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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) \ |
1be5d8d3 | 72 | (((!htab->params->speculate_indirect_jumps ? 6*4 : 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 |
1be5d8d3 AM |
158 | #define CRSETEQ 0x4c421242 |
159 | #define BEQCTRM 0x4dc20420 | |
a7f2871e AM |
160 | #define BEQLR 0x4d820020 |
161 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
162 | #define LIS_11 0x3d600000 |
163 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
164 | #define LWZU_0_12 0x840c0000 |
165 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 166 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
167 | #define LWZ_11_11 0x816b0000 |
168 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 169 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 170 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
171 | #define MR_0_3 0x7c601b78 |
172 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
173 | #define MFLR_0 0x7c0802a6 |
174 | #define MFLR_12 0x7d8802a6 | |
175 | #define MTCTR_0 0x7c0903a6 | |
176 | #define MTCTR_11 0x7d6903a6 | |
177 | #define MTLR_0 0x7c0803a6 | |
178 | #define NOP 0x60000000 | |
179 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
180 | |
181 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
182 | #define TP_OFFSET 0x7000 | |
183 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
184 | |
185 | /* The value of a defined global symbol. */ | |
186 | #define SYM_VAL(SYM) \ | |
187 | ((SYM)->root.u.def.section->output_section->vma \ | |
188 | + (SYM)->root.u.def.section->output_offset \ | |
189 | + (SYM)->root.u.def.value) | |
7fce784e | 190 | \f |
e47cd125 | 191 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 192 | |
8da6118f | 193 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
194 | /* This reloc does nothing. */ |
195 | HOWTO (R_PPC_NONE, /* type */ | |
196 | 0, /* rightshift */ | |
6346d5ca AM |
197 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
198 | 0, /* bitsize */ | |
b34976b6 | 199 | FALSE, /* pc_relative */ |
252b5132 | 200 | 0, /* bitpos */ |
86c95733 | 201 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
202 | bfd_elf_generic_reloc, /* special_function */ |
203 | "R_PPC_NONE", /* name */ | |
b34976b6 | 204 | FALSE, /* partial_inplace */ |
252b5132 RH |
205 | 0, /* src_mask */ |
206 | 0, /* dst_mask */ | |
b34976b6 | 207 | FALSE), /* pcrel_offset */ |
252b5132 RH |
208 | |
209 | /* A standard 32 bit relocation. */ | |
210 | HOWTO (R_PPC_ADDR32, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 32, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
252b5132 | 215 | 0, /* bitpos */ |
86c95733 | 216 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
217 | bfd_elf_generic_reloc, /* special_function */ |
218 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
252b5132 RH |
220 | 0, /* src_mask */ |
221 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
252b5132 RH |
223 | |
224 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
225 | FIXME: we don't check that, we just clear them. */ | |
226 | HOWTO (R_PPC_ADDR24, /* type */ | |
227 | 0, /* rightshift */ | |
228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
229 | 26, /* bitsize */ | |
b34976b6 | 230 | FALSE, /* pc_relative */ |
252b5132 | 231 | 0, /* bitpos */ |
86c95733 | 232 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
233 | bfd_elf_generic_reloc, /* special_function */ |
234 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 235 | FALSE, /* partial_inplace */ |
252b5132 RH |
236 | 0, /* src_mask */ |
237 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 238 | FALSE), /* pcrel_offset */ |
252b5132 RH |
239 | |
240 | /* A standard 16 bit relocation. */ | |
241 | HOWTO (R_PPC_ADDR16, /* type */ | |
242 | 0, /* rightshift */ | |
243 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
244 | 16, /* bitsize */ | |
b34976b6 | 245 | FALSE, /* pc_relative */ |
252b5132 RH |
246 | 0, /* bitpos */ |
247 | complain_overflow_bitfield, /* complain_on_overflow */ | |
248 | bfd_elf_generic_reloc, /* special_function */ | |
249 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 250 | FALSE, /* partial_inplace */ |
252b5132 RH |
251 | 0, /* src_mask */ |
252 | 0xffff, /* dst_mask */ | |
b34976b6 | 253 | FALSE), /* pcrel_offset */ |
252b5132 RH |
254 | |
255 | /* A 16 bit relocation without overflow. */ | |
256 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
257 | 0, /* rightshift */ | |
258 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
259 | 16, /* bitsize */ | |
b34976b6 | 260 | FALSE, /* pc_relative */ |
252b5132 RH |
261 | 0, /* bitpos */ |
262 | complain_overflow_dont,/* complain_on_overflow */ | |
263 | bfd_elf_generic_reloc, /* special_function */ | |
264 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 265 | FALSE, /* partial_inplace */ |
252b5132 RH |
266 | 0, /* src_mask */ |
267 | 0xffff, /* dst_mask */ | |
b34976b6 | 268 | FALSE), /* pcrel_offset */ |
252b5132 RH |
269 | |
270 | /* The high order 16 bits of an address. */ | |
271 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
272 | 16, /* rightshift */ | |
273 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
274 | 16, /* bitsize */ | |
b34976b6 | 275 | FALSE, /* pc_relative */ |
252b5132 RH |
276 | 0, /* bitpos */ |
277 | complain_overflow_dont, /* complain_on_overflow */ | |
278 | bfd_elf_generic_reloc, /* special_function */ | |
279 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 280 | FALSE, /* partial_inplace */ |
252b5132 RH |
281 | 0, /* src_mask */ |
282 | 0xffff, /* dst_mask */ | |
b34976b6 | 283 | FALSE), /* pcrel_offset */ |
252b5132 RH |
284 | |
285 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 286 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
287 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
288 | 16, /* rightshift */ | |
289 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
290 | 16, /* bitsize */ | |
b34976b6 | 291 | FALSE, /* pc_relative */ |
252b5132 RH |
292 | 0, /* bitpos */ |
293 | complain_overflow_dont, /* complain_on_overflow */ | |
294 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
295 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 296 | FALSE, /* partial_inplace */ |
252b5132 RH |
297 | 0, /* src_mask */ |
298 | 0xffff, /* dst_mask */ | |
b34976b6 | 299 | FALSE), /* pcrel_offset */ |
252b5132 RH |
300 | |
301 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
302 | FIXME: we don't check that, we just clear them. */ | |
303 | HOWTO (R_PPC_ADDR14, /* type */ | |
304 | 0, /* rightshift */ | |
305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
306 | 16, /* bitsize */ | |
b34976b6 | 307 | FALSE, /* pc_relative */ |
252b5132 | 308 | 0, /* bitpos */ |
86c95733 | 309 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
310 | bfd_elf_generic_reloc, /* special_function */ |
311 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 312 | FALSE, /* partial_inplace */ |
252b5132 RH |
313 | 0, /* src_mask */ |
314 | 0xfffc, /* dst_mask */ | |
b34976b6 | 315 | FALSE), /* pcrel_offset */ |
252b5132 RH |
316 | |
317 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
318 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 319 | bits must be zero. */ |
252b5132 RH |
320 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
321 | 0, /* rightshift */ | |
322 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
323 | 16, /* bitsize */ | |
b34976b6 | 324 | FALSE, /* pc_relative */ |
252b5132 | 325 | 0, /* bitpos */ |
86c95733 | 326 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
327 | bfd_elf_generic_reloc, /* special_function */ |
328 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 329 | FALSE, /* partial_inplace */ |
252b5132 RH |
330 | 0, /* src_mask */ |
331 | 0xfffc, /* dst_mask */ | |
b34976b6 | 332 | FALSE), /* pcrel_offset */ |
252b5132 RH |
333 | |
334 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
335 | indicate that the branch is not expected to be taken. The lower | |
336 | two bits must be zero. */ | |
337 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
338 | 0, /* rightshift */ | |
339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
340 | 16, /* bitsize */ | |
b34976b6 | 341 | FALSE, /* pc_relative */ |
252b5132 | 342 | 0, /* bitpos */ |
86c95733 | 343 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
344 | bfd_elf_generic_reloc, /* special_function */ |
345 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 346 | FALSE, /* partial_inplace */ |
252b5132 RH |
347 | 0, /* src_mask */ |
348 | 0xfffc, /* dst_mask */ | |
b34976b6 | 349 | FALSE), /* pcrel_offset */ |
252b5132 | 350 | |
8da6118f | 351 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
352 | HOWTO (R_PPC_REL24, /* type */ |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 26, /* bitsize */ | |
b34976b6 | 356 | TRUE, /* pc_relative */ |
252b5132 RH |
357 | 0, /* bitpos */ |
358 | complain_overflow_signed, /* complain_on_overflow */ | |
359 | bfd_elf_generic_reloc, /* special_function */ | |
360 | "R_PPC_REL24", /* name */ | |
b34976b6 | 361 | FALSE, /* partial_inplace */ |
252b5132 RH |
362 | 0, /* src_mask */ |
363 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 364 | TRUE), /* pcrel_offset */ |
252b5132 | 365 | |
8da6118f | 366 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
367 | HOWTO (R_PPC_REL14, /* type */ |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 16, /* bitsize */ | |
b34976b6 | 371 | TRUE, /* pc_relative */ |
252b5132 RH |
372 | 0, /* bitpos */ |
373 | complain_overflow_signed, /* complain_on_overflow */ | |
374 | bfd_elf_generic_reloc, /* special_function */ | |
375 | "R_PPC_REL14", /* name */ | |
b34976b6 | 376 | FALSE, /* partial_inplace */ |
252b5132 RH |
377 | 0, /* src_mask */ |
378 | 0xfffc, /* dst_mask */ | |
b34976b6 | 379 | TRUE), /* pcrel_offset */ |
252b5132 | 380 | |
8da6118f | 381 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
382 | the branch is expected to be taken. The lower two bits must be |
383 | zero. */ | |
384 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 16, /* bitsize */ | |
b34976b6 | 388 | TRUE, /* pc_relative */ |
252b5132 RH |
389 | 0, /* bitpos */ |
390 | complain_overflow_signed, /* complain_on_overflow */ | |
391 | bfd_elf_generic_reloc, /* special_function */ | |
392 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 393 | FALSE, /* partial_inplace */ |
252b5132 RH |
394 | 0, /* src_mask */ |
395 | 0xfffc, /* dst_mask */ | |
b34976b6 | 396 | TRUE), /* pcrel_offset */ |
252b5132 | 397 | |
8da6118f | 398 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
399 | the branch is not expected to be taken. The lower two bits must |
400 | be zero. */ | |
401 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 16, /* bitsize */ | |
b34976b6 | 405 | TRUE, /* pc_relative */ |
252b5132 RH |
406 | 0, /* bitpos */ |
407 | complain_overflow_signed, /* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
409 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
252b5132 RH |
411 | 0, /* src_mask */ |
412 | 0xfffc, /* dst_mask */ | |
b34976b6 | 413 | TRUE), /* pcrel_offset */ |
252b5132 RH |
414 | |
415 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
416 | symbol. */ | |
417 | HOWTO (R_PPC_GOT16, /* type */ | |
418 | 0, /* rightshift */ | |
419 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
420 | 16, /* bitsize */ | |
b34976b6 | 421 | FALSE, /* pc_relative */ |
252b5132 RH |
422 | 0, /* bitpos */ |
423 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 424 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 425 | "R_PPC_GOT16", /* name */ |
b34976b6 | 426 | FALSE, /* partial_inplace */ |
252b5132 RH |
427 | 0, /* src_mask */ |
428 | 0xffff, /* dst_mask */ | |
b34976b6 | 429 | FALSE), /* pcrel_offset */ |
252b5132 RH |
430 | |
431 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
432 | the symbol. */ | |
433 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
434 | 0, /* rightshift */ | |
435 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 16, /* bitsize */ | |
b34976b6 | 437 | FALSE, /* pc_relative */ |
252b5132 RH |
438 | 0, /* bitpos */ |
439 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 440 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 441 | "R_PPC_GOT16_LO", /* name */ |
b34976b6 | 442 | FALSE, /* partial_inplace */ |
252b5132 RH |
443 | 0, /* src_mask */ |
444 | 0xffff, /* dst_mask */ | |
b34976b6 | 445 | FALSE), /* pcrel_offset */ |
252b5132 RH |
446 | |
447 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
448 | the symbol. */ | |
449 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
450 | 16, /* rightshift */ | |
451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 16, /* bitsize */ | |
b34976b6 | 453 | FALSE, /* pc_relative */ |
252b5132 | 454 | 0, /* bitpos */ |
86c95733 | 455 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 456 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 457 | "R_PPC_GOT16_HI", /* name */ |
b34976b6 | 458 | FALSE, /* partial_inplace */ |
252b5132 RH |
459 | 0, /* src_mask */ |
460 | 0xffff, /* dst_mask */ | |
b34976b6 | 461 | FALSE), /* pcrel_offset */ |
252b5132 RH |
462 | |
463 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
464 | the symbol. */ | |
465 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
466 | 16, /* rightshift */ | |
467 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 16, /* bitsize */ | |
b34976b6 | 469 | FALSE, /* pc_relative */ |
252b5132 | 470 | 0, /* bitpos */ |
86c95733 | 471 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 472 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 473 | "R_PPC_GOT16_HA", /* name */ |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
252b5132 RH |
475 | 0, /* src_mask */ |
476 | 0xffff, /* dst_mask */ | |
b34976b6 | 477 | FALSE), /* pcrel_offset */ |
252b5132 RH |
478 | |
479 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
480 | entry for the symbol. */ | |
481 | HOWTO (R_PPC_PLTREL24, /* type */ | |
482 | 0, /* rightshift */ | |
483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 26, /* bitsize */ | |
b34976b6 | 485 | TRUE, /* pc_relative */ |
252b5132 | 486 | 0, /* bitpos */ |
3ce51288 AM |
487 | complain_overflow_signed, /* complain_on_overflow */ |
488 | ppc_elf_unhandled_reloc, /* special_function */ | |
252b5132 | 489 | "R_PPC_PLTREL24", /* name */ |
b34976b6 | 490 | FALSE, /* partial_inplace */ |
252b5132 RH |
491 | 0, /* src_mask */ |
492 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 493 | TRUE), /* pcrel_offset */ |
252b5132 RH |
494 | |
495 | /* This is used only by the dynamic linker. The symbol should exist | |
496 | both in the object being run and in some shared library. The | |
497 | dynamic linker copies the data addressed by the symbol from the | |
498 | shared library into the object, because the object being | |
499 | run has to have the data at some particular address. */ | |
500 | HOWTO (R_PPC_COPY, /* type */ | |
501 | 0, /* rightshift */ | |
502 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 32, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
252b5132 | 505 | 0, /* bitpos */ |
86c95733 | 506 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 507 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 508 | "R_PPC_COPY", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
252b5132 RH |
510 | 0, /* src_mask */ |
511 | 0, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
252b5132 RH |
513 | |
514 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
515 | entries. */ | |
516 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
517 | 0, /* rightshift */ | |
518 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
519 | 32, /* bitsize */ | |
b34976b6 | 520 | FALSE, /* pc_relative */ |
252b5132 | 521 | 0, /* bitpos */ |
86c95733 | 522 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 523 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 524 | "R_PPC_GLOB_DAT", /* name */ |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
252b5132 RH |
526 | 0, /* src_mask */ |
527 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
252b5132 RH |
529 | |
530 | /* Marks a procedure linkage table entry for a symbol. */ | |
531 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
532 | 0, /* rightshift */ | |
533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 32, /* bitsize */ | |
b34976b6 | 535 | FALSE, /* pc_relative */ |
252b5132 | 536 | 0, /* bitpos */ |
86c95733 | 537 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 538 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 539 | "R_PPC_JMP_SLOT", /* name */ |
b34976b6 | 540 | FALSE, /* partial_inplace */ |
252b5132 RH |
541 | 0, /* src_mask */ |
542 | 0, /* dst_mask */ | |
b34976b6 | 543 | FALSE), /* pcrel_offset */ |
252b5132 RH |
544 | |
545 | /* Used only by the dynamic linker. When the object is run, this | |
546 | longword is set to the load address of the object, plus the | |
547 | addend. */ | |
548 | HOWTO (R_PPC_RELATIVE, /* type */ | |
549 | 0, /* rightshift */ | |
550 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
551 | 32, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
252b5132 | 553 | 0, /* bitpos */ |
86c95733 | 554 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
555 | bfd_elf_generic_reloc, /* special_function */ |
556 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
252b5132 RH |
558 | 0, /* src_mask */ |
559 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
252b5132 RH |
561 | |
562 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
563 | object rather than the final value. Normally used for | |
564 | _GLOBAL_OFFSET_TABLE_. */ | |
565 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
566 | 0, /* rightshift */ | |
567 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
568 | 26, /* bitsize */ | |
b34976b6 | 569 | TRUE, /* pc_relative */ |
252b5132 RH |
570 | 0, /* bitpos */ |
571 | complain_overflow_signed, /* complain_on_overflow */ | |
572 | bfd_elf_generic_reloc, /* special_function */ | |
573 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 574 | FALSE, /* partial_inplace */ |
252b5132 RH |
575 | 0, /* src_mask */ |
576 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 577 | TRUE), /* pcrel_offset */ |
252b5132 RH |
578 | |
579 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
580 | HOWTO (R_PPC_UADDR32, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 32, /* bitsize */ | |
b34976b6 | 584 | FALSE, /* pc_relative */ |
252b5132 | 585 | 0, /* bitpos */ |
86c95733 | 586 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
587 | bfd_elf_generic_reloc, /* special_function */ |
588 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 589 | FALSE, /* partial_inplace */ |
252b5132 RH |
590 | 0, /* src_mask */ |
591 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 592 | FALSE), /* pcrel_offset */ |
252b5132 RH |
593 | |
594 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
595 | HOWTO (R_PPC_UADDR16, /* type */ | |
596 | 0, /* rightshift */ | |
597 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
598 | 16, /* bitsize */ | |
b34976b6 | 599 | FALSE, /* pc_relative */ |
252b5132 RH |
600 | 0, /* bitpos */ |
601 | complain_overflow_bitfield, /* complain_on_overflow */ | |
602 | bfd_elf_generic_reloc, /* special_function */ | |
603 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 604 | FALSE, /* partial_inplace */ |
252b5132 RH |
605 | 0, /* src_mask */ |
606 | 0xffff, /* dst_mask */ | |
b34976b6 | 607 | FALSE), /* pcrel_offset */ |
252b5132 RH |
608 | |
609 | /* 32-bit PC relative */ | |
610 | HOWTO (R_PPC_REL32, /* type */ | |
611 | 0, /* rightshift */ | |
612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
613 | 32, /* bitsize */ | |
b34976b6 | 614 | TRUE, /* pc_relative */ |
252b5132 | 615 | 0, /* bitpos */ |
86c95733 | 616 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
617 | bfd_elf_generic_reloc, /* special_function */ |
618 | "R_PPC_REL32", /* name */ | |
b34976b6 | 619 | FALSE, /* partial_inplace */ |
252b5132 RH |
620 | 0, /* src_mask */ |
621 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 622 | TRUE), /* pcrel_offset */ |
252b5132 RH |
623 | |
624 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 625 | FIXME: not supported. */ |
252b5132 RH |
626 | HOWTO (R_PPC_PLT32, /* type */ |
627 | 0, /* rightshift */ | |
628 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
629 | 32, /* bitsize */ | |
b34976b6 | 630 | FALSE, /* pc_relative */ |
252b5132 | 631 | 0, /* bitpos */ |
86c95733 | 632 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 633 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 634 | "R_PPC_PLT32", /* name */ |
b34976b6 | 635 | FALSE, /* partial_inplace */ |
252b5132 RH |
636 | 0, /* src_mask */ |
637 | 0, /* dst_mask */ | |
b34976b6 | 638 | FALSE), /* pcrel_offset */ |
252b5132 RH |
639 | |
640 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 641 | FIXME: not supported. */ |
252b5132 RH |
642 | HOWTO (R_PPC_PLTREL32, /* type */ |
643 | 0, /* rightshift */ | |
644 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 32, /* bitsize */ | |
b34976b6 | 646 | TRUE, /* pc_relative */ |
252b5132 | 647 | 0, /* bitpos */ |
86c95733 | 648 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 649 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 650 | "R_PPC_PLTREL32", /* name */ |
b34976b6 | 651 | FALSE, /* partial_inplace */ |
252b5132 RH |
652 | 0, /* src_mask */ |
653 | 0, /* dst_mask */ | |
b34976b6 | 654 | TRUE), /* pcrel_offset */ |
252b5132 RH |
655 | |
656 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
657 | the symbol. */ | |
658 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
659 | 0, /* rightshift */ | |
660 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
661 | 16, /* bitsize */ | |
b34976b6 | 662 | FALSE, /* pc_relative */ |
252b5132 RH |
663 | 0, /* bitpos */ |
664 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 665 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 666 | "R_PPC_PLT16_LO", /* name */ |
b34976b6 | 667 | FALSE, /* partial_inplace */ |
252b5132 RH |
668 | 0, /* src_mask */ |
669 | 0xffff, /* dst_mask */ | |
b34976b6 | 670 | FALSE), /* pcrel_offset */ |
252b5132 RH |
671 | |
672 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
673 | the symbol. */ | |
674 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
675 | 16, /* rightshift */ | |
676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
677 | 16, /* bitsize */ | |
b34976b6 | 678 | FALSE, /* pc_relative */ |
252b5132 | 679 | 0, /* bitpos */ |
86c95733 | 680 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 681 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 682 | "R_PPC_PLT16_HI", /* name */ |
b34976b6 | 683 | FALSE, /* partial_inplace */ |
252b5132 RH |
684 | 0, /* src_mask */ |
685 | 0xffff, /* dst_mask */ | |
b34976b6 | 686 | FALSE), /* pcrel_offset */ |
252b5132 RH |
687 | |
688 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
689 | the symbol. */ | |
690 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
691 | 16, /* rightshift */ | |
692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
693 | 16, /* bitsize */ | |
b34976b6 | 694 | FALSE, /* pc_relative */ |
252b5132 | 695 | 0, /* bitpos */ |
86c95733 | 696 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 697 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 698 | "R_PPC_PLT16_HA", /* name */ |
b34976b6 | 699 | FALSE, /* partial_inplace */ |
252b5132 RH |
700 | 0, /* src_mask */ |
701 | 0xffff, /* dst_mask */ | |
b34976b6 | 702 | FALSE), /* pcrel_offset */ |
252b5132 RH |
703 | |
704 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
705 | small data items. */ | |
706 | HOWTO (R_PPC_SDAREL16, /* type */ | |
707 | 0, /* rightshift */ | |
708 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
709 | 16, /* bitsize */ | |
b34976b6 | 710 | FALSE, /* pc_relative */ |
252b5132 RH |
711 | 0, /* bitpos */ |
712 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 713 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 714 | "R_PPC_SDAREL16", /* name */ |
b34976b6 | 715 | FALSE, /* partial_inplace */ |
252b5132 RH |
716 | 0, /* src_mask */ |
717 | 0xffff, /* dst_mask */ | |
b34976b6 | 718 | FALSE), /* pcrel_offset */ |
252b5132 | 719 | |
c061c2d8 | 720 | /* 16-bit section relative relocation. */ |
252b5132 RH |
721 | HOWTO (R_PPC_SECTOFF, /* type */ |
722 | 0, /* rightshift */ | |
c061c2d8 AM |
723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
724 | 16, /* bitsize */ | |
b34976b6 | 725 | FALSE, /* pc_relative */ |
252b5132 | 726 | 0, /* bitpos */ |
86c95733 | 727 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 728 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 729 | "R_PPC_SECTOFF", /* name */ |
b34976b6 | 730 | FALSE, /* partial_inplace */ |
252b5132 | 731 | 0, /* src_mask */ |
c061c2d8 | 732 | 0xffff, /* dst_mask */ |
b34976b6 | 733 | FALSE), /* pcrel_offset */ |
252b5132 | 734 | |
c3668558 | 735 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
736 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
737 | 0, /* rightshift */ | |
738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 16, /* bitsize */ | |
b34976b6 | 740 | FALSE, /* pc_relative */ |
252b5132 RH |
741 | 0, /* bitpos */ |
742 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 743 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 744 | "R_PPC_SECTOFF_LO", /* name */ |
b34976b6 | 745 | FALSE, /* partial_inplace */ |
252b5132 RH |
746 | 0, /* src_mask */ |
747 | 0xffff, /* dst_mask */ | |
b34976b6 | 748 | FALSE), /* pcrel_offset */ |
252b5132 | 749 | |
c3668558 | 750 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
751 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
752 | 16, /* rightshift */ | |
753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 16, /* bitsize */ | |
b34976b6 | 755 | FALSE, /* pc_relative */ |
252b5132 | 756 | 0, /* bitpos */ |
86c95733 | 757 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 758 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 759 | "R_PPC_SECTOFF_HI", /* name */ |
b34976b6 | 760 | FALSE, /* partial_inplace */ |
252b5132 RH |
761 | 0, /* src_mask */ |
762 | 0xffff, /* dst_mask */ | |
b34976b6 | 763 | FALSE), /* pcrel_offset */ |
252b5132 | 764 | |
c3668558 | 765 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
766 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
767 | 16, /* rightshift */ | |
768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 16, /* bitsize */ | |
b34976b6 | 770 | FALSE, /* pc_relative */ |
252b5132 | 771 | 0, /* bitpos */ |
86c95733 | 772 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 773 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 774 | "R_PPC_SECTOFF_HA", /* name */ |
b34976b6 | 775 | FALSE, /* partial_inplace */ |
252b5132 RH |
776 | 0, /* src_mask */ |
777 | 0xffff, /* dst_mask */ | |
b34976b6 | 778 | FALSE), /* pcrel_offset */ |
252b5132 | 779 | |
727fc41e | 780 | /* Marker relocs for TLS. */ |
7619e7c7 | 781 | HOWTO (R_PPC_TLS, |
252b5132 RH |
782 | 0, /* rightshift */ |
783 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 32, /* bitsize */ | |
b34976b6 | 785 | FALSE, /* pc_relative */ |
252b5132 | 786 | 0, /* bitpos */ |
7619e7c7 | 787 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 788 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
789 | "R_PPC_TLS", /* name */ |
790 | FALSE, /* partial_inplace */ | |
791 | 0, /* src_mask */ | |
792 | 0, /* dst_mask */ | |
793 | FALSE), /* pcrel_offset */ | |
794 | ||
727fc41e AM |
795 | HOWTO (R_PPC_TLSGD, |
796 | 0, /* rightshift */ | |
797 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
798 | 32, /* bitsize */ | |
799 | FALSE, /* pc_relative */ | |
800 | 0, /* bitpos */ | |
801 | complain_overflow_dont, /* complain_on_overflow */ | |
802 | bfd_elf_generic_reloc, /* special_function */ | |
803 | "R_PPC_TLSGD", /* name */ | |
804 | FALSE, /* partial_inplace */ | |
805 | 0, /* src_mask */ | |
806 | 0, /* dst_mask */ | |
807 | FALSE), /* pcrel_offset */ | |
808 | ||
809 | HOWTO (R_PPC_TLSLD, | |
810 | 0, /* rightshift */ | |
811 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
812 | 32, /* bitsize */ | |
813 | FALSE, /* pc_relative */ | |
814 | 0, /* bitpos */ | |
815 | complain_overflow_dont, /* complain_on_overflow */ | |
816 | bfd_elf_generic_reloc, /* special_function */ | |
817 | "R_PPC_TLSLD", /* name */ | |
818 | FALSE, /* partial_inplace */ | |
819 | 0, /* src_mask */ | |
820 | 0, /* dst_mask */ | |
821 | FALSE), /* pcrel_offset */ | |
822 | ||
7619e7c7 AM |
823 | /* Computes the load module index of the load module that contains the |
824 | definition of its TLS sym. */ | |
825 | HOWTO (R_PPC_DTPMOD32, | |
826 | 0, /* rightshift */ | |
827 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
828 | 32, /* bitsize */ | |
829 | FALSE, /* pc_relative */ | |
830 | 0, /* bitpos */ | |
831 | complain_overflow_dont, /* complain_on_overflow */ | |
832 | ppc_elf_unhandled_reloc, /* special_function */ | |
833 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 834 | FALSE, /* partial_inplace */ |
252b5132 RH |
835 | 0, /* src_mask */ |
836 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 837 | FALSE), /* pcrel_offset */ |
252b5132 | 838 | |
7619e7c7 AM |
839 | /* Computes a dtv-relative displacement, the difference between the value |
840 | of sym+add and the base address of the thread-local storage block that | |
841 | contains the definition of sym, minus 0x8000. */ | |
842 | HOWTO (R_PPC_DTPREL32, | |
843 | 0, /* rightshift */ | |
844 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
845 | 32, /* bitsize */ | |
846 | FALSE, /* pc_relative */ | |
847 | 0, /* bitpos */ | |
848 | complain_overflow_dont, /* complain_on_overflow */ | |
849 | ppc_elf_unhandled_reloc, /* special_function */ | |
850 | "R_PPC_DTPREL32", /* name */ | |
851 | FALSE, /* partial_inplace */ | |
852 | 0, /* src_mask */ | |
853 | 0xffffffff, /* dst_mask */ | |
854 | FALSE), /* pcrel_offset */ | |
855 | ||
856 | /* A 16 bit dtprel reloc. */ | |
857 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
858 | 0, /* rightshift */ |
859 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
860 | 16, /* bitsize */ | |
b34976b6 | 861 | FALSE, /* pc_relative */ |
252b5132 | 862 | 0, /* bitpos */ |
7619e7c7 AM |
863 | complain_overflow_signed, /* complain_on_overflow */ |
864 | ppc_elf_unhandled_reloc, /* special_function */ | |
865 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 866 | FALSE, /* partial_inplace */ |
252b5132 RH |
867 | 0, /* src_mask */ |
868 | 0xffff, /* dst_mask */ | |
b34976b6 | 869 | FALSE), /* pcrel_offset */ |
252b5132 | 870 | |
7619e7c7 AM |
871 | /* Like DTPREL16, but no overflow. */ |
872 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
873 | 0, /* rightshift */ |
874 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
875 | 16, /* bitsize */ | |
b34976b6 | 876 | FALSE, /* pc_relative */ |
252b5132 | 877 | 0, /* bitpos */ |
7619e7c7 AM |
878 | complain_overflow_dont, /* complain_on_overflow */ |
879 | ppc_elf_unhandled_reloc, /* special_function */ | |
880 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 881 | FALSE, /* partial_inplace */ |
252b5132 RH |
882 | 0, /* src_mask */ |
883 | 0xffff, /* dst_mask */ | |
b34976b6 | 884 | FALSE), /* pcrel_offset */ |
252b5132 | 885 | |
7619e7c7 AM |
886 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
887 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
888 | 16, /* rightshift */ |
889 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
890 | 16, /* bitsize */ | |
b34976b6 | 891 | FALSE, /* pc_relative */ |
252b5132 RH |
892 | 0, /* bitpos */ |
893 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
894 | ppc_elf_unhandled_reloc, /* special_function */ |
895 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 896 | FALSE, /* partial_inplace */ |
252b5132 RH |
897 | 0, /* src_mask */ |
898 | 0xffff, /* dst_mask */ | |
b34976b6 | 899 | FALSE), /* pcrel_offset */ |
252b5132 | 900 | |
7619e7c7 AM |
901 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
902 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
903 | 16, /* rightshift */ |
904 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 16, /* bitsize */ | |
b34976b6 | 906 | FALSE, /* pc_relative */ |
252b5132 RH |
907 | 0, /* bitpos */ |
908 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
909 | ppc_elf_unhandled_reloc, /* special_function */ |
910 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 911 | FALSE, /* partial_inplace */ |
252b5132 RH |
912 | 0, /* src_mask */ |
913 | 0xffff, /* dst_mask */ | |
b34976b6 | 914 | FALSE), /* pcrel_offset */ |
252b5132 | 915 | |
7619e7c7 AM |
916 | /* Computes a tp-relative displacement, the difference between the value of |
917 | sym+add and the value of the thread pointer (r13). */ | |
918 | HOWTO (R_PPC_TPREL32, | |
919 | 0, /* rightshift */ | |
920 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 32, /* bitsize */ | |
922 | FALSE, /* pc_relative */ | |
923 | 0, /* bitpos */ | |
924 | complain_overflow_dont, /* complain_on_overflow */ | |
925 | ppc_elf_unhandled_reloc, /* special_function */ | |
926 | "R_PPC_TPREL32", /* name */ | |
927 | FALSE, /* partial_inplace */ | |
928 | 0, /* src_mask */ | |
929 | 0xffffffff, /* dst_mask */ | |
930 | FALSE), /* pcrel_offset */ | |
931 | ||
932 | /* A 16 bit tprel reloc. */ | |
933 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
934 | 0, /* rightshift */ |
935 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
936 | 16, /* bitsize */ | |
b34976b6 | 937 | FALSE, /* pc_relative */ |
252b5132 | 938 | 0, /* bitpos */ |
7619e7c7 AM |
939 | complain_overflow_signed, /* complain_on_overflow */ |
940 | ppc_elf_unhandled_reloc, /* special_function */ | |
941 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 942 | FALSE, /* partial_inplace */ |
252b5132 RH |
943 | 0, /* src_mask */ |
944 | 0xffff, /* dst_mask */ | |
b34976b6 | 945 | FALSE), /* pcrel_offset */ |
252b5132 | 946 | |
7619e7c7 AM |
947 | /* Like TPREL16, but no overflow. */ |
948 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
949 | 0, /* rightshift */ |
950 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
951 | 16, /* bitsize */ | |
b34976b6 | 952 | FALSE, /* pc_relative */ |
252b5132 | 953 | 0, /* bitpos */ |
7619e7c7 AM |
954 | complain_overflow_dont, /* complain_on_overflow */ |
955 | ppc_elf_unhandled_reloc, /* special_function */ | |
956 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 957 | FALSE, /* partial_inplace */ |
252b5132 RH |
958 | 0, /* src_mask */ |
959 | 0xffff, /* dst_mask */ | |
b34976b6 | 960 | FALSE), /* pcrel_offset */ |
252b5132 | 961 | |
7619e7c7 AM |
962 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
963 | HOWTO (R_PPC_TPREL16_HI, | |
