when | |
9059 | using -Bsymbolic. */ | |
9060 | } | |
9061 | else | |
9062 | { | |
9063 | /* Relocation is to the entry for this symbol in the | |
9064 | procedure linkage table. */ | |
9065 | unresolved_reloc = FALSE; | |
9066 | if (htab->plt_type == PLT_NEW) | |
9067 | relocation = (htab->glink->output_section->vma | |
9068 | + htab->glink->output_offset | |
9069 | + ent->glink_offset); | |
9070 | else | |
ce558b89 AM |
9071 | relocation = (htab->elf.splt->output_section->vma |
9072 | + htab->elf.splt->output_offset | |
f75e0e33 AM |
9073 | + ent->plt.offset); |
9074 | } | |
9075 | } | |
252b5132 | 9076 | |
f75e0e33 AM |
9077 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
9078 | addend specifies the GOT pointer offset within .got2. | |
9079 | Don't apply it to the relocation field. */ | |
9080 | addend = 0; | |
8da6118f | 9081 | break; |
252b5132 | 9082 | |
70bccea4 | 9083 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 9084 | case R_PPC_SDAREL16: |
252b5132 RH |
9085 | { |
9086 | const char *name; | |
bd6c6e2b | 9087 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 9088 | |
bd6c6e2b AM |
9089 | if (sec == NULL |
9090 | || sec->output_section == NULL | |
9091 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9092 | { |
9093 | unresolved_reloc = TRUE; | |
9094 | break; | |
9095 | } | |
bd6c6e2b | 9096 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9097 | |
a0f49396 | 9098 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9099 | if (!(strcmp (name, ".sdata") == 0 |
9100 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 9101 | { |
25f53a85 | 9102 | info->callbacks->einfo |
695344c0 | 9103 | /* xgettext:c-format */ |
871b3ab2 | 9104 | (_("%P: %pB: the target (%s) of a %s relocation is " |
25f53a85 | 9105 | "in the wrong output section (%s)\n"), |
d003868e | 9106 | input_bfd, |
55fd94b0 AM |
9107 | sym_name, |
9108 | howto->name, | |
9109 | name); | |
252b5132 | 9110 | } |
252b5132 RH |
9111 | } |
9112 | break; | |
9113 | ||
70bccea4 | 9114 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 9115 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
9116 | { |
9117 | const char *name; | |
bd6c6e2b | 9118 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 9119 | |
bd6c6e2b AM |
9120 | if (sec == NULL |
9121 | || sec->output_section == NULL | |
9122 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9123 | { |
9124 | unresolved_reloc = TRUE; | |
9125 | break; | |
9126 | } | |
bd6c6e2b | 9127 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9128 | |
a0f49396 | 9129 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9130 | if (!(strcmp (name, ".sdata2") == 0 |
9131 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 9132 | { |
25f53a85 | 9133 | info->callbacks->einfo |
695344c0 | 9134 | /* xgettext:c-format */ |
871b3ab2 | 9135 | (_("%P: %pB: the target (%s) of a %s relocation is " |
25f53a85 | 9136 | "in the wrong output section (%s)\n"), |
d003868e | 9137 | input_bfd, |
55fd94b0 AM |
9138 | sym_name, |
9139 | howto->name, | |
9140 | name); | |
252b5132 | 9141 | } |
252b5132 RH |
9142 | } |
9143 | break; | |
9144 | ||
b9c361e0 | 9145 | case R_PPC_VLE_LO16A: |
86c95733 | 9146 | relocation = relocation + addend; |
08dc996f AM |
9147 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9148 | contents + rel->r_offset, relocation, | |
9149 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9150 | goto copy_reloc; |
b9c361e0 JL |
9151 | |
9152 | case R_PPC_VLE_LO16D: | |
86c95733 | 9153 | relocation = relocation + addend; |
08dc996f AM |
9154 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9155 | contents + rel->r_offset, relocation, | |
9156 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9157 | goto copy_reloc; |
b9c361e0 JL |
9158 | |
9159 | case R_PPC_VLE_HI16A: | |
86c95733 | 9160 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9161 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9162 | contents + rel->r_offset, relocation, | |
9163 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9164 | goto copy_reloc; |
b9c361e0 JL |
9165 | |
9166 | case R_PPC_VLE_HI16D: | |
86c95733 | 9167 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9168 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9169 | contents + rel->r_offset, relocation, | |
9170 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9171 | goto copy_reloc; |
b9c361e0 JL |
9172 | |
9173 | case R_PPC_VLE_HA16A: | |
86c95733 | 9174 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9175 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9176 | contents + rel->r_offset, relocation, | |
9177 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9178 | goto copy_reloc; |
b9c361e0 JL |
9179 | |
9180 | case R_PPC_VLE_HA16D: | |
86c95733 | 9181 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9182 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9183 | contents + rel->r_offset, relocation, | |
9184 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9185 | goto copy_reloc; |
b9c361e0 | 9186 | |
70bccea4 | 9187 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 9188 | case R_PPC_EMB_SDA21: |
b9c361e0 | 9189 | case R_PPC_VLE_SDA21: |
7619e7c7 | 9190 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 9191 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
9192 | { |
9193 | const char *name; | |
9194 | int reg; | |
86c95733 | 9195 | unsigned int insn; |
bd6c6e2b | 9196 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 9197 | |
3b4f3a11 AM |
9198 | if (sec == NULL || sec->output_section == NULL) |
9199 | { | |
9200 | unresolved_reloc = TRUE; | |
9201 | break; | |
9202 | } | |
9203 | ||
a0f49396 | 9204 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9205 | if (strcmp (name, ".sdata") == 0 |
9206 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
9207 | { |
9208 | reg = 13; | |
bd6c6e2b | 9209 | sda = htab->sdata[0].sym; |
252b5132 | 9210 | } |
93d1b056 AM |
9211 | else if (strcmp (name, ".sdata2") == 0 |
9212 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
9213 | { |
9214 | reg = 2; | |
bd6c6e2b | 9215 | sda = htab->sdata[1].sym; |
252b5132 | 9216 | } |
8da6118f KH |
9217 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
9218 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
9219 | { |
9220 | reg = 0; | |
9221 | } | |
252b5132 RH |
9222 | else |
9223 | { | |
25f53a85 | 9224 | info->callbacks->einfo |
695344c0 | 9225 | /* xgettext:c-format */ |
871b3ab2 | 9226 | (_("%P: %pB: the target (%s) of a %s relocation is " |
25f53a85 | 9227 | "in the wrong output section (%s)\n"), |
d003868e | 9228 | input_bfd, |
55fd94b0 AM |
9229 | sym_name, |
9230 | howto->name, | |
9231 | name); | |
252b5132 RH |
9232 | |
9233 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9234 | ret = FALSE; |
c316a17c | 9235 | goto copy_reloc; |
252b5132 RH |
9236 | } |
9237 | ||
bd6c6e2b AM |
9238 | if (sda != NULL) |
9239 | { | |
9240 | if (!is_static_defined (sda)) | |
9241 | { | |
9242 | unresolved_reloc = TRUE; | |
9243 | break; | |
9244 | } | |
9245 | addend -= SYM_VAL (sda); | |
9246 | } | |
9247 | ||
95f0d0d2 | 9248 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
b9c361e0 JL |
9249 | if (reg == 0 |
9250 | && (r_type == R_PPC_VLE_SDA21 | |
9251 | || r_type == R_PPC_VLE_SDA21_LO)) | |
9252 | { | |
86c95733 AM |
9253 | relocation = relocation + addend; |
9254 | addend = 0; | |
9255 | ||
9256 | /* Force e_li insn, keeping RT from original insn. */ | |
9257 | insn &= 0x1f << 21; | |
9258 | insn |= 28u << 26; | |
9259 | ||
9260 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
9261 | /* Top 4 bits of value to 17..20. */ | |
9262 | insn |= (relocation & 0xf0000) >> 5; | |
9263 | /* Next 5 bits of the value to 11..15. */ | |
9264 | insn |= (relocation & 0xf800) << 5; | |
9265 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
9266 | insn |= relocation & 0x7ff; | |
9267 | ||
95f0d0d2 | 9268 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
c3301df1 AM |
9269 | |
9270 | if (r_type == R_PPC_VLE_SDA21 | |
9271 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
9272 | goto overflow; | |
c316a17c | 9273 | goto copy_reloc; |
b9c361e0 JL |
9274 | } |
9275 | else if (r_type == R_PPC_EMB_SDA21 | |
9276 | || r_type == R_PPC_VLE_SDA21 | |
9277 | || r_type == R_PPC_VLE_SDA21_LO) | |
91d6fa6a | 9278 | { |
86c95733 | 9279 | /* Fill in register field. */ |
252b5132 | 9280 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
252b5132 | 9281 | } |
95f0d0d2 | 9282 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
9283 | } |
9284 | break; | |
9285 | ||
b9c361e0 JL |
9286 | case R_PPC_VLE_SDAREL_LO16A: |
9287 | case R_PPC_VLE_SDAREL_LO16D: | |
9288 | case R_PPC_VLE_SDAREL_HI16A: | |
9289 | case R_PPC_VLE_SDAREL_HI16D: | |
9290 | case R_PPC_VLE_SDAREL_HA16A: | |
9291 | case R_PPC_VLE_SDAREL_HA16D: | |
9292 | { | |
9293 | bfd_vma value; | |
9294 | const char *name; | |
b9c361e0 JL |
9295 | struct elf_link_hash_entry *sda = NULL; |
9296 | ||
9297 | if (sec == NULL || sec->output_section == NULL) | |
9298 | { | |
9299 | unresolved_reloc = TRUE; | |
9300 | break; | |
9301 | } | |
9302 | ||
a0f49396 | 9303 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9304 | if (strcmp (name, ".sdata") == 0 |
9305 | || strcmp (name, ".sbss") == 0) | |
5499c7c7 | 9306 | sda = htab->sdata[0].sym; |
93d1b056 AM |
9307 | else if (strcmp (name, ".sdata2") == 0 |