964 | 16, /* rightshift */ | |
965 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
966 | 16, /* bitsize */ | |
967 | FALSE, /* pc_relative */ | |
968 | 0, /* bitpos */ | |
969 | complain_overflow_dont, /* complain_on_overflow */ | |
970 | ppc_elf_unhandled_reloc, /* special_function */ | |
971 | "R_PPC_TPREL16_HI", /* name */ | |
972 | FALSE, /* partial_inplace */ | |
973 | 0, /* src_mask */ | |
974 | 0xffff, /* dst_mask */ | |
975 | FALSE), /* pcrel_offset */ | |
976 | ||
977 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
978 | HOWTO (R_PPC_TPREL16_HA, | |
979 | 16, /* rightshift */ | |
980 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
981 | 16, /* bitsize */ | |
982 | FALSE, /* pc_relative */ | |
983 | 0, /* bitpos */ | |
984 | complain_overflow_dont, /* complain_on_overflow */ | |
985 | ppc_elf_unhandled_reloc, /* special_function */ | |
986 | "R_PPC_TPREL16_HA", /* name */ | |
987 | FALSE, /* partial_inplace */ | |
988 | 0, /* src_mask */ | |
989 | 0xffff, /* dst_mask */ | |
990 | FALSE), /* pcrel_offset */ | |
991 | ||
992 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
993 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
994 | to the first entry. */ | |
995 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
996 | 0, /* rightshift */ |
997 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
998 | 16, /* bitsize */ | |
b34976b6 | 999 | FALSE, /* pc_relative */ |
252b5132 RH |
1000 | 0, /* bitpos */ |
1001 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1002 | ppc_elf_unhandled_reloc, /* special_function */ |
1003 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 1004 | FALSE, /* partial_inplace */ |
252b5132 RH |
1005 | 0, /* src_mask */ |
1006 | 0xffff, /* dst_mask */ | |
b34976b6 | 1007 | FALSE), /* pcrel_offset */ |
252b5132 | 1008 | |
7619e7c7 AM |
1009 | /* Like GOT_TLSGD16, but no overflow. */ |
1010 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1011 | 0, /* rightshift */ |
7619e7c7 | 1012 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1013 | 16, /* bitsize */ |
b34976b6 | 1014 | FALSE, /* pc_relative */ |
252b5132 | 1015 | 0, /* bitpos */ |
7619e7c7 AM |
1016 | complain_overflow_dont, /* complain_on_overflow */ |
1017 | ppc_elf_unhandled_reloc, /* special_function */ | |
1018 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1019 | FALSE, /* partial_inplace */ |
252b5132 RH |
1020 | 0, /* src_mask */ |
1021 | 0xffff, /* dst_mask */ | |
b34976b6 | 1022 | FALSE), /* pcrel_offset */ |
252b5132 | 1023 | |
7619e7c7 AM |
1024 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1025 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1026 | 16, /* rightshift */ | |
1027 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 16, /* bitsize */ | |
1029 | FALSE, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_dont, /* complain_on_overflow */ | |
1032 | ppc_elf_unhandled_reloc, /* special_function */ | |
1033 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1034 | FALSE, /* partial_inplace */ | |
1035 | 0, /* src_mask */ | |
1036 | 0xffff, /* dst_mask */ | |
1037 | FALSE), /* pcrel_offset */ | |
252b5132 | 1038 | |
7619e7c7 AM |
1039 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1040 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1041 | 16, /* rightshift */ | |
1042 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1043 | 16, /* bitsize */ | |
1044 | FALSE, /* pc_relative */ | |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont, /* complain_on_overflow */ | |
1047 | ppc_elf_unhandled_reloc, /* special_function */ | |
1048 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1049 | FALSE, /* partial_inplace */ | |
1050 | 0, /* src_mask */ | |
1051 | 0xffff, /* dst_mask */ | |
1052 | FALSE), /* pcrel_offset */ | |
1053 | ||
1054 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1055 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1056 | first entry. */ | |
1057 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1058 | 0, /* rightshift */ |
1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1060 | 16, /* bitsize */ | |
7619e7c7 | 1061 | FALSE, /* pc_relative */ |
252b5132 RH |
1062 | 0, /* bitpos */ |
1063 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1064 | ppc_elf_unhandled_reloc, /* special_function */ |
1065 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1066 | FALSE, /* partial_inplace */ |
252b5132 RH |
1067 | 0, /* src_mask */ |
1068 | 0xffff, /* dst_mask */ | |
b34976b6 | 1069 | FALSE), /* pcrel_offset */ |
252b5132 | 1070 | |
7619e7c7 AM |
1071 | /* Like GOT_TLSLD16, but no overflow. */ |
1072 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1073 | 0, /* rightshift */ |
7619e7c7 AM |
1074 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1075 | 16, /* bitsize */ | |
b34976b6 | 1076 | FALSE, /* pc_relative */ |
252b5132 RH |
1077 | 0, /* bitpos */ |
1078 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1079 | ppc_elf_unhandled_reloc, /* special_function */ |
1080 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1081 | FALSE, /* partial_inplace */ |
252b5132 | 1082 | 0, /* src_mask */ |
7619e7c7 | 1083 | 0xffff, /* dst_mask */ |
b34976b6 | 1084 | FALSE), /* pcrel_offset */ |
252b5132 | 1085 | |
7619e7c7 AM |
1086 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1087 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1088 | 16, /* rightshift */ | |
1089 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1090 | 16, /* bitsize */ | |
b34976b6 | 1091 | FALSE, /* pc_relative */ |
252b5132 RH |
1092 | 0, /* bitpos */ |
1093 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1094 | ppc_elf_unhandled_reloc, /* special_function */ |
1095 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1096 | FALSE, /* partial_inplace */ |
252b5132 | 1097 | 0, /* src_mask */ |
7619e7c7 | 1098 | 0xffff, /* dst_mask */ |
b34976b6 | 1099 | FALSE), /* pcrel_offset */ |
252b5132 | 1100 | |
7619e7c7 AM |
1101 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1102 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1103 | 16, /* rightshift */ | |
1104 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_dont, /* complain_on_overflow */ | |
1109 | ppc_elf_unhandled_reloc, /* special_function */ | |
1110 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0, /* src_mask */ | |
1113 | 0xffff, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
1116 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1117 | the offset to the entry. */ | |
1118 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1119 | 0, /* rightshift */ |
1120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
b34976b6 | 1122 | FALSE, /* pc_relative */ |
252b5132 RH |
1123 | 0, /* bitpos */ |
1124 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1125 | ppc_elf_unhandled_reloc, /* special_function */ |
1126 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1127 | FALSE, /* partial_inplace */ |
252b5132 RH |
1128 | 0, /* src_mask */ |
1129 | 0xffff, /* dst_mask */ | |
b34976b6 | 1130 | FALSE), /* pcrel_offset */ |
252b5132 | 1131 | |
7619e7c7 AM |
1132 | /* Like GOT_DTPREL16, but no overflow. */ |
1133 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1134 | 0, /* rightshift */ | |
1135 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 16, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont, /* complain_on_overflow */ | |
1140 | ppc_elf_unhandled_reloc, /* special_function */ | |
1141 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0, /* src_mask */ | |
1144 | 0xffff, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
252b5132 | 1146 | |
7619e7c7 AM |
1147 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1148 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1149 | 16, /* rightshift */ | |
1150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 16, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_dont, /* complain_on_overflow */ | |
1155 | ppc_elf_unhandled_reloc, /* special_function */ | |
1156 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0, /* src_mask */ | |
1159 | 0xffff, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
252b5132 | 1161 | |
7619e7c7 AM |
1162 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1163 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1164 | 16, /* rightshift */ | |
1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 16, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_dont, /* complain_on_overflow */ | |
1170 | ppc_elf_unhandled_reloc, /* special_function */ | |
1171 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xffff, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
c3668558 | 1176 | |
7619e7c7 AM |
1177 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1178 | offset to the entry. */ | |
1179 | HOWTO (R_PPC_GOT_TPREL16, | |
1180 | 0, /* rightshift */ | |
1181 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1182 | 16, /* bitsize */ | |
1183 | FALSE, /* pc_relative */ | |
1184 | 0, /* bitpos */ | |
1185 | complain_overflow_signed, /* complain_on_overflow */ | |
1186 | ppc_elf_unhandled_reloc, /* special_function */ | |
1187 | "R_PPC_GOT_TPREL16", /* name */ | |
1188 | FALSE, /* partial_inplace */ | |
1189 | 0, /* src_mask */ | |
1190 | 0xffff, /* dst_mask */ | |
1191 | FALSE), /* pcrel_offset */ | |
1192 | ||
1193 | /* Like GOT_TPREL16, but no overflow. */ | |
1194 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1195 | 0, /* rightshift */ | |
1196 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1197 | 16, /* bitsize */ | |
1198 | FALSE, /* pc_relative */ | |
1199 | 0, /* bitpos */ | |
1200 | complain_overflow_dont, /* complain_on_overflow */ | |
1201 | ppc_elf_unhandled_reloc, /* special_function */ | |
1202 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1203 | FALSE, /* partial_inplace */ | |
1204 | 0, /* src_mask */ | |
1205 | 0xffff, /* dst_mask */ | |
1206 | FALSE), /* pcrel_offset */ | |
1207 | ||
1208 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1209 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1210 | 16, /* rightshift */ | |
1211 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1212 | 16, /* bitsize */ | |
1213 | FALSE, /* pc_relative */ | |
1214 | 0, /* bitpos */ | |
1215 | complain_overflow_dont, /* complain_on_overflow */ | |
1216 | ppc_elf_unhandled_reloc, /* special_function */ | |
1217 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1218 | FALSE, /* partial_inplace */ | |
1219 | 0, /* src_mask */ | |
1220 | 0xffff, /* dst_mask */ | |
1221 | FALSE), /* pcrel_offset */ | |
1222 | ||
1223 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1224 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1225 | 16, /* rightshift */ | |
1226 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1227 | 16, /* bitsize */ | |
1228 | FALSE, /* pc_relative */ | |
1229 | 0, /* bitpos */ | |
1230 | complain_overflow_dont, /* complain_on_overflow */ | |
1231 | ppc_elf_unhandled_reloc, /* special_function */ | |
1232 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1233 | FALSE, /* partial_inplace */ | |
1234 | 0, /* src_mask */ | |
1235 | 0xffff, /* dst_mask */ | |
1236 | FALSE), /* pcrel_offset */ | |
1237 | ||
1238 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1239 | in the SVR4 ELF ABI. */ | |
1240 | ||
1241 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1242 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1243 | 0, /* rightshift */ | |
1244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1245 | 32, /* bitsize */ | |
1246 | FALSE, /* pc_relative */ | |
1247 | 0, /* bitpos */ | |
86c95733 | 1248 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1249 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1250 | "R_PPC_EMB_NADDR32", /* name */ |
1251 | FALSE, /* partial_inplace */ | |
1252 | 0, /* src_mask */ | |
1253 | 0xffffffff, /* dst_mask */ | |
1254 | FALSE), /* pcrel_offset */ | |
1255 | ||
1256 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1257 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1258 | 0, /* rightshift */ | |
1259 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1260 | 16, /* bitsize */ | |
1261 | FALSE, /* pc_relative */ | |
1262 | 0, /* bitpos */ | |
86c95733 | 1263 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1264 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1265 | "R_PPC_EMB_NADDR16", /* name */ |
1266 | FALSE, /* partial_inplace */ | |
1267 | 0, /* src_mask */ | |
1268 | 0xffff, /* dst_mask */ | |
1269 | FALSE), /* pcrel_offset */ | |
1270 | ||
1271 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1272 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1273 | 0, /* rightshift */ | |
1274 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1275 | 16, /* bitsize */ | |
1276 | FALSE, /* pc_relative */ | |
1277 | 0, /* bitpos */ | |
1278 | complain_overflow_dont,/* complain_on_overflow */ | |
3ce51288 | 1279 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1280 | "R_PPC_EMB_ADDR16_LO", /* name */ |
1281 | FALSE, /* partial_inplace */ | |
1282 | 0, /* src_mask */ | |
1283 | 0xffff, /* dst_mask */ | |
1284 | FALSE), /* pcrel_offset */ | |
1285 | ||
1286 | /* The high order 16 bits of the addend minus the symbol. */ | |
1287 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1288 | 16, /* rightshift */ | |
1289 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1290 | 16, /* bitsize */ | |
1291 | FALSE, /* pc_relative */ | |
1292 | 0, /* bitpos */ | |
1293 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1294 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1295 | "R_PPC_EMB_NADDR16_HI", /* name */ |
1296 | FALSE, /* partial_inplace */ | |
1297 | 0, /* src_mask */ | |
1298 | 0xffff, /* dst_mask */ | |
1299 | FALSE), /* pcrel_offset */ | |
1300 | ||
1301 | /* The high order 16 bits of the result of the addend minus the address, | |
1302 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1303 | is negative. */ | |
1304 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1305 | 16, /* rightshift */ | |
1306 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1307 | 16, /* bitsize */ | |
1308 | FALSE, /* pc_relative */ | |
1309 | 0, /* bitpos */ | |
1310 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1311 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1312 | "R_PPC_EMB_NADDR16_HA", /* name */ |
1313 | FALSE, /* partial_inplace */ | |
1314 | 0, /* src_mask */ | |
1315 | 0xffff, /* dst_mask */ | |
1316 | FALSE), /* pcrel_offset */ | |
1317 | ||
1318 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1319 | address in the .sdata section, and returning the offset from | |
1320 | _SDA_BASE_ for that relocation. */ | |
1321 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1322 | 0, /* rightshift */ | |
1323 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1324 | 16, /* bitsize */ | |
1325 | FALSE, /* pc_relative */ | |
1326 | 0, /* bitpos */ | |
bd6c6e2b | 1327 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1328 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1329 | "R_PPC_EMB_SDAI16", /* name */ |
1330 | FALSE, /* partial_inplace */ | |
1331 | 0, /* src_mask */ | |
1332 | 0xffff, /* dst_mask */ | |
1333 | FALSE), /* pcrel_offset */ | |
1334 | ||
1335 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1336 | address in the .sdata2 section, and returning the offset from | |
1337 | _SDA2_BASE_ for that relocation. */ | |
1338 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1339 | 0, /* rightshift */ | |
1340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1341 | 16, /* bitsize */ | |
1342 | FALSE, /* pc_relative */ | |
1343 | 0, /* bitpos */ | |
bd6c6e2b | 1344 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1345 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1346 | "R_PPC_EMB_SDA2I16", /* name */ |
1347 | FALSE, /* partial_inplace */ | |
1348 | 0, /* src_mask */ | |
1349 | 0xffff, /* dst_mask */ | |
1350 | FALSE), /* pcrel_offset */ | |
1351 | ||
1352 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1353 | small data items. */ | |
1354 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1355 | 0, /* rightshift */ | |
1356 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1357 | 16, /* bitsize */ | |
1358 | FALSE, /* pc_relative */ | |
1359 | 0, /* bitpos */ | |
1360 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1361 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1362 | "R_PPC_EMB_SDA2REL", /* name */ |
1363 | FALSE, /* partial_inplace */ | |
1364 | 0, /* src_mask */ | |
1365 | 0xffff, /* dst_mask */ | |
1366 | FALSE), /* pcrel_offset */ | |
1367 | ||
1368 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1369 | signed offset from the appropriate base, and filling in the register | |
1370 | field with the appropriate register (0, 2, or 13). */ | |
1371 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1372 | 0, /* rightshift */ | |
1373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 16, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1378 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1379 | "R_PPC_EMB_SDA21", /* name */ |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0xffff, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
1385 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1386 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1387 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1388 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1389 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1390 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1391 | ||
1392 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1393 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1394 | register field with the appropriate register (0, 2, or 13). */ | |
1395 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1396 | 0, /* rightshift */ | |
1397 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1398 | 16, /* bitsize */ | |
ddfd6795 | 1399 | FALSE, /* pc_relative */ |
25dbc73a AM |
1400 | 0, /* bitpos */ |
1401 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1402 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1403 | "R_PPC_EMB_RELSDA", /* name */ |
1404 | FALSE, /* partial_inplace */ | |
1405 | 0, /* src_mask */ | |
1406 | 0xffff, /* dst_mask */ | |
1407 | FALSE), /* pcrel_offset */ | |
1408 | ||
b9c361e0 JL |
1409 | /* A relative 8 bit branch. */ |
1410 | HOWTO (R_PPC_VLE_REL8, /* type */ | |
1411 | 1, /* rightshift */ | |
1412 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1413 | 8, /* bitsize */ | |
1414 | TRUE, /* pc_relative */ | |
1415 | 0, /* bitpos */ | |
1416 | complain_overflow_signed, /* complain_on_overflow */ | |
1417 | bfd_elf_generic_reloc, /* special_function */ | |
1418 | "R_PPC_VLE_REL8", /* name */ | |
1419 | FALSE, /* partial_inplace */ | |
1420 | 0, /* src_mask */ | |
1421 | 0xff, /* dst_mask */ | |
1422 | TRUE), /* pcrel_offset */ | |
68ffbac6 | 1423 | |
b9c361e0 JL |
1424 | /* A relative 15 bit branch. */ |
1425 | HOWTO (R_PPC_VLE_REL15, /* type */ | |
1426 | 1, /* rightshift */ | |
1427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1428 | 15, /* bitsize */ | |
1429 | TRUE, /* pc_relative */ | |
1430 | 1, /* bitpos */ | |
1431 | complain_overflow_signed, /* complain_on_overflow */ | |
1432 | bfd_elf_generic_reloc, /* special_function */ | |
1433 | "R_PPC_VLE_REL15", /* name */ | |
1434 | FALSE, /* partial_inplace */ | |
1435 | 0, /* src_mask */ | |
dfdaec14 | 1436 | 0xfffe, /* dst_mask */ |
b9c361e0 JL |
1437 | TRUE), /* pcrel_offset */ |
1438 | ||
68ffbac6 | 1439 | /* A relative 24 bit branch. */ |
b9c361e0 JL |
1440 | HOWTO (R_PPC_VLE_REL24, /* type */ |
1441 | 1, /* rightshift */ | |
1442 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1443 | 24, /* bitsize */ | |
1444 | TRUE, /* pc_relative */ | |
1445 | 1, /* bitpos */ | |
1446 | complain_overflow_signed, /* complain_on_overflow */ | |
1447 | bfd_elf_generic_reloc, /* special_function */ | |
1448 | "R_PPC_VLE_REL24", /* name */ | |
1449 | FALSE, /* partial_inplace */ | |
1450 | 0, /* src_mask */ | |
1451 | 0x1fffffe, /* dst_mask */ | |
1452 | TRUE), /* pcrel_offset */ | |
1453 | ||
1454 | /* The 16 LSBS in split16a format. */ | |
1455 | HOWTO (R_PPC_VLE_LO16A, /* type */ | |
1456 | 0, /* rightshift */ | |
1457 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1458 | 16, /* bitsize */ |
bdaacd3a | 1459 | FALSE, /* pc_relative */ |
b9c361e0 | 1460 | 0, /* bitpos */ |
86c95733 | 1461 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1462 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1463 | "R_PPC_VLE_LO16A", /* name */ |
1464 | FALSE, /* partial_inplace */ | |
1465 | 0, /* src_mask */ | |
08dc996f | 1466 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1467 | FALSE), /* pcrel_offset */ |
1468 | ||
1469 | /* The 16 LSBS in split16d format. */ | |
1470 | HOWTO (R_PPC_VLE_LO16D, /* type */ | |
1471 | 0, /* rightshift */ | |
1472 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1473 | 16, /* bitsize */ |
b9c361e0 JL |
1474 | FALSE, /* pc_relative */ |
1475 | 0, /* bitpos */ | |
86c95733 | 1476 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1477 | ppc_elf_unhandled_reloc, /* special_function */ |
1478 | "R_PPC_VLE_LO16D", /* name */ | |
b9c361e0 JL |
1479 | FALSE, /* partial_inplace */ |
1480 | 0, /* src_mask */ | |
5499c7c7 | 1481 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1482 | FALSE), /* pcrel_offset */ |
1483 | ||
1484 | /* Bits 16-31 split16a format. */ | |
1485 | HOWTO (R_PPC_VLE_HI16A, /* type */ | |
86c95733 | 1486 | 16, /* rightshift */ |
b9c361e0 | 1487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1488 | 16, /* bitsize */ |
b9c361e0 JL |
1489 | FALSE, /* pc_relative */ |
1490 | 0, /* bitpos */ | |
86c95733 | 1491 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1492 | ppc_elf_unhandled_reloc, /* special_function */ |
1493 | "R_PPC_VLE_HI16A", /* name */ | |
b9c361e0 JL |
1494 | FALSE, /* partial_inplace */ |
1495 | 0, /* src_mask */ | |
08dc996f | 1496 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1497 | FALSE), /* pcrel_offset */ |
1498 | ||
1499 | /* Bits 16-31 split16d format. */ | |
1500 | HOWTO (R_PPC_VLE_HI16D, /* type */ | |
86c95733 | 1501 | 16, /* rightshift */ |
b9c361e0 | 1502 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1503 | 16, /* bitsize */ |
b9c361e0 JL |
1504 | FALSE, /* pc_relative */ |
1505 | 0, /* bitpos */ | |
86c95733 | 1506 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1507 | ppc_elf_unhandled_reloc, /* special_function */ |
1508 | "R_PPC_VLE_HI16D", /* name */ | |
b9c361e0 JL |
1509 | FALSE, /* partial_inplace */ |
1510 | 0, /* src_mask */ | |
5499c7c7 | 1511 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1512 | FALSE), /* pcrel_offset */ |
1513 | ||
1514 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
1515 | HOWTO (R_PPC_VLE_HA16A, /* type */ | |
86c95733 | 1516 | 16, /* rightshift */ |
b9c361e0 | 1517 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1518 | 16, /* bitsize */ |
b9c361e0 JL |
1519 | FALSE, /* pc_relative */ |
1520 | 0, /* bitpos */ | |
86c95733 | 1521 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1522 | ppc_elf_unhandled_reloc, /* special_function */ |
1523 | "R_PPC_VLE_HA16A", /* name */ | |
b9c361e0 JL |
1524 | FALSE, /* partial_inplace */ |
1525 | 0, /* src_mask */ | |
08dc996f | 1526 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1527 | FALSE), /* pcrel_offset */ |
1528 | ||
1529 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
1530 | HOWTO (R_PPC_VLE_HA16D, /* type */ | |
86c95733 | 1531 | 16, /* rightshift */ |
b9c361e0 | 1532 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1533 | 16, /* bitsize */ |
b9c361e0 JL |
1534 | FALSE, /* pc_relative */ |
1535 | 0, /* bitpos */ | |
86c95733 | 1536 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1537 | ppc_elf_unhandled_reloc, /* special_function */ |
1538 | "R_PPC_VLE_HA16D", /* name */ | |
b9c361e0 JL |
1539 | FALSE, /* partial_inplace */ |
1540 | 0, /* src_mask */ | |
5499c7c7 | 1541 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1542 | FALSE), /* pcrel_offset */ |
1543 | ||
86c95733 AM |
1544 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
1545 | instructions. If the register base is 0 then the linker changes | |
1546 | the e_add16i to an e_li instruction. */ | |
1547 | HOWTO (R_PPC_VLE_SDA21, /* type */ | |
b9c361e0 JL |
1548 | 0, /* rightshift */ |
1549 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1550 | 16, /* bitsize */ |
b9c361e0 JL |
1551 | FALSE, /* pc_relative */ |
1552 | 0, /* bitpos */ | |
86c95733 | 1553 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 AM |
1554 | ppc_elf_unhandled_reloc, /* special_function */ |
1555 | "R_PPC_VLE_SDA21", /* name */ | |
b9c361e0 JL |
1556 | FALSE, /* partial_inplace */ |
1557 | 0, /* src_mask */ | |
1558 | 0xffff, /* dst_mask */ | |
1559 | FALSE), /* pcrel_offset */ | |
1560 | ||
86c95733 | 1561 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
b9c361e0 JL |
1562 | HOWTO (R_PPC_VLE_SDA21_LO, /* type */ |
1563 | 0, /* rightshift */ | |
1564 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1565 | 16, /* bitsize */ |
b9c361e0 JL |
1566 | FALSE, /* pc_relative */ |
1567 | 0, /* bitpos */ | |
86c95733 | 1568 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1569 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1570 | "R_PPC_VLE_SDA21_LO", /* name */ |
1571 | FALSE, /* partial_inplace */ | |
1572 | 0, /* src_mask */ | |
86c95733 | 1573 | 0xffff, /* dst_mask */ |
b9c361e0 JL |
1574 | FALSE), /* pcrel_offset */ |
1575 | ||
1576 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
1577 | HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */ | |
1578 | 0, /* rightshift */ | |
1579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1580 | 16, /* bitsize */ |
b9c361e0 JL |
1581 | FALSE, /* pc_relative */ |
1582 | 0, /* bitpos */ | |
3ce51288 AM |
1583 | complain_overflow_dont, /* complain_on_overflow */ |
1584 | ppc_elf_unhandled_reloc, /* special_function */ | |
1585 | "R_PPC_VLE_SDAREL_LO16A", /* name */ | |
b9c361e0 JL |
1586 | FALSE, /* partial_inplace */ |
1587 | 0, /* src_mask */ | |
08dc996f | 1588 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1589 | FALSE), /* pcrel_offset */ |
1590 | ||
1591 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
b9c361e0 JL |
1592 | HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */ |
1593 | 0, /* rightshift */ | |
1594 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1595 | 16, /* bitsize */ |
b9c361e0 JL |
1596 | FALSE, /* pc_relative */ |
1597 | 0, /* bitpos */ | |
3ce51288 AM |
1598 | complain_overflow_dont, /* complain_on_overflow */ |
1599 | ppc_elf_unhandled_reloc, /* special_function */ | |
1600 | "R_PPC_VLE_SDAREL_LO16D", /* name */ | |
b9c361e0 JL |
1601 | FALSE, /* partial_inplace */ |
1602 | 0, /* src_mask */ | |
5499c7c7 | 1603 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1604 | FALSE), /* pcrel_offset */ |
1605 | ||
1606 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
3ce51288 | 1607 | HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */ |
86c95733 | 1608 | 16, /* rightshift */ |
b9c361e0 | 1609 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1610 | 16, /* bitsize */ |
b9c361e0 JL |
1611 | FALSE, /* pc_relative */ |
1612 | 0, /* bitpos */ | |
3ce51288 AM |
1613 | complain_overflow_dont, /* complain_on_overflow */ |
1614 | ppc_elf_unhandled_reloc, /* special_function */ | |
1615 | "R_PPC_VLE_SDAREL_HI16A", /* name */ | |
b9c361e0 JL |
1616 | FALSE, /* partial_inplace */ |
1617 | 0, /* src_mask */ | |
08dc996f | 1618 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1619 | FALSE), /* pcrel_offset */ |
1620 | ||
1621 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
3ce51288 | 1622 | HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */ |
86c95733 | 1623 | 16, /* rightshift */ |
b9c361e0 | 1624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1625 | 16, /* bitsize */ |
b9c361e0 JL |
1626 | FALSE, /* pc_relative */ |
1627 | 0, /* bitpos */ | |
3ce51288 AM |
1628 | complain_overflow_dont, /* complain_on_overflow */ |
1629 | ppc_elf_unhandled_reloc, /* special_function */ | |
1630 | "R_PPC_VLE_SDAREL_HI16D", /* name */ | |
b9c361e0 JL |
1631 | FALSE, /* partial_inplace */ |
1632 | 0, /* src_mask */ | |
5499c7c7 | 1633 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1634 | FALSE), /* pcrel_offset */ |
1635 | ||
1636 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
3ce51288 | 1637 | HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */ |
86c95733 | 1638 | 16, /* rightshift */ |
b9c361e0 | 1639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1640 | 16, /* bitsize */ |
b9c361e0 JL |
1641 | FALSE, /* pc_relative */ |
1642 | 0, /* bitpos */ | |
3ce51288 AM |
1643 | complain_overflow_dont, /* complain_on_overflow */ |
1644 | ppc_elf_unhandled_reloc, /* special_function */ | |
1645 | "R_PPC_VLE_SDAREL_HA16A", /* name */ | |
b9c361e0 JL |
1646 | FALSE, /* partial_inplace */ |
1647 | 0, /* src_mask */ | |
08dc996f | 1648 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1649 | FALSE), /* pcrel_offset */ |
1650 | ||
1651 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
3ce51288 | 1652 | HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */ |
86c95733 | 1653 | 16, /* rightshift */ |
b9c361e0 | 1654 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1655 | 16, /* bitsize */ |
b9c361e0 JL |
1656 | FALSE, /* pc_relative */ |
1657 | 0, /* bitpos */ | |
3ce51288 AM |
1658 | complain_overflow_dont, /* complain_on_overflow */ |
1659 | ppc_elf_unhandled_reloc, /* special_function */ | |
1660 | "R_PPC_VLE_SDAREL_HA16D", /* name */ | |
b9c361e0 JL |
1661 | FALSE, /* partial_inplace */ |
1662 | 0, /* src_mask */ | |
5499c7c7 | 1663 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1664 | FALSE), /* pcrel_offset */ |
1665 | ||
83eef883 AFB |
1666 | /* e_li split20 format. */ |
1667 | HOWTO (R_PPC_VLE_ADDR20, /* type */ | |
1668 | 16, /* rightshift */ | |
1669 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1670 | 20, /* bitsize */ | |
1671 | FALSE, /* pc_relative */ | |
1672 | 0, /* bitpos */ | |
1673 | complain_overflow_dont, /* complain_on_overflow */ | |
1674 | bfd_elf_generic_reloc, /* special_function */ | |
1675 | "R_PPC_VLE_ADDR20", /* name */ | |
1676 | FALSE, /* partial_inplace */ | |
1677 | 0, /* src_mask */ | |
1678 | 0x1f07ff, /* dst_mask */ | |
1679 | FALSE), /* pcrel_offset */ | |
1680 | ||
e054468f AM |
1681 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1682 | 0, /* rightshift */ | |
1683 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1684 | 32, /* bitsize */ | |
1685 | FALSE, /* pc_relative */ | |
1686 | 0, /* bitpos */ | |
86c95733 | 1687 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1688 | ppc_elf_unhandled_reloc, /* special_function */ |
e054468f AM |
1689 | "R_PPC_IRELATIVE", /* name */ |
1690 | FALSE, /* partial_inplace */ | |
1691 | 0, /* src_mask */ | |
1692 | 0xffffffff, /* dst_mask */ | |
1693 | FALSE), /* pcrel_offset */ | |
1694 | ||
d7128ce4 AM |
1695 | /* A 16 bit relative relocation. */ |
1696 | HOWTO (R_PPC_REL16, /* type */ | |
1697 | 0, /* rightshift */ | |
1698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1699 | 16, /* bitsize */ | |
1700 | TRUE, /* pc_relative */ | |
1701 | 0, /* bitpos */ | |
86c95733 | 1702 | complain_overflow_signed, /* complain_on_overflow */ |
d7128ce4 AM |
1703 | bfd_elf_generic_reloc, /* special_function */ |
1704 | "R_PPC_REL16", /* name */ | |
1705 | FALSE, /* partial_inplace */ | |
1706 | 0, /* src_mask */ | |
1707 | 0xffff, /* dst_mask */ | |
1708 | TRUE), /* pcrel_offset */ | |
1709 | ||
1710 | /* A 16 bit relative relocation without overflow. */ | |
1711 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1712 | 0, /* rightshift */ | |
1713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1714 | 16, /* bitsize */ | |
1715 | TRUE, /* pc_relative */ | |
1716 | 0, /* bitpos */ | |
1717 | complain_overflow_dont,/* complain_on_overflow */ | |
1718 | bfd_elf_generic_reloc, /* special_function */ | |
1719 | "R_PPC_REL16_LO", /* name */ | |
1720 | FALSE, /* partial_inplace */ | |
1721 | 0, /* src_mask */ | |
1722 | 0xffff, /* dst_mask */ | |
1723 | TRUE), /* pcrel_offset */ | |
1724 | ||
1725 | /* The high order 16 bits of a relative address. */ | |
1726 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1727 | 16, /* rightshift */ | |
1728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1729 | 16, /* bitsize */ | |
1730 | TRUE, /* pc_relative */ | |
1731 | 0, /* bitpos */ | |
1732 | complain_overflow_dont, /* complain_on_overflow */ | |
1733 | bfd_elf_generic_reloc, /* special_function */ | |
1734 | "R_PPC_REL16_HI", /* name */ | |
1735 | FALSE, /* partial_inplace */ | |
1736 | 0, /* src_mask */ | |
1737 | 0xffff, /* dst_mask */ | |
1738 | TRUE), /* pcrel_offset */ | |
1739 | ||
1740 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1741 | the low 16 bits, treated as a signed number, is negative. */ | |
1742 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1743 | 16, /* rightshift */ | |
1744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1745 | 16, /* bitsize */ | |
1746 | TRUE, /* pc_relative */ | |
1747 | 0, /* bitpos */ | |
1748 | complain_overflow_dont, /* complain_on_overflow */ | |
1749 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1750 | "R_PPC_REL16_HA", /* name */ | |
1751 | FALSE, /* partial_inplace */ | |
1752 | 0, /* src_mask */ | |
1753 | 0xffff, /* dst_mask */ | |
1754 | TRUE), /* pcrel_offset */ | |
1755 | ||
a680de9a PB |
1756 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
1757 | HOWTO (R_PPC_REL16DX_HA, /* type */ | |
1758 | 16, /* rightshift */ | |
1759 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1760 | 16, /* bitsize */ | |
1761 | TRUE, /* pc_relative */ | |
1762 | 0, /* bitpos */ | |
1763 | complain_overflow_signed, /* complain_on_overflow */ | |
1764 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1765 | "R_PPC_REL16DX_HA", /* name */ | |
1766 | FALSE, /* partial_inplace */ | |
1767 | 0, /* src_mask */ | |
1768 | 0x1fffc1, /* dst_mask */ | |
1769 | TRUE), /* pcrel_offset */ | |
1770 | ||
7ba71655 AM |
1771 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
1772 | HOWTO (R_PPC_16DX_HA, /* type */ | |
1773 | 16, /* rightshift */ | |
1774 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1775 | 16, /* bitsize */ | |
1776 | FALSE, /* pc_relative */ | |
1777 | 0, /* bitpos */ | |
1778 | complain_overflow_signed, /* complain_on_overflow */ | |
1779 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1780 | "R_PPC_16DX_HA", /* name */ | |
1781 | FALSE, /* partial_inplace */ | |
1782 | 0, /* src_mask */ | |
1783 | 0x1fffc1, /* dst_mask */ | |
1784 | FALSE), /* pcrel_offset */ | |
1785 | ||
25dbc73a AM |