9308 | || strcmp (name, ".sbss2") == 0) | |
5499c7c7 | 9309 | sda = htab->sdata[1].sym; |
b9c361e0 JL |
9310 | else |
9311 | { | |
4eca0228 | 9312 | _bfd_error_handler |
695344c0 | 9313 | /* xgettext:c-format */ |
871b3ab2 | 9314 | (_("%pB: the target (%s) of a %s relocation is " |
b9c361e0 JL |
9315 | "in the wrong output section (%s)"), |
9316 | input_bfd, | |
9317 | sym_name, | |
9318 | howto->name, | |
9319 | name); | |
9320 | ||
9321 | bfd_set_error (bfd_error_bad_value); | |
9322 | ret = FALSE; | |
c316a17c | 9323 | goto copy_reloc; |
b9c361e0 JL |
9324 | } |
9325 | ||
5499c7c7 | 9326 | if (sda == NULL || !is_static_defined (sda)) |
b9c361e0 | 9327 | { |
5499c7c7 AM |
9328 | unresolved_reloc = TRUE; |
9329 | break; | |
b9c361e0 | 9330 | } |
5499c7c7 | 9331 | value = relocation + addend - SYM_VAL (sda); |
86c95733 AM |
9332 | |
9333 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
08dc996f AM |
9334 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9335 | contents + rel->r_offset, value, | |
9336 | split16a_type, | |
9337 | htab->params->vle_reloc_fixup); | |
86c95733 | 9338 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) |
08dc996f AM |
9339 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9340 | contents + rel->r_offset, value, | |
9341 | split16d_type, | |
9342 | htab->params->vle_reloc_fixup); | |
86c95733 | 9343 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) |
b9c361e0 | 9344 | { |
86c95733 | 9345 | value = value >> 16; |
08dc996f AM |
9346 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9347 | contents + rel->r_offset, value, | |
9348 | split16a_type, | |
9349 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9350 | } |
86c95733 | 9351 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 9352 | { |
86c95733 | 9353 | value = value >> 16; |
08dc996f AM |
9354 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9355 | contents + rel->r_offset, value, | |
9356 | split16d_type, | |
9357 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9358 | } |
86c95733 | 9359 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 9360 | { |
86c95733 | 9361 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9362 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9363 | contents + rel->r_offset, value, | |
9364 | split16a_type, | |
9365 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9366 | } |
86c95733 | 9367 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 9368 | { |
86c95733 | 9369 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9370 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9371 | contents + rel->r_offset, value, | |
9372 | split16d_type, | |
9373 | htab->params->vle_reloc_fixup); | |
b9c361e0 JL |
9374 | } |
9375 | } | |
c316a17c | 9376 | goto copy_reloc; |
b9c361e0 | 9377 | |
83eef883 AFB |
9378 | case R_PPC_VLE_ADDR20: |
9379 | ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation); | |
9380 | continue; | |
9381 | ||
70bccea4 | 9382 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
9383 | case R_PPC_SECTOFF: |
9384 | case R_PPC_SECTOFF_LO: | |
9385 | case R_PPC_SECTOFF_HI: | |
9386 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
9387 | if (sec == NULL || sec->output_section == NULL) |
9388 | { | |
9389 | unresolved_reloc = TRUE; | |
9390 | break; | |
9391 | } | |
252b5132 | 9392 | addend -= sec->output_section->vma; |
252b5132 RH |
9393 | break; |
9394 | ||
70bccea4 | 9395 | /* Negative relocations. */ |
7619e7c7 AM |
9396 | case R_PPC_EMB_NADDR32: |
9397 | case R_PPC_EMB_NADDR16: | |
9398 | case R_PPC_EMB_NADDR16_LO: | |
9399 | case R_PPC_EMB_NADDR16_HI: | |
9400 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 9401 | addend -= 2 * relocation; |
252b5132 RH |
9402 | break; |
9403 | ||
7619e7c7 AM |
9404 | case R_PPC_COPY: |
9405 | case R_PPC_GLOB_DAT: | |
9406 | case R_PPC_JMP_SLOT: | |
9407 | case R_PPC_RELATIVE: | |
e054468f | 9408 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
9409 | case R_PPC_PLT32: |
9410 | case R_PPC_PLTREL32: | |
9411 | case R_PPC_PLT16_LO: | |
9412 | case R_PPC_PLT16_HI: | |
9413 | case R_PPC_PLT16_HA: | |
9414 | case R_PPC_ADDR30: | |
9415 | case R_PPC_EMB_RELSEC16: | |
9416 | case R_PPC_EMB_RELST_LO: | |
9417 | case R_PPC_EMB_RELST_HI: | |
9418 | case R_PPC_EMB_RELST_HA: | |
9419 | case R_PPC_EMB_BIT_FLD: | |
25f53a85 | 9420 | info->callbacks->einfo |
695344c0 | 9421 | /* xgettext:c-format */ |
871b3ab2 | 9422 | (_("%P: %pB: relocation %s is not yet supported for symbol %s\n"), |
d003868e | 9423 | input_bfd, |
7619e7c7 AM |
9424 | howto->name, |
9425 | sym_name); | |
252b5132 RH |
9426 | |
9427 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9428 | ret = FALSE; |
c316a17c | 9429 | goto copy_reloc; |
7619e7c7 | 9430 | } |
252b5132 | 9431 | |
7619e7c7 AM |
9432 | /* Do any further special processing. */ |
9433 | switch (r_type) | |
9434 | { | |
9435 | default: | |
9436 | break; | |
9437 | ||
9438 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 9439 | case R_PPC_REL16_HA: |
a680de9a | 9440 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
9441 | case R_PPC_SECTOFF_HA: |
9442 | case R_PPC_TPREL16_HA: | |
9443 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
9444 | case R_PPC_EMB_NADDR16_HA: |
9445 | case R_PPC_EMB_RELST_HA: | |
9446 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 9447 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
9448 | 'sec' would be NULL, and we should leave the symbol |
9449 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
9450 | if (sec == NULL) |
9451 | break; | |
1a0670f3 | 9452 | /* Fall through. */ |
5c5f6e17 AM |
9453 | |
9454 | case R_PPC_PLT16_HA: | |
9455 | case R_PPC_GOT16_HA: | |
9456 | case R_PPC_GOT_TLSGD16_HA: | |
9457 | case R_PPC_GOT_TLSLD16_HA: | |
9458 | case R_PPC_GOT_TPREL16_HA: | |
9459 | case R_PPC_GOT_DTPREL16_HA: | |
9460 | /* Add 0x10000 if sign bit in 0:15 is set. | |
9461 | Bits 0:15 are not used. */ | |
9462 | addend += 0x8000; | |
7619e7c7 | 9463 | break; |
1fe532cf AM |
9464 | |
9465 | case R_PPC_ADDR16: | |
9466 | case R_PPC_ADDR16_LO: | |
9467 | case R_PPC_GOT16: | |
9468 | case R_PPC_GOT16_LO: | |
9469 | case R_PPC_SDAREL16: | |
9470 | case R_PPC_SECTOFF: | |
9471 | case R_PPC_SECTOFF_LO: | |
9472 | case R_PPC_DTPREL16: | |
9473 | case R_PPC_DTPREL16_LO: | |
9474 | case R_PPC_TPREL16: | |
9475 | case R_PPC_TPREL16_LO: | |
9476 | case R_PPC_GOT_TLSGD16: | |
9477 | case R_PPC_GOT_TLSGD16_LO: | |
9478 | case R_PPC_GOT_TLSLD16: | |
9479 | case R_PPC_GOT_TLSLD16_LO: | |
9480 | case R_PPC_GOT_DTPREL16: | |
9481 | case R_PPC_GOT_DTPREL16_LO: | |
9482 | case R_PPC_GOT_TPREL16: | |
9483 | case R_PPC_GOT_TPREL16_LO: | |
9484 | { | |
9485 | /* The 32-bit ABI lacks proper relocations to deal with | |
9486 | certain 64-bit instructions. Prevent damage to bits | |
9487 | that make up part of the insn opcode. */ | |
9488 | unsigned int insn, mask, lobit; | |
9489 | ||
95f0d0d2 | 9490 | insn = bfd_get_32 (input_bfd, |
c316a17c | 9491 | contents + rel->r_offset - d_offset); |
1fe532cf AM |
9492 | mask = 0; |
9493 | if (is_insn_ds_form (insn)) | |
9494 | mask = 3; | |
9495 | else if (is_insn_dq_form (insn)) | |
9496 | mask = 15; | |
9497 | else | |
9498 | break; | |
a680de9a PB |
9499 | relocation += addend; |
9500 | addend = insn & mask; | |
9501 | lobit = mask & relocation; | |
1fe532cf AM |
9502 | if (lobit != 0) |
9503 | { | |
a680de9a | 9504 | relocation ^= lobit; |
1fe532cf | 9505 | info->callbacks->einfo |
695344c0 | 9506 | /* xgettext:c-format */ |
174d0a74 | 9507 | (_("%H: error: %s against `%s' not a multiple of %u\n"), |
1fe532cf AM |
9508 | input_bfd, input_section, rel->r_offset, |
9509 | howto->name, sym_name, mask + 1); | |
9510 | bfd_set_error (bfd_error_bad_value); | |
9511 | ret = FALSE; | |
9512 | } | |
1fe532cf AM |
9513 | } |
9514 | break; | |
252b5132 RH |
9515 | } |
9516 | ||
252b5132 | 9517 | #ifdef DEBUG |
55fd94b0 AM |
9518 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
9519 | "offset = %ld, addend = %ld\n", | |
252b5132 | 9520 | howto->name, |
8da6118f | 9521 | (int) r_type, |
252b5132 RH |
9522 | sym_name, |
9523 | r_symndx, | |
7619e7c7 | 9524 | (long) rel->r_offset, |
8da6118f | 9525 | (long) addend); |
252b5132 RH |
9526 | #endif |
9527 | ||
7619e7c7 AM |
9528 | if (unresolved_reloc |
9529 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
9530 | && h->def_dynamic) |
9531 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
9532 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 9533 | { |
25f53a85 | 9534 | info->callbacks->einfo |
695344c0 | 9535 | /* xgettext:c-format */ |
174d0a74 | 9536 | (_("%H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 9537 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9538 | howto->name, |
7619e7c7 AM |
9539 | sym_name); |
9540 | ret = FALSE; | |
9541 | } | |
9542 | ||
86c95733 AM |
9543 | /* 16-bit fields in insns mostly have signed values, but a |
9544 | few insns have 16-bit unsigned values. Really, we should | |
9545 | have different reloc types. */ | |
9546 | if (howto->complain_on_overflow != complain_overflow_dont | |
9547 | && howto->dst_mask == 0xffff | |
9548 | && (input_section->flags & SEC_CODE) != 0) | |
9549 | { | |
9550 | enum complain_overflow complain = complain_overflow_signed; | |
9551 | ||
9552 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9553 | { | |
9554 | unsigned int insn; | |
9555 | ||
9556 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
9557 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9558 | complain = complain_overflow_bitfield; | |
9559 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9560 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9561 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9562 | complain = complain_overflow_unsigned; |
9563 | } | |
9564 | if (howto->complain_on_overflow != complain) | |
9565 | { | |
9566 | alt_howto = *howto; | |
9567 | alt_howto.complain_on_overflow = complain; | |
9568 | howto = &alt_howto; | |
9569 | } | |
9570 | } | |
9571 | ||
a680de9a PB |
9572 | if (r_type == R_PPC_REL16DX_HA) |
9573 | { | |
9574 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
9575 | if (rel->r_offset + 4 > input_section->size) | |
9576 | r = bfd_reloc_outofrange; | |
9577 | else | |
9578 | { | |
9579 | unsigned int insn; | |
9580 | ||
9581 | relocation += addend; | |
9582 | relocation -= (rel->r_offset | |
9583 | + input_section->output_offset | |
9584 | + input_section->output_section->vma); | |
9585 | relocation >>= 16; | |
9586 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9587 | insn &= ~0x1fffc1; | |
9588 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
9589 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9590 | r = bfd_reloc_ok; | |
9591 | } | |
9592 | } | |
9593 | else | |
9594 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9595 | rel->r_offset, relocation, addend); | |
252b5132 | 9596 | |
7619e7c7 | 9597 | if (r != bfd_reloc_ok) |
252b5132 | 9598 | { |
7619e7c7 | 9599 | if (r == bfd_reloc_overflow) |
252b5132 | 9600 | { |
c3301df1 | 9601 | overflow: |
8131c122 AM |
9602 | /* On code like "if (foo) foo();" don't report overflow |
9603 | on a branch to zero when foo is undefined. */ | |
9604 | if (!warned | |
9605 | && !(h != NULL | |
9606 | && (h->root.type == bfd_link_hash_undefweak | |
9607 | || h->root.type == bfd_link_hash_undefined) | |
9608 | && is_branch_reloc (r_type))) | |
1a72702b AM |
9609 | info->callbacks->reloc_overflow |
9610 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
9611 | rel->r_addend, input_bfd, input_section, rel->r_offset); | |
dc1bc0c9 RH |
9612 | } |
9613 | else | |
9614 | { | |
25f53a85 | 9615 | info->callbacks->einfo |
695344c0 | 9616 | /* xgettext:c-format */ |
174d0a74 | 9617 | (_("%H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9618 | input_bfd, input_section, rel->r_offset, |
9619 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9620 | ret = FALSE; |
252b5132 RH |
9621 | } |
9622 | } | |
c316a17c AM |
9623 | copy_reloc: |
9624 | if (wrel != rel) | |
9625 | *wrel = *rel; | |
9626 | } | |
9627 | ||
9628 | if (wrel != rel) | |
9629 | { | |
9630 | Elf_Internal_Shdr *rel_hdr; | |
9631 | size_t deleted = rel - wrel; | |
9632 | ||
9633 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
9634 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9635 | if (rel_hdr->sh_size == 0) | |
9636 | { | |
9637 | /* It is too late to remove an empty reloc section. Leave | |
9638 | one NONE reloc. | |
9639 | ??? What is wrong with an empty section??? */ | |
9640 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
9641 | deleted -= 1; | |
9642 | wrel++; | |
9643 | } | |
9644 | relend = wrel; | |
9645 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
9646 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9647 | input_section->reloc_count -= deleted; | |
252b5132 RH |
9648 | } |
9649 | ||
252b5132 RH |
9650 | #ifdef DEBUG |
9651 | fprintf (stderr, "\n"); | |
9652 | #endif | |
9653 | ||
53291d1f AM |
9654 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9655 | && input_section->size != input_section->rawsize | |
9656 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9657 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9658 | { | |
9659 | /* Branch around the trampolines. */ | |
9660 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9661 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9662 | } | |
9663 | ||
5446cbdf | 9664 | if (htab->params->ppc476_workaround |
795bc6b3 | 9665 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 9666 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
9667 | || (input_section->output_section->alignment_power |
9668 | >= htab->params->pagesize_p2))) | |
5446cbdf | 9669 | { |
5446cbdf | 9670 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 9671 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 9672 | |
5446cbdf | 9673 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
9674 | { |
9675 | bfd_byte *p; | |
9676 | unsigned int n; | |
9677 | bfd_byte fill[4]; | |
9678 | ||
9679 | bfd_put_32 (input_bfd, BA, fill); | |
9680 | p = contents + input_section->size - relax_info->workaround_size; | |
9681 | n = relax_info->workaround_size >> 2; | |
9682 | while (n--) | |
9683 | { | |
9684 | memcpy (p, fill, 4); | |
9685 | p += 4; | |
9686 | } | |
9687 | } | |
5446cbdf AM |
9688 | |
9689 | /* The idea is: Replace the last instruction on a page with a | |
9690 | branch to a patch area. Put the insn there followed by a | |
9691 | branch back to the next page. Complicated a little by | |
9692 | needing to handle moved conditional branches, and by not | |
9693 | wanting to touch data-in-text. */ | |
9694 | ||
9695 | start_addr = (input_section->output_section->vma | |
9696 | + input_section->output_offset); | |
9697 | end_addr = (start_addr + input_section->size | |
9698 | - relax_info->workaround_size); | |
9699 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9700 | addr < end_addr; | |
9701 | addr += pagesize) | |
9702 | { | |
9703 | bfd_vma offset = addr - start_addr; | |
9704 | Elf_Internal_Rela *lo, *hi; | |
9705 | bfd_boolean is_data; | |
9706 | bfd_vma patch_off, patch_addr; | |
9707 | unsigned int insn; | |
9708 | ||
9709 | /* Do we have a data reloc at this offset? If so, leave | |
9710 | the word alone. */ | |
9711 | is_data = FALSE; | |
9712 | lo = relocs; | |
668e22e5 AM |
9713 | hi = relend; |
9714 | rel = NULL; | |
5446cbdf AM |
9715 | while (lo < hi) |
9716 | { | |
9717 | rel = lo + (hi - lo) / 2; | |
9718 | if (rel->r_offset < offset) | |
9719 | lo = rel + 1; | |
668e22e5 | 9720 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9721 | hi = rel; |
9722 | else | |
9723 | { | |
9724 | switch (ELF32_R_TYPE (rel->r_info)) | |
9725 | { | |
9726 | case R_PPC_ADDR32: | |
9727 | case R_PPC_UADDR32: | |
9728 | case R_PPC_REL32: | |
9729 | case R_PPC_ADDR30: | |
9730 | is_data = TRUE; | |
9731 | break; | |
9732 | default: | |
9733 | break; | |
9734 | } | |
9735 | break; | |
9736 | } | |
9737 | } | |
9738 | if (is_data) | |
9739 | continue; | |
9740 | ||
b4ab4364 AM |
9741 | /* Some instructions can be left alone too. Unconditional |
9742 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9743 | avoid the icache failure. | |
9744 | ||
9745 | The problem occurs due to prefetch across a page boundary | |
9746 | where stale instructions can be fetched from the next | |
9747 | page, and the mechanism for flushing these bad | |
9748 | instructions fails under certain circumstances. The | |
9749 | unconditional branches: | |
9750 | 1) Branch: b, bl, ba, bla, | |
9751 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9752 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9753 | where (2) and (3) have BO=0x14 making them unconditional, | |
9754 | prevent the bad prefetch because the prefetch itself is | |
9755 | affected by these instructions. This happens even if the | |
9756 | instruction is not executed. | |
9757 | ||
9758 | A bctr example: | |
9759 | . | |
9760 | . lis 9,new_page@ha | |
9761 | . addi 9,9,new_page@l | |
9762 | . mtctr 9 | |
9763 | . bctr | |
9764 | . nop | |
9765 | . nop | |
9766 | . new_page: | |
9767 | . | |
9768 | The bctr is not predicted taken due to ctr not being | |
9769 | ready, so prefetch continues on past the bctr into the | |
9770 | new page which might have stale instructions. If they | |
9771 | fail to be flushed, then they will be executed after the | |
9772 | bctr executes. Either of the following modifications | |
9773 | prevent the bad prefetch from happening in the first | |
9774 | place: | |
9775 | . | |
1b786873 L |
9776 | . lis 9,new_page@ha lis 9,new_page@ha |
9777 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9778 | . mtctr 9 mtctr 9 | |
9779 | . bctr bctr | |
b4ab4364 | 9780 | . nop b somewhere_else |
1b786873 L |
9781 | . b somewhere_else nop |
9782 | . new_page: new_page: | |
b4ab4364 | 9783 | . */ |
5446cbdf | 9784 | insn = bfd_get_32 (input_bfd, contents + offset); |
07d6d2b8 AM |
9785 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9786 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
9787 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 9788 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 | 9789 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
07d6d2b8 | 9790 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ |
5446cbdf AM |
9791 | continue; |
9792 | ||
9793 | patch_addr = (start_addr + input_section->size | |
9794 | - relax_info->workaround_size); | |
9795 | patch_addr = (patch_addr + 15) & -16; | |
9796 | patch_off = patch_addr - start_addr; | |
9797 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9798 | |
9799 | if (rel != NULL | |
9800 | && rel->r_offset >= offset | |