1786 | /* GNU extension to record C++ vtable hierarchy. */ |
1787 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1788 | 0, /* rightshift */ | |
1789 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1790 | 0, /* bitsize */ | |
1791 | FALSE, /* pc_relative */ | |
1792 | 0, /* bitpos */ | |
1793 | complain_overflow_dont, /* complain_on_overflow */ | |
1794 | NULL, /* special_function */ | |
1795 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1796 | FALSE, /* partial_inplace */ | |
1797 | 0, /* src_mask */ | |
1798 | 0, /* dst_mask */ | |
1799 | FALSE), /* pcrel_offset */ | |
1800 | ||
1801 | /* GNU extension to record C++ vtable member usage. */ | |
1802 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1803 | 0, /* rightshift */ | |
1804 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1805 | 0, /* bitsize */ | |
1806 | FALSE, /* pc_relative */ | |
1807 | 0, /* bitpos */ | |
1808 | complain_overflow_dont, /* complain_on_overflow */ | |
1809 | NULL, /* special_function */ | |
1810 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1811 | FALSE, /* partial_inplace */ |
1812 | 0, /* src_mask */ | |
25dbc73a | 1813 | 0, /* dst_mask */ |
7619e7c7 AM |
1814 | FALSE), /* pcrel_offset */ |
1815 | ||
25dbc73a AM |
1816 | /* Phony reloc to handle AIX style TOC entries. */ |
1817 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1818 | 0, /* rightshift */ |
1819 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1820 | 16, /* bitsize */ | |
1821 | FALSE, /* pc_relative */ | |
1822 | 0, /* bitpos */ | |
25dbc73a | 1823 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1824 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a | 1825 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1826 | FALSE, /* partial_inplace */ |
1827 | 0, /* src_mask */ | |
1828 | 0xffff, /* dst_mask */ | |
1829 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1830 | }; |
1831 | \f | |
1832 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1833 | ||
1834 | static void | |
1835 | ppc_elf_howto_init (void) | |
1836 | { | |
1837 | unsigned int i, type; | |
1838 | ||
1839 | for (i = 0; | |
1840 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1841 | i++) | |
1842 | { | |
1843 | type = ppc_elf_howto_raw[i].type; | |
1844 | if (type >= (sizeof (ppc_elf_howto_table) | |
1845 | / sizeof (ppc_elf_howto_table[0]))) | |
1846 | abort (); | |
1847 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | static reloc_howto_type * | |
1852 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1853 | bfd_reloc_code_real_type code) | |
1854 | { | |
1855 | enum elf_ppc_reloc_type r; | |
1856 | ||
1857 | /* Initialize howto table if not already done. */ | |
1858 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1859 | ppc_elf_howto_init (); | |
1860 | ||
1861 | switch (code) | |
1862 | { | |
1863 | default: | |
1864 | return NULL; | |
1865 | ||
1866 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1867 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1868 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 1869 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 1870 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 1871 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
1872 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
1873 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1874 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1875 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1876 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1877 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1878 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1879 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1880 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1881 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 1882 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 1883 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 1884 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
1885 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
1886 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1887 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1888 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1889 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1890 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1891 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1892 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1893 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1894 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 1895 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
1896 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
1897 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1898 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1899 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 1900 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 1901 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 1902 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
1903 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
1904 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1905 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1906 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 1907 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
1908 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
1909 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1910 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1911 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 1912 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 1913 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 1914 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 1915 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
1916 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
1917 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1918 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1919 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 1920 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 1921 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 1922 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
1923 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
1924 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1925 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1926 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1927 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1928 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1929 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1930 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1931 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1932 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1933 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1934 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1935 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1936 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1937 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1938 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1939 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1940 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1941 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1942 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1943 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1944 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1945 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1946 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1947 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1948 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1949 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1950 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1951 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1952 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1953 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1954 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1955 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1956 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1957 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1958 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
1959 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
1960 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
1961 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
1962 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
1963 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
1964 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
1965 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
1966 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
1967 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
1968 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
1969 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
1970 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
1971 | r = R_PPC_VLE_SDAREL_LO16A; | |
1972 | break; | |
1973 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
1974 | r = R_PPC_VLE_SDAREL_LO16D; | |
1975 | break; | |
1976 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
1977 | r = R_PPC_VLE_SDAREL_HI16A; | |
1978 | break; | |
1979 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
1980 | r = R_PPC_VLE_SDAREL_HI16D; | |
1981 | break; | |
1982 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
1983 | r = R_PPC_VLE_SDAREL_HA16A; | |
1984 | break; | |
1985 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
1986 | r = R_PPC_VLE_SDAREL_HA16D; | |
1987 | break; | |
d7128ce4 AM |
1988 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1989 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1990 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1991 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
7ba71655 | 1992 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break; |
a680de9a | 1993 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
1994 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1995 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1996 | } | |
1997 | ||
1998 | return ppc_elf_howto_table[r]; | |
1999 | }; | |
2000 | ||
157090f7 AM |
2001 | static reloc_howto_type * |
2002 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2003 | const char *r_name) | |
2004 | { | |
2005 | unsigned int i; | |
2006 | ||
2007 | for (i = 0; | |
2008 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
2009 | i++) | |
2010 | if (ppc_elf_howto_raw[i].name != NULL | |
2011 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
2012 | return &ppc_elf_howto_raw[i]; | |
2013 | ||
2014 | return NULL; | |
2015 | } | |
2016 | ||
25dbc73a AM |
2017 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2018 | ||
2019 | static void | |
4aef7643 | 2020 | ppc_elf_info_to_howto (bfd *abfd, |
25dbc73a AM |
2021 | arelent *cache_ptr, |
2022 | Elf_Internal_Rela *dst) | |
2023 | { | |
cd21f5da NC |
2024 | unsigned int r_type; |
2025 | ||
25dbc73a AM |
2026 | /* Initialize howto table if not already done. */ |
2027 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2028 | ppc_elf_howto_init (); | |
2029 | ||
cd21f5da NC |
2030 | r_type = ELF32_R_TYPE (dst->r_info); |
2031 | if (r_type >= R_PPC_max) | |
2032 | { | |
695344c0 | 2033 | /* xgettext:c-format */ |
4eca0228 AM |
2034 | _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"), |
2035 | abfd, r_type); | |
cd21f5da NC |
2036 | bfd_set_error (bfd_error_bad_value); |
2037 | r_type = R_PPC_NONE; | |
2038 | } | |
2039 | cache_ptr->howto = ppc_elf_howto_table[r_type]; | |
375de94a AM |
2040 | |
2041 | /* Just because the above assert didn't trigger doesn't mean that | |
2042 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
2043 | if (!cache_ptr->howto) | |
2044 | { | |
695344c0 | 2045 | /* xgettext:c-format */ |
4eca0228 AM |
2046 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
2047 | abfd, r_type); | |
375de94a AM |
2048 | bfd_set_error (bfd_error_bad_value); |
2049 | ||
2050 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
2051 | } | |
25dbc73a AM |
2052 | } |
2053 | ||
d7128ce4 | 2054 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
2055 | |
2056 | static bfd_reloc_status_type | |
4aef7643 | 2057 | ppc_elf_addr16_ha_reloc (bfd *abfd, |
25dbc73a AM |
2058 | arelent *reloc_entry, |
2059 | asymbol *symbol, | |
4aef7643 | 2060 | void *data, |
25dbc73a AM |
2061 | asection *input_section, |
2062 | bfd *output_bfd, | |
2063 | char **error_message ATTRIBUTE_UNUSED) | |
2064 | { | |
a680de9a PB |
2065 | enum elf_ppc_reloc_type r_type; |
2066 | long insn; | |
2067 | bfd_size_type octets; | |
2068 | bfd_vma value; | |
25dbc73a AM |
2069 | |
2070 | if (output_bfd != NULL) | |
2071 | { | |
2072 | reloc_entry->address += input_section->output_offset; | |
2073 | return bfd_reloc_ok; | |
2074 | } | |
2075 | ||
a680de9a PB |
2076 | reloc_entry->addend += 0x8000; |
2077 | r_type = reloc_entry->howto->type; | |
2078 | if (r_type != R_PPC_REL16DX_HA) | |
2079 | return bfd_reloc_continue; | |
2080 | ||
2081 | value = 0; | |
2082 | if (!bfd_is_com_section (symbol->section)) | |
2083 | value = symbol->value; | |
2084 | value += (reloc_entry->addend | |
2085 | + symbol->section->output_offset | |
2086 | + symbol->section->output_section->vma); | |
2087 | value -= (reloc_entry->address | |
2088 | + input_section->output_offset | |
2089 | + input_section->output_section->vma); | |
2090 | value >>= 16; | |
2091 | ||
2092 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2093 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2094 | insn &= ~0x1fffc1; | |
2095 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2096 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2097 | return bfd_reloc_ok; | |
25dbc73a AM |
2098 | } |
2099 | ||
2100 | static bfd_reloc_status_type | |
2101 | ppc_elf_unhandled_reloc (bfd *abfd, | |
2102 | arelent *reloc_entry, | |
2103 | asymbol *symbol, | |
2104 | void *data, | |
2105 | asection *input_section, | |
2106 | bfd *output_bfd, | |
2107 | char **error_message) | |
2108 | { | |
2109 | /* If this is a relocatable link (output_bfd test tells us), just | |
2110 | call the generic function. Any adjustment will be done at final | |
2111 | link time. */ | |
2112 | if (output_bfd != NULL) | |
2113 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2114 | input_section, output_bfd, error_message); | |
2115 | ||
2116 | if (error_message != NULL) | |
2117 | { | |
2118 | static char buf[60]; | |
2119 | sprintf (buf, _("generic linker can't handle %s"), | |
2120 | reloc_entry->howto->name); | |
2121 | *error_message = buf; | |
2122 | } | |
2123 | return bfd_reloc_dangerous; | |
2124 | } | |
2125 | \f | |
2126 | /* Sections created by the linker. */ | |
2127 | ||
2128 | typedef struct elf_linker_section | |
2129 | { | |
c9a2f333 | 2130 | /* Pointer to the bfd section. */ |
25dbc73a | 2131 | asection *section; |
c9a2f333 AM |
2132 | /* Section name. */ |
2133 | const char *name; | |
2134 | /* Associated bss section name. */ | |
2135 | const char *bss_name; | |
2136 | /* Associated symbol name. */ | |
2137 | const char *sym_name; | |
046183de AM |
2138 | /* Associated symbol. */ |
2139 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
2140 | } elf_linker_section_t; |
2141 | ||
2142 | /* Linked list of allocated pointer entries. This hangs off of the | |
2143 | symbol lists, and provides allows us to return different pointers, | |
2144 | based on different addend's. */ | |
2145 | ||
2146 | typedef struct elf_linker_section_pointers | |
2147 | { | |
2148 | /* next allocated pointer for this symbol */ | |
2149 | struct elf_linker_section_pointers *next; | |
2150 | /* offset of pointer from beginning of section */ | |
2151 | bfd_vma offset; | |
2152 | /* addend used */ | |
2153 | bfd_vma addend; | |
2154 | /* which linker section this is */ | |
2155 | elf_linker_section_t *lsect; | |
25dbc73a AM |
2156 | } elf_linker_section_pointers_t; |
2157 | ||
2158 | struct ppc_elf_obj_tdata | |
2159 | { | |
2160 | struct elf_obj_tdata elf; | |
2161 | ||
2162 | /* A mapping from local symbols to offsets into the various linker | |
2163 | sections added. This is index by the symbol index. */ | |
2164 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
2165 | |
2166 | /* Flags used to auto-detect plt type. */ | |
2167 | unsigned int makes_plt_call : 1; | |
2168 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
2169 | }; |
2170 | ||
2171 | #define ppc_elf_tdata(bfd) \ | |
2172 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 2173 | |
25dbc73a AM |
2174 | #define elf_local_ptr_offsets(bfd) \ |
2175 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 2176 | |
0c8d6e5c AM |
2177 | #define is_ppc_elf(bfd) \ |
2178 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2179 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 2180 | |
25dbc73a | 2181 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 2182 | |
25dbc73a AM |
2183 | static bfd_boolean |
2184 | ppc_elf_mkobject (bfd *abfd) | |
2185 | { | |
0ffa91dd | 2186 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 2187 | PPC32_ELF_DATA); |
25dbc73a | 2188 | } |
7619e7c7 | 2189 | |
14b57c7c AM |
2190 | /* When defaulting arch/mach, decode apuinfo to find a better match. */ |
2191 | ||
2192 | bfd_boolean | |
2193 | _bfd_elf_ppc_set_arch (bfd *abfd) | |
2194 | { | |
2195 | unsigned long mach = 0; | |
2196 | asection *s; | |
2197 | unsigned char *contents; | |
2198 | ||
2199 | if (abfd->arch_info->bits_per_word == 32 | |
2200 | && bfd_big_endian (abfd)) | |
2201 | { | |
2202 | ||
2203 | for (s = abfd->sections; s != NULL; s = s->next) | |
2204 | if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0) | |
2205 | break; | |
2206 | if (s != NULL) | |
2207 | mach = bfd_mach_ppc_vle; | |
2208 | } | |
2209 | ||
2210 | if (mach == 0) | |
2211 | { | |
2212 | s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2213 | if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents)) | |
2214 | { | |
2215 | unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4); | |
2216 | unsigned int i; | |
2217 | ||
2218 | for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4) | |
2219 | { | |
2220 | unsigned int val = bfd_get_32 (abfd, contents + i); | |
2221 | switch (val >> 16) | |
2222 | { | |
2223 | case PPC_APUINFO_PMR: | |
2224 | case PPC_APUINFO_RFMCI: | |
2225 | if (mach == 0) | |
2226 | mach = bfd_mach_ppc_titan; | |
2227 | break; | |
2228 | ||
2229 | case PPC_APUINFO_ISEL: | |
2230 | case PPC_APUINFO_CACHELCK: | |
2231 | if (mach == bfd_mach_ppc_titan) | |
2232 | mach = bfd_mach_ppc_e500mc; | |
2233 | break; | |
2234 | ||
2235 | case PPC_APUINFO_SPE: | |
2236 | case PPC_APUINFO_EFS: | |
2237 | case PPC_APUINFO_BRLOCK: | |
2238 | if (mach != bfd_mach_ppc_vle) | |
2239 | mach = bfd_mach_ppc_e500; | |
8941017b | 2240 | break; |
14b57c7c AM |
2241 | |
2242 | case PPC_APUINFO_VLE: | |
2243 | mach = bfd_mach_ppc_vle; | |
2244 | break; | |
2245 | ||
2246 | default: | |
2247 | mach = -1ul; | |
2248 | } | |
2249 | } | |
2250 | free (contents); | |
2251 | } | |
2252 | } | |
2253 | ||
2254 | if (mach != 0 && mach != -1ul) | |
2255 | { | |
2256 | const bfd_arch_info_type *arch; | |
2257 | ||
2258 | for (arch = abfd->arch_info->next; arch; arch = arch->next) | |
2259 | if (arch->mach == mach) | |
2260 | { | |
2261 | abfd->arch_info = arch; | |
2262 | break; | |
2263 | } | |
2264 | } | |
2265 | return TRUE; | |
2266 | } | |
2267 | ||
25dbc73a | 2268 | /* Fix bad default arch selected for a 32 bit input bfd when the |
14b57c7c | 2269 | default is 64 bit. Also select arch based on apuinfo. */ |
7619e7c7 | 2270 | |
25dbc73a AM |
2271 | static bfd_boolean |
2272 | ppc_elf_object_p (bfd *abfd) | |
2273 | { | |
14b57c7c AM |
2274 | if (!abfd->arch_info->the_default) |
2275 | return TRUE; | |
2276 | ||
2277 | if (abfd->arch_info->bits_per_word == 64) | |
25dbc73a AM |
2278 | { |
2279 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 2280 | |
25dbc73a AM |
2281 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
2282 | { | |
2283 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2284 | abfd->arch_info = abfd->arch_info->next; | |
2285 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2286 | } | |
2287 | } | |
14b57c7c | 2288 | return _bfd_elf_ppc_set_arch (abfd); |
25dbc73a | 2289 | } |
7619e7c7 | 2290 | |
25dbc73a | 2291 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 2292 | |
25dbc73a AM |
2293 | static bfd_boolean |
2294 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
2295 | { | |
2296 | BFD_ASSERT (!elf_flags_init (abfd) | |
2297 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 2298 | |
25dbc73a AM |
2299 | elf_elfheader (abfd)->e_flags = flags; |
2300 | elf_flags_init (abfd) = TRUE; | |
2301 | return TRUE; | |
2302 | } | |
2303 | ||
25dbc73a | 2304 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 2305 | |
b34976b6 | 2306 | static bfd_boolean |
25dbc73a | 2307 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 2308 | { |
25dbc73a AM |
2309 | int offset; |
2310 | unsigned int size; | |
252b5132 | 2311 | |
25dbc73a AM |
2312 | switch (note->descsz) |
2313 | { | |
2314 | default: | |
2315 | return FALSE; | |
252b5132 | 2316 | |
25dbc73a AM |
2317 | case 268: /* Linux/PPC. */ |
2318 | /* pr_cursig */ | |
228e534f | 2319 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 2320 | |
25dbc73a | 2321 | /* pr_pid */ |
228e534f | 2322 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 2323 | |
25dbc73a AM |
2324 | /* pr_reg */ |
2325 | offset = 72; | |
2326 | size = 192; | |
deaaf2f3 | 2327 | |
25dbc73a AM |
2328 | break; |
2329 | } | |
deaaf2f3 | 2330 | |
25dbc73a AM |
2331 | /* Make a ".reg/999" section. */ |
2332 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2333 | size, note->descpos + offset); | |
2334 | } | |
252b5132 | 2335 | |
25dbc73a AM |
2336 | static bfd_boolean |
2337 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2338 | { | |
2339 | switch (note->descsz) | |
deaaf2f3 | 2340 | { |
25dbc73a AM |
2341 | default: |
2342 | return FALSE; | |
deaaf2f3 | 2343 | |
25dbc73a | 2344 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 2345 | elf_tdata (abfd)->core->pid |
bc989cdc | 2346 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 2347 | elf_tdata (abfd)->core->program |
25dbc73a | 2348 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 2349 | elf_tdata (abfd)->core->command |
25dbc73a AM |
2350 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
2351 | } | |
9abc968f | 2352 | |
25dbc73a AM |
2353 | /* Note that for some reason, a spurious space is tacked |
2354 | onto the end of the args in some (at least one anyway) | |
2355 | implementations, so strip it off if it exists. */ | |
70bccea4 | 2356 | |
25dbc73a | 2357 | { |
228e534f | 2358 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 2359 | int n = strlen (command); |
70bccea4 | 2360 | |
25dbc73a AM |
2361 | if (0 < n && command[n - 1] == ' ') |
2362 | command[n - 1] = '\0'; | |
2363 | } | |
deaaf2f3 | 2364 | |
25dbc73a AM |
2365 | return TRUE; |
2366 | } | |
deaaf2f3 | 2367 | |
183e98be AM |
2368 | static char * |
2369 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
2370 | { | |
2371 | switch (note_type) | |
2372 | { | |
2373 | default: | |
2374 | return NULL; | |
2375 | ||
2376 | case NT_PRPSINFO: | |
2377 | { | |
2378 | char data[128]; | |
2379 | va_list ap; | |
2380 | ||
2381 | va_start (ap, note_type); | |
75cd47ed | 2382 | memset (data, 0, sizeof (data)); |
183e98be AM |
2383 | strncpy (data + 32, va_arg (ap, const char *), 16); |
2384 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
2385 | va_end (ap); | |
2386 | return elfcore_write_note (abfd, buf, bufsiz, | |
2387 | "CORE", note_type, data, sizeof (data)); | |
2388 | } | |
2389 | ||
2390 | case NT_PRSTATUS: | |
2391 | { | |
2392 | char data[268]; | |
2393 | va_list ap; | |
2394 | long pid; | |
2395 | int cursig; | |
2396 | const void *greg; | |
2397 | ||
2398 | va_start (ap, note_type); | |
2399 | memset (data, 0, 72); | |
2400 | pid = va_arg (ap, long); | |
2401 | bfd_put_32 (abfd, pid, data + 24); | |
2402 | cursig = va_arg (ap, int); | |
2403 | bfd_put_16 (abfd, cursig, data + 12); | |
2404 | greg = va_arg (ap, const void *); | |
2405 | memcpy (data + 72, greg, 192); | |
2406 | memset (data + 264, 0, 4); | |
2407 | va_end (ap); | |
2408 | return elfcore_write_note (abfd, buf, bufsiz, | |
2409 | "CORE", note_type, data, sizeof (data)); | |
2410 | } | |
2411 | } | |
2412 | } | |
2413 | ||
b9c361e0 | 2414 | static flagword |
68ffbac6 | 2415 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
2416 | { |
2417 | ||
2418 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
2419 | return SHF_PPC_VLE; | |
2420 | ||
2421 | return 0; | |
2422 | } | |
2423 | ||
25dbc73a AM |
2424 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2425 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 2426 | |
25dbc73a AM |
2427 | static bfd_vma |
2428 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
2429 | const asection *plt ATTRIBUTE_UNUSED, | |
2430 | const arelent *rel) | |
2431 | { | |
2432 | return rel->address; | |
2433 | } | |
deaaf2f3 | 2434 | |
25dbc73a | 2435 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
2436 | is called when bfd_section_from_shdr finds a section with an unknown |
2437 | type. */ | |
deaaf2f3 | 2438 | |
25dbc73a | 2439 | static bfd_boolean |
6dc132d9 L |
2440 | ppc_elf_section_from_shdr (bfd *abfd, |
2441 | Elf_Internal_Shdr *hdr, | |
2442 | const char *name, | |
2443 | int shindex) | |
25dbc73a AM |
2444 | { |
2445 | asection *newsect; | |
2446 | flagword flags; | |
d1c6de6f | 2447 | |
6dc132d9 | 2448 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 2449 | return FALSE; |
deaaf2f3 | 2450 | |
25dbc73a AM |
2451 | newsect = hdr->bfd_section; |
2452 | flags = bfd_get_section_flags (abfd, newsect); | |
2453 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2454 | flags |= SEC_EXCLUDE; | |
9abc968f | 2455 | |
25dbc73a AM |
2456 | if (hdr->sh_type == SHT_ORDERED) |
2457 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 2458 | |
25dbc73a AM |
2459 | bfd_set_section_flags (abfd, newsect, flags); |
2460 | return TRUE; | |
2461 | } | |
2462 | ||
2463 | /* Set up any other section flags and such that may be necessary. */ | |
2464 | ||
2465 | static bfd_boolean | |
2466 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
2467 | Elf_Internal_Shdr *shdr, | |
2468 | asection *asect) | |
2469 | { | |
25dbc73a AM |
2470 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
2471 | shdr->sh_type = SHT_ORDERED; | |
2472 | ||
2473 | return TRUE; | |
2474 | } | |
2475 | ||
2476 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2477 | need to bump up the number of section headers. */ | |
2478 | ||
2479 | static int | |
a6b96beb AM |
2480 | ppc_elf_additional_program_headers (bfd *abfd, |
2481 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2482 | { |
2483 | asection *s; | |
2484 | int ret = 0; | |
d1c6de6f | 2485 | |
25dbc73a AM |
2486 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2487 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2488 | ++ret; | |
d1c6de6f | 2489 | |
25dbc73a AM |
2490 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2491 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2492 | ++ret; | |
deaaf2f3 | 2493 | |
25dbc73a AM |
2494 | return ret; |
2495 | } | |
deaaf2f3 | 2496 | |
68ffbac6 | 2497 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
2498 | |
2499 | bfd_boolean | |
2500 | ppc_elf_modify_segment_map (bfd *abfd, | |
2501 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2502 | { | |
f7d69005 | 2503 | struct elf_segment_map *m; |
b9c361e0 JL |
2504 | |
2505 | /* At this point in the link, output sections have already been sorted by | |
2506 | LMA and assigned to segments. All that is left to do is to ensure | |
2507 | there is no mixing of VLE & non-VLE sections in a text segment. | |
2508 | If we find that case, we split the segment. | |
2509 | We maintain the original output section order. */ | |
2510 | ||
12bd6957 | 2511 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 | 2512 | { |
f7d69005 AM |
2513 | struct elf_segment_map *n; |
2514 | bfd_size_type amt; | |
2515 | unsigned int j, k; | |
2516 | unsigned int p_flags; | |
2517 | ||
2518 | if (m->p_type != PT_LOAD || m->count == 0) | |
b9c361e0 JL |
2519 | continue; |
2520 | ||
f7d69005 | 2521 | for (p_flags = PF_R, j = 0; j != m->count; ++j) |
b9c361e0 | 2522 | { |
f7d69005 AM |
2523 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2524 | p_flags |= PF_W; | |
2525 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2526 | { | |
2527 | p_flags |= PF_X; | |
2528 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2529 | p_flags |= PF_PPC_VLE; | |
2530 | break; | |
2531 | } | |
2532 | } | |
2533 | if (j != m->count) | |
2534 | while (++j != m->count) | |
2535 | { | |
2536 | unsigned int p_flags1 = PF_R; | |
94caa966 | 2537 | |
f7d69005 AM |
2538 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2539 | p_flags1 |= PF_W; | |
2540 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2541 | { | |
2542 | p_flags1 |= PF_X; | |
2543 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2544 | p_flags1 |= PF_PPC_VLE; | |
2545 | if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0) | |
2546 | break; | |
2547 | } | |
2548 | p_flags |= p_flags1; | |
2549 | } | |
2550 | /* If we're splitting a segment which originally contained rw | |
2551 | sections then those sections might now only be in one of the | |
2552 | two parts. So always set p_flags if splitting, even if we | |
2553 | are being called for objcopy with p_flags_valid set. */ | |
2554 | if (j != m->count || !m->p_flags_valid) | |
2555 | { | |
2556 | m->p_flags_valid = 1; | |
2557 | m->p_flags = p_flags; | |
2558 | } | |
2559 | if (j == m->count) | |
b9c361e0 JL |
2560 | continue; |
2561 | ||
f7d69005 | 2562 | /* Sections 0..j-1 stay in this (current) segment, |
b9c361e0 JL |
2563 | the remainder are put in a new segment. |
2564 | The scan resumes with the new segment. */ | |
2565 | ||
b9c361e0 JL |
2566 | amt = sizeof (struct elf_segment_map); |
2567 | amt += (m->count - j - 1) * sizeof (asection *); | |
2568 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
2569 | if (n == NULL) | |
954b63d4 | 2570 | return FALSE; |
b9c361e0 JL |
2571 | |
2572 | n->p_type = PT_LOAD; | |
b9c361e0 JL |
2573 | n->count = m->count - j; |
2574 | for (k = 0; k < n->count; ++k) | |
f7d69005 AM |
2575 | n->sections[k] = m->sections[j + k]; |
2576 | m->count = j; | |
2577 | m->p_size_valid = 0; | |
b9c361e0 JL |
2578 | n->next = m->next; |
2579 | m->next = n; | |
b9c361e0 JL |
2580 | } |
2581 | ||
2582 | return TRUE; | |
2583 | } | |
2584 | ||
25dbc73a AM |
2585 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2586 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2587 | that the linker doesn't crater when trying to make more than | |
2588 | 2 sections. */ | |
e656e369 | 2589 | |
b35d266b | 2590 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2591 | { |
14b57c7c AM |
2592 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2593 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2594 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2595 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2596 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2597 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2598 | { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 }, | |
2599 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2600 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2601 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2602 | }; |
2603 | ||
551b43fd AM |
2604 | /* This is what we want for new plt/got. */ |
2605 | static struct bfd_elf_special_section ppc_alt_plt = | |
07d6d2b8 | 2606 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2607 | |
2608 | static const struct bfd_elf_special_section * | |
4aef7643 | 2609 | ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
7f4d3958 | 2610 | { |
b35d266b | 2611 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2612 | |
2613 | /* See if this is one of the special sections. */ | |
2614 | if (sec->name == NULL) | |
2615 | return NULL; | |
2616 | ||
2617 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2618 | sec->use_rela_p); | |
2619 | if (ssect != NULL) | |
2620 | { | |
2621 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2622 | ssect = &ppc_alt_plt; | |
2623 | return ssect; | |
2624 | } | |
2625 | ||
2626 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2627 | } | |
25dbc73a AM |
2628 | \f |
2629 | /* Very simple linked list structure for recording apuinfo values. */ | |
2630 | typedef struct apuinfo_list | |
2631 | { | |
2632 | struct apuinfo_list *next; | |
2633 | unsigned long value; | |
2634 | } | |
2635 | apuinfo_list; | |
e656e369 | 2636 | |
25dbc73a | 2637 | static apuinfo_list *head; |
f2faa800 | 2638 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 2639 | |
25dbc73a AM |
2640 | static void |
2641 | apuinfo_list_init (void) | |
2642 | { | |
2643 | head = NULL; | |
f2faa800 | 2644 | apuinfo_set = FALSE; |
25dbc73a | 2645 | } |
9abc968f | 2646 | |
25dbc73a AM |
2647 | static void |
2648 | apuinfo_list_add (unsigned long value) | |
2649 | { | |
2650 | apuinfo_list *entry = head; | |
deaaf2f3 | 2651 | |
25dbc73a AM |
2652 | while (entry != NULL) |
2653 | { | |
2654 | if (entry->value == value) | |
2655 | return; | |
2656 | entry = entry->next; | |
2657 | } | |
b4a38de6 | 2658 | |
25dbc73a AM |
2659 | entry = bfd_malloc (sizeof (* entry)); |
2660 | if (entry == NULL) | |
2661 | return; | |
e656e369 | 2662 | |
25dbc73a AM |
2663 | entry->value = value; |
2664 | entry->next = head; | |
2665 | head = entry; | |
2666 | } | |
9abc968f | 2667 | |
25dbc73a AM |
2668 | static unsigned |
2669 | apuinfo_list_length (void) | |
2670 | { | |
2671 | apuinfo_list *entry; | |
2672 | unsigned long count; | |
9abc968f | 2673 | |
25dbc73a AM |
2674 | for (entry = head, count = 0; |
2675 | entry; | |
2676 | entry = entry->next) | |
2677 | ++ count; | |
e656e369 | 2678 | |
25dbc73a AM |
2679 | return count; |
2680 | } | |
eea6121a | 2681 | |
25dbc73a AM |
2682 | static inline unsigned long |
2683 | apuinfo_list_element (unsigned long number) | |
2684 | { | |
2685 | apuinfo_list * entry; | |
e656e369 | 2686 | |
25dbc73a AM |
2687 | for (entry = head; |
2688 | entry && number --; | |
2689 | entry = entry->next) | |
2690 | ; | |
252b5132 | 2691 | |
25dbc73a AM |
2692 | return entry ? entry->value : 0; |
2693 | } | |
2694 | ||
2695 | static void | |
2696 | apuinfo_list_finish (void) | |
2697 | { | |
2698 | apuinfo_list *entry; | |
2699 | ||
2700 | for (entry = head; entry;) | |
252b5132 | 2701 | { |
25dbc73a AM |