9801 | && rel->r_offset < offset + 4) | |
9802 | { | |
f8b44781 AM |
9803 | asection *sreloc; |
9804 | ||
668e22e5 AM |
9805 | /* If the insn we are patching had a reloc, adjust the |
9806 | reloc r_offset so that the reloc applies to the moved | |
9807 | location. This matters for -r and --emit-relocs. */ | |
9808 | if (rel + 1 != relend) | |
9809 | { | |
9810 | Elf_Internal_Rela tmp = *rel; | |
9811 | ||
9812 | /* Keep the relocs sorted by r_offset. */ | |
9813 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9814 | relend[-1] = tmp; | |
9815 | } | |
9816 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
9817 | |
9818 | /* Adjust REL16 addends too. */ | |
9819 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
9820 | { | |
9821 | case R_PPC_REL16: | |
9822 | case R_PPC_REL16_LO: | |
9823 | case R_PPC_REL16_HI: | |
9824 | case R_PPC_REL16_HA: | |
9825 | relend[-1].r_addend += patch_off - offset; | |
9826 | break; | |
9827 | default: | |
9828 | break; | |
9829 | } | |
9830 | ||
9831 | /* If we are building a PIE or shared library with | |
9832 | non-PIC objects, perhaps we had a dynamic reloc too? | |
9833 | If so, the dynamic reloc must move with the insn. */ | |
9834 | sreloc = elf_section_data (input_section)->sreloc; | |
9835 | if (sreloc != NULL) | |
9836 | { | |
1d5c94cb | 9837 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
9838 | bfd_vma soffset; |
9839 | ||
1d5c94cb AM |
9840 | slo = (Elf32_External_Rela *) sreloc->contents; |
9841 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
9842 | soffset = (offset + input_section->output_section->vma |
9843 | + input_section->output_offset); | |
9844 | while (slo < shi) | |
9845 | { | |
1d5c94cb AM |
9846 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
9847 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
9848 | &outrel); | |
f8b44781 AM |
9849 | if (outrel.r_offset < soffset) |
9850 | slo = srel + 1; | |
9851 | else if (outrel.r_offset > soffset + 3) | |
9852 | shi = srel; | |
9853 | else | |
9854 | { | |
1d5c94cb | 9855 | if (srel + 1 != srelend) |
f8b44781 | 9856 | { |
1d5c94cb AM |
9857 | memmove (srel, srel + 1, |
9858 | (srelend - (srel + 1)) * sizeof (*srel)); | |
9859 | srel = srelend - 1; | |
f8b44781 AM |
9860 | } |
9861 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
9862 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
9863 | (bfd_byte *) srel); | |
f8b44781 AM |
9864 | break; |
9865 | } | |
9866 | } | |
9867 | } | |
668e22e5 AM |
9868 | } |
9869 | else | |
9870 | rel = NULL; | |
9871 | ||
5446cbdf AM |
9872 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
9873 | && (insn & 2) == 0 /* relative */) | |
9874 | { | |
9875 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9876 | ||
9877 | delta += offset - patch_off; | |
0e1862bb | 9878 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 9879 | delta = 0; |
0e1862bb | 9880 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
9881 | { |
9882 | enum elf_ppc_reloc_type r_type; | |
9883 | ||
9884 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9885 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9886 | insn |= BRANCH_PREDICT_BIT; | |
9887 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9888 | insn &= ~BRANCH_PREDICT_BIT; | |
9889 | else | |
9890 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9891 | ||
9892 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9893 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9894 | && delta + 0x8000 < 0x10000 | |
9895 | && (bfd_signed_vma) delta < 0) | |
9896 | insn ^= BRANCH_PREDICT_BIT; | |
9897 | } | |
5446cbdf AM |
9898 | if (delta + 0x8000 < 0x10000) |
9899 | { | |
9900 | bfd_put_32 (input_bfd, | |
9901 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9902 | contents + patch_off); | |
9903 | patch_off += 4; | |
9904 | bfd_put_32 (input_bfd, | |
9905 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9906 | contents + patch_off); | |
9907 | patch_off += 4; | |
9908 | } | |
9909 | else | |
9910 | { | |
668e22e5 AM |
9911 | if (rel != NULL) |
9912 | { | |
9913 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9914 | ||
9915 | relend[-1].r_offset += 8; | |
9916 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9917 | } | |
5446cbdf AM |
9918 | bfd_put_32 (input_bfd, |
9919 | (insn & ~0xfffc) | 8, | |
9920 | contents + patch_off); | |
9921 | patch_off += 4; | |
9922 | bfd_put_32 (input_bfd, | |
9923 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9924 | contents + patch_off); | |
9925 | patch_off += 4; | |
9926 | bfd_put_32 (input_bfd, | |
9927 | B | ((delta - 8) & 0x3fffffc), | |
9928 | contents + patch_off); | |
9929 | patch_off += 4; | |
9930 | } | |
9931 | } | |
9932 | else | |
9933 | { | |
9934 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9935 | patch_off += 4; | |
9936 | bfd_put_32 (input_bfd, | |
9937 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9938 | contents + patch_off); | |
9939 | patch_off += 4; | |
9940 | } | |
9941 | BFD_ASSERT (patch_off <= input_section->size); | |
9942 | relax_info->workaround_size = input_section->size - patch_off; | |
9943 | } | |
9944 | } | |
9945 | ||
252b5132 RH |
9946 | return ret; |
9947 | } | |
252b5132 | 9948 | \f |
25dbc73a AM |
9949 | /* Finish up dynamic symbol handling. We set the contents of various |
9950 | dynamic sections here. */ | |
c5fccbec | 9951 | |
b34976b6 | 9952 | static bfd_boolean |
25dbc73a AM |
9953 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
9954 | struct bfd_link_info *info, | |
9955 | struct elf_link_hash_entry *h, | |
9956 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 9957 | { |
25dbc73a | 9958 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
9959 | struct plt_entry *ent; |
9960 | bfd_boolean doneone; | |
e1a9cb8e | 9961 | |
25dbc73a AM |
9962 | #ifdef DEBUG |
9963 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9964 | h->root.root.string); | |
9965 | #endif | |
e1a9cb8e | 9966 | |
25dbc73a AM |
9967 | htab = ppc_elf_hash_table (info); |
9968 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 9969 | |
a6aa5195 AM |
9970 | doneone = FALSE; |
9971 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9972 | if (ent->plt.offset != (bfd_vma) -1) | |
9973 | { | |
9974 | if (!doneone) | |
9975 | { | |
9976 | Elf_Internal_Rela rela; | |
9977 | bfd_byte *loc; | |
9978 | bfd_vma reloc_index; | |
e1a9cb8e | 9979 | |
e054468f | 9980 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9981 | || !htab->elf.dynamic_sections_created |
9982 | || h->dynindx == -1) | |
9d8504b1 PB |
9983 | reloc_index = ent->plt.offset / 4; |
9984 | else | |
9985 | { | |
9986 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
9987 | / htab->plt_slot_size); | |
9988 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 9989 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
9990 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
9991 | } | |
9992 | ||
a6aa5195 AM |
9993 | /* This symbol has an entry in the procedure linkage table. |
9994 | Set it up. */ | |
e054468f | 9995 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
9996 | && htab->elf.dynamic_sections_created |
9997 | && h->dynindx != -1) | |
a6aa5195 | 9998 | { |
9d8504b1 PB |
9999 | bfd_vma got_offset; |
10000 | const bfd_vma *plt_entry; | |
5b914448 | 10001 | |
9d8504b1 PB |
10002 | /* The first three entries in .got.plt are reserved. */ |
10003 | got_offset = (reloc_index + 3) * 4; | |
10004 | ||
10005 | /* Use the right PLT. */ | |
0e1862bb | 10006 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
10007 | : ppc_elf_vxworks_plt_entry; |
10008 | ||
10009 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 10010 | if (bfd_link_pic (info)) |
9d8504b1 | 10011 | { |
9d8504b1 | 10012 | bfd_put_32 (output_bfd, |
e87d4038 | 10013 | plt_entry[0] | PPC_HA (got_offset), |
ce558b89 | 10014 | htab->elf.splt->contents + ent->plt.offset + 0); |
9d8504b1 | 10015 | bfd_put_32 (output_bfd, |
e87d4038 | 10016 | plt_entry[1] | PPC_LO (got_offset), |
ce558b89 | 10017 | htab->elf.splt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10018 | } |
10019 | else | |
10020 | { | |
e87d4038 | 10021 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 PB |
10022 | |
10023 | bfd_put_32 (output_bfd, | |
e87d4038 | 10024 | plt_entry[0] | PPC_HA (got_loc), |
ce558b89 | 10025 | htab->elf.splt->contents + ent->plt.offset + 0); |
9d8504b1 | 10026 | bfd_put_32 (output_bfd, |
e87d4038 | 10027 | plt_entry[1] | PPC_LO (got_loc), |
ce558b89 | 10028 | htab->elf.splt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10029 | } |
10030 | ||
10031 | bfd_put_32 (output_bfd, plt_entry[2], | |
ce558b89 | 10032 | htab->elf.splt->contents + ent->plt.offset + 8); |
9d8504b1 | 10033 | bfd_put_32 (output_bfd, plt_entry[3], |
ce558b89 | 10034 | htab->elf.splt->contents + ent->plt.offset + 12); |
9d8504b1 PB |
10035 | |
10036 | /* This instruction is an immediate load. The value loaded is | |
10037 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
10038 | start of the .rela.plt section. The value is stored in the | |
10039 | low-order 16 bits of the load instruction. */ | |
10040 | /* NOTE: It appears that this is now an index rather than a | |
10041 | prescaled offset. */ | |
5b914448 | 10042 | bfd_put_32 (output_bfd, |
9d8504b1 | 10043 | plt_entry[4] | reloc_index, |
ce558b89 | 10044 | htab->elf.splt->contents + ent->plt.offset + 16); |
9d8504b1 PB |
10045 | /* This instruction is a PC-relative branch whose target is |
10046 | the start of the PLT section. The address of this branch | |
10047 | instruction is 20 bytes beyond the start of this PLT entry. | |
10048 | The address is encoded in bits 6-29, inclusive. The value | |
10049 | stored is right-shifted by two bits, permitting a 26-bit | |
10050 | offset. */ | |
5b914448 AM |
10051 | bfd_put_32 (output_bfd, |
10052 | (plt_entry[5] | |
9d8504b1 | 10053 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
ce558b89 | 10054 | htab->elf.splt->contents + ent->plt.offset + 20); |
9d8504b1 | 10055 | bfd_put_32 (output_bfd, plt_entry[6], |
ce558b89 | 10056 | htab->elf.splt->contents + ent->plt.offset + 24); |
9d8504b1 | 10057 | bfd_put_32 (output_bfd, plt_entry[7], |
ce558b89 | 10058 | htab->elf.splt->contents + ent->plt.offset + 28); |
9d8504b1 PB |
10059 | |
10060 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 10061 | the address immediately after the "bctr" instruction |
9d8504b1 | 10062 | in this PLT entry. */ |
ce558b89 AM |
10063 | bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma |
10064 | + htab->elf.splt->output_offset | |
9d8504b1 | 10065 | + ent->plt.offset + 16), |
ce558b89 | 10066 | htab->elf.sgotplt->contents + got_offset); |
9d8504b1 | 10067 | |
0e1862bb | 10068 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
10069 | { |
10070 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
10071 | loc = htab->srelplt2->contents | |
10072 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
10073 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
10074 | * sizeof (Elf32_External_Rela)); | |
10075 | ||
10076 | /* Provide the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10077 | rela.r_offset = (htab->elf.splt->output_section->vma |
10078 | + htab->elf.splt->output_offset | |
9d8504b1 | 10079 | + ent->plt.offset + 2); |
636ce3f5 | 10080 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10081 | R_PPC_ADDR16_HA); |
10082 | rela.r_addend = got_offset; | |
10083 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10084 | loc += sizeof (Elf32_External_Rela); | |
10085 | ||
10086 | /* Provide the @l relocation for the second instruction. */ | |
ce558b89 AM |
10087 | rela.r_offset = (htab->elf.splt->output_section->vma |
10088 | + htab->elf.splt->output_offset | |
9d8504b1 | 10089 | + ent->plt.offset + 6); |
636ce3f5 | 10090 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10091 | R_PPC_ADDR16_LO); |
10092 | rela.r_addend = got_offset; | |
10093 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10094 | loc += sizeof (Elf32_External_Rela); | |
10095 | ||
10096 | /* Provide a relocation for the GOT entry corresponding to this | |
10097 | PLT slot. Point it at the middle of the .plt entry. */ | |
ce558b89 AM |
10098 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10099 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 10100 | + got_offset); |
7325306f | 10101 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
10102 | R_PPC_ADDR32); |
10103 | rela.r_addend = ent->plt.offset + 16; | |
10104 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10105 | } | |
10106 | ||
10107 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
10108 | In particular, the offset for the relocation is not the | |
10109 | address of the PLT entry for this function, as specified | |
10110 | by the ABI. Instead, the offset is set to the address of | |
10111 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
ce558b89 AM |
10112 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10113 | + htab->elf.sgotplt->output_offset | |
9d8504b1 PB |
10114 | + got_offset); |
10115 | ||
a6aa5195 AM |
10116 | } |
10117 | else | |
10118 | { | |
ce558b89 | 10119 | asection *splt = htab->elf.splt; |
25f23106 AM |
10120 | if (!htab->elf.dynamic_sections_created |
10121 | || h->dynindx == -1) | |
ce558b89 | 10122 | splt = htab->elf.iplt; |
e054468f AM |
10123 | |
10124 | rela.r_offset = (splt->output_section->vma | |
10125 | + splt->output_offset | |
9d8504b1 | 10126 | + ent->plt.offset); |
e054468f | 10127 | if (htab->plt_type == PLT_OLD |
25f23106 AM |
10128 | || !htab->elf.dynamic_sections_created |
10129 | || h->dynindx == -1) | |
9d8504b1 PB |
10130 | { |
10131 | /* We don't need to fill in the .plt. The ppc dynamic | |
10132 | linker will fill it in. */ | |
10133 | } | |
10134 | else | |
10135 | { | |
10136 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
10137 | + htab->glink->output_section->vma | |
10138 | + htab->glink->output_offset); | |
10139 | bfd_put_32 (output_bfd, val, | |
e054468f | 10140 | splt->contents + ent->plt.offset); |
9d8504b1 | 10141 | } |
a6aa5195 | 10142 | } |
e1a9cb8e | 10143 | |
a6aa5195 | 10144 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 | 10145 | rela.r_addend = 0; |
e054468f AM |
10146 | if (!htab->elf.dynamic_sections_created |
10147 | || h->dynindx == -1) | |
10148 | { | |
10149 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
10150 | && h->def_regular | |
10151 | && (h->root.type == bfd_link_hash_defined | |
10152 | || h->root.type == bfd_link_hash_defweak)); | |
10153 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
10154 | rela.r_addend = SYM_VAL (h); | |
10155 | } | |
10156 | else | |
10157 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
e1a9cb8e | 10158 | |
25f23106 AM |
10159 | if (!htab->elf.dynamic_sections_created |
10160 | || h->dynindx == -1) | |
82e66161 AM |
10161 | { |
10162 | loc = (htab->elf.irelplt->contents | |
10163 | + (htab->elf.irelplt->reloc_count++ | |
10164 | * sizeof (Elf32_External_Rela))); | |
10165 | htab->local_ifunc_resolver = 1; | |
10166 | } | |
e054468f | 10167 | else |
82e66161 AM |
10168 | { |
10169 | loc = (htab->elf.srelplt->contents | |
10170 | + reloc_index * sizeof (Elf32_External_Rela)); | |
10171 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
10172 | htab->maybe_local_ifunc_resolver = 1; | |
10173 | } | |
a6aa5195 | 10174 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
e1a9cb8e | 10175 | |
a6aa5195 AM |
10176 | if (!h->def_regular) |
10177 | { | |
0eb4a168 AM |
10178 | /* Mark the symbol as undefined, rather than as |
10179 | defined in the .plt section. Leave the value if | |
10180 | there were any relocations where pointer equality | |
10181 | matters (this is a clue for the dynamic linker, to | |
10182 | make function pointer comparisons work between an | |
10183 | application and shared library), otherwise set it | |
10184 | to zero. */ | |
a6aa5195 | 10185 | sym->st_shndx = SHN_UNDEF; |
0eb4a168 | 10186 | if (!h->pointer_equality_needed) |
a6aa5195 | 10187 | sym->st_value = 0; |
0eb4a168 AM |
10188 | else if (!h->ref_regular_nonweak) |
10189 | { | |
625af618 AM |
10190 | /* This breaks function pointer comparisons, but |
10191 | that is better than breaking tests for a NULL | |
0eb4a168 | 10192 | function pointer. */ |
0eb4a168 AM |
10193 | sym->st_value = 0; |
10194 | } | |
a6aa5195 | 10195 | } |
de972ffa | 10196 | else if (h->type == STT_GNU_IFUNC |
0e1862bb | 10197 | && !bfd_link_pic (info)) |
de972ffa AM |
10198 | { |
10199 | /* Set the value of ifunc symbols in a non-pie | |
10200 | executable to the glink entry. This is to avoid | |
10201 | text relocations. We can't do this for ifunc in | |
10202 | allocate_dynrelocs, as we do for normal dynamic | |
10203 | function symbols with plt entries, because we need | |
10204 | to keep the original value around for the ifunc | |
10205 | relocation. */ | |
10206 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
10207 | (output_bfd, htab->glink->output_section)); | |
5b914448 AM |
10208 | sym->st_value = (ent->glink_offset |
10209 | + htab->glink->output_offset | |
de972ffa AM |
10210 | + htab->glink->output_section->vma); |
10211 | } | |
a6aa5195 AM |
10212 | doneone = TRUE; |
10213 | } | |
e1a9cb8e | 10214 | |
e054468f | 10215 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10216 | || !htab->elf.dynamic_sections_created |
10217 | || h->dynindx == -1) | |
a6aa5195 | 10218 | { |
a7f2871e | 10219 | unsigned char *p; |
ce558b89 | 10220 | asection *splt = htab->elf.splt; |
9e390558 | 10221 | |
25f23106 AM |
10222 | if (!htab->elf.dynamic_sections_created |
10223 | || h->dynindx == -1) | |
ce558b89 | 10224 | splt = htab->elf.iplt; |
e1a9cb8e | 10225 | |
a7f2871e | 10226 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
9e390558 | 10227 | write_glink_stub (h, ent, splt, p, info); |
e1a9cb8e | 10228 | |
0e1862bb | 10229 | if (!bfd_link_pic (info)) |
e054468f AM |
10230 | /* We only need one non-PIC glink stub. */ |
10231 | break; | |
a6aa5195 AM |
10232 | } |
10233 | else | |
10234 | break; | |
10235 | } | |
e1a9cb8e | 10236 | |
25dbc73a AM |
10237 | if (h->needs_copy) |
10238 | { | |
10239 | asection *s; | |
10240 | Elf_Internal_Rela rela; | |
10241 | bfd_byte *loc; | |
e1a9cb8e | 10242 | |
25dbc73a | 10243 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 10244 | |
25dbc73a AM |
10245 | #ifdef DEBUG |
10246 | fprintf (stderr, ", copy"); | |
10247 | #endif | |
e1a9cb8e | 10248 | |
25dbc73a | 10249 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 10250 | |
4dc4a9a5 | 10251 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 10252 | s = htab->relsbss; |
afbf7e8e | 10253 | else if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f | 10254 | s = htab->elf.sreldynrelro; |