2702 | apuinfo_list *next = entry->next; |
2703 | free (entry); | |
2704 | entry = next; | |
2705 | } | |
9abc968f | 2706 | |
25dbc73a AM |
2707 | head = NULL; |
2708 | } | |
9abc968f | 2709 | |
25dbc73a AM |
2710 | /* Scan the input BFDs and create a linked list of |
2711 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2712 | |
25dbc73a AM |
2713 | static void |
2714 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2715 | { | |
2716 | bfd *ibfd; | |
2717 | asection *asec; | |
deddc40b NS |
2718 | char *buffer = NULL; |
2719 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 2720 | unsigned i; |
25dbc73a AM |
2721 | unsigned long length; |
2722 | const char *error_message = NULL; | |
9abc968f | 2723 | |
25dbc73a AM |
2724 | if (link_info == NULL) |
2725 | return; | |
9abc968f | 2726 | |
25dbc73a | 2727 | apuinfo_list_init (); |
252b5132 | 2728 | |
25dbc73a | 2729 | /* Read in the input sections contents. */ |
c72f2fb2 | 2730 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 2731 | { |
25dbc73a | 2732 | unsigned long datum; |
252b5132 | 2733 | |
25dbc73a AM |
2734 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2735 | if (asec == NULL) | |
2736 | continue; | |
252b5132 | 2737 | |
695344c0 | 2738 | /* xgettext:c-format */ |
deddc40b | 2739 | error_message = _("corrupt %s section in %B"); |
25dbc73a | 2740 | length = asec->size; |
deddc40b NS |
2741 | if (length < 20) |
2742 | goto fail; | |
2743 | ||
f2faa800 | 2744 | apuinfo_set = TRUE; |
deddc40b | 2745 | if (largest_input_size < asec->size) |
25dbc73a | 2746 | { |
deddc40b NS |
2747 | if (buffer) |
2748 | free (buffer); | |
2749 | largest_input_size = asec->size; | |
2750 | buffer = bfd_malloc (largest_input_size); | |
2751 | if (!buffer) | |
2752 | return; | |
25dbc73a | 2753 | } |
5b914448 | 2754 | |
25dbc73a | 2755 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 2756 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a | 2757 | { |
695344c0 | 2758 | /* xgettext:c-format */ |
25dbc73a AM |
2759 | error_message = _("unable to read in %s section from %B"); |
2760 | goto fail; | |
2761 | } | |
252b5132 | 2762 | |
25dbc73a AM |
2763 | /* Verify the contents of the header. Note - we have to |
2764 | extract the values this way in order to allow for a | |
2765 | host whose endian-ness is different from the target. */ | |
deddc40b | 2766 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
2767 | if (datum != sizeof APUINFO_LABEL) |
2768 | goto fail; | |
252b5132 | 2769 | |
deddc40b | 2770 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
2771 | if (datum != 0x2) |
2772 | goto fail; | |
252b5132 | 2773 | |
deddc40b | 2774 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 2775 | goto fail; |
252b5132 | 2776 | |
25dbc73a | 2777 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 2778 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
2779 | if (datum + 20 != length) |
2780 | goto fail; | |
2781 | ||
25dbc73a AM |
2782 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
2783 | for (i = 0; i < datum; i += 4) | |
deddc40b | 2784 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
2785 | } |
2786 | ||
25dbc73a | 2787 | error_message = NULL; |
252b5132 | 2788 | |
f2faa800 | 2789 | if (apuinfo_set) |
deddc40b | 2790 | { |
f2faa800 NS |
2791 | /* Compute the size of the output section. */ |
2792 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 2793 | |
deddc40b NS |
2794 | /* Set the output section size, if it exists. */ |
2795 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 2796 | |
deddc40b NS |
2797 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
2798 | { | |
2799 | ibfd = abfd; | |
695344c0 | 2800 | /* xgettext:c-format */ |
deddc40b NS |
2801 | error_message = _("warning: unable to set size of %s section in %B"); |
2802 | } | |
2803 | } | |
25dbc73a AM |
2804 | |
2805 | fail: | |
deddc40b NS |
2806 | if (buffer) |
2807 | free (buffer); | |
25dbc73a AM |
2808 | |
2809 | if (error_message) | |
cd9af601 | 2810 | _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd); |
25dbc73a | 2811 | } |
252b5132 | 2812 | |
25dbc73a AM |
2813 | /* Prevent the output section from accumulating the input sections' |
2814 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2815 | |
25dbc73a AM |
2816 | static bfd_boolean |
2817 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2818 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2819 | asection *asec, |
2820 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2821 | { | |
f2faa800 | 2822 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
2823 | } |
2824 | ||
25dbc73a AM |
2825 | /* Finally we can generate the output section. */ |
2826 | ||
2827 | static void | |
2828 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2829 | { |
25dbc73a AM |
2830 | bfd_byte *buffer; |
2831 | asection *asec; | |
2832 | unsigned i; | |
2833 | unsigned num_entries; | |
2834 | bfd_size_type length; | |
7619e7c7 | 2835 | |
25dbc73a AM |
2836 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2837 | if (asec == NULL) | |
2838 | return; | |
2839 | ||
f2faa800 | 2840 | if (!apuinfo_set) |
25dbc73a AM |
2841 | return; |
2842 | ||
2843 | length = asec->size; | |
2844 | if (length < 20) | |
2845 | return; | |
2846 | ||
2847 | buffer = bfd_malloc (length); | |
2848 | if (buffer == NULL) | |
7619e7c7 | 2849 | { |
4eca0228 | 2850 | _bfd_error_handler |
25dbc73a AM |
2851 | (_("failed to allocate space for new APUinfo section.")); |
2852 | return; | |
7619e7c7 | 2853 | } |
7619e7c7 | 2854 | |
25dbc73a AM |
2855 | /* Create the apuinfo header. */ |
2856 | num_entries = apuinfo_list_length (); | |
2857 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2858 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2859 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2860 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2861 | |
25dbc73a AM |
2862 | length = 20; |
2863 | for (i = 0; i < num_entries; i++) | |
feee612b | 2864 | { |
25dbc73a AM |
2865 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2866 | length += 4; | |
feee612b | 2867 | } |
feee612b | 2868 | |
25dbc73a | 2869 | if (length != asec->size) |
4eca0228 | 2870 | _bfd_error_handler (_("failed to compute new APUinfo section.")); |
252b5132 | 2871 | |
25dbc73a | 2872 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
4eca0228 | 2873 | _bfd_error_handler (_("failed to install new APUinfo section.")); |
252b5132 | 2874 | |
25dbc73a AM |
2875 | free (buffer); |
2876 | ||
2877 | apuinfo_list_finish (); | |
252b5132 | 2878 | } |
25dbc73a | 2879 | \f |
7382d32a | 2880 | static bfd_boolean |
c6dd29ce | 2881 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2882 | { |
1be5d8d3 | 2883 | bfd_byte buf[3 * 4]; |
7382d32a | 2884 | |
9e390558 | 2885 | if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf)) |
7382d32a AM |
2886 | return FALSE; |
2887 | ||
c6dd29ce AM |
2888 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2889 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
1be5d8d3 | 2890 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11); |
7382d32a AM |
2891 | } |
2892 | ||
468392fb AM |
2893 | static bfd_boolean |
2894 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2895 | { | |
2896 | bfd_vma vma = *(bfd_vma *) ptr; | |
2897 | return ((section->flags & SEC_ALLOC) != 0 | |
2898 | && section->vma <= vma | |
2899 | && vma < section->vma + section->size); | |
2900 | } | |
2901 | ||
2902 | static long | |
2903 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2904 | long dynsymcount, asymbol **dynsyms, | |
2905 | asymbol **ret) | |
2906 | { | |
2907 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2908 | asection *plt, *relplt, *dynamic, *glink; | |
2909 | bfd_vma glink_vma = 0; | |
2910 | bfd_vma resolv_vma = 0; | |
9e390558 | 2911 | bfd_vma stub_off; |
468392fb AM |
2912 | asymbol *s; |
2913 | arelent *p; | |
9e390558 | 2914 | long count, i, stub_delta; |
468392fb AM |
2915 | size_t size; |
2916 | char *names; | |
2917 | bfd_byte buf[4]; | |
2918 | ||
2919 | *ret = NULL; | |
2920 | ||
2921 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2922 | return 0; | |
2923 | ||
2924 | if (dynsymcount <= 0) | |
2925 | return 0; | |
2926 | ||
2927 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2928 | if (relplt == NULL) | |
2929 | return 0; | |
2930 | ||
2931 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2932 | if (plt == NULL) | |
2933 | return 0; | |
2934 | ||
2935 | /* Call common code to handle old-style executable PLTs. */ | |
2936 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2937 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2938 | dynsymcount, dynsyms, ret); | |
2939 | ||
2940 | /* If this object was prelinked, the prelinker stored the address | |
2941 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2942 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2943 | if (dynamic != NULL) | |
2944 | { | |
2945 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2946 | size_t extdynsize; | |
2947 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2948 | ||
2949 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2950 | return -1; | |
2951 | ||
2952 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2953 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2954 | ||
2955 | extdyn = dynbuf; | |
2956 | extdynend = extdyn + dynamic->size; | |
2957 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2958 | { | |
2959 | Elf_Internal_Dyn dyn; | |
2960 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2961 | ||
2962 | if (dyn.d_tag == DT_NULL) | |
2963 | break; | |
2964 | ||
2965 | if (dyn.d_tag == DT_PPC_GOT) | |
2966 | { | |
2967 | unsigned int g_o_t = dyn.d_un.d_val; | |
2968 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
2969 | if (got != NULL | |
2970 | && bfd_get_section_contents (abfd, got, buf, | |
2971 | g_o_t - got->vma + 4, 4)) | |
2972 | glink_vma = bfd_get_32 (abfd, buf); | |
2973 | break; | |
2974 | } | |
2975 | } | |
2976 | free (dynbuf); | |
2977 | } | |
2978 | ||
2979 | /* Otherwise we read the first plt entry. */ | |
2980 | if (glink_vma == 0) | |
2981 | { | |
2982 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
2983 | glink_vma = bfd_get_32 (abfd, buf); | |
2984 | } | |
2985 | ||
2986 | if (glink_vma == 0) | |
2987 | return 0; | |
2988 | ||
2989 | /* The .glink section usually does not survive the final | |
2990 | link; search for the section (usually .text) where the | |
2991 | glink stubs now reside. */ | |
2992 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
2993 | if (glink == NULL) | |
2994 | return 0; | |
2995 | ||
2996 | /* Determine glink PLT resolver by reading the relative branch | |
2997 | from the first glink stub. */ | |
2998 | if (bfd_get_section_contents (abfd, glink, buf, | |
2999 | glink_vma - glink->vma, 4)) | |
3000 | { | |
3001 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3002 | ||
3003 | /* The first glink stub may either branch to the resolver ... */ | |
3004 | insn ^= B; | |
3005 | if ((insn & ~0x3fffffc) == 0) | |
3006 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
3007 | ||
3008 | /* ... or fall through a bunch of NOPs. */ | |
3009 | else if ((insn ^ B ^ NOP) == 0) | |
3010 | for (i = 4; | |
3011 | bfd_get_section_contents (abfd, glink, buf, | |
3012 | glink_vma - glink->vma + i, 4); | |
3013 | i += 4) | |
3014 | if (bfd_get_32 (abfd, buf) != NOP) | |
3015 | { | |
3016 | resolv_vma = glink_vma + i; | |
3017 | break; | |
3018 | } | |
3019 | } | |
3020 | ||
7382d32a | 3021 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
3022 | /* If the stubs are those for -shared/-pie then we might have |
3023 | multiple stubs for each plt entry. If that is the case then | |
3024 | there is no way to associate stubs with their plt entries short | |
9e390558 AM |
3025 | of figuring out the GOT pointer value used in the stub. |
3026 | The offsets tested here need to cover all possible values of | |
3027 | GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */ | |
3028 | stub_off = glink_vma - glink->vma; | |
3029 | for (stub_delta = 16; stub_delta <= 32; stub_delta += 8) | |
3030 | if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta)) | |
3031 | break; | |
3032 | if (stub_delta > 32) | |
7382d32a AM |
3033 | return 0; |
3034 | ||
468392fb AM |
3035 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
3036 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
3037 | return -1; | |
3038 | ||
468392fb AM |
3039 | size = count * sizeof (asymbol); |
3040 | p = relplt->relocation; | |
3041 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
3042 | { |
3043 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3044 | if (p->addend != 0) | |
3045 | size += sizeof ("+0x") - 1 + 8; | |
3046 | } | |
468392fb AM |
3047 | |
3048 | size += sizeof (asymbol) + sizeof ("__glink"); | |
3049 | ||
3050 | if (resolv_vma) | |
3051 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
3052 | ||
3053 | s = *ret = bfd_malloc (size); | |
3054 | if (s == NULL) | |
3055 | return -1; | |
3056 | ||
9e390558 | 3057 | stub_off = glink_vma - glink->vma; |
468392fb | 3058 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
3059 | p = relplt->relocation + count - 1; |
3060 | for (i = 0; i < count; i++) | |
468392fb AM |
3061 | { |
3062 | size_t len; | |
3063 | ||
9e390558 AM |
3064 | stub_off -= stub_delta; |
3065 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
3066 | stub_off -= 32; | |
468392fb AM |
3067 | *s = **p->sym_ptr_ptr; |
3068 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3069 | we are defining a symbol, ensure one of them is set. */ | |
3070 | if ((s->flags & BSF_LOCAL) == 0) | |
3071 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3072 | s->flags |= BSF_SYNTHETIC; |
468392fb | 3073 | s->section = glink; |
9e390558 | 3074 | s->value = stub_off; |
468392fb AM |
3075 | s->name = names; |
3076 | s->udata.p = NULL; | |
3077 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3078 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3079 | names += len; | |
e054468f AM |
3080 | if (p->addend != 0) |
3081 | { | |
3082 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3083 | names += sizeof ("+0x") - 1; | |
3084 | bfd_sprintf_vma (abfd, names, p->addend); | |
3085 | names += strlen (names); | |
3086 | } | |
468392fb AM |
3087 | memcpy (names, "@plt", sizeof ("@plt")); |
3088 | names += sizeof ("@plt"); | |
3089 | ++s; | |
1079403c | 3090 | --p; |
468392fb AM |
3091 | } |
3092 | ||
3093 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 3094 | memset (s, 0, sizeof *s); |
468392fb | 3095 | s->the_bfd = abfd; |
6ba2a415 | 3096 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3097 | s->section = glink; |
3098 | s->value = glink_vma - glink->vma; | |
3099 | s->name = names; | |
3100 | memcpy (names, "__glink", sizeof ("__glink")); | |
3101 | names += sizeof ("__glink"); | |
3102 | s++; | |
3103 | count++; | |
3104 | ||
3105 | if (resolv_vma) | |
3106 | { | |
3107 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 3108 | memset (s, 0, sizeof *s); |
468392fb | 3109 | s->the_bfd = abfd; |
6ba2a415 | 3110 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3111 | s->section = glink; |
3112 | s->value = resolv_vma - glink->vma; | |
3113 | s->name = names; | |
3114 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3115 | names += sizeof ("__glink_PLTresolve"); | |
3116 | s++; | |
3117 | count++; | |
3118 | } | |
3119 | ||
3120 | return count; | |
3121 | } | |
3122 | \f | |
25dbc73a AM |
3123 | /* The following functions are specific to the ELF linker, while |
3124 | functions above are used generally. They appear in this file more | |
3125 | or less in the order in which they are called. eg. | |
3126 | ppc_elf_check_relocs is called early in the link process, | |
3127 | ppc_elf_finish_dynamic_sections is one of the last functions | |
3128 | called. */ | |
252b5132 | 3129 | |
a6aa5195 | 3130 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 3131 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
3132 | struct plt_entry |
3133 | { | |
3134 | struct plt_entry *next; | |
3135 | ||
3136 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
3137 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
3138 | GOT pointer reg. It will always be at least 32768. (Current |
3139 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
3140 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
3141 | bfd_vma addend; |
3142 | ||
3143 | /* The .got2 section. */ | |
3144 | asection *sec; | |
3145 | ||
3146 | /* PLT refcount or offset. */ | |
3147 | union | |
3148 | { | |
3149 | bfd_signed_vma refcount; | |
3150 | bfd_vma offset; | |
3151 | } plt; | |
3152 | ||
3153 | /* .glink stub offset. */ | |
3154 | bfd_vma glink_offset; | |
3155 | }; | |
3156 | ||
7c8bbca5 AM |
3157 | /* Of those relocs that might be copied as dynamic relocs, this |
3158 | function selects those that must be copied when linking a shared | |
3159 | library or PIE, even when the symbol is local. */ | |
252b5132 | 3160 | |
1d483afe AM |
3161 | static int |
3162 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3163 | enum elf_ppc_reloc_type r_type) | |
3164 | { | |
3165 | switch (r_type) | |
3166 | { | |
3167 | default: | |
7c8bbca5 AM |
3168 | /* Only relative relocs can be resolved when the object load |
3169 | address isn't fixed. DTPREL32 is excluded because the | |
3170 | dynamic linker needs to differentiate global dynamic from | |
3171 | local dynamic __tls_index pairs when PPC_OPT_TLS is set. */ | |
1d483afe AM |
3172 | return 1; |
3173 | ||
3174 | case R_PPC_REL24: | |
3175 | case R_PPC_REL14: | |
3176 | case R_PPC_REL14_BRTAKEN: | |
3177 | case R_PPC_REL14_BRNTAKEN: | |
3178 | case R_PPC_REL32: | |
3179 | return 0; | |
3180 | ||
3181 | case R_PPC_TPREL32: | |
3182 | case R_PPC_TPREL16: | |
3183 | case R_PPC_TPREL16_LO: | |
3184 | case R_PPC_TPREL16_HI: | |
3185 | case R_PPC_TPREL16_HA: | |
7c8bbca5 AM |
3186 | /* These relocations are relative but in a shared library the |
3187 | linker doesn't know the thread pointer base. */ | |
3188 | return bfd_link_dll (info); | |
1d483afe AM |
3189 | } |
3190 | } | |
252b5132 | 3191 | |
25dbc73a AM |
3192 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3193 | copying dynamic variables from a shared lib into an app's dynbss | |
3194 | section, and instead use a dynamic relocation to point into the | |
3195 | shared lib. */ | |
3196 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 3197 | |
f95f8542 AM |
3198 | /* Used to track dynamic relocations for local symbols. */ |
3199 | struct ppc_dyn_relocs | |
3200 | { | |
3201 | struct ppc_dyn_relocs *next; | |
3202 | ||
3203 | /* The input section of the reloc. */ | |
3204 | asection *sec; | |
3205 | ||
3206 | /* Total number of relocs copied for the input section. */ | |
3207 | unsigned int count : 31; | |
3208 | ||
3209 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3210 | unsigned int ifunc : 1; | |
3211 | }; | |
3212 | ||
25dbc73a | 3213 | /* PPC ELF linker hash entry. */ |
252b5132 | 3214 | |
25dbc73a AM |
3215 | struct ppc_elf_link_hash_entry |
3216 | { | |
3217 | struct elf_link_hash_entry elf; | |
252b5132 | 3218 | |
25dbc73a AM |
3219 | /* If this symbol is used in the linker created sections, the processor |
3220 | specific backend uses this field to map the field into the offset | |
3221 | from the beginning of the section. */ | |
3222 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 3223 | |
25dbc73a | 3224 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3225 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 3226 | |
25dbc73a AM |
3227 | /* Contexts in which symbol is used in the GOT (or TOC). |
3228 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
3229 | corresponding relocs are encountered during check_relocs. | |
3230 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3231 | indicate the corresponding GOT entry type is not needed. */ | |
3232 | #define TLS_GD 1 /* GD reloc. */ | |
3233 | #define TLS_LD 2 /* LD reloc. */ | |
3234 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3235 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3236 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3237 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3238 | #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */ |
25dbc73a | 3239 | char tls_mask; |
4dc4a9a5 DJ |
3240 | |
3241 | /* Nonzero if we have seen a small data relocation referring to this | |
3242 | symbol. */ | |
d3e454b9 AM |
3243 | unsigned char has_sda_refs : 1; |
3244 | ||
3245 | /* Flag use of given relocations. */ | |
3246 | unsigned char has_addr16_ha : 1; | |
3247 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 3248 | }; |
252b5132 | 3249 | |
25dbc73a AM |
3250 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
3251 | ||
3252 | /* PPC ELF linker hash table. */ | |
3253 | ||
3254 | struct ppc_elf_link_hash_table | |
3255 | { | |
3256 | struct elf_link_hash_table elf; | |
3257 | ||
5446cbdf AM |
3258 | /* Various options passed from the linker. */ |
3259 | struct ppc_elf_params *params; | |
3260 | ||
25dbc73a | 3261 | /* Short-cuts to get to dynamic linker sections. */ |
d7128ce4 | 3262 | asection *glink; |
25dbc73a AM |
3263 | asection *dynsbss; |
3264 | asection *relsbss; | |
c9a2f333 | 3265 | elf_linker_section_t sdata[2]; |
25dbc73a | 3266 | asection *sbss; |
6177242a | 3267 | asection *glink_eh_frame; |
25dbc73a | 3268 | |
016687f8 AM |
3269 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
3270 | asection *srelplt2; | |
3271 | ||
1d483afe | 3272 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 3273 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 3274 | |
016687f8 AM |
3275 | /* The bfd that forced an old-style PLT. */ |
3276 | bfd *old_bfd; | |
5b914448 | 3277 | |
25dbc73a AM |
3278 | /* TLS local dynamic got entry handling. */ |
3279 | union { | |
3280 | bfd_signed_vma refcount; | |
3281 | bfd_vma offset; | |
3282 | } tlsld_got; | |
252b5132 | 3283 | |
c6dd29ce | 3284 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
3285 | bfd_vma glink_pltresolve; |
3286 | ||
3b36f7e6 AM |
3287 | /* Size of reserved GOT entries. */ |
3288 | unsigned int got_header_size; | |
3289 | /* Non-zero if allocating the header left a gap. */ | |
3290 | unsigned int got_gap; | |
3291 | ||
4a3dc543 RS |
3292 | /* The type of PLT we have chosen to use. */ |
3293 | enum ppc_elf_plt_type plt_type; | |
3294 | ||
9d8504b1 | 3295 | /* True if the target system is VxWorks. */ |
016687f8 | 3296 | unsigned int is_vxworks:1; |
9d8504b1 | 3297 | |
82e66161 AM |
3298 | /* Whether there exist local gnu indirect function resolvers, |
3299 | referenced by dynamic relocations. */ | |
3300 | unsigned int local_ifunc_resolver:1; | |
3301 | unsigned int maybe_local_ifunc_resolver:1; | |
3302 | ||
9a23f96e AM |
3303 | /* Set if tls optimization is enabled. */ |
3304 | unsigned int do_tls_opt:1; | |
3305 | ||
9d8504b1 PB |
3306 | /* The size of PLT entries. */ |
3307 | int plt_entry_size; | |
3308 | /* The distance between adjacent PLT slots. */ | |
3309 | int plt_slot_size; | |
3310 | /* The size of the first PLT entry. */ | |
3311 | int plt_initial_entry_size; | |
016687f8 | 3312 | |
87d72d41 AM |
3313 | /* Small local sym cache. */ |
3314 | struct sym_cache sym_cache; | |
25dbc73a | 3315 | }; |
252b5132 | 3316 | |
94caa966 AM |
3317 | /* Rename some of the generic section flags to better document how they |
3318 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
3319 | ||
3320 | /* Nonzero if this section has TLS related relocations. */ | |
3321 | #define has_tls_reloc sec_flg0 | |
3322 | ||
3323 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3324 | #define has_tls_get_addr_call sec_flg1 | |
3325 | ||
25dbc73a | 3326 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 3327 | |
25dbc73a | 3328 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
3329 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3330 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 3331 | |
25dbc73a | 3332 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 3333 | |
25dbc73a AM |
3334 | static struct bfd_hash_entry * |
3335 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3336 | struct bfd_hash_table *table, | |
3337 | const char *string) | |
252b5132 | 3338 | { |
25dbc73a AM |
3339 | /* Allocate the structure if it has not already been allocated by a |
3340 | subclass. */ | |
3341 | if (entry == NULL) | |
3342 | { | |
3343 | entry = bfd_hash_allocate (table, | |
3344 | sizeof (struct ppc_elf_link_hash_entry)); | |
3345 | if (entry == NULL) | |
3346 | return entry; | |
3347 | } | |
252b5132 | 3348 | |
25dbc73a AM |
3349 | /* Call the allocation method of the superclass. */ |
3350 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3351 | if (entry != NULL) | |
3352 | { | |
3353 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
3354 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
3355 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 3356 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 3357 | } |
252b5132 | 3358 | |
25dbc73a | 3359 | return entry; |
252b5132 | 3360 | } |
3dab13f6 | 3361 | |
25dbc73a | 3362 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 3363 | |
25dbc73a AM |
3364 | static struct bfd_link_hash_table * |
3365 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 3366 | { |
25dbc73a | 3367 | struct ppc_elf_link_hash_table *ret; |
76e7a751 | 3368 | static struct ppc_elf_params default_params |
1be5d8d3 | 3369 | = { PLT_OLD, 0, 1, 0, 1, 0, 0, 12, 0, 0, 0 }; |
3dab13f6 | 3370 | |
25dbc73a AM |
3371 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
3372 | if (ret == NULL) | |
3373 | return NULL; | |
3dab13f6 | 3374 | |
66eb6687 AM |
3375 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
3376 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
3377 | sizeof (struct ppc_elf_link_hash_entry), |
3378 | PPC32_ELF_DATA)) | |
3dab13f6 | 3379 | { |
25dbc73a AM |
3380 | free (ret); |
3381 | return NULL; | |
3382 | } | |
58111eb7 | 3383 | |
a6aa5195 AM |
3384 | ret->elf.init_plt_refcount.refcount = 0; |
3385 | ret->elf.init_plt_refcount.glist = NULL; | |
3386 | ret->elf.init_plt_offset.offset = 0; | |
3387 | ret->elf.init_plt_offset.glist = NULL; | |
3388 | ||
db434ba0 AM |
3389 | ret->params = &default_params; |
3390 | ||
c9a2f333 AM |
3391 | ret->sdata[0].name = ".sdata"; |
3392 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
3393 | ret->sdata[0].bss_name = ".sbss"; | |
3394 | ||
3395 | ret->sdata[1].name = ".sdata2"; | |
3396 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
3397 | ret->sdata[1].bss_name = ".sbss2"; | |
3398 | ||
9d8504b1 PB |
3399 | ret->plt_entry_size = 12; |
3400 | ret->plt_slot_size = 8; | |
3401 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 3402 | |
25dbc73a AM |
3403 | return &ret->elf.root; |
3404 | } | |
3dab13f6 | 3405 | |
5446cbdf AM |
3406 | /* Hook linker params into hash table. */ |
3407 | ||
3408 | void | |
3409 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
3410 | { | |
3411 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3412 | ||
3413 | if (htab) | |
3414 | htab->params = params; | |
76e7a751 | 3415 | params->pagesize_p2 = bfd_log2 (params->pagesize); |
5446cbdf AM |
3416 | } |
3417 | ||
9d8504b1 | 3418 | /* Create .got and the related sections. */ |
3dab13f6 | 3419 | |
25dbc73a AM |
3420 | static bfd_boolean |
3421 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
3422 | { | |
3423 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3424 | |
25dbc73a AM |
3425 | if (!_bfd_elf_create_got_section (abfd, info)) |
3426 | return FALSE; | |
3dab13f6 | 3427 | |
25dbc73a | 3428 | htab = ppc_elf_hash_table (info); |
ce558b89 | 3429 | if (!htab->is_vxworks) |
9d8504b1 PB |
3430 | { |
3431 | /* The powerpc .got has a blrl instruction in it. Mark it | |
3432 | executable. */ | |
ce558b89 AM |
3433 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS |
3434 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3435 | if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags)) | |
9d8504b1 PB |
3436 | return FALSE; |
3437 | } | |
3dab13f6 | 3438 | |
25dbc73a AM |
3439 | return TRUE; |
3440 | } | |
3dab13f6 | 3441 | |
93d1b056 AM |
3442 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
3443 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
3444 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
3445 | ||
3446 | static bfd_boolean | |
3447 | ppc_elf_create_linker_section (bfd *abfd, | |
3448 | struct bfd_link_info *info, | |
3449 | flagword flags, | |
3450 | elf_linker_section_t *lsect) | |
3451 | { | |
3452 | asection *s; | |
3453 | ||
3454 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3455 | | SEC_LINKER_CREATED); | |
3456 | ||
3457 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
3458 | if (s == NULL) | |
3459 | return FALSE; | |
3460 | lsect->section = s; | |
3461 | ||
3462 | /* Define the sym on the first section of this name. */ | |
3463 | s = bfd_get_section_by_name (abfd, lsect->name); | |
3464 | ||
3465 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
3466 | if (lsect->sym == NULL) | |
3467 | return FALSE; | |
3468 | lsect->sym->root.u.def.value = 0x8000; | |
3469 | return TRUE; | |
3470 | } | |
3471 | ||
e054468f AM |
3472 | static bfd_boolean |
3473 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
3474 | { | |
3475 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3476 | asection *s; | |
3477 | flagword flags; | |
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; | |
3483 | if (s == NULL | |
5446cbdf AM |
3484 | || !bfd_set_section_alignment (abfd, s, |
3485 | htab->params->ppc476_workaround ? 6 : 4)) | |
e054468f AM |
3486 | return FALSE; |
3487 | ||
6177242a AM |
3488 | if (!info->no_ld_generated_unwind_info) |
3489 | { | |
3490 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3491 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3492 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
3493 | htab->glink_eh_frame = s; | |
3494 | if (s == NULL | |
3495 | || !bfd_set_section_alignment (abfd, s, 2)) | |
3496 | return FALSE; | |
3497 | } | |
3498 | ||
e054468f AM |
3499 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
3500 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
ce558b89 | 3501 | htab->elf.iplt = s; |
e054468f AM |
3502 | if (s == NULL |
3503 | || !bfd_set_section_alignment (abfd, s, 4)) | |
3504 | return FALSE; | |
3505 | ||
3506 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3507 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3508 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
ce558b89 | 3509 | htab->elf.irelplt = s; |
e054468f AM |
3510 | if (s == NULL |
3511 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3512 | return FALSE; | |
93d1b056 AM |
3513 | |
3514 | if (!ppc_elf_create_linker_section (abfd, info, 0, | |
3515 | &htab->sdata[0])) | |
3516 | return FALSE; | |
3517 | ||
3518 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3519 | &htab->sdata[1])) | |
3520 | return FALSE; | |
3521 | ||
e054468f AM |
3522 | return TRUE; |
3523 | } | |
3524 | ||
25dbc73a AM |
3525 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
3526 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
3527 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 3528 | |
25dbc73a AM |
3529 | static bfd_boolean |
3530 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3531 | { | |
3532 | struct ppc_elf_link_hash_table *htab; | |
3533 | asection *s; | |
3534 | flagword flags; | |
3dab13f6 | 3535 | |
25dbc73a | 3536 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 3537 | |
ce558b89 | 3538 | if (htab->elf.sgot == NULL |
25dbc73a | 3539 | && !ppc_elf_create_got (abfd, info)) |
3dab13f6 AM |
3540 | return FALSE; |
3541 | ||
25dbc73a AM |
3542 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
3543 | return FALSE; | |
3dab13f6 | 3544 | |
e054468f AM |
3545 | if (htab->glink == NULL |
3546 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 3547 | return FALSE; |
3dab13f6 | 3548 | |
14b2f831 AM |
3549 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
3550 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 3551 | htab->dynsbss = s; |
3496cb2a | 3552 | if (s == NULL) |
25dbc73a | 3553 | return FALSE; |
3dab13f6 | 3554 | |
0e1862bb | 3555 | if (! bfd_link_pic (info)) |
25dbc73a | 3556 | { |
e054468f AM |
3557 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
3558 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3559 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 3560 | htab->relsbss = s; |
25dbc73a | 3561 | if (s == NULL |
25dbc73a AM |
3562 | || ! bfd_set_section_alignment (abfd, s, 2)) |
3563 | return FALSE; | |
3564 | } | |
3dab13f6 | 3565 | |
711de32c RS |
3566 | if (htab->is_vxworks |
3567 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
3568 | return FALSE; | |
9d8504b1 | 3569 | |
ce558b89 | 3570 | s = htab->elf.splt; |
3b36f7e6 | 3571 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
3572 | if (htab->plt_type == PLT_VXWORKS) |
3573 | /* The VxWorks PLT is a loaded section with contents. */ | |
3574 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
3575 | return bfd_set_section_flags (abfd, s, flags); |
3576 | } | |
3dab13f6 | 3577 | |
25dbc73a | 3578 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 3579 | |
25dbc73a | 3580 | static void |
fcfa13d2 | 3581 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
3582 | struct elf_link_hash_entry *dir, |
3583 | struct elf_link_hash_entry *ind) | |
3584 | { | |
3585 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 3586 | |
25dbc73a AM |
3587 | edir = (struct ppc_elf_link_hash_entry *) dir; |
3588 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 3589 | |
c79d6685 AM |
3590 | edir->tls_mask |= eind->tls_mask; |
3591 | edir->has_sda_refs |= eind->has_sda_refs; | |
3592 | ||
e81830c5 AM |
3593 | if (edir->elf.versioned != versioned_hidden) |
3594 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
c79d6685 AM |
3595 | edir->elf.ref_regular |= eind->elf.ref_regular; |
3596 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3597 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
c79d6685 AM |
3598 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3599 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
3600 | ||
287c7eaf AM |
3601 | /* If we were called to copy over info for a weak sym, that's all. */ |
3602 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3603 | return; | |
3604 | ||
25dbc73a AM |
3605 | if (eind->dyn_relocs != NULL) |
3606 | { | |
3607 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3608 | { |
6061a67d AM |
3609 | struct elf_dyn_relocs **pp; |
3610 | struct elf_dyn_relocs *p; | |
3dab13f6 | 3611 | |