25dbc73a | 10255 | else |
9d19e4fd | 10256 | s = htab->elf.srelbss; |
25dbc73a | 10257 | BFD_ASSERT (s != NULL); |
e1a9cb8e | 10258 | |
e87d4038 | 10259 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
10260 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
10261 | rela.r_addend = 0; | |
10262 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
10263 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10264 | } | |
e1a9cb8e | 10265 | |
25dbc73a AM |
10266 | #ifdef DEBUG |
10267 | fprintf (stderr, "\n"); | |
10268 | #endif | |
e1a9cb8e | 10269 | |
25dbc73a AM |
10270 | return TRUE; |
10271 | } | |
10272 | \f | |
10273 | static enum elf_reloc_type_class | |
7e612e98 AM |
10274 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
10275 | const asection *rel_sec, | |
10276 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 10277 | { |
7e612e98 AM |
10278 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
10279 | ||
ce558b89 | 10280 | if (rel_sec == htab->elf.irelplt) |
7e612e98 AM |
10281 | return reloc_class_ifunc; |
10282 | ||
25dbc73a AM |
10283 | switch (ELF32_R_TYPE (rela->r_info)) |
10284 | { | |
10285 | case R_PPC_RELATIVE: | |
10286 | return reloc_class_relative; | |
25dbc73a AM |
10287 | case R_PPC_JMP_SLOT: |
10288 | return reloc_class_plt; | |
10289 | case R_PPC_COPY: | |
10290 | return reloc_class_copy; | |
10291 | default: | |
10292 | return reloc_class_normal; | |
10293 | } | |
e1a9cb8e | 10294 | } |
25dbc73a AM |
10295 | \f |
10296 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 10297 | |
25dbc73a AM |
10298 | static bfd_boolean |
10299 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
10300 | struct bfd_link_info *info) | |
e1a9cb8e | 10301 | { |
25dbc73a AM |
10302 | asection *sdyn; |
10303 | struct ppc_elf_link_hash_table *htab; | |
1fe44d79 | 10304 | bfd_vma got; |
e87d4038 AM |
10305 | bfd *dynobj; |
10306 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 10307 | |
25dbc73a AM |
10308 | #ifdef DEBUG |
10309 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
10310 | #endif | |
6b0817e5 | 10311 | |
25dbc73a | 10312 | htab = ppc_elf_hash_table (info); |
ce558b89 | 10313 | dynobj = htab->elf.dynobj; |
3d4d4302 | 10314 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
e1a9cb8e | 10315 | |
1fe44d79 AM |
10316 | got = 0; |
10317 | if (htab->elf.hgot != NULL) | |
e87d4038 | 10318 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 10319 | |
25dbc73a | 10320 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 10321 | { |
25dbc73a | 10322 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 10323 | |
ce558b89 | 10324 | BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL); |
86bbe32f | 10325 | |
25dbc73a AM |
10326 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
10327 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
10328 | for (; dyncon < dynconend; dyncon++) | |
10329 | { | |
10330 | Elf_Internal_Dyn dyn; | |
10331 | asection *s; | |
e1a9cb8e | 10332 | |
9d8504b1 | 10333 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 10334 | |
25dbc73a AM |
10335 | switch (dyn.d_tag) |
10336 | { | |
10337 | case DT_PLTGOT: | |
9d8504b1 | 10338 | if (htab->is_vxworks) |
ce558b89 | 10339 | s = htab->elf.sgotplt; |
9d8504b1 | 10340 | else |
ce558b89 | 10341 | s = htab->elf.splt; |
25dbc73a AM |
10342 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10343 | break; | |
86bbe32f | 10344 | |
25dbc73a | 10345 | case DT_PLTRELSZ: |
ce558b89 | 10346 | dyn.d_un.d_val = htab->elf.srelplt->size; |
25dbc73a | 10347 | break; |
e1a9cb8e | 10348 | |
25dbc73a | 10349 | case DT_JMPREL: |
ce558b89 | 10350 | s = htab->elf.srelplt; |
25dbc73a AM |
10351 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10352 | break; | |
2f89ff8d | 10353 | |
1fe44d79 AM |
10354 | case DT_PPC_GOT: |
10355 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
10356 | break; |
10357 | ||
82e66161 AM |
10358 | case DT_TEXTREL: |
10359 | if (htab->local_ifunc_resolver) | |
10360 | info->callbacks->einfo | |
10361 | (_("%X%P: text relocations and GNU indirect " | |
10362 | "functions will result in a segfault at runtime\n")); | |
10363 | else if (htab->maybe_local_ifunc_resolver) | |
10364 | info->callbacks->einfo | |
10365 | (_("%P: warning: text relocations and GNU indirect " | |
10366 | "functions may result in a segfault at runtime\n")); | |
10367 | continue; | |
10368 | ||
25dbc73a | 10369 | default: |
7a2b07ff NS |
10370 | if (htab->is_vxworks |
10371 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10372 | break; | |
25dbc73a AM |
10373 | continue; |
10374 | } | |
4c45e5c9 | 10375 | |
25dbc73a AM |
10376 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
10377 | } | |
10378 | } | |
4c45e5c9 | 10379 | |
6528b6eb AM |
10380 | if (htab->elf.sgot != NULL |
10381 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
25dbc73a | 10382 | { |
ce558b89 AM |
10383 | if (htab->elf.hgot->root.u.def.section == htab->elf.sgot |
10384 | || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt) | |
e87d4038 | 10385 | { |
e79f5955 | 10386 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 10387 | |
e87d4038 AM |
10388 | p += htab->elf.hgot->root.u.def.value; |
10389 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
10390 | { |
10391 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
10392 | so that a function can easily find the address of | |
10393 | _GLOBAL_OFFSET_TABLE_. */ | |
10394 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
10395 | < htab->elf.hgot->root.u.def.section->size); | |
10396 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
10397 | } | |
3b36f7e6 | 10398 | |
e87d4038 | 10399 | if (sdyn != NULL) |
e79f5955 AM |
10400 | { |
10401 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
10402 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
10403 | < htab->elf.hgot->root.u.def.section->size); | |
10404 | bfd_put_32 (output_bfd, val, p); | |
10405 | } | |
e87d4038 AM |
10406 | } |
10407 | else | |
10408 | { | |
695344c0 | 10409 | /* xgettext:c-format */ |
8de848d8 | 10410 | info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"), |
25f53a85 | 10411 | htab->elf.hgot->root.root.string, |
ce558b89 AM |
10412 | (htab->elf.sgotplt != NULL |
10413 | ? htab->elf.sgotplt->name | |
10414 | : htab->elf.sgot->name)); | |
e87d4038 AM |
10415 | bfd_set_error (bfd_error_bad_value); |
10416 | ret = FALSE; | |
10417 | } | |
25dbc73a | 10418 | |
ce558b89 | 10419 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; |
25dbc73a AM |
10420 | } |
10421 | ||
9d8504b1 | 10422 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
6528b6eb AM |
10423 | if (htab->is_vxworks |
10424 | && htab->elf.splt != NULL | |
10425 | && htab->elf.splt->size != 0 | |
10426 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
9d8504b1 | 10427 | { |
6528b6eb | 10428 | asection *splt = htab->elf.splt; |
9d8504b1 | 10429 | /* Use the right PLT. */ |
0e1862bb | 10430 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
10431 | ? ppc_elf_vxworks_pic_plt0_entry |
10432 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 10433 | |
0e1862bb | 10434 | if (!bfd_link_pic (info)) |
9d8504b1 | 10435 | { |
e87d4038 | 10436 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10437 | |
e87d4038 | 10438 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10439 | splt->contents + 0); |
e87d4038 | 10440 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10441 | splt->contents + 4); |
10442 | } | |
10443 | else | |
10444 | { | |
10445 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10446 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10447 | } | |
10448 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10449 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10450 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10451 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10452 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10453 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10454 | ||
0e1862bb | 10455 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
10456 | { |
10457 | Elf_Internal_Rela rela; | |
10458 | bfd_byte *loc; | |
10459 | ||
10460 | loc = htab->srelplt2->contents; | |
10461 | ||
10462 | /* Output the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10463 | rela.r_offset = (htab->elf.splt->output_section->vma |
10464 | + htab->elf.splt->output_offset | |
9d8504b1 | 10465 | + 2); |
636ce3f5 | 10466 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10467 | rela.r_addend = 0; |
10468 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10469 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10470 | |
9d8504b1 | 10471 | /* Output the @l relocation for the second instruction. */ |
ce558b89 AM |
10472 | rela.r_offset = (htab->elf.splt->output_section->vma |
10473 | + htab->elf.splt->output_offset | |
9d8504b1 | 10474 | + 6); |
636ce3f5 | 10475 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10476 | rela.r_addend = 0; |
10477 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10478 | loc += sizeof (Elf32_External_Rela); | |
10479 | ||
10480 | /* Fix up the remaining relocations. They may have the wrong | |
10481 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10482 | in which symbols were output. */ | |
10483 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10484 | { | |
10485 | Elf_Internal_Rela rel; | |
10486 | ||
10487 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10488 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10489 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10490 | loc += sizeof (Elf32_External_Rela); | |
10491 | ||
10492 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10493 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10494 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10495 | loc += sizeof (Elf32_External_Rela); | |
10496 | ||
10497 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10498 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10499 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10500 | loc += sizeof (Elf32_External_Rela); | |
10501 | } | |
10502 | } | |
10503 | } | |
10504 | ||
e054468f AM |
10505 | if (htab->glink != NULL |
10506 | && htab->glink->contents != NULL | |
10507 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10508 | { |
10509 | unsigned char *p; | |
10510 | unsigned char *endp; | |
a6aa5195 | 10511 | bfd_vma res0; |
a6aa5195 AM |
10512 | |
10513 | /* | |
10514 | * PIC glink code is the following: | |
10515 | * | |
10516 | * # ith PLT code stub. | |
10517 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10518 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10519 | * mtctr 11 | |
10520 | * bctr | |
10521 | * | |
10522 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10523 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10524 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10525 | * res_0: b PLTresolve | |
10526 | * res_1: b PLTresolve | |
10527 | * . | |
10528 | * # Some number of entries towards the end can be nops | |
10529 | * res_n_m3: nop | |
10530 | * res_n_m2: nop | |
10531 | * res_n_m1: | |
10532 | * | |
10533 | * PLTresolve: | |
10534 | * addis 11,11,(1f-res_0)@ha | |
10535 | * mflr 0 | |
10536 | * bcl 20,31,1f | |
10537 | * 1: addi 11,11,(1b-res_0)@l | |
10538 | * mflr 12 | |
10539 | * mtlr 0 | |
07d6d2b8 | 10540 | * sub 11,11,12 # r11 = index * 4 |
a6aa5195 | 10541 | * addis 12,12,(got+4-1b)@ha |
07d6d2b8 AM |
10542 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve |
10543 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
a6aa5195 AM |
10544 | * mtctr 0 |
10545 | * add 0,11,11 | |
07d6d2b8 | 10546 | * add 11,0,11 # r11 = index * 12 = reloc offset. |
a6aa5195 | 10547 | * bctr |
9e390558 | 10548 | * |
176a0d42 AM |
10549 | * Non-PIC glink code is a little simpler. |
10550 | * | |
10551 | * # ith PLT code stub. | |
10552 | * lis 11,(plt+(i-1)*4)@ha | |
10553 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10554 | * mtctr 11 | |
10555 | * bctr | |
10556 | * | |
10557 | * The branch table is the same, then comes | |
10558 | * | |
10559 | * PLTresolve: | |
10560 | * lis 12,(got+4)@ha | |
10561 | * addis 11,11,(-res_0)@ha | |
07d6d2b8 AM |
10562 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve |
10563 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
176a0d42 AM |
10564 | * mtctr 0 |
10565 | * add 0,11,11 | |
07d6d2b8 AM |
10566 | * lwz 12,(got+8)@l(12) # got[2] contains the map address |
10567 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
176a0d42 AM |
10568 | * bctr |
10569 | */ | |
7e8aeb9a | 10570 | |
a6aa5195 | 10571 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10572 | and perhaps some padding. */ |
a6aa5195 AM |
10573 | p = htab->glink->contents; |
10574 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10575 | endp = htab->glink->contents; |
10576 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10577 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10578 | { |
10579 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10580 | p += 4; | |
10581 | } | |
10582 | while (p < endp) | |
10583 | { | |
10584 | bfd_put_32 (output_bfd, NOP, p); | |
10585 | p += 4; | |
10586 | } | |
10587 | ||
7e8aeb9a | 10588 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10589 | + htab->glink->output_section->vma |
10590 | + htab->glink->output_offset); | |
10591 | ||
da3a2088 AM |
10592 | if (htab->params->ppc476_workaround) |
10593 | { | |
10594 | /* Ensure that a call stub at the end of a page doesn't | |
10595 | result in prefetch over the end of the page into the | |
10596 | glink branch table. */ | |
10597 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10598 | bfd_vma page_addr; | |
10599 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10600 | + htab->glink->output_offset); | |
10601 | ||
10602 | for (page_addr = res0 & -pagesize; | |
10603 | page_addr > glink_start; | |
10604 | page_addr -= pagesize) | |
10605 | { | |
10606 | /* We have a plt call stub that may need fixing. */ | |
10607 | bfd_byte *loc; | |
10608 | unsigned int insn; | |
10609 | ||
10610 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10611 | insn = bfd_get_32 (output_bfd, loc); | |
10612 | if (insn == BCTR) | |
10613 | { | |
10614 | /* By alignment, we know that there must be at least | |
10615 | one other call stub before this one. */ | |
10616 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10617 | if (insn == BCTR) | |
10618 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10619 | else | |
10620 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10621 | } | |
10622 | } | |
10623 | } | |
10624 | ||
86b9da88 | 10625 | /* Last comes the PLTresolve stub. */ |
9e390558 | 10626 | endp = p + GLINK_PLTRESOLVE; |
0e1862bb | 10627 | if (bfd_link_pic (info)) |
7e8aeb9a | 10628 | { |
a6aa5195 | 10629 | bfd_vma bcl; |
d7128ce4 | 10630 | |
a6aa5195 AM |
10631 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 |
10632 | + htab->glink->output_section->vma | |
10633 | + htab->glink->output_offset); | |
10634 | ||
9e390558 AM |
10635 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p); |
10636 | p += 4; | |
10637 | bfd_put_32 (output_bfd, MFLR_0, p); | |
10638 | p += 4; | |
10639 | bfd_put_32 (output_bfd, BCL_20_31, p); | |
10640 | p += 4; | |
10641 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p); | |
10642 | p += 4; | |
10643 | bfd_put_32 (output_bfd, MFLR_12, p); | |
10644 | p += 4; | |
10645 | bfd_put_32 (output_bfd, MTLR_0, p); | |
10646 | p += 4; | |
10647 | bfd_put_32 (output_bfd, SUB_11_11_12, p); | |
10648 | p += 4; | |
10649 | bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p); | |
10650 | p += 4; | |
a6aa5195 AM |
10651 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) |
10652 | { | |
9e390558 AM |
10653 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p); |
10654 | p += 4; | |
10655 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p); | |
10656 | p += 4; | |
a6aa5195 AM |
10657 | } |
10658 | else | |
10659 | { | |
9e390558 AM |
10660 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p); |
10661 | p += 4; | |
10662 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10663 | p += 4; | |
a6aa5195 | 10664 | } |
9e390558 AM |
10665 | bfd_put_32 (output_bfd, MTCTR_0, p); |
10666 | p += 4; | |
10667 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
7e8aeb9a AM |
10668 | } |
10669 | else | |
d7128ce4 | 10670 | { |
9e390558 AM |
10671 | bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p); |
10672 | p += 4; | |
10673 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p); | |
10674 | p += 4; | |
a6aa5195 | 10675 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) |
9e390558 | 10676 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p); |
a6aa5195 | 10677 | else |
9e390558 AM |
10678 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p); |
10679 | p += 4; | |
10680 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p); | |
10681 | p += 4; | |
10682 | bfd_put_32 (output_bfd, MTCTR_0, p); | |
10683 | p += 4; | |
10684 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
10685 | p += 4; | |
10686 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10687 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p); | |
10688 | else | |
10689 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10690 | } | |
10691 | p += 4; | |
10692 | bfd_put_32 (output_bfd, ADD_11_0_11, p); | |
10693 | p += 4; | |
407aa07c AM |
10694 | bfd_put_32 (output_bfd, BCTR, p); |
10695 | p += 4; | |
9e390558 AM |
10696 | while (p < endp) |
10697 | { | |
10698 | bfd_put_32 (output_bfd, | |
10699 | htab->params->ppc476_workaround ? BA : NOP, p); | |
10700 | p += 4; | |
d7128ce4 | 10701 | } |
9e390558 | 10702 | BFD_ASSERT (p == endp); |
d7128ce4 AM |
10703 | } |
10704 | ||
6177242a AM |
10705 | if (htab->glink_eh_frame != NULL |
10706 | && htab->glink_eh_frame->contents != NULL) | |
10707 | { | |
10708 | unsigned char *p = htab->glink_eh_frame->contents; | |
10709 | bfd_vma val; | |
10710 | ||
6177242a AM |
10711 | p += sizeof (glink_eh_frame_cie); |
10712 | /* FDE length. */ | |
6177242a AM |
10713 | p += 4; |
10714 | /* CIE pointer. */ | |
6177242a AM |
10715 | p += 4; |
10716 | /* Offset to .glink. */ | |
10717 | val = (htab->glink->output_section->vma | |
10718 | + htab->glink->output_offset); | |
10719 | val -= (htab->glink_eh_frame->output_section->vma | |
10720 | + htab->glink_eh_frame->output_offset); | |
10721 | val -= p - htab->glink_eh_frame->contents; | |
10722 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10723 | |
dbaa2011 | 10724 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10725 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10726 | htab->glink_eh_frame, | |