fcfa13d2 | 3612 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3613 | list. Merge any entries against the same section. */ |
3614 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3615 | { |
6061a67d | 3616 | struct elf_dyn_relocs *q; |
25dbc73a AM |
3617 | |
3618 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3619 | if (q->sec == p->sec) | |
3620 | { | |
3621 | q->pc_count += p->pc_count; | |
3622 | q->count += p->count; | |
3623 | *pp = p->next; | |
3624 | break; | |
3625 | } | |
3626 | if (q == NULL) | |
3627 | pp = &p->next; | |
3dab13f6 | 3628 | } |
25dbc73a | 3629 | *pp = edir->dyn_relocs; |
3dab13f6 | 3630 | } |
25dbc73a AM |
3631 | |
3632 | edir->dyn_relocs = eind->dyn_relocs; | |
3633 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3634 | } |
3dab13f6 | 3635 | |
a6aa5195 AM |
3636 | /* Copy over the GOT refcount entries that we may have already seen to |
3637 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3638 | edir->elf.got.refcount += eind->elf.got.refcount; |
3639 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3640 | |
3641 | /* And plt entries. */ | |
3642 | if (eind->elf.plt.plist != NULL) | |
3643 | { | |
3644 | if (edir->elf.plt.plist != NULL) | |
3645 | { | |
3646 | struct plt_entry **entp; | |
3647 | struct plt_entry *ent; | |
3648 | ||
3649 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3650 | { | |
3651 | struct plt_entry *dent; | |
3652 | ||
3653 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3654 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3655 | { | |
3656 | dent->plt.refcount += ent->plt.refcount; | |
3657 | *entp = ent->next; | |
3658 | break; | |
3659 | } | |
3660 | if (dent == NULL) | |
3661 | entp = &ent->next; | |
3662 | } | |
3663 | *entp = edir->elf.plt.plist; | |
3664 | } | |
3665 | ||
3666 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3667 | eind->elf.plt.plist = NULL; | |
3668 | } | |
3669 | ||
fcfa13d2 | 3670 | if (eind->elf.dynindx != -1) |
25dbc73a | 3671 | { |
fcfa13d2 AM |
3672 | if (edir->elf.dynindx != -1) |
3673 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3674 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3675 | edir->elf.dynindx = eind->elf.dynindx; |
3676 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3677 | eind->elf.dynindx = -1; | |
3678 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3679 | } |
25dbc73a | 3680 | } |
3dab13f6 | 3681 | |
25dbc73a AM |
3682 | /* Hook called by the linker routine which adds symbols from an object |
3683 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3684 | |
25dbc73a AM |
3685 | static bfd_boolean |
3686 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3687 | struct bfd_link_info *info, | |
3688 | Elf_Internal_Sym *sym, | |
3689 | const char **namep ATTRIBUTE_UNUSED, | |
3690 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3691 | asection **secp, | |
3692 | bfd_vma *valp) | |
3693 | { | |
3694 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 3695 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
3696 | && is_ppc_elf (info->output_bfd) |
3697 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3698 | { |
3699 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3700 | put into .sbss. */ | |
3701 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3702 | |
25dbc73a AM |
3703 | htab = ppc_elf_hash_table (info); |
3704 | if (htab->sbss == NULL) | |
3705 | { | |
644285ef | 3706 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3707 | |
644285ef AM |
3708 | if (!htab->elf.dynobj) |
3709 | htab->elf.dynobj = abfd; | |
3710 | ||
3496cb2a L |
3711 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3712 | ".sbss", | |
3713 | flags); | |
3714 | if (htab->sbss == NULL) | |
25dbc73a | 3715 | return FALSE; |
3dab13f6 | 3716 | } |
3dab13f6 | 3717 | |
25dbc73a AM |
3718 | *secp = htab->sbss; |
3719 | *valp = sym->st_size; | |
3720 | } | |
3dab13f6 | 3721 | |
a43942db | 3722 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
3723 | && (abfd->flags & DYNAMIC) == 0 |
3724 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 3725 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
e054468f | 3726 | |
25dbc73a | 3727 | return TRUE; |
3dab13f6 AM |
3728 | } |
3729 | \f | |
25dbc73a AM |
3730 | /* Find a linker generated pointer with a given addend and type. */ |
3731 | ||
3732 | static elf_linker_section_pointers_t * | |
3733 | elf_find_pointer_linker_section | |
3734 | (elf_linker_section_pointers_t *linker_pointers, | |
3735 | bfd_vma addend, | |
3736 | elf_linker_section_t *lsect) | |
252b5132 | 3737 | { |
25dbc73a AM |
3738 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3739 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3740 | return linker_pointers; | |
252b5132 | 3741 | |
25dbc73a AM |
3742 | return NULL; |
3743 | } | |
3744 | ||
3745 | /* Allocate a pointer to live in a linker created section. */ | |
3746 | ||
3747 | static bfd_boolean | |
93d1b056 AM |
3748 | elf_allocate_pointer_linker_section (bfd *abfd, |
3749 | elf_linker_section_t *lsect, | |
3750 | struct elf_link_hash_entry *h, | |
3751 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
3752 | { |
3753 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3754 | elf_linker_section_pointers_t *linker_section_ptr; | |
3755 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3756 | bfd_size_type amt; | |
3757 | ||
3758 | BFD_ASSERT (lsect != NULL); | |
3759 | ||
3760 | /* Is this a global symbol? */ | |
3761 | if (h != NULL) | |
3762 | { | |
3763 | struct ppc_elf_link_hash_entry *eh; | |
3764 | ||
3765 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3766 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3767 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3768 | rel->r_addend, | |
3769 | lsect)) | |
3770 | return TRUE; | |
3771 | ||
3772 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3773 | } |
3774 | else | |
3775 | { | |
0c8d6e5c | 3776 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3777 | |
25dbc73a AM |
3778 | /* Allocation of a pointer to a local symbol. */ |
3779 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3780 | ||
3781 | /* Allocate a table to hold the local symbols if first time. */ | |
3782 | if (!ptr) | |
3783 | { | |
0ffa91dd | 3784 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3785 | |
3786 | amt = num_symbols; | |
3787 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3788 | ptr = bfd_zalloc (abfd, amt); | |
3789 | ||
3790 | if (!ptr) | |
3791 | return FALSE; | |
3792 | ||
3793 | elf_local_ptr_offsets (abfd) = ptr; | |
3794 | } | |
3795 | ||
3796 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3797 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3798 | rel->r_addend, | |
3799 | lsect)) | |
3800 | return TRUE; | |
252b5132 | 3801 | |
25dbc73a | 3802 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3803 | } |
41fcb14e | 3804 | |
25dbc73a AM |
3805 | /* Allocate space for a pointer in the linker section, and allocate |
3806 | a new pointer record from internal memory. */ | |
3807 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3808 | amt = sizeof (elf_linker_section_pointers_t); | |
3809 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3810 | |
25dbc73a | 3811 | if (!linker_section_ptr) |
7619e7c7 | 3812 | return FALSE; |
41fcb14e | 3813 | |
25dbc73a AM |
3814 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3815 | linker_section_ptr->addend = rel->r_addend; | |
3816 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3817 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3818 | |
93d1b056 AM |
3819 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
3820 | return FALSE; | |
25dbc73a AM |
3821 | linker_section_ptr->offset = lsect->section->size; |
3822 | lsect->section->size += 4; | |
7619e7c7 | 3823 | |
25dbc73a AM |
3824 | #ifdef DEBUG |
3825 | fprintf (stderr, | |
3826 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3827 | lsect->name, (long) linker_section_ptr->offset, | |
3828 | (long) lsect->section->size); | |
3829 | #endif | |
7619e7c7 AM |
3830 | |
3831 | return TRUE; | |
41fcb14e AM |
3832 | } |
3833 | ||
e054468f | 3834 | static struct plt_entry ** |
25dbc73a AM |
3835 | update_local_sym_info (bfd *abfd, |
3836 | Elf_Internal_Shdr *symtab_hdr, | |
3837 | unsigned long r_symndx, | |
3838 | int tls_type) | |
252b5132 | 3839 | { |
25dbc73a | 3840 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3841 | struct plt_entry **local_plt; |
25dbc73a | 3842 | char *local_got_tls_masks; |
252b5132 | 3843 | |
25dbc73a | 3844 | if (local_got_refcounts == NULL) |
252b5132 | 3845 | { |
25dbc73a AM |
3846 | bfd_size_type size = symtab_hdr->sh_info; |
3847 | ||
e054468f AM |
3848 | size *= (sizeof (*local_got_refcounts) |
3849 | + sizeof (*local_plt) | |
3850 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3851 | local_got_refcounts = bfd_zalloc (abfd, size); |
3852 | if (local_got_refcounts == NULL) | |
e054468f | 3853 | return NULL; |
25dbc73a | 3854 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3855 | } |
41fcb14e | 3856 | |
e054468f AM |
3857 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
3858 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
25dbc73a | 3859 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
3860 | if (tls_type != PLT_IFUNC) |
3861 | local_got_refcounts[r_symndx] += 1; | |
3862 | return local_plt + r_symndx; | |
25dbc73a | 3863 | } |
41fcb14e | 3864 | |
a6aa5195 | 3865 | static bfd_boolean |
3ec01793 | 3866 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3867 | asection *sec, bfd_vma addend) |
3868 | { | |
3869 | struct plt_entry *ent; | |
3870 | ||
32af9f6e AM |
3871 | if (addend < 32768) |
3872 | sec = NULL; | |
3ec01793 | 3873 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3874 | if (ent->sec == sec && ent->addend == addend) |
3875 | break; | |
3876 | if (ent == NULL) | |
3877 | { | |
3878 | bfd_size_type amt = sizeof (*ent); | |
3879 | ent = bfd_alloc (abfd, amt); | |
3880 | if (ent == NULL) | |
3881 | return FALSE; | |
3ec01793 | 3882 | ent->next = *plist; |
a6aa5195 AM |
3883 | ent->sec = sec; |
3884 | ent->addend = addend; | |
3885 | ent->plt.refcount = 0; | |
3ec01793 | 3886 | *plist = ent; |
a6aa5195 AM |
3887 | } |
3888 | ent->plt.refcount += 1; | |
3889 | return TRUE; | |
3890 | } | |
3891 | ||
3892 | static struct plt_entry * | |
3ec01793 | 3893 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3894 | { |
3895 | struct plt_entry *ent; | |
3896 | ||
3897 | if (addend < 32768) | |
3898 | sec = NULL; | |
3ec01793 | 3899 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3900 | if (ent->sec == sec && ent->addend == addend) |
3901 | break; | |
3902 | return ent; | |
3903 | } | |
3904 | ||
e054468f AM |
3905 | static bfd_boolean |
3906 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3907 | { | |
3908 | return (r_type == R_PPC_PLTREL24 | |
3909 | || r_type == R_PPC_LOCAL24PC | |
3910 | || r_type == R_PPC_REL24 | |
3911 | || r_type == R_PPC_REL14 | |
3912 | || r_type == R_PPC_REL14_BRTAKEN | |
3913 | || r_type == R_PPC_REL14_BRNTAKEN | |
3914 | || r_type == R_PPC_ADDR24 | |
3915 | || r_type == R_PPC_ADDR14 | |
3916 | || r_type == R_PPC_ADDR14_BRTAKEN | |
dfdaec14 AJ |
3917 | || r_type == R_PPC_ADDR14_BRNTAKEN |
3918 | || r_type == R_PPC_VLE_REL24); | |
e054468f AM |
3919 | } |
3920 | ||
25dbc73a AM |
3921 | static void |
3922 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3923 | { | |
4eca0228 | 3924 | _bfd_error_handler |
695344c0 | 3925 | /* xgettext:c-format */ |
25dbc73a AM |
3926 | (_("%B: relocation %s cannot be used when making a shared object"), |
3927 | abfd, | |
3928 | ppc_elf_howto_table[r_type]->name); | |
3929 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3930 | } |
3931 | ||
25dbc73a AM |
3932 | /* Look through the relocs for a section during the first phase, and |
3933 | allocate space in the global offset table or procedure linkage | |
3934 | table. */ | |
252b5132 | 3935 | |
b34976b6 | 3936 | static bfd_boolean |
25dbc73a AM |
3937 | ppc_elf_check_relocs (bfd *abfd, |
3938 | struct bfd_link_info *info, | |
3939 | asection *sec, | |
3940 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3941 | { |
7619e7c7 | 3942 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3943 | Elf_Internal_Shdr *symtab_hdr; |
3944 | struct elf_link_hash_entry **sym_hashes; | |
3945 | const Elf_Internal_Rela *rel; | |
3946 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3947 | asection *got2, *sreloc; |
727fc41e | 3948 | struct elf_link_hash_entry *tga; |
25dbc73a | 3949 | |
0e1862bb | 3950 | if (bfd_link_relocatable (info)) |
25dbc73a | 3951 | return TRUE; |
252b5132 | 3952 | |
c87b5a93 AM |
3953 | /* Don't do anything special with non-loaded, non-alloced sections. |
3954 | In particular, any relocs in such sections should not affect GOT | |
3955 | and PLT reference counting (ie. we don't allow them to create GOT | |
3956 | or PLT entries), there's no possibility or desire to optimize TLS | |
3957 | relocs, and there's not much point in propagating relocs to shared | |
3958 | libs that the dynamic linker won't relocate. */ | |
3959 | if ((sec->flags & SEC_ALLOC) == 0) | |
3960 | return TRUE; | |
3961 | ||
252b5132 | 3962 | #ifdef DEBUG |
25dbc73a AM |
3963 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3964 | sec, abfd); | |
252b5132 RH |
3965 | #endif |
3966 | ||
0c8d6e5c | 3967 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3968 | |
25dbc73a AM |
3969 | /* Initialize howto table if not already done. */ |
3970 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3971 | ppc_elf_howto_init (); | |
3972 | ||
7619e7c7 | 3973 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
3974 | if (htab->glink == NULL) |
3975 | { | |
3976 | if (htab->elf.dynobj == NULL) | |
3977 | htab->elf.dynobj = abfd; | |
3978 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
3979 | return FALSE; | |
3980 | } | |
727fc41e AM |
3981 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3982 | FALSE, FALSE, TRUE); | |
0ffa91dd | 3983 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 3984 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 3985 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3986 | sreloc = NULL; |
3987 | ||
3988 | rel_end = relocs + sec->reloc_count; | |
3989 | for (rel = relocs; rel < rel_end; rel++) | |
3990 | { | |
3991 | unsigned long r_symndx; | |
3992 | enum elf_ppc_reloc_type r_type; | |
3993 | struct elf_link_hash_entry *h; | |
727fc41e | 3994 | int tls_type; |
cbf95972 | 3995 | struct plt_entry **ifunc; |
25dbc73a AM |
3996 | |
3997 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3998 | if (r_symndx < symtab_hdr->sh_info) | |
3999 | h = NULL; | |
4000 | else | |
973a3492 L |
4001 | { |
4002 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4003 | while (h->root.type == bfd_link_hash_indirect | |
4004 | || h->root.type == bfd_link_hash_warning) | |
4005 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4006 | } | |
25dbc73a AM |
4007 | |
4008 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
4009 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
4010 | startup code. */ | |
3b36f7e6 | 4011 | if (h != NULL |
ce558b89 | 4012 | && htab->elf.sgot == NULL |
3b36f7e6 | 4013 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 | 4014 | { |
3b36f7e6 AM |
4015 | if (htab->elf.dynobj == NULL) |
4016 | htab->elf.dynobj = abfd; | |
4017 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4018 | return FALSE; | |
4019 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 4020 | } |
252b5132 | 4021 | |
727fc41e | 4022 | tls_type = 0; |
de972ffa | 4023 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 4024 | ifunc = NULL; |
06a162cf | 4025 | if (h == NULL && !htab->is_vxworks) |
e054468f | 4026 | { |
06a162cf AM |
4027 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4028 | abfd, r_symndx); | |
4029 | if (isym == NULL) | |
4030 | return FALSE; | |
4031 | ||
0bed072f | 4032 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 4033 | { |
0bed072f | 4034 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf AM |
4035 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
4036 | PLT_IFUNC); | |
4037 | if (ifunc == NULL) | |
e054468f AM |
4038 | return FALSE; |
4039 | ||
06a162cf AM |
4040 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
4041 | In a non-pie executable even when there are | |
4042 | no plt calls. */ | |
0e1862bb | 4043 | if (!bfd_link_pic (info) |
0bed072f | 4044 | || is_branch_reloc (r_type)) |
e054468f | 4045 | { |
0bed072f AM |
4046 | bfd_vma addend = 0; |
4047 | if (r_type == R_PPC_PLTREL24) | |
4048 | { | |
4049 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4050 | if (bfd_link_pic (info)) |
0bed072f AM |
4051 | addend = rel->r_addend; |
4052 | } | |
4053 | if (!update_plt_info (abfd, ifunc, got2, addend)) | |
4054 | return FALSE; | |
e054468f AM |
4055 | } |
4056 | } | |
25f23106 AM |
4057 | } |
4058 | ||
de972ffa AM |
4059 | if (!htab->is_vxworks |
4060 | && is_branch_reloc (r_type) | |
4061 | && h != NULL | |
4062 | && h == tga) | |
25f23106 | 4063 | { |
de972ffa AM |
4064 | if (rel != relocs |
4065 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
4066 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
4067 | /* We have a new-style __tls_get_addr call with a marker | |
4068 | reloc. */ | |
4069 | ; | |
4070 | else | |
4071 | /* Mark this section as having an old-style call. */ | |
4072 | sec->has_tls_get_addr_call = 1; | |
e054468f | 4073 | } |
727fc41e | 4074 | |
25dbc73a AM |
4075 | switch (r_type) |
4076 | { | |
727fc41e AM |
4077 | case R_PPC_TLSGD: |
4078 | case R_PPC_TLSLD: | |
4079 | /* These special tls relocs tie a call to __tls_get_addr with | |
4080 | its parameter symbol. */ | |
4081 | break; | |
4082 | ||
25dbc73a AM |
4083 | case R_PPC_GOT_TLSLD16: |
4084 | case R_PPC_GOT_TLSLD16_LO: | |
4085 | case R_PPC_GOT_TLSLD16_HI: | |
4086 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4087 | tls_type = TLS_TLS | TLS_LD; |
4088 | goto dogottls; | |
252b5132 | 4089 | |
25dbc73a AM |
4090 | case R_PPC_GOT_TLSGD16: |
4091 | case R_PPC_GOT_TLSGD16_LO: | |
4092 | case R_PPC_GOT_TLSGD16_HI: | |
4093 | case R_PPC_GOT_TLSGD16_HA: | |
4094 | tls_type = TLS_TLS | TLS_GD; | |
4095 | goto dogottls; | |
4096 | ||
4097 | case R_PPC_GOT_TPREL16: | |
4098 | case R_PPC_GOT_TPREL16_LO: | |
4099 | case R_PPC_GOT_TPREL16_HI: | |
4100 | case R_PPC_GOT_TPREL16_HA: | |
7c8bbca5 | 4101 | if (bfd_link_dll (info)) |
25dbc73a AM |
4102 | info->flags |= DF_STATIC_TLS; |
4103 | tls_type = TLS_TLS | TLS_TPREL; | |
4104 | goto dogottls; | |
4105 | ||
4106 | case R_PPC_GOT_DTPREL16: | |
4107 | case R_PPC_GOT_DTPREL16_LO: | |
4108 | case R_PPC_GOT_DTPREL16_HI: | |
4109 | case R_PPC_GOT_DTPREL16_HA: | |
4110 | tls_type = TLS_TLS | TLS_DTPREL; | |
4111 | dogottls: | |
4112 | sec->has_tls_reloc = 1; | |
1a0670f3 | 4113 | /* Fall through. */ |
252b5132 | 4114 | |
25dbc73a AM |
4115 | /* GOT16 relocations */ |
4116 | case R_PPC_GOT16: | |
4117 | case R_PPC_GOT16_LO: | |
4118 | case R_PPC_GOT16_HI: | |
4119 | case R_PPC_GOT16_HA: | |
4120 | /* This symbol requires a global offset table entry. */ | |
ce558b89 | 4121 | if (htab->elf.sgot == NULL) |
25dbc73a AM |
4122 | { |
4123 | if (htab->elf.dynobj == NULL) | |
4124 | htab->elf.dynobj = abfd; | |
4125 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4126 | return FALSE; | |
4127 | } | |
4128 | if (h != NULL) | |
4129 | { | |
4130 | h->got.refcount += 1; | |
4131 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
4132 | } | |
4133 | else | |
4134 | /* This is a global offset table entry for a local symbol. */ | |
4135 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
4136 | return FALSE; | |
91e21fb7 AM |
4137 | |
4138 | /* We may also need a plt entry if the symbol turns out to be | |
4139 | an ifunc. */ | |
0e1862bb | 4140 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
4141 | { |
4142 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4143 | return FALSE; | |
4144 | } | |
25dbc73a | 4145 | break; |
252b5132 | 4146 | |
25dbc73a AM |
4147 | /* Indirect .sdata relocation. */ |
4148 | case R_PPC_EMB_SDAI16: | |
0e1862bb | 4149 | if (bfd_link_pic (info)) |
25dbc73a AM |
4150 | { |
4151 | bad_shared_reloc (abfd, r_type); | |
4152 | return FALSE; | |
4153 | } | |
93d1b056 AM |
4154 | htab->sdata[0].sym->ref_regular = 1; |
4155 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
4156 | h, rel)) | |
25dbc73a | 4157 | return FALSE; |
046183de AM |
4158 | if (h != NULL) |
4159 | { | |
4160 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4161 | h->non_got_ref = TRUE; | |
4162 | } | |
25dbc73a | 4163 | break; |
252b5132 | 4164 | |
25dbc73a AM |
4165 | /* Indirect .sdata2 relocation. */ |
4166 | case R_PPC_EMB_SDA2I16: | |
0e1862bb | 4167 | if (bfd_link_pic (info)) |
25dbc73a AM |
4168 | { |
4169 | bad_shared_reloc (abfd, r_type); | |
4170 | return FALSE; | |
4171 | } | |
93d1b056 AM |
4172 | htab->sdata[1].sym->ref_regular = 1; |
4173 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
4174 | h, rel)) | |
25dbc73a | 4175 | return FALSE; |
046183de AM |
4176 | if (h != NULL) |
4177 | { | |
4178 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4179 | h->non_got_ref = TRUE; | |
4180 | } | |
25dbc73a | 4181 | break; |
252b5132 | 4182 | |
93d1b056 AM |
4183 | case R_PPC_SDAREL16: |
4184 | htab->sdata[0].sym->ref_regular = 1; | |
1a0670f3 | 4185 | /* Fall through. */ |
93d1b056 | 4186 | |
b9c361e0 JL |
4187 | case R_PPC_VLE_SDAREL_LO16A: |
4188 | case R_PPC_VLE_SDAREL_LO16D: | |
4189 | case R_PPC_VLE_SDAREL_HI16A: | |
4190 | case R_PPC_VLE_SDAREL_HI16D: | |
4191 | case R_PPC_VLE_SDAREL_HA16A: | |
4192 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
4193 | if (h != NULL) |
4194 | { | |
4195 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4196 | h->non_got_ref = TRUE; | |
4197 | } | |
4198 | break; | |
4199 | ||
b9c361e0 JL |
4200 | case R_PPC_VLE_REL8: |
4201 | case R_PPC_VLE_REL15: | |
4202 | case R_PPC_VLE_REL24: | |
4203 | case R_PPC_VLE_LO16A: | |
4204 | case R_PPC_VLE_LO16D: | |
4205 | case R_PPC_VLE_HI16A: | |
4206 | case R_PPC_VLE_HI16D: | |
4207 | case R_PPC_VLE_HA16A: | |
4208 | case R_PPC_VLE_HA16D: | |
83eef883 | 4209 | case R_PPC_VLE_ADDR20: |
b9c361e0 JL |
4210 | break; |
4211 | ||
25dbc73a | 4212 | case R_PPC_EMB_SDA2REL: |
0e1862bb | 4213 | if (bfd_link_pic (info)) |
046183de AM |
4214 | { |
4215 | bad_shared_reloc (abfd, r_type); | |
4216 | return FALSE; | |
4217 | } | |
93d1b056 | 4218 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
4219 | if (h != NULL) |
4220 | { | |
4221 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4222 | h->non_got_ref = TRUE; | |
4223 | } | |
4224 | break; | |
4225 | ||
b9c361e0 JL |
4226 | case R_PPC_VLE_SDA21_LO: |
4227 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
4228 | case R_PPC_EMB_SDA21: |
4229 | case R_PPC_EMB_RELSDA: | |
0e1862bb | 4230 | if (bfd_link_pic (info)) |
046183de AM |
4231 | { |
4232 | bad_shared_reloc (abfd, r_type); | |
4233 | return FALSE; | |
4234 | } | |
046183de AM |
4235 | if (h != NULL) |
4236 | { | |
4237 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4238 | h->non_got_ref = TRUE; | |
4239 | } | |
4240 | break; | |
4241 | ||
25dbc73a AM |
4242 | case R_PPC_EMB_NADDR32: |
4243 | case R_PPC_EMB_NADDR16: | |
4244 | case R_PPC_EMB_NADDR16_LO: | |
4245 | case R_PPC_EMB_NADDR16_HI: | |
4246 | case R_PPC_EMB_NADDR16_HA: | |
0e1862bb | 4247 | if (bfd_link_pic (info)) |
25dbc73a AM |
4248 | { |
4249 | bad_shared_reloc (abfd, r_type); | |
4250 | return FALSE; | |
4251 | } | |
4dc4a9a5 | 4252 | if (h != NULL) |
046183de | 4253 | h->non_got_ref = TRUE; |
25dbc73a | 4254 | break; |
252b5132 | 4255 | |
25dbc73a | 4256 | case R_PPC_PLTREL24: |
de972ffa | 4257 | if (h == NULL) |
6d78d0b9 AM |
4258 | break; |
4259 | /* Fall through */ | |
4260 | case R_PPC_PLT32: | |
25dbc73a AM |
4261 | case R_PPC_PLTREL32: |
4262 | case R_PPC_PLT16_LO: | |
4263 | case R_PPC_PLT16_HI: | |
4264 | case R_PPC_PLT16_HA: | |
4265 | #ifdef DEBUG | |
4266 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
4267 | #endif | |
cbf95972 | 4268 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
4269 | if (h == NULL) |
4270 | { | |
cbf95972 AM |
4271 | if (ifunc == NULL) |
4272 | { | |
4273 | /* It does not make sense to have a procedure linkage | |
4274 | table entry for a non-ifunc local symbol. */ | |
4275 | info->callbacks->einfo | |
695344c0 | 4276 | /* xgettext:c-format */ |
174d0a74 | 4277 | (_("%H: %s reloc against local symbol\n"), |
cbf95972 AM |
4278 | abfd, sec, rel->r_offset, |
4279 | ppc_elf_howto_table[r_type]->name); | |
4280 | bfd_set_error (bfd_error_bad_value); | |
4281 | return FALSE; | |
4282 | } | |
25dbc73a | 4283 | } |
a6aa5195 AM |
4284 | else |
4285 | { | |
016687f8 | 4286 | bfd_vma addend = 0; |
ee05f2fe | 4287 | |
016687f8 AM |
4288 | if (r_type == R_PPC_PLTREL24) |
4289 | { | |
4290 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4291 | if (bfd_link_pic (info)) |
a877a2b6 | 4292 | addend = rel->r_addend; |
016687f8 | 4293 | } |
a6aa5195 | 4294 | h->needs_plt = 1; |
32af9f6e | 4295 | if (!update_plt_info (abfd, &h->plt.plist, got2, addend)) |
a6aa5195 AM |
4296 | return FALSE; |
4297 | } | |
25dbc73a | 4298 | break; |
ee05f2fe | 4299 | |
25dbc73a AM |
4300 | /* The following relocations don't need to propagate the |
4301 | relocation if linking a shared object since they are | |
4302 | section relative. */ | |
4303 | case R_PPC_SECTOFF: | |
4304 | case R_PPC_SECTOFF_LO: | |
4305 | case R_PPC_SECTOFF_HI: | |
4306 | case R_PPC_SECTOFF_HA: | |
4307 | case R_PPC_DTPREL16: | |
4308 | case R_PPC_DTPREL16_LO: | |
4309 | case R_PPC_DTPREL16_HI: | |
4310 | case R_PPC_DTPREL16_HA: | |
4311 | case R_PPC_TOC16: | |
4312 | break; | |
252b5132 | 4313 | |
d7128ce4 AM |
4314 | case R_PPC_REL16: |
4315 | case R_PPC_REL16_LO: | |
4316 | case R_PPC_REL16_HI: | |
4317 | case R_PPC_REL16_HA: | |
a680de9a | 4318 | case R_PPC_REL16DX_HA: |
016687f8 | 4319 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
4320 | break; |
4321 | ||
a6aa5195 | 4322 | /* These are just markers. */ |
25dbc73a AM |
4323 | case R_PPC_TLS: |
4324 | case R_PPC_EMB_MRKREF: | |
4325 | case R_PPC_NONE: | |
4326 | case R_PPC_max: | |
32af9f6e AM |
4327 | case R_PPC_RELAX: |
4328 | case R_PPC_RELAX_PLT: | |
4329 | case R_PPC_RELAX_PLTREL24: | |
7ba71655 | 4330 | case R_PPC_16DX_HA: |
25dbc73a | 4331 | break; |
252b5132 | 4332 | |
25dbc73a AM |
4333 | /* These should only appear in dynamic objects. */ |
4334 | case R_PPC_COPY: | |
4335 | case R_PPC_GLOB_DAT: | |
4336 | case R_PPC_JMP_SLOT: | |
4337 | case R_PPC_RELATIVE: | |
e054468f | 4338 | case R_PPC_IRELATIVE: |
25dbc73a | 4339 | break; |
252b5132 | 4340 | |
25dbc73a AM |
4341 | /* These aren't handled yet. We'll report an error later. */ |
4342 | case R_PPC_ADDR30: | |
4343 | case R_PPC_EMB_RELSEC16: | |
4344 | case R_PPC_EMB_RELST_LO: | |
4345 | case R_PPC_EMB_RELST_HI: | |
4346 | case R_PPC_EMB_RELST_HA: | |
4347 | case R_PPC_EMB_BIT_FLD: | |
4348 | break; | |
252b5132 | 4349 | |
25dbc73a AM |
4350 | /* This refers only to functions defined in the shared library. */ |
4351 | case R_PPC_LOCAL24PC: | |
727fc41e | 4352 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
4353 | { |
4354 | htab->plt_type = PLT_OLD; | |
4355 | htab->old_bfd = abfd; | |
4356 | } | |
c7e17e05 AM |
4357 | if (h != NULL && h->type == STT_GNU_IFUNC) |
4358 | { | |
c7e17e05 AM |
4359 | h->needs_plt = 1; |
4360 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4361 | return FALSE; | |
4362 | } | |
25dbc73a | 4363 | break; |
252b5132 | 4364 | |
25dbc73a AM |
4365 | /* This relocation describes the C++ object vtable hierarchy. |
4366 | Reconstruct it for later use during GC. */ | |
4367 | case R_PPC_GNU_VTINHERIT: | |
4368 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4369 | return FALSE; | |
4370 | break; | |
252b5132 | 4371 | |
25dbc73a AM |
4372 | /* This relocation describes which C++ vtable entries are actually |
4373 | used. Record for later use during GC. */ | |
4374 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
4375 | BFD_ASSERT (h != NULL); |
4376 | if (h != NULL | |
4377 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
4378 | return FALSE; |
4379 | break; | |
252b5132 | 4380 | |
7c8bbca5 | 4381 | /* We shouldn't really be seeing TPREL32. */ |
25dbc73a | 4382 | case R_PPC_TPREL32: |
1d483afe AM |
4383 | case R_PPC_TPREL16: |
4384 | case R_PPC_TPREL16_LO: | |
4385 | case R_PPC_TPREL16_HI: | |
4386 | case R_PPC_TPREL16_HA: | |
7c8bbca5 | 4387 | if (bfd_link_dll (info)) |
25dbc73a AM |
4388 | info->flags |= DF_STATIC_TLS; |
4389 | goto dodyn; | |
252b5132 | 4390 | |
25dbc73a AM |
4391 | /* Nor these. */ |
4392 | case R_PPC_DTPMOD32: | |
4393 | case R_PPC_DTPREL32: | |
4394 | goto dodyn; | |
252b5132 | 4395 | |
9edfd1af AM |
4396 | case R_PPC_REL32: |
4397 | if (h == NULL | |
4398 | && got2 != NULL | |
4399 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 4400 | && bfd_link_pic (info) |
4a3dc543 | 4401 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
4402 | { |
4403 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
4404 | the start of a function, which assembles to a REL32 | |
4405 | reference to .got2. If we detect one of these, then | |
4406 | force the old PLT layout because the linker cannot | |
4407 | reliably deduce the GOT pointer value needed for | |
4408 | PLT call stubs. */ | |
4409 | asection *s; | |
87d72d41 | 4410 | Elf_Internal_Sym *isym; |
9edfd1af | 4411 | |
87d72d41 AM |
4412 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4413 | abfd, r_symndx); | |
4414 | if (isym == NULL) | |
4415 | return FALSE; | |
4416 | ||
4417 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 4418 | if (s == got2) |
016687f8 AM |
4419 | { |
4420 | htab->plt_type = PLT_OLD; | |
4421 | htab->old_bfd = abfd; | |
4422 | } | |
9edfd1af | 4423 | } |
7123df0e | 4424 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 4425 | break; |
625af618 AM |
4426 | /* fall through */ |
4427 | ||
4428 | case R_PPC_ADDR32: | |
4429 | case R_PPC_ADDR16: | |
4430 | case R_PPC_ADDR16_LO: | |
4431 | case R_PPC_ADDR16_HI: | |
4432 | case R_PPC_ADDR16_HA: | |
4433 | case R_PPC_UADDR32: | |
4434 | case R_PPC_UADDR16: | |
0e1862bb | 4435 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
4436 | { |
4437 | /* We may need a plt entry if the symbol turns out to be | |
4438 | a function defined in a dynamic object. */ | |
3ec01793 | 4439 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
4440 | return FALSE; |
4441 | ||
4442 | /* We may need a copy reloc too. */ | |
4443 | h->non_got_ref = 1; | |
4444 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
4445 | if (r_type == R_PPC_ADDR16_HA) |
4446 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
4447 | if (r_type == R_PPC_ADDR16_LO) | |
4448 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
4449 | } |
4450 | goto dodyn; | |
9edfd1af | 4451 | |
25dbc73a AM |
4452 | case R_PPC_REL24: |
4453 | case R_PPC_REL14: | |
4454 | case R_PPC_REL14_BRTAKEN: | |
4455 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 4456 | if (h == NULL) |
25dbc73a | 4457 | break; |
7123df0e | 4458 | if (h == htab->elf.hgot) |
d7128ce4 | 4459 | { |
7123df0e | 4460 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4461 | { |
4462 | htab->plt_type = PLT_OLD; | |
4463 | htab->old_bfd = abfd; | |
4464 | } | |
d7128ce4 AM |
4465 | break; |
4466 | } | |
25dbc73a | 4467 | /* fall through */ |
ee05f2fe | 4468 | |
25dbc73a | 4469 | case R_PPC_ADDR24: |
25dbc73a AM |
4470 | case R_PPC_ADDR14: |
4471 | case R_PPC_ADDR14_BRTAKEN: | |
4472 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 4473 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
4474 | { |
4475 | /* We may need a plt entry if the symbol turns out to be | |
4476 | a function defined in a dynamic object. */ | |
e054468f | 4477 | h->needs_plt = 1; |
de972ffa | 4478 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 4479 | return FALSE; |
625af618 | 4480 | break; |
25dbc73a | 4481 | } |
7619e7c7 | 4482 | |
25dbc73a AM |
4483 | dodyn: |
4484 | /* If we are creating a shared library, and this is a reloc | |
4485 | against a global symbol, or a non PC relative reloc | |
4486 | against a local symbol, then we need to copy the reloc | |
4487 | into the shared library. However, if we are linking with | |
4488 | -Bsymbolic, we do not need to copy a reloc against a | |
4489 | global symbol which is defined in an object we are | |
4490 | including in the link (i.e., DEF_REGULAR is set). At | |
4491 | this point we have not seen all the input files, so it is | |
4492 | possible that DEF_REGULAR is not set now but will be set | |
4493 | later (it is never cleared). In case of a weak definition, | |
4494 | DEF_REGULAR may be cleared later by a strong definition in | |
4495 | a shared library. We account for that possibility below by | |
4496 | storing information in the dyn_relocs field of the hash | |
4497 | table entry. A similar situation occurs when creating | |
4498 | shared libraries and symbol visibility changes render the | |
4499 | symbol local. | |
7619e7c7 | 4500 | |
25dbc73a AM |
4501 | If on the other hand, we are creating an executable, we |
4502 | may need to keep relocations for symbols satisfied by a | |
4503 | dynamic library if we manage to avoid copy relocs for the | |
4504 | symbol. */ | |
0e1862bb | 4505 | if ((bfd_link_pic (info) |
1d483afe | 4506 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 4507 | || (h != NULL |
198f1157 | 4508 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
4509 | || h->root.type == bfd_link_hash_defweak |
4510 | || !h->def_regular)))) | |
4511 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 4512 | && !bfd_link_pic (info) |
25dbc73a AM |
4513 | && h != NULL |
4514 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 4515 | || !h->def_regular))) |
25dbc73a | 4516 | { |
25dbc73a AM |
4517 | #ifdef DEBUG |
4518 | fprintf (stderr, | |
4519 | "ppc_elf_check_relocs needs to " | |
4520 | "create relocation for %s\n", | |
4521 | (h && h->root.root.string | |
4522 | ? h->root.root.string : "<unknown>")); | |
4523 | #endif | |
4524 | if (sreloc == NULL) | |
4525 | { | |
c9a2f333 AM |
4526 | if (htab->elf.dynobj == NULL) |
4527 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
4528 | |
4529 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
4530 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
4531 | ||
25dbc73a | 4532 | if (sreloc == NULL) |
83bac4b0 | 4533 | return FALSE; |
25dbc73a | 4534 | } |
7619e7c7 | 4535 | |
25dbc73a AM |
4536 | /* If this is a global symbol, we count the number of |
4537 | relocations we need for this symbol. */ | |
4538 | if (h != NULL) | |
4539 | { | |
f95f8542 AM |
4540 | struct elf_dyn_relocs *p; |
4541 | struct elf_dyn_relocs **rel_head; | |
4542 | ||
91d6fa6a | 4543 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
4544 | p = *rel_head; |
4545 | if (p == NULL || p->sec != sec) | |
4546 | { | |
4547 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4548 | if (p == NULL) | |
4549 | return FALSE; | |
4550 | p->next = *rel_head; | |
4551 | *rel_head = p; | |
4552 | p->sec = sec; | |
4553 | p->count = 0; | |
4554 | p->pc_count = 0; | |
4555 | } | |
4556 | p->count += 1; | |
4557 | if (!must_be_dyn_reloc (info, r_type)) | |
4558 | p->pc_count += 1; | |
25dbc73a AM |
4559 | } |
4560 | else | |
4561 | { | |
4562 | /* Track dynamic relocs needed for local syms too. | |
4563 | We really need local syms available to do this | |
4564 | easily. Oh well. */ | |
f95f8542 AM |
4565 | struct ppc_dyn_relocs *p; |
4566 | struct ppc_dyn_relocs **rel_head; | |
4567 | bfd_boolean is_ifunc; | |
25dbc73a | 4568 | asection *s; |
6edfbbad | 4569 | void *vpp; |
87d72d41 | 4570 | Elf_Internal_Sym *isym; |
6edfbbad | 4571 | |
87d72d41 AM |
4572 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4573 | abfd, r_symndx); | |
4574 | if (isym == NULL) | |
25dbc73a | 4575 | return FALSE; |
7fce784e | 4576 | |
87d72d41 AM |
4577 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4578 | if (s == NULL) | |
4579 | s = sec; | |
4580 | ||
6edfbbad | 4581 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
4582 | rel_head = (struct ppc_dyn_relocs **) vpp; |
4583 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4584 | p = *rel_head; | |
4585 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4586 | p = p->next; | |
4587 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4588 | { | |
4589 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4590 | if (p == NULL) | |
4591 | return FALSE; | |
4592 | p->next = *rel_head; | |
4593 | *rel_head = p; | |
4594 | p->sec = sec; | |
4595 | p->ifunc = is_ifunc; | |
4596 | p->count = 0; | |
4597 | } | |
4598 | p->count += 1; | |
25dbc73a | 4599 | } |
7619e7c7 | 4600 | } |
25dbc73a AM |
4601 | |
4602 | break; | |
7619e7c7 AM |
4603 | } |
4604 | } | |
ee05f2fe | 4605 | |
25dbc73a AM |
4606 | return TRUE; |
4607 | } | |
4608 | \f | |
005d79fd AM |
4609 | /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD |
4610 | and OBFD, and merge non-conflicting ones. */ | |
4611 | void | |
50e03d47 | 4612 | _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info) |
34c8bcba | 4613 | { |
50e03d47 | 4614 | bfd *obfd = info->output_bfd; |
c6e65352 DJ |
4615 | obj_attribute *in_attr, *in_attrs; |
4616 | obj_attribute *out_attr, *out_attrs; | |
34c8bcba | 4617 | |
c6e65352 DJ |
4618 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4619 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4620 | ||
c6e65352 DJ |
4621 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4622 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
005d79fd | 4623 | |
c6e65352 | 4624 | if (in_attr->i != out_attr->i) |
34c8bcba | 4625 | { |
005d79fd AM |
4626 | int in_fp = in_attr->i & 3; |
4627 | int out_fp = out_attr->i & 3; | |
4628 | ||
4629 | if (in_fp == 0) | |
34c8bcba | 4630 | ; |
005d79fd AM |
4631 | else if (out_fp == 0) |
4632 | { | |
4633 | out_attr->type = 1; | |
4634 | out_attr->i ^= in_fp; | |
4635 | } | |
4636 | else if (out_fp != 2 && in_fp == 2) | |
34c8bcba | 4637 | _bfd_error_handler |
695344c0 | 4638 | /* xgettext:c-format */ |
34c8bcba | 4639 | (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd); |
005d79fd AM |
4640 | else if (out_fp == 2 && in_fp != 2) |
4641 | _bfd_error_handler | |
695344c0 | 4642 | /* xgettext:c-format */ |
005d79fd AM |
4643 | (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd); |
4644 | else if (out_fp == 1 && in_fp == 3) | |
3c7b9897 | 4645 | _bfd_error_handler |
695344c0 | 4646 | /* xgettext:c-format */ |
005d79fd AM |
4647 | (_("Warning: %B uses double-precision hard float, " |
4648 | "%B uses single-precision hard float"), obfd, ibfd); | |
4649 | else if (out_fp == 3 && in_fp == 1) | |
3c7b9897 | 4650 | _bfd_error_handler |
695344c0 | 4651 | /* xgettext:c-format */ |
005d79fd AM |
4652 | (_("Warning: %B uses double-precision hard float, " |
4653 | "%B uses single-precision hard float"), ibfd, obfd); | |
4654 | ||
4655 | in_fp = in_attr->i & 0xc; | |
4656 | out_fp = out_attr->i & 0xc; | |
4657 | if (in_fp == 0) | |
4658 | ; | |
4659 | else if (out_fp == 0) | |
4660 | { | |
4661 | out_attr->type = 1; | |
4662 | out_attr->i ^= in_fp; | |
4663 | } | |
4664 | else if (out_fp != 2 * 4 && in_fp == 2 * 4) | |
3c7b9897 | 4665 | _bfd_error_handler |
695344c0 | 4666 | /* xgettext:c-format */ |
005d79fd AM |
4667 | (_("Warning: %B uses 64-bit long double, " |
4668 | "%B uses 128-bit long double"), ibfd, obfd); | |
4669 | else if (in_fp != 2 * 4 && out_fp == 2 * 4) | |
34c8bcba | 4670 | _bfd_error_handler |
695344c0 | 4671 | /* xgettext:c-format */ |
005d79fd AM |
4672 | (_("Warning: %B uses 64-bit long double, " |
4673 | "%B uses 128-bit long double"), obfd, ibfd); | |
4674 | else if (out_fp == 1 * 4 && in_fp == 3 * 4) | |
34c8bcba | 4675 | _bfd_error_handler |
695344c0 | 4676 | /* xgettext:c-format */ |
005d79fd AM |
4677 | (_("Warning: %B uses IBM long double, " |
4678 | "%B uses IEEE long double"), ibfd, obfd); | |
4679 | else if (out_fp == 3 * 4 && in_fp == 1 * 4) | |
34c8bcba | 4680 | _bfd_error_handler |
695344c0 | 4681 | /* xgettext:c-format */ |
005d79fd AM |
4682 | (_("Warning: %B uses IBM long double, " |
4683 | "%B uses IEEE long double"), obfd, ibfd); | |
c6e65352 | 4684 | } |
005d79fd AM |
4685 | } |
4686 | ||
4687 | /* Merge object attributes from IBFD into OBFD. Warn if | |
4688 | there are conflicting attributes. */ | |
4689 | static bfd_boolean | |
50e03d47 | 4690 | ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
005d79fd | 4691 | { |
50e03d47 | 4692 | bfd *obfd; |
005d79fd AM |
4693 | obj_attribute *in_attr, *in_attrs; |
4694 | obj_attribute *out_attr, *out_attrs; | |
4695 | ||
50e03d47 | 4696 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 4697 | |
50e03d47 | 4698 | obfd = info->output_bfd; |
005d79fd AM |
4699 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4700 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
c6e65352 DJ |
4701 | |
4702 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4703 | merge non-conflicting ones. */ | |
4704 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4705 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4706 | if (in_attr->i != out_attr->i) | |
4707 | { | |
005d79fd AM |
4708 | int in_vec = in_attr->i & 3; |
4709 | int out_vec = out_attr->i & 3; | |
c6e65352 | 4710 | |
005d79fd AM |
4711 | if (in_vec == 0) |
4712 | ; | |
4713 | else if (out_vec == 0) | |
c6e65352 | 4714 | { |
005d79fd AM |
4715 | out_attr->type = 1; |
4716 | out_attr->i = in_vec; | |
c6e65352 | 4717 | } |
c6e65352 DJ |
4718 | /* For now, allow generic to transition to AltiVec or SPE |
4719 | without a warning. If GCC marked files with their stack | |
4720 | alignment and used don't-care markings for files which are | |
4721 | not affected by the vector ABI, we could warn about this | |
4722 | case too. */ | |
005d79fd | 4723 | else if (in_vec == 1) |
c6e65352 | 4724 | ; |
005d79fd AM |
4725 | else if (out_vec == 1) |
4726 | { | |
4727 | out_attr->type = 1; | |
4728 | out_attr->i = in_vec; | |
4729 | } | |
4730 | else if (out_vec < in_vec) | |
c6e65352 | 4731 | _bfd_error_handler |
695344c0 | 4732 | /* xgettext:c-format */ |
005d79fd AM |
4733 | (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"), |
4734 | obfd, ibfd); | |
4735 | else if (out_vec > in_vec) | |
c6e65352 | 4736 | _bfd_error_handler |
695344c0 | 4737 | /* xgettext:c-format */ |
005d79fd AM |
4738 | (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"), |
4739 | ibfd, obfd); | |
34c8bcba JM |
4740 | } |
4741 | ||
f82e0623 NF |
4742 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4743 | and merge non-conflicting ones. */ | |
4744 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4745 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4746 | if (in_attr->i != out_attr->i) | |
4747 | { | |
005d79fd AM |
4748 | int in_struct = in_attr->i & 3; |
4749 | int out_struct = out_attr->i & 3; | |
4750 | ||
4751 | if (in_struct == 0 || in_struct == 3) | |
f82e0623 | 4752 | ; |
005d79fd AM |
4753 | else if (out_struct == 0) |
4754 | { | |
4755 | out_attr->type = 1; | |
4756 | out_attr->i = in_struct; | |
4757 | } | |
4758 | else if (out_struct < in_struct) | |
4759 | _bfd_error_handler | |
695344c0 | 4760 | /* xgettext:c-format */ |
005d79fd AM |
4761 | (_("Warning: %B uses r3/r4 for small structure returns, " |
4762 | "%B uses memory"), obfd, ibfd); | |
4763 | else if (out_struct > in_struct) | |
4764 | _bfd_error_handler | |
695344c0 | 4765 | /* xgettext:c-format */ |
005d79fd AM |
4766 | (_("Warning: %B uses r3/r4 for small structure returns, " |
4767 | "%B uses memory"), ibfd, obfd); | |
f82e0623 NF |
4768 | } |
4769 | ||
34c8bcba | 4770 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 4771 | _bfd_elf_merge_object_attributes (ibfd, info); |
34c8bcba JM |
4772 | |
4773 | return TRUE; | |
4774 | } | |
4775 | ||
8853c3d3 AM |
4776 | /* Merge backend specific data from an object file to the output |
4777 | object file when linking. */ | |
4778 | ||
4779 | static bfd_boolean | |
50e03d47 | 4780 | ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
8853c3d3 | 4781 | { |
50e03d47 | 4782 | bfd *obfd = info->output_bfd; |
8853c3d3 AM |
4783 | flagword old_flags; |
4784 | flagword new_flags; | |
4785 | bfd_boolean error; | |
4786 | ||
0c8d6e5c | 4787 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4788 | return TRUE; |
4789 | ||
cc643b88 | 4790 | /* Check if we have the same endianness. */ |
50e03d47 | 4791 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
8853c3d3 AM |
4792 | return FALSE; |
4793 | ||
50e03d47 | 4794 | if (!ppc_elf_merge_obj_attributes (ibfd, info)) |
34c8bcba JM |
4795 | return FALSE; |
4796 | ||
8853c3d3 AM |
4797 | new_flags = elf_elfheader (ibfd)->e_flags; |
4798 | old_flags = elf_elfheader (obfd)->e_flags; | |
4799 | if (!elf_flags_init (obfd)) | |
4800 | { | |
4801 | /* First call, no flags set. */ | |
4802 | elf_flags_init (obfd) = TRUE; | |
4803 | elf_elfheader (obfd)->e_flags = new_flags; | |
4804 | } | |
4805 | ||
4806 | /* Compatible flags are ok. */ | |
4807 | else if (new_flags == old_flags) | |
4808 | ; | |
4809 | ||
4810 | /* Incompatible flags. */ | |
4811 | else | |
4812 | { | |
4813 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4814 | to be linked with either. */ | |
4815 | error = FALSE; | |
4816 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4817 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4818 | { | |
4819 | error = TRUE; | |
4eca0228 | 4820 | _bfd_error_handler |
8853c3d3 AM |
4821 | (_("%B: compiled with -mrelocatable and linked with " |
4822 | "modules compiled normally"), ibfd); | |
4823 | } | |
4824 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4825 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4826 | { | |
4827 | error = TRUE; | |
4eca0228 | 4828 | _bfd_error_handler |
8853c3d3 AM |
4829 | (_("%B: compiled normally and linked with " |
4830 | "modules compiled with -mrelocatable"), ibfd); | |
4831 | } | |
4832 | ||
4833 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
4834 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
4835 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
4836 | ||
4837 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
4838 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
4839 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
4840 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
4841 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
4842 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
4843 | ||
4844 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
4845 | any module uses it. */ | |
4846 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
4847 | ||
4848 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4849 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4850 | ||
4851 | /* Warn about any other mismatches. */ | |
4852 | if (new_flags != old_flags) | |
4853 | { | |
4854 | error = TRUE; | |
4eca0228 | 4855 | _bfd_error_handler |
695344c0 | 4856 | /* xgettext:c-format */ |
cd9af601 AM |
4857 | (_("%B: uses different e_flags (%#x) fields " |
4858 | "than previous modules (%#x)"), | |
4859 | ibfd, new_flags, old_flags); | |
8853c3d3 AM |
4860 | } |
4861 | ||
4862 | if (error) | |
4863 | { | |
4864 | bfd_set_error (bfd_error_bad_value); | |
4865 | return FALSE; | |
4866 | } | |
4867 | } | |
4868 | ||
4869 | return TRUE; | |
4870 | } | |
b9c361e0 JL |
4871 | |
4872 | static void | |
95f0d0d2 | 4873 | ppc_elf_vle_split16 (bfd *input_bfd, |
08dc996f AM |
4874 | asection *input_section, |
4875 | unsigned long offset, | |
95f0d0d2 | 4876 | bfd_byte *loc, |
86c95733 | 4877 | bfd_vma value, |
08dc996f AM |
4878 | split16_format_type split16_format, |
4879 | bfd_boolean fixup) | |
b9c361e0 | 4880 | { |
08dc996f | 4881 | unsigned int insn, opcode, top5; |
b9c361e0 | 4882 | |
95f0d0d2 | 4883 | insn = bfd_get_32 (input_bfd, loc); |
673cff9b | 4884 | opcode = insn & 0xfc00f800; |
08dc996f AM |
4885 | if (opcode == E_OR2I_INSN |
4886 | || opcode == E_AND2I_DOT_INSN | |
4887 | || opcode == E_OR2IS_INSN | |
4888 | || opcode == E_LIS_INSN | |
4889 | || opcode == E_AND2IS_DOT_INSN) | |
4890 | { | |
4891 | if (split16_format != split16a_type) | |
4892 | { | |
4893 | if (fixup) | |
4894 | split16_format = split16a_type; | |
4895 | else | |
4896 | _bfd_error_handler | |
4897 | /* xgettext:c-format */ | |
4898 | (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"), | |
4899 | input_bfd, input_section, offset, opcode); | |
4900 | } | |
4901 | } | |
4902 | else if (opcode == E_ADD2I_DOT_INSN | |
4903 | || opcode == E_ADD2IS_INSN | |
4904 | || opcode == E_CMP16I_INSN | |
4905 | || opcode == E_MULL2I_INSN | |
4906 | || opcode == E_CMPL16I_INSN | |
4907 | || opcode == E_CMPH16I_INSN | |
4908 | || opcode == E_CMPHL16I_INSN) | |
4909 | { | |
4910 | if (split16_format != split16d_type) | |
4911 | { | |
4912 | if (fixup) | |
4913 | split16_format = split16d_type; | |
4914 | else | |
4915 | _bfd_error_handler | |
4916 | /* xgettext:c-format */ | |
4917 | (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"), | |
4918 | input_bfd, input_section, offset, opcode); | |
4919 | } | |
4920 | } | |
86c95733 | 4921 | top5 = value & 0xf800; |
5499c7c7 AM |
4922 | top5 = top5 << (split16_format == split16a_type ? 5 : 10); |
4923 | insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff); | |
b9c361e0 | 4924 | insn |= top5; |
86c95733 | 4925 | insn |= value & 0x7ff; |
95f0d0d2 | 4926 | bfd_put_32 (input_bfd, insn, loc); |
b9c361e0 | 4927 | } |
83eef883 AFB |
4928 | |
4929 | static void | |
4930 | ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value) | |
4931 | { | |
4932 | unsigned int insn; | |
4933 | ||
4934 | insn = bfd_get_32 (output_bfd, loc); | |
4935 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
4936 | /* Top 4 bits of value to 17..20. */ | |
4937 | insn |= (value & 0xf0000) >> 5; | |
4938 | /* Next 5 bits of the value to 11..15. */ | |
4939 | insn |= (value & 0xf800) << 5; | |
4940 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
4941 | insn |= value & 0x7ff; | |
4942 | bfd_put_32 (output_bfd, insn, loc); | |
4943 | } | |
4944 | ||
8853c3d3 | 4945 | \f |
d7128ce4 AM |
4946 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
4947 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
4948 | int | |
4949 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 4950 | struct bfd_link_info *info) |
d7128ce4 AM |
4951 | { |
4952 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 4953 | flagword flags; |
d7128ce4 AM |
4954 | |
4955 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
4956 | |
4957 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 4958 | { |
b3874e1a AM |
4959 | struct elf_link_hash_entry *h; |
4960 | ||
5446cbdf | 4961 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 4962 | htab->plt_type = PLT_OLD; |
0e1862bb | 4963 | else if (bfd_link_pic (info) |
b3874e1a AM |
4964 | && htab->elf.dynamic_sections_created |
4965 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
4966 | FALSE, FALSE, TRUE)) != NULL | |
4967 | && (h->type == STT_FUNC | |
4968 | || h->needs_plt) | |
4969 | && h->ref_regular | |
4970 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
21d68fcd | 4971 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
b3874e1a AM |
4972 | { |
4973 | /* Profiling of shared libs (and pies) is not supported with | |
4974 | secure plt, because ppc32 does profiling before a | |
4975 | function prologue and a secure plt pic call stubs needs | |
4976 | r30 to be set up. */ | |
4977 | htab->plt_type = PLT_OLD; | |
4978 | } | |
016687f8 AM |
4979 | else |
4980 | { | |
4981 | bfd *ibfd; | |
5446cbdf | 4982 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4983 | |
4984 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4985 | Use the old style bss plt if a file makes plt calls | |
4986 | without using the new relocs, and if ld isn't given | |
4987 | --secure-plt and we never see REL16 relocs. */ | |
4988 | if (plt_type == PLT_UNSET) | |
4989 | plt_type = PLT_OLD; | |
c72f2fb2 | 4990 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4991 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4992 | { |
4993 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4994 | plt_type = PLT_NEW; | |
4995 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4996 | { | |
4997 | plt_type = PLT_OLD; | |
4998 | htab->old_bfd = ibfd; | |
4999 | break; | |
5000 | } | |
5001 | } | |
5002 | htab->plt_type = plt_type; | |
5003 | } | |
5004 | } | |
5446cbdf | 5005 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
5006 | { |
5007 | if (htab->old_bfd != NULL) | |
5008 | info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"), | |
5009 | htab->old_bfd); | |
5010 | else | |
5011 | info->callbacks->einfo (_("%P: bss-plt forced by profiling\n")); | |
5012 | } | |
d7128ce4 | 5013 | |
4a3dc543 | 5014 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 5015 | |
4a3dc543 | 5016 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
5017 | { |
5018 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
5019 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
5020 | |
5021 | /* The new PLT is a loaded section. */ | |
ce558b89 AM |
5022 | if (htab->elf.splt != NULL |
5023 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags)) | |
86b9da88 AM |
5024 | return -1; |
5025 | ||
5026 | /* The new GOT is not executable. */ | |
ce558b89 AM |
5027 | if (htab->elf.sgot != NULL |
5028 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags)) | |
86b9da88 | 5029 | return -1; |
d7128ce4 AM |
5030 | } |
5031 | else | |
5032 | { | |
5033 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
5034 | if (htab->glink != NULL |
5035 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
5036 | return -1; | |
d7128ce4 | 5037 | } |
4a3dc543 | 5038 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
5039 | } |
5040 | \f | |
25dbc73a AM |
5041 | /* Return the section that should be marked against GC for a given |
5042 | relocation. */ | |
586119b3 | 5043 | |
25dbc73a AM |
5044 | static asection * |
5045 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 5046 | struct bfd_link_info *info, |
25dbc73a AM |
5047 | Elf_Internal_Rela *rel, |
5048 | struct elf_link_hash_entry *h, | |
5049 | Elf_Internal_Sym *sym) | |
5050 | { | |
5051 | if (h != NULL) | |
07adf181 AM |
5052 | switch (ELF32_R_TYPE (rel->r_info)) |
5053 | { | |
5054 | case R_PPC_GNU_VTINHERIT: | |
5055 | case R_PPC_GNU_VTENTRY: | |
5056 | return NULL; | |
5057 | } | |
5058 | ||
5059 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 5060 | } |
25dbc73a | 5061 | \f |
3a71aa26 AM |
5062 | /* Set plt output section type, htab->tls_get_addr, and call the |
5063 | generic ELF tls_setup function. */ | |
7fce784e | 5064 | |
25dbc73a | 5065 | asection * |
5446cbdf | 5066 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 5067 | { |
25dbc73a | 5068 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 5069 | |
25dbc73a | 5070 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
5071 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5072 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
5073 | if (htab->plt_type != PLT_NEW) |
5074 | htab->params->no_tls_get_addr_opt = TRUE; | |
5075 | ||
5446cbdf | 5076 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
5077 | { |
5078 | struct elf_link_hash_entry *opt, *tga; | |
5079 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
5080 | FALSE, FALSE, TRUE); | |
5081 | if (opt != NULL | |
5082 | && (opt->root.type == bfd_link_hash_defined | |
5083 | || opt->root.type == bfd_link_hash_defweak)) | |
5084 | { | |
5085 | /* If glibc supports an optimized __tls_get_addr call stub, | |
5086 | signalled by the presence of __tls_get_addr_opt, and we'll | |
5087 | be calling __tls_get_addr via a plt call stub, then | |
5088 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
5089 | tga = htab->tls_get_addr; | |
5090 | if (htab->elf.dynamic_sections_created | |
5091 | && tga != NULL | |
5092 | && (tga->type == STT_FUNC | |
5093 | || tga->needs_plt) | |
5094 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
21d68fcd | 5095 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga))) |
a7f2871e AM |
5096 | { |
5097 | struct plt_entry *ent; | |
32af9f6e AM |
5098 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
5099 | if (ent->plt.refcount > 0) | |
5100 | break; | |
5101 | if (ent != NULL) | |
a7f2871e AM |
5102 | { |
5103 | tga->root.type = bfd_link_hash_indirect; | |
5104 | tga->root.u.i.link = &opt->root; | |
5105 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 5106 | opt->mark = 1; |
a7f2871e AM |
5107 | if (opt->dynindx != -1) |
5108 | { | |
5109 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
5110 | opt->dynindx = -1; | |
5111 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5112 | opt->dynstr_index); | |
5113 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
5114 | return FALSE; | |
5115 | } | |
5116 | htab->tls_get_addr = opt; | |
5117 | } | |
5118 | } | |
5119 | } | |
5120 | else | |
5446cbdf | 5121 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 5122 | } |
4a3dc543 | 5123 | if (htab->plt_type == PLT_NEW |
ce558b89 AM |
5124 | && htab->elf.splt != NULL |
5125 | && htab->elf.splt->output_section != NULL) | |
d7128ce4 | 5126 | { |
ce558b89 AM |
5127 | elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS; |
5128 | elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE; | |
d7128ce4 AM |
5129 | } |
5130 | ||
25dbc73a | 5131 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
5132 | } |
5133 | ||
3a71aa26 AM |
5134 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
5135 | HASH. */ | |
5136 | ||
5137 | static bfd_boolean | |
5138 | branch_reloc_hash_match (const bfd *ibfd, | |
5139 | const Elf_Internal_Rela *rel, | |
5140 | const struct elf_link_hash_entry *hash) | |
5141 | { | |
5142 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5143 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
5144 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
5145 | ||
e054468f | 5146 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
5147 | { |
5148 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5149 | struct elf_link_hash_entry *h; | |
5150 | ||
5151 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5152 | while (h->root.type == bfd_link_hash_indirect | |
5153 | || h->root.type == bfd_link_hash_warning) | |
5154 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5155 | if (h == hash) | |
5156 | return TRUE; | |
5157 | } | |
5158 | return FALSE; | |
5159 | } | |
5160 | ||
25dbc73a AM |
5161 | /* Run through all the TLS relocs looking for optimization |
5162 | opportunities. */ | |
252b5132 | 5163 | |
25dbc73a AM |
5164 | bfd_boolean |
5165 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
5166 | struct bfd_link_info *info) | |
252b5132 | 5167 | { |
7fce784e | 5168 | bfd *ibfd; |
25dbc73a AM |
5169 | asection *sec; |
5170 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 5171 | int pass; |
252b5132 | 5172 | |
3cbc1e5e | 5173 | if (!bfd_link_executable (info)) |
25dbc73a | 5174 | return TRUE; |
252b5132 | 5175 | |
7619e7c7 | 5176 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
5177 | if (htab == NULL) |
5178 | return FALSE; | |
5179 | ||
b7fcf6f6 AM |
5180 | /* Make two passes through the relocs. First time check that tls |
5181 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
5182 | followed by such a call. If they are not, don't do any tls |
5183 | optimization. On the second pass twiddle tls_mask flags to | |
5184 | notify relocate_section that optimization can be done, and | |
5185 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 5186 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 5187 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 AM |
5188 | { |
5189 | Elf_Internal_Sym *locsyms = NULL; | |
0ffa91dd | 5190 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 5191 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 5192 | |
b7fcf6f6 AM |
5193 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
5194 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5195 | { | |
5196 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 5197 | int expecting_tls_get_addr = 0; |
252b5132 | 5198 | |
b7fcf6f6 AM |
5199 | /* Read the relocations. */ |
5200 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5201 | info->keep_memory); | |
5202 | if (relstart == NULL) | |
5203 | return FALSE; | |
7619e7c7 | 5204 | |
b7fcf6f6 AM |
5205 | relend = relstart + sec->reloc_count; |
5206 | for (rel = relstart; rel < relend; rel++) | |
5207 | { | |
5208 | enum elf_ppc_reloc_type r_type; | |
5209 | unsigned long r_symndx; | |
5210 | struct elf_link_hash_entry *h = NULL; | |
5211 | char *tls_mask; | |
5212 | char tls_set, tls_clear; | |
5213 | bfd_boolean is_local; | |
b7fcf6f6 AM |
5214 | bfd_signed_vma *got_count; |
5215 | ||
5216 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5217 | if (r_symndx >= symtab_hdr->sh_info) | |
5218 | { | |
5219 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 5220 | |
b7fcf6f6 AM |
5221 | sym_hashes = elf_sym_hashes (ibfd); |
5222 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5223 | while (h->root.type == bfd_link_hash_indirect | |
5224 | || h->root.type == bfd_link_hash_warning) | |
5225 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5226 | } | |
7619e7c7 | 5227 | |
b7fcf6f6 AM |
5228 | is_local = FALSE; |
5229 | if (h == NULL | |
5230 | || !h->def_dynamic) | |
5231 | is_local = TRUE; | |
7619e7c7 | 5232 | |
b7fcf6f6 | 5233 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
5234 | /* If this section has old-style __tls_get_addr calls |
5235 | without marker relocs, then check that each | |
5236 | __tls_get_addr call reloc is preceded by a reloc | |
5237 | that conceivably belongs to the __tls_get_addr arg | |
5238 | setup insn. If we don't find matching arg setup | |
5239 | relocs, don't do any tls optimization. */ | |
5240 | if (pass == 0 | |
5241 | && sec->has_tls_get_addr_call | |
5242 | && h != NULL | |
5243 | && h == htab->tls_get_addr | |
5244 | && !expecting_tls_get_addr | |
5245 | && is_branch_reloc (r_type)) | |
5246 | { | |
25f53a85 | 5247 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
5248 | "TLS optimization disabled\n", |
5249 | ibfd, sec, rel->r_offset); | |
5250 | if (elf_section_data (sec)->relocs != relstart) | |
5251 | free (relstart); | |
5252 | return TRUE; | |
5253 | } | |
5254 | ||
5255 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
5256 | switch (r_type) |
5257 | { | |
5258 | case R_PPC_GOT_TLSLD16: | |
5259 | case R_PPC_GOT_TLSLD16_LO: | |
5260 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5261 | /* Fall through. */ |
b7fcf6f6 AM |
5262 | |
5263 | case R_PPC_GOT_TLSLD16_HI: | |
5264 | case R_PPC_GOT_TLSLD16_HA: | |
5265 | /* These relocs should never be against a symbol | |
5266 | defined in a shared lib. Leave them alone if | |
5267 | that turns out to be the case. */ | |
5268 | if (!is_local) | |
5269 | continue; | |
5270 | ||
5271 | /* LD -> LE */ | |
5272 | tls_set = 0; | |
5273 | tls_clear = TLS_LD; | |
5274 | break; | |
5275 | ||
5276 | case R_PPC_GOT_TLSGD16: | |
5277 | case R_PPC_GOT_TLSGD16_LO: | |
5278 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5279 | /* Fall through. */ |
b7fcf6f6 AM |
5280 | |
5281 | case R_PPC_GOT_TLSGD16_HI: | |
5282 | case R_PPC_GOT_TLSGD16_HA: | |
5283 | if (is_local) | |
5284 | /* GD -> LE */ | |
5285 | tls_set = 0; | |
5286 | else | |
5287 | /* GD -> IE */ | |
5288 | tls_set = TLS_TLS | TLS_TPRELGD; | |
5289 | tls_clear = TLS_GD; | |
5290 | break; | |
5291 | ||
5292 | case R_PPC_GOT_TPREL16: | |
5293 | case R_PPC_GOT_TPREL16_LO: | |
5294 | case R_PPC_GOT_TPREL16_HI: | |
5295 | case R_PPC_GOT_TPREL16_HA: | |
5296 | if (is_local) | |
5297 | { | |
5298 | /* IE -> LE */ | |
5299 | tls_set = 0; | |
5300 | tls_clear = TLS_TPREL; | |
5301 | break; | |
5302 | } | |
5303 | else | |
5304 | continue; | |
5305 | ||
32af9f6e AM |
5306 | case R_PPC_TLSGD: |
5307 | case R_PPC_TLSLD: | |
5308 | expecting_tls_get_addr = 2; | |
5309 | tls_set = 0; | |
5310 | tls_clear = 0; | |
5311 | break; | |
5312 | ||
b7fcf6f6 | 5313 | default: |
25dbc73a | 5314 | continue; |
b7fcf6f6 | 5315 | } |
25dbc73a | 5316 | |
b7fcf6f6 AM |
5317 | if (pass == 0) |
5318 | { | |
727fc41e | 5319 | if (!expecting_tls_get_addr |
32af9f6e AM |
5320 | || (expecting_tls_get_addr == 1 |
5321 | && !sec->has_tls_get_addr_call)) | |
b7fcf6f6 | 5322 | continue; |
25dbc73a | 5323 | |
3a71aa26 AM |
5324 | if (rel + 1 < relend |
5325 | && branch_reloc_hash_match (ibfd, rel + 1, | |
5326 | htab->tls_get_addr)) | |
5327 | continue; | |
25dbc73a | 5328 | |
b7fcf6f6 AM |
5329 | /* Uh oh, we didn't find the expected call. We |
5330 | could just mark this symbol to exclude it | |
5331 | from tls optimization but it's safer to skip | |
663a1470 | 5332 | the entire optimization. */ |
25f53a85 | 5333 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
5334 | "TLS optimization disabled\n"), |
5335 | ibfd, sec, rel->r_offset); | |
5336 | if (elf_section_data (sec)->relocs != relstart) | |
5337 | free (relstart); | |
5338 | return TRUE; | |
b7fcf6f6 | 5339 | } |
25dbc73a | 5340 | |
32af9f6e AM |
5341 | if (expecting_tls_get_addr) |
5342 | { | |
5343 | struct plt_entry *ent; | |
5344 | bfd_vma addend = 0; | |
5345 | ||
0e1862bb | 5346 | if (bfd_link_pic (info) |
32af9f6e AM |
5347 | && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24) |
5348 | addend = rel[1].r_addend; | |
5349 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
5350 | got2, addend); | |
5351 | if (ent != NULL && ent->plt.refcount > 0) | |
5352 | ent->plt.refcount -= 1; | |
5353 | ||
5354 | if (expecting_tls_get_addr == 2) | |
5355 | continue; | |
5356 | } | |
5357 | ||
b7fcf6f6 AM |
5358 | if (h != NULL) |
5359 | { | |
5360 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
5361 | got_count = &h->got.refcount; | |
5362 | } | |
5363 | else | |
5364 | { | |
b7fcf6f6 | 5365 | bfd_signed_vma *lgot_refs; |
e054468f | 5366 | struct plt_entry **local_plt; |
b7fcf6f6 | 5367 | char *lgot_masks; |
25dbc73a | 5368 | |
b7fcf6f6 AM |
5369 | if (locsyms == NULL) |
5370 | { | |
5371 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5372 | if (locsyms == NULL) | |
5373 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5374 | symtab_hdr->sh_info, | |
5375 | 0, NULL, NULL, NULL); | |
5376 | if (locsyms == NULL) | |
5377 | { | |
5378 | if (elf_section_data (sec)->relocs != relstart) | |
5379 | free (relstart); | |
5380 | return FALSE; | |
5381 | } | |
5382 | } | |
b7fcf6f6 AM |
5383 | lgot_refs = elf_local_got_refcounts (ibfd); |
5384 | if (lgot_refs == NULL) | |
5385 | abort (); | |
e054468f AM |
5386 | local_plt = (struct plt_entry **) |
5387 | (lgot_refs + symtab_hdr->sh_info); | |
5388 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
5389 | tls_mask = &lgot_masks[r_symndx]; |
5390 | got_count = &lgot_refs[r_symndx]; | |
5391 | } | |
25dbc73a | 5392 | |
b7fcf6f6 AM |
5393 | if (tls_set == 0) |
5394 | { | |
5395 | /* We managed to get rid of a got entry. */ | |
5396 | if (*got_count > 0) | |
5397 | *got_count -= 1; | |
5398 | } | |
25dbc73a | 5399 | |
b7fcf6f6 AM |
5400 | *tls_mask |= tls_set; |
5401 | *tls_mask &= ~tls_clear; | |
5402 | } | |
25dbc73a | 5403 | |
b7fcf6f6 AM |
5404 | if (elf_section_data (sec)->relocs != relstart) |
5405 | free (relstart); | |
5406 | } | |
5407 | ||
5408 | if (locsyms != NULL | |
5409 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
5410 | { | |
5411 | if (!info->keep_memory) | |
5412 | free (locsyms); | |
5413 | else | |
5414 | symtab_hdr->contents = (unsigned char *) locsyms; | |
5415 | } | |
5416 | } | |
9a23f96e | 5417 | htab->do_tls_opt = 1; |
25dbc73a AM |
5418 | return TRUE; |
5419 | } | |
5420 | \f | |
98bbb1b8 | 5421 | /* Find dynamic relocs for H that apply to read-only sections. */ |
625af618 | 5422 | |
98bbb1b8 AM |
5423 | static asection * |
5424 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
625af618 | 5425 | { |
6061a67d | 5426 | struct elf_dyn_relocs *p; |
625af618 AM |
5427 | |
5428 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5429 | { | |
5430 | asection *s = p->sec->output_section; | |
5431 | ||
98bbb1b8 AM |
5432 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
5433 | return p->sec; | |
625af618 | 5434 | } |
98bbb1b8 | 5435 | return NULL; |
625af618 AM |
5436 | } |
5437 | ||
287c7eaf AM |
5438 | /* Return true if we have dynamic relocs against H or any of its weak |
5439 | aliases, that apply to read-only sections. Cannot be used after | |
5440 | size_dynamic_sections. */ | |
5441 | ||
5442 | static bfd_boolean | |
5443 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5444 | { | |
5445 | struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h); | |
5446 | do | |
5447 | { | |
5448 | if (readonly_dynrelocs (&eh->elf)) | |
5449 | return TRUE; | |
5450 | eh = ppc_elf_hash_entry (eh->elf.u.alias); | |
5451 | } while (eh != NULL && &eh->elf != h); | |
5452 | ||
5453 | return FALSE; | |
5454 | } | |
5455 | ||
5456 | /* Return whether H has pc-relative dynamic relocs. */ | |
5457 | ||
5458 | static bfd_boolean | |
5459 | pc_dynrelocs (struct elf_link_hash_entry *h) | |
5460 | { | |
5461 | struct elf_dyn_relocs *p; | |
5462 | ||
5463 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5464 | if (p->pc_count != 0) | |
5465 | return TRUE; | |
5466 | return FALSE; | |
5467 | } | |
5468 | ||
25dbc73a AM |
5469 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5470 | regular object. The current definition is in some section of the | |