10727 | htab->glink_eh_frame->contents)) | |
10728 | return FALSE; | |
10729 | } | |
10730 | ||
e87d4038 | 10731 | return ret; |
25dbc73a | 10732 | } |
e1a9cb8e | 10733 | \f |
6d00b590 | 10734 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10735 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10736 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10737 | #define TARGET_BIG_NAME "elf32-powerpc" |
10738 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10739 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 | 10740 | #define ELF_MACHINE_CODE EM_PPC |
d0facd1b NC |
10741 | #ifdef __QNXTARGET__ |
10742 | #define ELF_MAXPAGESIZE 0x1000 | |
04c6a44c | 10743 | #define ELF_COMMONPAGESIZE 0x1000 |
d0facd1b | 10744 | #else |
252b5132 | 10745 | #define ELF_MAXPAGESIZE 0x10000 |
04c6a44c | 10746 | #define ELF_COMMONPAGESIZE 0x10000 |
d0facd1b | 10747 | #endif |
b1342370 | 10748 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
10749 | #define elf_info_to_howto ppc_elf_info_to_howto |
10750 | ||
10751 | #ifdef EM_CYGNUS_POWERPC | |
10752 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10753 | #endif | |
10754 | ||
10755 | #ifdef EM_PPC_OLD | |
10756 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10757 | #endif | |
10758 | ||
10759 | #define elf_backend_plt_not_loaded 1 | |
5474d94f | 10760 | #define elf_backend_want_dynrelro 1 |
252b5132 | 10761 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10762 | #define elf_backend_can_refcount 1 |
b491616a | 10763 | #define elf_backend_rela_normal 1 |
53291d1f | 10764 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10765 | |
43c40ab2 | 10766 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10767 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10768 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10769 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10770 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10771 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10772 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10773 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10774 | |
feee612b | 10775 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 | 10776 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
252b5132 RH |
10777 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
10778 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10779 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10780 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
c0e331c7 | 10781 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
7fce784e | 10782 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10783 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10784 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10785 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10786 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10787 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10788 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10789 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10790 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
954b63d4 | 10791 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10792 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10793 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10794 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10795 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10796 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10797 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10798 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10799 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10800 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10801 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10802 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10803 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
252b5132 RH |
10804 | |
10805 | #include "elf32-target.h" | |
9d8504b1 | 10806 | |
7b8e7dad AM |
10807 | /* FreeBSD Target */ |
10808 | ||
10809 | #undef TARGET_LITTLE_SYM | |
10810 | #undef TARGET_LITTLE_NAME | |
10811 | ||
10812 | #undef TARGET_BIG_SYM | |
6d00b590 | 10813 | #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec |
7b8e7dad AM |
10814 | #undef TARGET_BIG_NAME |
10815 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10816 | ||
10817 | #undef ELF_OSABI | |
10818 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10819 | ||
10820 | #undef elf32_bed | |
10821 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10822 | ||
10823 | #include "elf32-target.h" | |
10824 | ||
9d8504b1 PB |
10825 | /* VxWorks Target */ |
10826 | ||
10827 | #undef TARGET_LITTLE_SYM | |
10828 | #undef TARGET_LITTLE_NAME | |
10829 | ||
10830 | #undef TARGET_BIG_SYM | |
6d00b590 | 10831 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10832 | #undef TARGET_BIG_NAME |
10833 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10834 | ||
7b8e7dad AM |
10835 | #undef ELF_OSABI |
10836 | ||
d5e3d971 PB |
10837 | /* VxWorks uses the elf default section flags for .plt. */ |
10838 | static const struct bfd_elf_special_section * | |
4aef7643 | 10839 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec) |
9d8504b1 | 10840 | { |
d5e3d971 PB |
10841 | if (sec->name == NULL) |
10842 | return NULL; | |
10843 | ||
10844 | if (strcmp (sec->name, ".plt") == 0) | |
10845 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10846 | ||
10847 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10848 | } | |
9d8504b1 PB |
10849 | |
10850 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10851 | appropriately for VxWorks. */ | |
10852 | static struct bfd_link_hash_table * | |
10853 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10854 | { | |
10855 | struct bfd_link_hash_table *ret; | |
10856 | ||
10857 | ret = ppc_elf_link_hash_table_create (abfd); | |
10858 | if (ret) | |
10859 | { | |
10860 | struct ppc_elf_link_hash_table *htab | |
954b63d4 | 10861 | = (struct ppc_elf_link_hash_table *)ret; |
9d8504b1 | 10862 | htab->is_vxworks = 1; |
4a3dc543 | 10863 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10864 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10865 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10866 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10867 | } | |
10868 | return ret; | |
10869 | } | |
10870 | ||
10871 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10872 | static bfd_boolean | |
10873 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10874 | struct bfd_link_info *info, | |
10875 | Elf_Internal_Sym *sym, | |
4aef7643 AM |
10876 | const char **namep, |
10877 | flagword *flagsp, | |
9d8504b1 PB |
10878 | asection **secp, |
10879 | bfd_vma *valp) | |
10880 | { | |
4aef7643 AM |
10881 | if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, |
10882 | valp)) | |
9d8504b1 PB |
10883 | return FALSE; |
10884 | ||
4aef7643 | 10885 | return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp); |
9d8504b1 PB |
10886 | } |
10887 | ||
9d8504b1 PB |
10888 | static void |
10889 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
10890 | { | |
4aef7643 AM |
10891 | ppc_elf_final_write_processing (abfd, linker); |
10892 | elf_vxworks_final_write_processing (abfd, linker); | |
9d8504b1 PB |
10893 | } |
10894 | ||
10895 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10896 | define it. */ | |
10897 | #undef elf_backend_want_plt_sym | |
10898 | #define elf_backend_want_plt_sym 1 | |
10899 | #undef elf_backend_want_got_plt | |
10900 | #define elf_backend_want_got_plt 1 | |
10901 | #undef elf_backend_got_symbol_offset | |
10902 | #define elf_backend_got_symbol_offset 0 | |
10903 | #undef elf_backend_plt_not_loaded | |
10904 | #define elf_backend_plt_not_loaded 0 | |
10905 | #undef elf_backend_plt_readonly | |
10906 | #define elf_backend_plt_readonly 1 | |
10907 | #undef elf_backend_got_header_size | |
10908 | #define elf_backend_got_header_size 12 | |
64f52338 AM |
10909 | #undef elf_backend_dtrel_excludes_plt |
10910 | #define elf_backend_dtrel_excludes_plt 1 | |
9d8504b1 | 10911 | |
468392fb AM |
10912 | #undef bfd_elf32_get_synthetic_symtab |
10913 | ||
9d8504b1 PB |
10914 | #undef bfd_elf32_bfd_link_hash_table_create |
10915 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10916 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10917 | #undef elf_backend_add_symbol_hook |
10918 | #define elf_backend_add_symbol_hook \ | |
10919 | ppc_elf_vxworks_add_symbol_hook | |
10920 | #undef elf_backend_link_output_symbol_hook | |
10921 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10922 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10923 | #undef elf_backend_final_write_processing |
10924 | #define elf_backend_final_write_processing \ | |
10925 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10926 | #undef elf_backend_get_sec_type_attr |
10927 | #define elf_backend_get_sec_type_attr \ | |
10928 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10929 | #undef elf_backend_emit_relocs |
10930 | #define elf_backend_emit_relocs \ | |
10931 | elf_vxworks_emit_relocs | |
10932 | ||
10933 | #undef elf32_bed | |
10934 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 10935 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
10936 | |
10937 | #include "elf32-target.h" |