5471 | dynamic object, but we're not including those sections. We have to | |
5472 | change the definition to something the rest of the link can | |
5473 | understand. */ | |
7fce784e | 5474 | |
25dbc73a AM |
5475 | static bfd_boolean |
5476 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5477 | struct elf_link_hash_entry *h) | |
5478 | { | |
5479 | struct ppc_elf_link_hash_table *htab; | |
5480 | asection *s; | |
7fce784e | 5481 | |
25dbc73a AM |
5482 | #ifdef DEBUG |
5483 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
5484 | h->root.root.string); | |
5485 | #endif | |
252b5132 | 5486 | |
25dbc73a AM |
5487 | /* Make sure we know what is going on here. */ |
5488 | htab = ppc_elf_hash_table (info); | |
5489 | BFD_ASSERT (htab->elf.dynobj != NULL | |
5490 | && (h->needs_plt | |
91e21fb7 | 5491 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 5492 | || h->is_weakalias |
25dbc73a AM |
5493 | || (h->def_dynamic |
5494 | && h->ref_regular | |
5495 | && !h->def_regular))); | |
252b5132 | 5496 | |
25dbc73a AM |
5497 | /* Deal with function syms. */ |
5498 | if (h->type == STT_FUNC | |
e054468f | 5499 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5500 | || h->needs_plt) |
5501 | { | |
529fe20e AM |
5502 | bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h) |
5503 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
287c7eaf AM |
5504 | /* Discard dyn_relocs when non-pic if we've decided that a |
5505 | function symbol is local. */ | |
5506 | if (!bfd_link_pic (info) && local) | |
5507 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
529fe20e | 5508 | |
25dbc73a AM |
5509 | /* Clear procedure linkage table information for any symbol that |
5510 | won't need a .plt entry. */ | |
a6aa5195 AM |
5511 | struct plt_entry *ent; |
5512 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5513 | if (ent->plt.refcount > 0) | |
5514 | break; | |
5515 | if (ent == NULL | |
529fe20e | 5516 | || (h->type != STT_GNU_IFUNC && local)) |
252b5132 | 5517 | { |
25dbc73a | 5518 | /* A PLT entry is not required/allowed when: |
252b5132 | 5519 | |
25dbc73a AM |
5520 | 1. We are not using ld.so; because then the PLT entry |
5521 | can't be set up, so we can't use one. In this case, | |
5522 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 5523 | |
25dbc73a AM |
5524 | 2. GC has rendered the entry unused. |
5525 | ||
5526 | 3. We know for certain that a call to this symbol | |
5527 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 5528 | h->plt.plist = NULL; |
25dbc73a | 5529 | h->needs_plt = 0; |
d1eca1e4 | 5530 | h->pointer_equality_needed = 0; |
25dbc73a | 5531 | } |
625af618 AM |
5532 | else |
5533 | { | |
d1eca1e4 AM |
5534 | /* Taking a function's address in a read/write section |
5535 | doesn't require us to define the function symbol in the | |
1009ef28 | 5536 | executable on a plt call stub. A dynamic reloc can |
f0158f44 AM |
5537 | be used instead, giving better runtime performance. |
5538 | (Calls via that function pointer don't need to bounce | |
5539 | through the plt call stub.) Similarly, use a dynamic | |
5540 | reloc for a weak reference when possible, allowing the | |
5541 | resolution of the symbol to be set at load time rather | |
5542 | than link time. */ | |
5543 | if ((h->pointer_equality_needed | |
3988aed5 AM |
5544 | || (h->non_got_ref |
5545 | && !h->ref_regular_nonweak | |
5546 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
1009ef28 AM |
5547 | && !htab->is_vxworks |
5548 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
98bbb1b8 | 5549 | && !readonly_dynrelocs (h)) |
d1eca1e4 AM |
5550 | { |
5551 | h->pointer_equality_needed = 0; | |
3988aed5 AM |
5552 | /* If we haven't seen a branch reloc then we don't need |
5553 | a plt entry. */ | |
5554 | if (!h->needs_plt) | |
5555 | h->plt.plist = NULL; | |
d1eca1e4 | 5556 | } |
287c7eaf | 5557 | else if (!bfd_link_pic (info)) |
529fe20e AM |
5558 | /* We are going to be defining the function symbol on the |
5559 | plt stub, so no dyn_relocs needed when non-pic. */ | |
287c7eaf | 5560 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
625af618 | 5561 | } |
d3e454b9 | 5562 | h->protected_def = 0; |
3988aed5 | 5563 | /* Function symbols can't have copy relocs. */ |
25dbc73a | 5564 | return TRUE; |
252b5132 | 5565 | } |
25dbc73a | 5566 | else |
a6aa5195 | 5567 | h->plt.plist = NULL; |
252b5132 | 5568 | |
25dbc73a AM |
5569 | /* If this is a weak symbol, and there is a real definition, the |
5570 | processor independent code will have arranged for us to see the | |
5571 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 5572 | if (h->is_weakalias) |
252b5132 | 5573 | { |
60d67dc8 AM |
5574 | struct elf_link_hash_entry *def = weakdef (h); |
5575 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
5576 | h->root.u.def.section = def->root.u.def.section; | |
5577 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
5578 | if (def->root.u.def.section == htab->elf.sdynbss |
5579 | || def->root.u.def.section == htab->elf.sdynrelro | |
5580 | || def->root.u.def.section == htab->dynsbss) | |
5581 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
25dbc73a AM |
5582 | return TRUE; |
5583 | } | |
dc810e39 | 5584 | |
25dbc73a AM |
5585 | /* This is a reference to a symbol defined by a dynamic object which |
5586 | is not a function. */ | |
252b5132 | 5587 | |
25dbc73a AM |
5588 | /* If we are creating a shared library, we must presume that the |
5589 | only references to the symbol are via the global offset table. | |
5590 | For such cases we need not do anything here; the relocations will | |
5591 | be handled correctly by relocate_section. */ | |
0e1862bb | 5592 | if (bfd_link_pic (info)) |
d3e454b9 AM |
5593 | { |
5594 | h->protected_def = 0; | |
5595 | return TRUE; | |
5596 | } | |
252b5132 | 5597 | |
25dbc73a AM |
5598 | /* If there are no references to this symbol that do not use the |
5599 | GOT, we don't need to generate a copy reloc. */ | |
5600 | if (!h->non_got_ref) | |
d3e454b9 AM |
5601 | { |
5602 | h->protected_def = 0; | |
5603 | return TRUE; | |
5604 | } | |
5605 | ||
5606 | /* Protected variables do not work with .dynbss. The copy in | |
5607 | .dynbss won't be used by the shared library with the protected | |
5608 | definition for the variable. Editing to PIC, or text relocations | |
5609 | are preferable to an incorrect program. */ | |
5610 | if (h->protected_def) | |
5611 | { | |
5612 | if (ELIMINATE_COPY_RELOCS | |
5613 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
5614 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
5615 | && htab->params->pic_fixup == 0 | |
5616 | && info->disable_target_specific_optimizations <= 1) | |
5617 | htab->params->pic_fixup = 1; | |
d3e454b9 AM |
5618 | return TRUE; |
5619 | } | |
25dbc73a | 5620 | |
a127494f AM |
5621 | /* If -z nocopyreloc was given, we won't generate them either. */ |
5622 | if (info->nocopyreloc) | |
529fe20e | 5623 | return TRUE; |
a127494f | 5624 | |
dce2246a | 5625 | /* If we don't find any dynamic relocs in read-only sections, then |
cfd2c773 NS |
5626 | we'll be keeping the dynamic relocs and avoiding the copy reloc. |
5627 | We can't do this if there are any small data relocations. This | |
5628 | doesn't work on VxWorks, where we can not have dynamic | |
5629 | relocations (other than copy and jump slot relocations) in an | |
5630 | executable. */ | |
4dc4a9a5 | 5631 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 5632 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
5633 | && !htab->is_vxworks |
5634 | && !h->def_regular | |
287c7eaf | 5635 | && !alias_readonly_dynrelocs (h)) |
529fe20e | 5636 | return TRUE; |
252b5132 | 5637 | |
25dbc73a AM |
5638 | /* We must allocate the symbol in our .dynbss section, which will |
5639 | become part of the .bss section of the executable. There will be | |
5640 | an entry for this symbol in the .dynsym section. The dynamic | |
5641 | object will contain position independent code, so all references | |
5642 | from the dynamic object to this symbol will go through the global | |
5643 | offset table. The dynamic linker will use the .dynsym entry to | |
5644 | determine the address it must put in the global offset table, so | |
5645 | both the dynamic object and the regular object will refer to the | |
5646 | same memory location for the variable. | |
5647 | ||
4dc4a9a5 DJ |
5648 | Of course, if the symbol is referenced using SDAREL relocs, we |
5649 | must instead allocate it in .sbss. */ | |
4dc4a9a5 | 5650 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 5651 | s = htab->dynsbss; |
5474d94f AM |
5652 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
5653 | s = htab->elf.sdynrelro; | |
25dbc73a | 5654 | else |
9d19e4fd | 5655 | s = htab->elf.sdynbss; |
25dbc73a AM |
5656 | BFD_ASSERT (s != NULL); |
5657 | ||
1d7e9d18 | 5658 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
5659 | { |
5660 | asection *srel; | |
5661 | ||
4a7e5234 AM |
5662 | /* We must generate a R_PPC_COPY reloc to tell the dynamic |
5663 | linker to copy the initial value out of the dynamic object | |
5664 | and into the runtime process image. */ | |
4dc4a9a5 | 5665 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 5666 | srel = htab->relsbss; |
5474d94f AM |
5667 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
5668 | srel = htab->elf.sreldynrelro; | |
25dbc73a | 5669 | else |
9d19e4fd | 5670 | srel = htab->elf.srelbss; |
25dbc73a AM |
5671 | BFD_ASSERT (srel != NULL); |
5672 | srel->size += sizeof (Elf32_External_Rela); | |
5673 | h->needs_copy = 1; | |
5674 | } | |
7619e7c7 | 5675 | |
529fe20e | 5676 | /* We no longer want dyn_relocs. */ |
287c7eaf | 5677 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
6cabe1ea | 5678 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
5679 | } |
5680 | \f | |
ac39eb42 AM |
5681 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
5682 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
5683 | specifying the addend on the plt relocation. For -fpic code, the sym | |
5684 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
5685 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
5686 | |
5687 | static bfd_boolean | |
5688 | add_stub_sym (struct plt_entry *ent, | |
5689 | struct elf_link_hash_entry *h, | |
ac39eb42 | 5690 | struct bfd_link_info *info) |
0ba07910 AM |
5691 | { |
5692 | struct elf_link_hash_entry *sh; | |
5693 | size_t len1, len2, len3; | |
5694 | char *name; | |
ac39eb42 AM |
5695 | const char *stub; |
5696 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
5697 | ||
0e1862bb | 5698 | if (bfd_link_pic (info)) |
ac39eb42 AM |
5699 | stub = ".plt_pic32."; |
5700 | else | |
5701 | stub = ".plt_call32."; | |
0ba07910 AM |
5702 | |
5703 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 5704 | len2 = strlen (stub); |
0ba07910 AM |
5705 | len3 = 0; |
5706 | if (ent->sec) | |
5707 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 5708 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
5709 | if (name == NULL) |
5710 | return FALSE; | |
5711 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
5712 | if (ent->sec) | |
5713 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
5714 | memcpy (name + 8 + len3, stub, len2); |
5715 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
5716 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
5717 | if (sh == NULL) | |
5718 | return FALSE; | |
5719 | if (sh->root.type == bfd_link_hash_new) | |
5720 | { | |
5721 | sh->root.type = bfd_link_hash_defined; | |
5722 | sh->root.u.def.section = htab->glink; | |
5723 | sh->root.u.def.value = ent->glink_offset; | |
5724 | sh->ref_regular = 1; | |
5725 | sh->def_regular = 1; | |
5726 | sh->ref_regular_nonweak = 1; | |
5727 | sh->forced_local = 1; | |
5728 | sh->non_elf = 0; | |
2ec55de3 | 5729 | sh->root.linker_def = 1; |
0ba07910 AM |
5730 | } |
5731 | return TRUE; | |
5732 | } | |
5733 | ||
3b36f7e6 AM |
5734 | /* Allocate NEED contiguous space in .got, and return the offset. |
5735 | Handles allocation of the got header when crossing 32k. */ | |
5736 | ||
5737 | static bfd_vma | |
5738 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5739 | { | |
5740 | bfd_vma where; | |
4a3dc543 | 5741 | unsigned int max_before_header; |
3b36f7e6 | 5742 | |
4a3dc543 | 5743 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 | 5744 | { |
ce558b89 AM |
5745 | where = htab->elf.sgot->size; |
5746 | htab->elf.sgot->size += need; | |
9d8504b1 | 5747 | } |
3b36f7e6 AM |
5748 | else |
5749 | { | |
4a3dc543 RS |
5750 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5751 | if (need <= htab->got_gap) | |
3b36f7e6 | 5752 | { |
4a3dc543 RS |
5753 | where = max_before_header - htab->got_gap; |
5754 | htab->got_gap -= need; | |
5755 | } | |
5756 | else | |
5757 | { | |
ce558b89 AM |
5758 | if (htab->elf.sgot->size + need > max_before_header |
5759 | && htab->elf.sgot->size <= max_before_header) | |
4a3dc543 | 5760 | { |
ce558b89 AM |
5761 | htab->got_gap = max_before_header - htab->elf.sgot->size; |
5762 | htab->elf.sgot->size = max_before_header + htab->got_header_size; | |
4a3dc543 | 5763 | } |
ce558b89 AM |
5764 | where = htab->elf.sgot->size; |
5765 | htab->elf.sgot->size += need; | |
3b36f7e6 | 5766 | } |
3b36f7e6 AM |
5767 | } |
5768 | return where; | |
5769 | } | |
5770 | ||
f15d0b54 AM |
5771 | /* Calculate size of GOT entries for symbol given its TLS_MASK. |
5772 | TLS_LD is excluded because those go in a special GOT slot. */ | |
5773 | ||
5774 | static inline unsigned int | |
5775 | got_entries_needed (int tls_mask) | |
5776 | { | |
5777 | unsigned int need; | |
5778 | if ((tls_mask & TLS_TLS) == 0) | |
5779 | need = 4; | |
5780 | else | |
5781 | { | |
5782 | need = 0; | |
5783 | if ((tls_mask & TLS_GD) != 0) | |
5784 | need += 8; | |
5785 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5786 | need += 4; | |
5787 | if ((tls_mask & TLS_DTPREL) != 0) | |
5788 | need += 4; | |
5789 | } | |
5790 | return need; | |
5791 | } | |
5792 | ||
5793 | /* Calculate size of relocs needed for symbol given its TLS_MASK and | |
5794 | NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at | |
5795 | link time. */ | |
5796 | ||
5797 | static inline unsigned int | |
5798 | got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known) | |
5799 | { | |
5800 | /* All the entries we allocated need relocs. | |
5801 | Except IE in executable with a local symbol. We could also omit | |
5802 | the DTPREL reloc on the second word of a GD entry under the same | |
5803 | condition as that for IE, but ld.so needs to differentiate | |
5804 | LD and GD entries. */ | |
5805 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known) | |
5806 | need -= 4; | |
5807 | return need * sizeof (Elf32_External_Rela) / 4; | |
5808 | } | |
5809 | ||
46434633 | 5810 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
5811 | |
5812 | static bfd_boolean | |
46434633 AM |
5813 | ensure_undef_dynamic (struct bfd_link_info *info, |
5814 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
5815 | { |
5816 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5817 | ||
5818 | if (htab->dynamic_sections_created | |
46434633 AM |
5819 | && ((info->dynamic_undefined_weak != 0 |
5820 | && h->root.type == bfd_link_hash_undefweak) | |
5821 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
5822 | && h->dynindx == -1 |
5823 | && !h->forced_local | |
5824 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5825 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
5826 | return TRUE; | |
5827 | } | |
5828 | ||
25dbc73a | 5829 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5830 | |
b34976b6 | 5831 | static bfd_boolean |
25dbc73a | 5832 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5833 | { |
25dbc73a AM |
5834 | struct bfd_link_info *info = inf; |
5835 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5836 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5837 | struct elf_dyn_relocs *p; |
f0158f44 | 5838 | bfd_boolean dyn; |
252b5132 | 5839 | |
25dbc73a | 5840 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5841 | return TRUE; |
252b5132 | 5842 | |
7619e7c7 | 5843 | htab = ppc_elf_hash_table (info); |
25dbc73a | 5844 | eh = (struct ppc_elf_link_hash_entry *) h; |
d3e454b9 AM |
5845 | if (eh->elf.got.refcount > 0 |
5846 | || (ELIMINATE_COPY_RELOCS | |
5847 | && !eh->elf.def_regular | |
5848 | && eh->elf.protected_def | |
5849 | && eh->has_addr16_ha | |
5850 | && eh->has_addr16_lo | |
5851 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5852 | { |
d6e14abc AM |
5853 | unsigned int need; |
5854 | ||
46434633 AM |
5855 | /* Make sure this symbol is output as a dynamic symbol. */ |
5856 | if (!ensure_undef_dynamic (info, &eh->elf)) | |
f0158f44 | 5857 | return FALSE; |
252b5132 | 5858 | |
d6e14abc | 5859 | need = 0; |
f15d0b54 | 5860 | if ((eh->tls_mask & TLS_LD) != 0) |
25dbc73a | 5861 | { |
f15d0b54 AM |
5862 | if (!eh->elf.def_dynamic) |
5863 | /* We'll just use htab->tlsld_got.offset. This should | |
5864 | always be the case. It's a little odd if we have | |
5865 | a local dynamic reloc against a non-local symbol. */ | |
5866 | htab->tlsld_got.refcount += 1; | |
5867 | else | |
d6e14abc | 5868 | need += 8; |
d6e14abc | 5869 | } |
f15d0b54 | 5870 | need += got_entries_needed (eh->tls_mask); |
d6e14abc AM |
5871 | if (need == 0) |
5872 | eh->elf.got.offset = (bfd_vma) -1; | |
5873 | else | |
5874 | { | |
3b36f7e6 | 5875 | eh->elf.got.offset = allocate_got (htab, need); |
0e1862bb | 5876 | if ((bfd_link_pic (info) |
f0158f44 AM |
5877 | || (htab->elf.dynamic_sections_created |
5878 | && eh->elf.dynindx != -1 | |
5879 | && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
21d68fcd | 5880 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf)) |
252b5132 | 5881 | { |
f15d0b54 AM |
5882 | asection *rsec; |
5883 | bfd_boolean tprel_known = (bfd_link_executable (info) | |
5884 | && SYMBOL_REFERENCES_LOCAL (info, | |
5885 | &eh->elf)); | |
5886 | ||
5887 | need = got_relocs_needed (eh->tls_mask, need, tprel_known); | |
5888 | if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic) | |
5889 | need -= sizeof (Elf32_External_Rela); | |
5890 | rsec = htab->elf.srelgot; | |
0bed072f | 5891 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5892 | rsec = htab->elf.irelplt; |
f15d0b54 | 5893 | rsec->size += need; |
252b5132 | 5894 | } |
25dbc73a AM |
5895 | } |
5896 | } | |
5897 | else | |
5898 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5899 | |
954b63d4 AM |
5900 | /* If no dynamic sections we can't have dynamic relocs, except for |
5901 | IFUNCs which are handled even in static executables. */ | |
f0158f44 AM |
5902 | if (!htab->elf.dynamic_sections_created |
5903 | && h->type != STT_GNU_IFUNC) | |
5904 | eh->dyn_relocs = NULL; | |
5905 | ||
529fe20e AM |
5906 | /* Discard relocs on undefined symbols that must be local. */ |
5907 | else if (h->root.type == bfd_link_hash_undefined | |
5908 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
5909 | eh->dyn_relocs = NULL; | |
5910 | ||
5911 | /* Also discard relocs on undefined weak syms with non-default | |
5912 | visibility, or when dynamic_undefined_weak says so. */ | |
5913 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
5914 | eh->dyn_relocs = NULL; | |
5915 | ||
f0158f44 | 5916 | if (eh->dyn_relocs == NULL) |
287c7eaf | 5917 | ; |
252b5132 | 5918 | |
25dbc73a AM |
5919 | /* In the shared -Bsymbolic case, discard space allocated for |
5920 | dynamic pc-relative relocs against symbols which turn out to be | |
5921 | defined in regular objects. For the normal shared case, discard | |
5922 | space for relocs that have become local due to symbol visibility | |
5923 | changes. */ | |
f0158f44 | 5924 | else if (bfd_link_pic (info)) |
25dbc73a AM |
5925 | { |
5926 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 5927 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
5928 | generated via assembly. We want calls to protected symbols to |
5929 | resolve directly to the function rather than going via the plt. | |
5930 | If people want function pointer comparisons to work as expected | |
5931 | then they should avoid writing weird assembly. */ | |
529fe20e | 5932 | if (SYMBOL_CALLS_LOCAL (info, h)) |
25dbc73a | 5933 | { |
6061a67d | 5934 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
5935 | |
5936 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 5937 | { |
25dbc73a AM |
5938 | p->count -= p->pc_count; |
5939 | p->pc_count = 0; | |
5940 | if (p->count == 0) | |
5941 | *pp = p->next; | |
5942 | else | |
5943 | pp = &p->next; | |
252b5132 | 5944 | } |
25dbc73a | 5945 | } |
252b5132 | 5946 | |
3348747a NS |
5947 | if (htab->is_vxworks) |
5948 | { | |
6061a67d | 5949 | struct elf_dyn_relocs **pp; |
3348747a NS |
5950 | |
5951 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5952 | { | |
5953 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
5954 | *pp = p->next; | |
5955 | else | |
5956 | pp = &p->next; | |
5957 | } | |
5958 | } | |
5959 | ||
954b63d4 | 5960 | if (eh->dyn_relocs != NULL) |
25dbc73a | 5961 | { |
46434633 AM |
5962 | /* Make sure this symbol is output as a dynamic symbol. */ |
5963 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5964 | return FALSE; |
25dbc73a AM |
5965 | } |
5966 | } | |
5967 | else if (ELIMINATE_COPY_RELOCS) | |
5968 | { | |
f0158f44 | 5969 | /* For the non-pic case, discard space for relocs against |
25dbc73a AM |
5970 | symbols which turn out to need copy relocs or are not |
5971 | dynamic. */ | |
529fe20e | 5972 | if (h->dynamic_adjusted |
d3e454b9 | 5973 | && !h->def_regular |
529fe20e | 5974 | && !ELF_COMMON_DEF_P (h) |
d3e454b9 AM |
5975 | && !(h->protected_def |
5976 | && eh->has_addr16_ha | |
5977 | && eh->has_addr16_lo | |
5978 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5979 | { |
46434633 AM |
5980 | /* Make sure this symbol is output as a dynamic symbol. */ |
5981 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5982 | return FALSE; |
7619e7c7 | 5983 | |
f0158f44 | 5984 | if (h->dynindx == -1) |
287c7eaf | 5985 | eh->dyn_relocs = NULL; |
25dbc73a | 5986 | } |
f0158f44 | 5987 | else |
287c7eaf | 5988 | eh->dyn_relocs = NULL; |
25dbc73a | 5989 | } |
252b5132 | 5990 | |
f0158f44 | 5991 | /* Allocate space. */ |
25dbc73a AM |
5992 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5993 | { | |
5994 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 5995 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5996 | sreloc = htab->elf.irelplt; |
25dbc73a AM |
5997 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
5998 | } | |
252b5132 | 5999 | |
f0158f44 AM |
6000 | /* Handle PLT relocs. Done last, after dynindx has settled. */ |
6001 | dyn = htab->elf.dynamic_sections_created && h->dynindx != -1; | |
6002 | if (dyn || h->type == STT_GNU_IFUNC) | |
6003 | { | |
6004 | struct plt_entry *ent; | |
6005 | bfd_boolean doneone = FALSE; | |
6006 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6007 | ||
6008 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6009 | if (ent->plt.refcount > 0) | |
6010 | { | |
6011 | asection *s = htab->elf.splt; | |
6012 | ||
6013 | if (!dyn) | |
6014 | s = htab->elf.iplt; | |
6015 | ||
6016 | if (htab->plt_type == PLT_NEW || !dyn) | |
6017 | { | |
6018 | if (!doneone) | |
6019 | { | |
6020 | plt_offset = s->size; | |
6021 | s->size += 4; | |
6022 | } | |
6023 | ent->plt.offset = plt_offset; | |
6024 | ||
6025 | s = htab->glink; | |
6026 | if (!doneone || bfd_link_pic (info)) | |
6027 | { | |
6028 | glink_offset = s->size; | |
9e390558 | 6029 | s->size += GLINK_ENTRY_SIZE (htab, h); |
f0158f44 AM |
6030 | } |
6031 | if (!doneone | |
6032 | && !bfd_link_pic (info) | |
6033 | && h->def_dynamic | |
6034 | && !h->def_regular) | |
6035 | { | |
6036 | h->root.u.def.section = s; | |
6037 | h->root.u.def.value = glink_offset; | |
6038 | } | |
6039 | ent->glink_offset = glink_offset; | |
6040 | ||
6041 | if (htab->params->emit_stub_syms | |
6042 | && !add_stub_sym (ent, h, info)) | |
6043 | return FALSE; | |
6044 | } | |
6045 | else | |
6046 | { | |
6047 | if (!doneone) | |
6048 | { | |
6049 | /* If this is the first .plt entry, make room | |
6050 | for the special first entry. */ | |
6051 | if (s->size == 0) | |
6052 | s->size += htab->plt_initial_entry_size; | |
6053 | ||
6054 | /* The PowerPC PLT is actually composed of two | |
6055 | parts, the first part is 2 words (for a load | |
6056 | and a jump), and then there is a remaining | |
6057 | word available at the end. */ | |
6058 | plt_offset = (htab->plt_initial_entry_size | |
6059 | + (htab->plt_slot_size | |
6060 | * ((s->size | |
6061 | - htab->plt_initial_entry_size) | |
6062 | / htab->plt_entry_size))); | |
6063 | ||
6064 | /* If this symbol is not defined in a regular | |
6065 | file, and we are not generating a shared | |
6066 | library, then set the symbol to this location | |
6067 | in the .plt. This is to avoid text | |
6068 | relocations, and is required to make | |
6069 | function pointers compare as equal between | |
6070 | the normal executable and the shared library. */ | |
6071 | if (! bfd_link_pic (info) | |
6072 | && h->def_dynamic | |
6073 | && !h->def_regular) | |
6074 | { | |
6075 | h->root.u.def.section = s; | |
6076 | h->root.u.def.value = plt_offset; | |
6077 | } | |
6078 | ||
6079 | /* Make room for this entry. */ | |
6080 | s->size += htab->plt_entry_size; | |
6081 | /* After the 8192nd entry, room for two entries | |
6082 | is allocated. */ | |
6083 | if (htab->plt_type == PLT_OLD | |
6084 | && (s->size - htab->plt_initial_entry_size) | |
6085 | / htab->plt_entry_size | |
6086 | > PLT_NUM_SINGLE_ENTRIES) | |
6087 | s->size += htab->plt_entry_size; | |
6088 | } | |
6089 | ent->plt.offset = plt_offset; | |
6090 | } | |
6091 | ||
6092 | /* We also need to make an entry in the .rela.plt section. */ | |
6093 | if (!doneone) | |
6094 | { | |
6095 | if (!dyn) | |
6096 | htab->elf.irelplt->size += sizeof (Elf32_External_Rela); | |
6097 | else | |
6098 | { | |
6099 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
6100 | ||
6101 | if (htab->plt_type == PLT_VXWORKS) | |
6102 | { | |
6103 | /* Allocate space for the unloaded relocations. */ | |
6104 | if (!bfd_link_pic (info) | |
6105 | && htab->elf.dynamic_sections_created) | |
6106 | { | |
6107 | if (ent->plt.offset | |
6108 | == (bfd_vma) htab->plt_initial_entry_size) | |
6109 | { | |
6110 | htab->srelplt2->size | |
6111 | += (sizeof (Elf32_External_Rela) | |
6112 | * VXWORKS_PLTRESOLVE_RELOCS); | |
6113 | } | |
6114 | ||
6115 | htab->srelplt2->size | |
6116 | += (sizeof (Elf32_External_Rela) | |
6117 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
6118 | } | |
6119 | ||
6120 | /* Every PLT entry has an associated GOT entry in | |
6121 | .got.plt. */ | |
6122 | htab->elf.sgotplt->size += 4; | |
6123 | } | |
6124 | } | |
6125 | doneone = TRUE; | |
6126 | } | |
6127 | } | |
6128 | else | |
6129 | ent->plt.offset = (bfd_vma) -1; | |
6130 | ||
6131 | if (!doneone) | |
6132 | { | |
6133 | h->plt.plist = NULL; | |
6134 | h->needs_plt = 0; | |
6135 | } | |
6136 | } | |
6137 | else | |
6138 | { | |
6139 | h->plt.plist = NULL; | |
6140 | h->needs_plt = 0; | |
6141 | } | |
6142 | ||
25dbc73a AM |
6143 | return TRUE; |
6144 | } | |
7619e7c7 | 6145 | |
625af618 AM |
6146 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
6147 | read-only sections. */ | |
7619e7c7 | 6148 | |
25dbc73a | 6149 | static bfd_boolean |
0caf6c82 | 6150 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
25dbc73a | 6151 | { |
98bbb1b8 | 6152 | asection *sec; |
0caf6c82 | 6153 | |
25dbc73a AM |
6154 | if (h->root.type == bfd_link_hash_indirect) |
6155 | return TRUE; | |
252b5132 | 6156 | |
98bbb1b8 AM |
6157 | sec = readonly_dynrelocs (h); |
6158 | if (sec != NULL) | |
25dbc73a | 6159 | { |
98bbb1b8 AM |
6160 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
6161 | ||
0caf6c82 | 6162 | info->flags |= DF_TEXTREL; |
98bbb1b8 | 6163 | info->callbacks->minfo |
63c1f59d AM |
6164 | (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"), |
6165 | sec->owner, h->root.root.string, sec); | |
ee05f2fe | 6166 | |
625af618 AM |
6167 | /* Not an error, just cut short the traversal. */ |
6168 | return FALSE; | |
25dbc73a AM |
6169 | } |
6170 | return TRUE; | |
6171 | } | |
6172 | ||
6177242a AM |
6173 | static const unsigned char glink_eh_frame_cie[] = |
6174 | { | |
6175 | 0, 0, 0, 16, /* length. */ | |
6176 | 0, 0, 0, 0, /* id. */ | |
6177 | 1, /* CIE version. */ | |
6178 | 'z', 'R', 0, /* Augmentation string. */ | |
6179 | 4, /* Code alignment. */ | |
6180 | 0x7c, /* Data alignment. */ | |
6181 | 65, /* RA reg. */ | |
6182 | 1, /* Augmentation size. */ | |
6183 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
6184 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
6185 | }; | |
6186 | ||
25dbc73a AM |
6187 | /* Set the sizes of the dynamic sections. */ |
6188 | ||
6189 | static bfd_boolean | |
93d1b056 | 6190 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
6191 | struct bfd_link_info *info) |
6192 | { | |
6193 | struct ppc_elf_link_hash_table *htab; | |
6194 | asection *s; | |
6195 | bfd_boolean relocs; | |
6196 | bfd *ibfd; | |
7fce784e | 6197 | |
252b5132 | 6198 | #ifdef DEBUG |
25dbc73a | 6199 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 6200 | #endif |
252b5132 | 6201 | |
25dbc73a AM |
6202 | htab = ppc_elf_hash_table (info); |
6203 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 6204 | |
25dbc73a AM |
6205 | if (elf_hash_table (info)->dynamic_sections_created) |
6206 | { | |
6207 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 6208 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 6209 | { |
3d4d4302 | 6210 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
6211 | BFD_ASSERT (s != NULL); |
6212 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6213 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6214 | } | |
6215 | } | |
252b5132 | 6216 | |
4a3dc543 | 6217 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 6218 | htab->got_header_size = 16; |
4a3dc543 | 6219 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 6220 | htab->got_header_size = 12; |
252b5132 | 6221 | |
25dbc73a AM |
6222 | /* Set up .got offsets for local syms, and space for local dynamic |
6223 | relocs. */ | |
c72f2fb2 | 6224 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
6225 | { |
6226 | bfd_signed_vma *local_got; | |
6227 | bfd_signed_vma *end_local_got; | |
e054468f AM |
6228 | struct plt_entry **local_plt; |
6229 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
6230 | char *lgot_masks; |
6231 | bfd_size_type locsymcount; | |
6232 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 6233 | |
0c8d6e5c | 6234 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 6235 | continue; |
7fce784e | 6236 | |
25dbc73a AM |
6237 | for (s = ibfd->sections; s != NULL; s = s->next) |
6238 | { | |
f95f8542 | 6239 | struct ppc_dyn_relocs *p; |
252b5132 | 6240 | |
f95f8542 | 6241 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
6242 | elf_section_data (s)->local_dynrel); |
6243 | p != NULL; | |
6244 | p = p->next) | |
6245 | { | |
6246 | if (!bfd_is_abs_section (p->sec) | |
6247 | && bfd_is_abs_section (p->sec->output_section)) | |
6248 | { | |
6249 | /* Input section has been discarded, either because | |
6250 | it is a copy of a linkonce section or due to | |
6251 | linker script /DISCARD/, so we'll be discarding | |
6252 | the relocs too. */ | |
7fce784e | 6253 | } |
3348747a NS |
6254 | else if (htab->is_vxworks |
6255 | && strcmp (p->sec->output_section->name, | |
6256 | ".tls_vars") == 0) | |
6257 | { | |
6258 | /* Relocations in vxworks .tls_vars sections are | |
6259 | handled specially by the loader. */ | |
6260 | } | |
25dbc73a | 6261 | else if (p->count != 0) |
7fce784e | 6262 | { |
25f23106 | 6263 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 6264 | if (p->ifunc) |
ce558b89 | 6265 | sreloc = htab->elf.irelplt; |
25f23106 | 6266 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
25dbc73a AM |
6267 | if ((p->sec->output_section->flags |
6268 | & (SEC_READONLY | SEC_ALLOC)) | |
6269 | == (SEC_READONLY | SEC_ALLOC)) | |
0caf6c82 L |
6270 | { |
6271 | info->flags |= DF_TEXTREL; | |
6272 | info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"), | |
6273 | p->sec->owner, p->sec); | |
6274 | } | |
7fce784e | 6275 | } |
252b5132 | 6276 | } |
252b5132 | 6277 | } |
252b5132 | 6278 | |
25dbc73a AM |
6279 | local_got = elf_local_got_refcounts (ibfd); |
6280 | if (!local_got) | |
6281 | continue; | |
252b5132 | 6282 | |
0ffa91dd | 6283 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
6284 | locsymcount = symtab_hdr->sh_info; |
6285 | end_local_got = local_got + locsymcount; | |
e054468f AM |
6286 | local_plt = (struct plt_entry **) end_local_got; |
6287 | end_local_plt = local_plt + locsymcount; | |
6288 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 6289 | |
25dbc73a AM |
6290 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
6291 | if (*local_got > 0) | |
6292 | { | |
f15d0b54 AM |
6293 | unsigned int need; |
6294 | if ((*lgot_masks & TLS_LD) != 0) | |
6295 | htab->tlsld_got.refcount += 1; | |
6296 | need = got_entries_needed (*lgot_masks); | |
d6e14abc AM |
6297 | if (need == 0) |
6298 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
6299 | else |
6300 | { | |
3b36f7e6 | 6301 | *local_got = allocate_got (htab, need); |
0e1862bb | 6302 | if (bfd_link_pic (info)) |
0bed072f | 6303 | { |
f15d0b54 AM |
6304 | asection *srel; |
6305 | bfd_boolean tprel_known = bfd_link_executable (info); | |
6306 | ||
6307 | need = got_relocs_needed (*lgot_masks, need, tprel_known); | |
6308 | srel = htab->elf.srelgot; | |
0bed072f | 6309 | if ((*lgot_masks & PLT_IFUNC) != 0) |
ce558b89 | 6310 | srel = htab->elf.irelplt; |
f15d0b54 | 6311 | srel->size += need; |
0bed072f | 6312 | } |
25dbc73a AM |
6313 | } |
6314 | } | |
6315 | else | |
6316 | *local_got = (bfd_vma) -1; | |
e054468f AM |
6317 | |
6318 | if (htab->is_vxworks) | |
6319 | continue; | |
6320 | ||
6321 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
6322 | for (; local_plt < end_local_plt; ++local_plt) | |
6323 | { | |
6324 | struct plt_entry *ent; | |
6325 | bfd_boolean doneone = FALSE; | |
6326 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6327 | ||
6328 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
6329 | if (ent->plt.refcount > 0) | |
6330 | { | |
ce558b89 | 6331 | s = htab->elf.iplt; |
e054468f AM |
6332 | |
6333 | if (!doneone) | |
6334 | { | |
6335 | plt_offset = s->size; | |
6336 | s->size += 4; | |
6337 | } | |
6338 | ent->plt.offset = plt_offset; | |
6339 | ||
6340 | s = htab->glink; | |
0e1862bb | 6341 | if (!doneone || bfd_link_pic (info)) |
e054468f AM |
6342 | { |
6343 | glink_offset = s->size; | |
9e390558 | 6344 | s->size += GLINK_ENTRY_SIZE (htab, NULL); |
e054468f AM |
6345 | } |
6346 | ent->glink_offset = glink_offset; | |
6347 | ||
6348 | if (!doneone) | |
6349 | { | |
ce558b89 | 6350 | htab->elf.irelplt->size += sizeof (Elf32_External_Rela); |
e054468f AM |
6351 | doneone = TRUE; |
6352 | } | |
6353 | } | |
6354 | else | |
6355 | ent->plt.offset = (bfd_vma) -1; | |
6356 | } | |
25dbc73a | 6357 | } |
252b5132 | 6358 | |
b7fcf6f6 AM |
6359 | /* Allocate space for global sym dynamic relocs. */ |
6360 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
6361 | ||
3b36f7e6 AM |
6362 | if (htab->tlsld_got.refcount > 0) |
6363 | { | |
6364 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
0e1862bb | 6365 | if (bfd_link_pic (info)) |
ce558b89 | 6366 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3b36f7e6 AM |
6367 | } |
6368 | else | |
6369 | htab->tlsld_got.offset = (bfd_vma) -1; | |
6370 | ||
ce558b89 | 6371 | if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
6372 | { |
6373 | unsigned int g_o_t = 32768; | |
6374 | ||
4d962050 AM |
6375 | /* If we haven't allocated the header, do so now. When we get here, |
6376 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
6377 | or 32780 to 65536 (header allocated). For new plt/got, the | |
6378 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
ce558b89 | 6379 | if (htab->elf.sgot->size <= 32768) |
3b36f7e6 | 6380 | { |
ce558b89 | 6381 | g_o_t = htab->elf.sgot->size; |
4a3dc543 | 6382 | if (htab->plt_type == PLT_OLD) |
4d962050 | 6383 | g_o_t += 4; |
ce558b89 | 6384 | htab->elf.sgot->size += htab->got_header_size; |
3b36f7e6 | 6385 | } |
3b36f7e6 AM |
6386 | |
6387 | htab->elf.hgot->root.u.def.value = g_o_t; | |
6388 | } | |
0e1862bb | 6389 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
6390 | { |
6391 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
6392 | |
6393 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
6394 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 6395 | } |
15bfcc77 AM |
6396 | if (info->emitrelocations) |
6397 | { | |
6398 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
6399 | ||
6400 | if (sda != NULL && sda->ref_regular) | |
6401 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6402 | sda = htab->sdata[1].sym; | |
6403 | if (sda != NULL && sda->ref_regular) | |
6404 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6405 | } | |
3b36f7e6 | 6406 | |
e054468f AM |
6407 | if (htab->glink != NULL |
6408 | && htab->glink->size != 0 | |
6409 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
6410 | { |
6411 | htab->glink_pltresolve = htab->glink->size; | |
9e390558 AM |
6412 | /* Space for the branch table. */ |
6413 | htab->glink->size | |
6414 | += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4; | |
86b9da88 | 6415 | /* Pad out to align the start of PLTresolve. */ |
5446cbdf AM |
6416 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
6417 | ? 63 : 15); | |
d7128ce4 | 6418 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 6419 | |
5446cbdf | 6420 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
6421 | { |
6422 | struct elf_link_hash_entry *sh; | |
6423 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
6424 | TRUE, FALSE, FALSE); | |
6425 | if (sh == NULL) | |
6426 | return FALSE; | |
6427 | if (sh->root.type == bfd_link_hash_new) | |
6428 | { | |
6429 | sh->root.type = bfd_link_hash_defined; | |
6430 | sh->root.u.def.section = htab->glink; | |
6431 | sh->root.u.def.value = htab->glink_pltresolve; | |
6432 | sh->ref_regular = 1; | |
6433 | sh->def_regular = 1; | |
6434 | sh->ref_regular_nonweak = 1; | |
6435 | sh->forced_local = 1; | |
6436 | sh->non_elf = 0; | |
2ec55de3 | 6437 | sh->root.linker_def = 1; |
0ba07910 AM |
6438 | } |
6439 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
6440 | TRUE, FALSE, FALSE); | |
6441 | if (sh == NULL) | |
6442 | return FALSE; | |
6443 | if (sh->root.type == bfd_link_hash_new) | |
6444 | { | |
6445 | sh->root.type = bfd_link_hash_defined; | |
6446 | sh->root.u.def.section = htab->glink; | |
6447 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
6448 | sh->ref_regular = 1; | |
6449 | sh->def_regular = 1; | |
6450 | sh->ref_regular_nonweak = 1; | |
6451 | sh->forced_local = 1; | |
6452 | sh->non_elf = 0; | |
2ec55de3 | 6453 | sh->root.linker_def = 1; |
0ba07910 AM |
6454 | } |
6455 | } | |
d7128ce4 AM |
6456 | } |
6457 | ||
6177242a AM |
6458 | if (htab->glink != NULL |
6459 | && htab->glink->size != 0 | |
6460 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
6461 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
6462 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
6463 | { |
6464 | s = htab->glink_eh_frame; | |
6465 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 6466 | if (bfd_link_pic (info)) |
6177242a AM |
6467 | { |
6468 | s->size += 4; | |
6469 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
6470 | s->size += 4; | |
6471 | } | |
6472 | } | |
6473 | ||
25dbc73a AM |
6474 | /* We've now determined the sizes of the various dynamic sections. |
6475 | Allocate memory for them. */ | |
6476 | relocs = FALSE; | |
6477 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 6478 | { |
9d8504b1 PB |
6479 | bfd_boolean strip_section = TRUE; |
6480 | ||
25dbc73a AM |
6481 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
6482 | continue; | |
252b5132 | 6483 | |
ce558b89 AM |
6484 | if (s == htab->elf.splt |
6485 | || s == htab->elf.sgot) | |
25dbc73a | 6486 | { |
9d8504b1 PB |
6487 | /* We'd like to strip these sections if they aren't needed, but if |
6488 | we've exported dynamic symbols from them we must leave them. | |
6489 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 6490 | if (htab->elf.hplt != NULL) |
9d8504b1 | 6491 | strip_section = FALSE; |
25dbc73a AM |
6492 | /* Strip this section if we don't need it; see the |
6493 | comment below. */ | |
6494 | } | |
ce558b89 | 6495 | else if (s == htab->elf.iplt |
e054468f | 6496 | || s == htab->glink |
6177242a | 6497 | || s == htab->glink_eh_frame |
ce558b89 | 6498 | || s == htab->elf.sgotplt |
e054468f | 6499 | || s == htab->sbss |
9d19e4fd | 6500 | || s == htab->elf.sdynbss |
5474d94f | 6501 | || s == htab->elf.sdynrelro |
15bfcc77 | 6502 | || s == htab->dynsbss) |
25dbc73a | 6503 | { |
c9a2f333 | 6504 | /* Strip these too. */ |
25dbc73a | 6505 | } |
15bfcc77 AM |
6506 | else if (s == htab->sdata[0].section |
6507 | || s == htab->sdata[1].section) | |
6508 | { | |
6509 | strip_section = (s->flags & SEC_KEEP) == 0; | |
6510 | } | |
a0f49396 NC |
6511 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
6512 | ".rela")) | |
25dbc73a | 6513 | { |
c456f082 | 6514 | if (s->size != 0) |
25dbc73a AM |
6515 | { |
6516 | /* Remember whether there are any relocation sections. */ | |
6517 | relocs = TRUE; | |
252b5132 | 6518 | |
25dbc73a AM |
6519 | /* We use the reloc_count field as a counter if we need |
6520 | to copy relocs into the output file. */ | |
6521 | s->reloc_count = 0; | |
252b5132 RH |
6522 | } |
6523 | } | |
25dbc73a AM |
6524 | else |
6525 | { | |
6526 | /* It's not one of our sections, so don't allocate space. */ | |
6527 | continue; | |
6528 | } | |
252b5132 | 6529 | |
9d8504b1 | 6530 | if (s->size == 0 && strip_section) |
25dbc73a | 6531 | { |
c456f082 AM |
6532 | /* If we don't need this section, strip it from the |
6533 | output file. This is mostly to handle .rela.bss and | |
6534 | .rela.plt. We must create both sections in | |
6535 | create_dynamic_sections, because they must be created | |
6536 | before the linker maps input sections to output | |
6537 | sections. The linker does that before | |
6538 | adjust_dynamic_symbol is called, and it is that | |
6539 | function which decides whether anything needs to go | |
6540 | into these sections. */ | |
8423293d | 6541 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
6542 | continue; |
6543 | } | |
7fce784e | 6544 | |
d7128ce4 | 6545 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
6546 | continue; |
6547 | ||
25dbc73a AM |
6548 | /* Allocate memory for the section contents. */ |
6549 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
6550 | if (s->contents == NULL) | |
6551 | return FALSE; | |
6552 | } | |
252b5132 | 6553 | |
25dbc73a | 6554 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 6555 | { |
25dbc73a AM |
6556 | /* Add some entries to the .dynamic section. We fill in the |
6557 | values later, in ppc_elf_finish_dynamic_sections, but we | |
6558 | must add the entries now so that we get the correct size for | |
6559 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6560 | dynamic linker and used by the debugger. */ | |
6561 | #define add_dynamic_entry(TAG, VAL) \ | |
6562 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 6563 | |
0e1862bb | 6564 | if (bfd_link_executable (info)) |
7619e7c7 | 6565 | { |
25dbc73a AM |
6566 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
6567 | return FALSE; | |
7619e7c7 AM |
6568 | } |
6569 | ||
ce558b89 | 6570 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
7619e7c7 | 6571 | { |
25dbc73a AM |
6572 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6573 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6574 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
6575 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
6576 | return FALSE; | |
6577 | } | |
7619e7c7 | 6578 | |
c7e17e05 AM |
6579 | if (htab->plt_type == PLT_NEW |
6580 | && htab->glink != NULL | |
6581 | && htab->glink->size != 0) | |
d7128ce4 | 6582 | { |
1fe44d79 | 6583 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 6584 | return FALSE; |
5446cbdf | 6585 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
6586 | && htab->tls_get_addr != NULL |
6587 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 6588 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 6589 | return FALSE; |
d7128ce4 AM |
6590 | } |
6591 | ||
25dbc73a AM |
6592 | if (relocs) |
6593 | { | |
6594 | if (!add_dynamic_entry (DT_RELA, 0) | |
6595 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6596 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
6597 | return FALSE; | |
6598 | } | |
7619e7c7 | 6599 | |
25dbc73a AM |
6600 | /* If any dynamic relocs apply to a read-only section, then we |
6601 | need a DT_TEXTREL entry. */ | |
6602 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 6603 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 6604 | info); |
7619e7c7 | 6605 | |
25dbc73a AM |
6606 | if ((info->flags & DF_TEXTREL) != 0) |
6607 | { | |
6608 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
6609 | return FALSE; | |
7619e7c7 | 6610 | } |
7a2b07ff NS |
6611 | if (htab->is_vxworks |
6612 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
6613 | return FALSE; | |
6614 | } | |
25dbc73a AM |
6615 | #undef add_dynamic_entry |
6616 | ||
7e01508c AM |
6617 | if (htab->glink_eh_frame != NULL |
6618 | && htab->glink_eh_frame->contents != NULL) | |
6619 | { | |
6620 | unsigned char *p = htab->glink_eh_frame->contents; | |
6621 | bfd_vma val; | |
6622 | ||
6623 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
6624 | /* CIE length (rewrite in case little-endian). */ | |
6625 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
6626 | p += sizeof (glink_eh_frame_cie); | |
6627 | /* FDE length. */ | |
6628 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
6629 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6630 | p += 4; | |
6631 | /* CIE pointer. */ | |
6632 | val = p - htab->glink_eh_frame->contents; | |
6633 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6634 | p += 4; | |
6635 | /* Offset to .glink. Set later. */ | |
6636 | p += 4; | |
6637 | /* .glink size. */ | |
6638 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
6639 | p += 4; | |
6640 | /* Augmentation. */ | |
6641 | p += 1; | |
6642 | ||
0e1862bb | 6643 | if (bfd_link_pic (info) |
7e01508c AM |
6644 | && htab->elf.dynamic_sections_created) |
6645 | { | |
6646 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
6647 | if (adv < 64) | |
6648 | *p++ = DW_CFA_advance_loc + adv; | |
6649 | else if (adv < 256) | |
6650 | { | |
6651 | *p++ = DW_CFA_advance_loc1; | |
6652 | *p++ = adv; | |
6653 | } | |
6654 | else if (adv < 65536) | |
6655 | { | |
6656 | *p++ = DW_CFA_advance_loc2; | |
6657 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
6658 | p += 2; | |
6659 | } | |
6660 | else | |
6661 | { | |
6662 | *p++ = DW_CFA_advance_loc4; | |
6663 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
6664 | p += 4; | |
6665 | } | |
6666 | *p++ = DW_CFA_register; | |
6667 | *p++ = 65; | |
6668 | p++; | |
6669 | *p++ = DW_CFA_advance_loc + 4; | |
6670 | *p++ = DW_CFA_restore_extended; | |
6671 | *p++ = 65; | |
6672 | } | |
6673 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
6674 | == htab->glink_eh_frame->size); | |
6675 | } | |
6676 | ||
7619e7c7 AM |
6677 | return TRUE; |
6678 | } | |
0eb4a168 | 6679 | |
93d1b056 AM |
6680 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
6681 | if it looks like nothing is using them. */ | |
6682 | ||
6683 | static void | |
6684 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
6685 | { | |
6686 | struct elf_link_hash_entry *sda = lsect->sym; | |
6687 | ||
6688 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
6689 | { | |
6690 | asection *s; | |
6691 | ||
6692 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6693 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6694 | { | |
6695 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6696 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6697 | { | |
6698 | sda->def_regular = 0; | |
6699 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6700 | sda->ref_dynamic = 1; | |
6701 | sda->forced_local = 0; | |
6702 | } | |
6703 | } | |
6704 | } | |
6705 | } | |
6706 | ||
6707 | void | |
6708 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6709 | { | |
6710 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6711 | ||
6712 | if (htab != NULL) | |
6713 | { | |
6714 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6715 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6716 | } | |
6717 | } | |
6718 | ||
6719 | ||
0eb4a168 AM |
6720 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6721 | ||
6722 | static bfd_boolean | |
6723 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6724 | { | |
6725 | if (h->plt.plist != NULL | |
6726 | && !h->def_regular | |
6727 | && (!h->pointer_equality_needed | |
6728 | || !h->ref_regular_nonweak)) | |
6729 | return FALSE; | |
6730 | ||
6731 | return _bfd_elf_hash_symbol (h); | |
6732 | } | |
25dbc73a AM |
6733 | \f |
6734 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6735 | ||
01017ef8 NS |
6736 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6737 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6738 | static const int shared_stub_entry[] = |
6739 | { | |
6740 | 0x7c0802a6, /* mflr 0 */ | |
6741 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6742 | 0x7d8802a6, /* mflr 12 */ |
6743 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6744 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6745 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6746 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6747 | 0x4e800420, /* bctr */ |
6748 | }; | |
6749 | ||
6750 | static const int stub_entry[] = | |
6751 | { | |
01017ef8 NS |
6752 | 0x3d800000, /* lis 12,xxx@ha */ |
6753 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6754 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6755 | 0x4e800420, /* bctr */ |
6756 | }; | |
6757 | ||
5446cbdf AM |
6758 | struct ppc_elf_relax_info |
6759 | { | |
6760 | unsigned int workaround_size; | |
d3e454b9 | 6761 | unsigned int picfixup_size; |
5446cbdf AM |
6762 | }; |
6763 | ||
6764 | /* This function implements long branch trampolines, and the ppc476 | |
6765 | icache bug workaround. Any section needing trampolines or patch | |
6766 | space for the workaround has its size extended so that we can | |
53291d1f | 6767 | add trampolines at the end of the section. */ |
5446cbdf | 6768 | |
25dbc73a AM |
6769 | static bfd_boolean |
6770 | ppc_elf_relax_section (bfd *abfd, | |
6771 | asection *isec, | |
6772 | struct bfd_link_info *link_info, | |
6773 | bfd_boolean *again) | |
6774 | { | |
d3e454b9 | 6775 | struct one_branch_fixup |
25dbc73a | 6776 | { |
d3e454b9 | 6777 | struct one_branch_fixup *next; |
25dbc73a | 6778 | asection *tsec; |
01017ef8 NS |
6779 | /* Final link, can use the symbol offset. For a |
6780 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6781 | bfd_vma toff; |
6782 | bfd_vma trampoff; | |
6783 | }; | |
7619e7c7 | 6784 | |
25dbc73a AM |
6785 | Elf_Internal_Shdr *symtab_hdr; |
6786 | bfd_byte *contents = NULL; | |
6787 | Elf_Internal_Sym *isymbuf = NULL; | |
6788 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6789 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 6790 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 6791 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6792 | unsigned changes = 0; |
5446cbdf | 6793 | bfd_boolean workaround_change; |
d7128ce4 | 6794 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 6795 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 6796 | asection *got2; |
50248c89 | 6797 | bfd_boolean maybe_pasted; |
7619e7c7 | 6798 | |
25dbc73a | 6799 | *again = FALSE; |
7619e7c7 | 6800 | |
5446cbdf | 6801 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6802 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6803 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6804 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6805 | || isec->size < 4) | |
25dbc73a | 6806 | return TRUE; |
7619e7c7 | 6807 | |
c8a1f254 NS |
6808 | /* We cannot represent the required PIC relocs in the output, so don't |
6809 | do anything. The linker doesn't support mixing -shared and -r | |
6810 | anyway. */ | |
0e1862bb | 6811 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 6812 | return TRUE; |
5b914448 | 6813 | |
5446cbdf AM |
6814 | htab = ppc_elf_hash_table (link_info); |
6815 | if (htab == NULL) | |
6816 | return TRUE; | |
6817 | ||
6818 | isec->size = (isec->size + 3) & -4; | |
6819 | if (isec->rawsize == 0) | |
6820 | isec->rawsize = isec->size; | |
6821 | trampbase = isec->size; | |
6822 | ||
53291d1f AM |
6823 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6824 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6825 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6826 | ||
d3e454b9 AM |
6827 | if (htab->params->ppc476_workaround |
6828 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
6829 | { |
6830 | if (elf_section_data (isec)->sec_info == NULL) | |
6831 | { | |
5446cbdf AM |
6832 | elf_section_data (isec)->sec_info |
6833 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6834 | if (elf_section_data (isec)->sec_info == NULL) | |
6835 | return FALSE; | |
6836 | } | |
6837 | relax_info = elf_section_data (isec)->sec_info; | |
6838 | trampbase -= relax_info->workaround_size; | |
6839 | } | |
6840 | ||
50248c89 AM |
6841 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6842 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6843 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6844 | trampoff = trampbase; |
6845 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6846 | trampoff += 4; |
7619e7c7 | 6847 | |
0ffa91dd | 6848 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
6849 | picfixup_size = 0; |
6850 | if (htab->params->branch_trampolines | |
6851 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 6852 | { |
5446cbdf AM |
6853 | /* Get a copy of the native relocations. */ |
6854 | if (isec->reloc_count != 0) | |
25dbc73a | 6855 | { |
5446cbdf AM |
6856 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6857 | link_info->keep_memory); | |
6858 | if (internal_relocs == NULL) | |
6859 | goto error_return; | |
25dbc73a | 6860 | } |
7619e7c7 | 6861 | |
5446cbdf AM |
6862 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6863 | ||
6864 | irelend = internal_relocs + isec->reloc_count; | |
6865 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6866 | { |
5446cbdf AM |
6867 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6868 | bfd_vma toff, roff; | |
6869 | asection *tsec; | |
d3e454b9 | 6870 | struct one_branch_fixup *f; |
5446cbdf | 6871 | size_t insn_offset = 0; |
d3e454b9 | 6872 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
6873 | bfd_byte *hit_addr; |
6874 | unsigned long t0; | |
6875 | struct elf_link_hash_entry *h; | |
6876 | struct plt_entry **plist; | |
6877 | unsigned char sym_type; | |
6878 | ||
6879 | switch (r_type) | |
6880 | { | |
6881 | case R_PPC_REL24: | |
6882 | case R_PPC_LOCAL24PC: | |
6883 | case R_PPC_PLTREL24: | |
6884 | max_branch_offset = 1 << 25; | |
6885 | break; | |
6886 | ||
6887 | case R_PPC_REL14: | |
6888 | case R_PPC_REL14_BRTAKEN: | |
6889 | case R_PPC_REL14_BRNTAKEN: | |
6890 | max_branch_offset = 1 << 15; | |
6891 | break; | |
7fce784e | 6892 | |
d3e454b9 AM |
6893 | case R_PPC_ADDR16_HA: |
6894 | if (htab->params->pic_fixup > 0) | |
6895 | break; | |
6896 | continue; | |
6897 | ||
5446cbdf AM |
6898 | default: |
6899 | continue; | |
6900 | } | |
6901 | ||
6902 | /* Get the value of the symbol referred to by the reloc. */ | |
6903 | h = NULL; | |
6904 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
25dbc73a | 6905 | { |
5446cbdf AM |
6906 | /* A local symbol. */ |
6907 | Elf_Internal_Sym *isym; | |
6908 | ||
6909 | /* Read this BFD's local symbols. */ | |
25dbc73a | 6910 | if (isymbuf == NULL) |
5446cbdf AM |
6911 | { |
6912 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6913 | if (isymbuf == NULL) | |
6914 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
6915 | symtab_hdr->sh_info, 0, | |
6916 | NULL, NULL, NULL); | |
6917 | if (isymbuf == 0) | |
6918 | goto error_return; | |
6919 | } | |
6920 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6921 | if (isym->st_shndx == SHN_UNDEF) | |
6922 | tsec = bfd_und_section_ptr; | |
6923 | else if (isym->st_shndx == SHN_ABS) | |
6924 | tsec = bfd_abs_section_ptr; | |
6925 | else if (isym->st_shndx == SHN_COMMON) | |
6926 | tsec = bfd_com_section_ptr; | |
6927 | else | |
6928 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6929 | ||
6930 | toff = isym->st_value; | |
6931 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6932 | } |
25dbc73a | 6933 | else |
5446cbdf AM |
6934 | { |
6935 | /* Global symbol handling. */ | |
6936 | unsigned long indx; | |
7fce784e | 6937 | |
5446cbdf AM |
6938 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
6939 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 6940 | |
5446cbdf AM |
6941 | while (h->root.type == bfd_link_hash_indirect |
6942 | || h->root.type == bfd_link_hash_warning) | |
6943 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 6944 | |
5446cbdf AM |
6945 | if (h->root.type == bfd_link_hash_defined |
6946 | || h->root.type == bfd_link_hash_defweak) | |
6947 | { | |
6948 | tsec = h->root.u.def.section; | |
6949 | toff = h->root.u.def.value; | |
6950 | } | |
6951 | else if (h->root.type == bfd_link_hash_undefined | |
6952 | || h->root.type == bfd_link_hash_undefweak) | |
6953 | { | |
6954 | tsec = bfd_und_section_ptr; | |
0e1862bb | 6955 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
6956 | } |
6957 | else | |
6958 | continue; | |
6959 | ||
9f7552cf AM |
6960 | /* If this branch is to __tls_get_addr then we may later |
6961 | optimise away the call. We won't be needing a long- | |
6962 | branch stub in that case. */ | |
0e1862bb | 6963 | if (bfd_link_executable (link_info) |
9f7552cf AM |
6964 | && h == htab->tls_get_addr |
6965 | && irel != internal_relocs) | |
6966 | { | |
6967 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6968 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6969 | unsigned int tls_mask = 0; | |
6970 | ||
6971 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6972 | R_PPC_TLSLD, or for older object files, a reloc | |
6973 | on the __tls_get_addr arg setup insn. Get tls | |
6974 | mask bits from the symbol on that reloc. */ | |
6975 | if (t_symndx < symtab_hdr->sh_info) | |
6976 | { | |
6977 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6978 | ||
6979 | if (local_got_offsets != NULL) | |
6980 | { | |
6981 | struct plt_entry **local_plt = (struct plt_entry **) | |
6982 | (local_got_offsets + symtab_hdr->sh_info); | |
6983 | char *lgot_masks = (char *) | |
6984 | (local_plt + symtab_hdr->sh_info); | |
6985 | tls_mask = lgot_masks[t_symndx]; | |
6986 | } | |
6987 | } | |
6988 | else | |
6989 | { | |
6990 | struct elf_link_hash_entry *th | |
6991 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
6992 | ||
6993 | while (th->root.type == bfd_link_hash_indirect | |
6994 | || th->root.type == bfd_link_hash_warning) | |
6995 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
6996 | ||
6997 | tls_mask | |
6998 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
6999 | } | |
7000 | ||
7001 | /* The mask bits tell us if the call will be | |
7002 | optimised away. */ | |
7003 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
7004 | && (t_rtype == R_PPC_TLSGD | |
7005 | || t_rtype == R_PPC_GOT_TLSGD16 | |
7006 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
7007 | continue; | |
7008 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
7009 | && (t_rtype == R_PPC_TLSLD | |
7010 | || t_rtype == R_PPC_GOT_TLSLD16 | |
7011 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
7012 | continue; | |
7013 | } | |
7014 | ||
5446cbdf AM |
7015 | sym_type = h->type; |
7016 | } | |
7619e7c7 | 7017 | |
d3e454b9 AM |
7018 | if (r_type == R_PPC_ADDR16_HA) |
7019 | { | |
7020 | if (h != NULL | |
7021 | && !h->def_regular | |
7022 | && h->protected_def | |
7023 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7024 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
7025 | picfixup_size += 12; | |
7026 | continue; | |
7027 | } | |
7028 | ||
5446cbdf AM |
7029 | /* The condition here under which we call find_plt_ent must |
7030 | match that in relocate_section. If we call find_plt_ent here | |
7031 | but not in relocate_section, or vice versa, then the branch | |
7032 | destination used here may be incorrect. */ | |
7033 | plist = NULL; | |
7034 | if (h != NULL) | |
25dbc73a | 7035 | { |
5446cbdf AM |
7036 | /* We know is_branch_reloc (r_type) is true. */ |
7037 | if (h->type == STT_GNU_IFUNC | |
7038 | || r_type == R_PPC_PLTREL24) | |
7039 | plist = &h->plt.plist; | |
25dbc73a | 7040 | } |
5446cbdf AM |
7041 | else if (sym_type == STT_GNU_IFUNC |
7042 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 7043 | { |
5446cbdf AM |
7044 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
7045 | struct plt_entry **local_plt = (struct plt_entry **) | |
7046 | (local_got_offsets + symtab_hdr->sh_info); | |
7047 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 7048 | } |
5446cbdf | 7049 | if (plist != NULL) |
a9585d22 | 7050 | { |
5446cbdf AM |
7051 | bfd_vma addend = 0; |
7052 | struct plt_entry *ent; | |
7053 | ||
0e1862bb | 7054 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
7055 | addend = irel->r_addend; |
7056 | ent = find_plt_ent (plist, got2, addend); | |
7057 | if (ent != NULL) | |
a9585d22 | 7058 | { |
5446cbdf AM |
7059 | if (htab->plt_type == PLT_NEW |
7060 | || h == NULL | |
7061 | || !htab->elf.dynamic_sections_created | |
7062 | || h->dynindx == -1) | |
7063 | { | |
7064 | tsec = htab->glink; | |
7065 | toff = ent->glink_offset; | |
7066 | } | |
7067 | else | |
7068 | { | |
ce558b89 | 7069 | tsec = htab->elf.splt; |
5446cbdf AM |
7070 | toff = ent->plt.offset; |
7071 | } | |
de972ffa AM |
7072 | } |
7073 | } | |
de972ffa | 7074 | |
5446cbdf AM |
7075 | /* If the branch and target are in the same section, you have |
7076 | no hope of adding stubs. We'll error out later should the | |
7077 | branch overflow. */ | |
7078 | if (tsec == isec) | |
7079 | continue; | |
25dbc73a | 7080 | |
5446cbdf AM |
7081 | /* There probably isn't any reason to handle symbols in |
7082 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
7083 | attribute for a code section, and we are only looking at | |
7084 | branches. However, implement it correctly here as a | |
7085 | reference for other target relax_section functions. */ | |
7086 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7087 | { | |
7088 | /* At this stage in linking, no SEC_MERGE symbol has been | |
7089 | adjusted, so all references to such symbols need to be | |
7090 | passed through _bfd_merged_section_offset. (Later, in | |
7091 | relocate_section, all SEC_MERGE symbols *except* for | |
7092 | section symbols have been adjusted.) | |
7093 | ||
7094 | gas may reduce relocations against symbols in SEC_MERGE | |
7095 | sections to a relocation against the section symbol when | |
7096 | the original addend was zero. When the reloc is against | |
7097 | a section symbol we should include the addend in the | |
7098 | offset passed to _bfd_merged_section_offset, since the | |
7099 | location of interest is the original symbol. On the | |
7100 | other hand, an access to "sym+addend" where "sym" is not | |
7101 | a section symbol should not include the addend; Such an | |
7102 | access is presumed to be an offset from "sym"; The | |
7103 | location of interest is just "sym". */ | |
7104 | if (sym_type == STT_SECTION) | |
7105 | toff += irel->r_addend; | |
7106 | ||
7107 | toff | |
7108 | = _bfd_merged_section_offset (abfd, &tsec, | |
7109 | elf_section_data (tsec)->sec_info, | |
7110 | toff); | |
7111 | ||
7112 | if (sym_type != STT_SECTION) | |
7113 | toff += irel->r_addend; | |
7114 | } | |
7115 | /* PLTREL24 addends are special. */ | |
7116 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 7117 | toff += irel->r_addend; |
7619e7c7 | 7118 | |
5446cbdf | 7119 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 7120 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
7121 | && tsec == bfd_und_section_ptr) |
7122 | || tsec->output_section == NULL | |
7123 | || (tsec->owner != NULL | |
7124 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
7125 | continue; | |
7619e7c7 | 7126 | |
5446cbdf | 7127 | roff = irel->r_offset; |
7de713b9 | 7128 | |
5446cbdf AM |
7129 | /* If the branch is in range, no need to do anything. */ |
7130 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 7131 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
7132 | /* A relocatable link may have sections moved during |
7133 | final link, so do not presume they remain in range. */ | |
7134 | || tsec->output_section == isec->output_section)) | |
7135 | { | |
7136 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 7137 | |
5446cbdf AM |
7138 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7139 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7140 | if (symaddr - reladdr + max_branch_offset | |
7141 | < 2 * max_branch_offset) | |
7142 | continue; | |
7143 | } | |
01017ef8 | 7144 | |
5446cbdf | 7145 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 7146 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
7147 | if (f->tsec == tsec && f->toff == toff) |
7148 | break; | |
252b5132 | 7149 | |
5446cbdf AM |
7150 | if (f == NULL) |
7151 | { | |
7152 | size_t size; | |
7153 | unsigned long stub_rtype; | |
25dbc73a | 7154 | |
5446cbdf AM |
7155 | val = trampoff - roff; |
7156 | if (val >= max_branch_offset) | |
7157 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
7158 | one. We'll report an error later. */ | |
7159 | continue; | |
252b5132 | 7160 | |
0e1862bb | 7161 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
7162 | { |
7163 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
7164 | insn_offset = 12; | |
7165 | } | |
7166 | else | |
7167 | { | |
7168 | size = 4 * ARRAY_SIZE (stub_entry); | |
7169 | insn_offset = 0; | |
7170 | } | |
1be5d8d3 AM |
7171 | if (!htab->params->speculate_indirect_jumps) |
7172 | size += 8; | |
5446cbdf | 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 | ||
1be5d8d3 AM |
7454 | static inline bfd_byte * |
7455 | output_bctr (struct ppc_elf_link_hash_table *htab, bfd *obfd, bfd_byte *p) | |
7456 | { | |
7457 | if (!htab->params->speculate_indirect_jumps) | |
7458 | { | |
7459 | bfd_put_32 (obfd, CRSETEQ, p); | |
7460 | p += 4; | |
7461 | bfd_put_32 (obfd, BEQCTRM, p); | |
7462 | p += 4; | |
7463 | bfd_put_32 (obfd, B, p); | |
7464 | p += 4; | |
7465 | } | |
7466 | else | |
7467 | { | |
7468 | bfd_put_32 (obfd, BCTR, p); | |
7469 | p += 4; | |
7470 | } | |
7471 | return p; | |
7472 | } | |
7473 | ||
e054468f | 7474 | static void |
9e390558 AM |
7475 | write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, |
7476 | asection *plt_sec, unsigned char *p, | |
e054468f AM |
7477 | struct bfd_link_info *info) |
7478 | { | |
7479 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7480 | bfd *output_bfd = info->output_bfd; | |
7481 | bfd_vma plt; | |
9e390558 AM |
7482 | unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h); |
7483 | ||
7484 | if (h != NULL | |
7485 | && h == htab->tls_get_addr | |
7486 | && !htab->params->no_tls_get_addr_opt) | |
7487 | { | |
7488 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
7489 | p += 4; | |
7490 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
7491 | p += 4; | |
7492 | bfd_put_32 (output_bfd, MR_0_3, p); | |
7493 | p += 4; | |
7494 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
7495 | p += 4; | |
7496 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
7497 | p += 4; | |
7498 | bfd_put_32 (output_bfd, BEQLR, p); | |
7499 | p += 4; | |
7500 | bfd_put_32 (output_bfd, MR_3_0, p); | |
7501 | p += 4; | |
7502 | bfd_put_32 (output_bfd, NOP, p); | |
7503 | p += 4; | |
7504 | } | |
e054468f AM |
7505 | |
7506 | plt = ((ent->plt.offset & ~1) | |
7507 | + plt_sec->output_section->vma | |
7508 | + plt_sec->output_offset); | |
e054468f | 7509 | |
0e1862bb | 7510 | if (bfd_link_pic (info)) |
e054468f AM |
7511 | { |
7512 | bfd_vma got = 0; | |
7513 | ||
7514 | if (ent->addend >= 32768) | |
7515 | got = (ent->addend | |
7516 | + ent->sec->output_section->vma | |
7517 | + ent->sec->output_offset); | |
7518 | else if (htab->elf.hgot != NULL) | |
7519 | got = SYM_VAL (htab->elf.hgot); | |
7520 | ||
7521 | plt -= got; | |
7522 | ||
7523 | if (plt + 0x8000 < 0x10000) | |
9e390558 | 7524 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); |
e054468f AM |
7525 | else |
7526 | { | |
7527 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7528 | p += 4; | |
7529 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
e054468f AM |
7530 | } |
7531 | } | |
7532 | else | |
7533 | { | |
7534 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7535 | p += 4; | |
7536 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
9e390558 AM |
7537 | } |
7538 | p += 4; | |
7539 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7540 | p += 4; | |
1be5d8d3 | 7541 | p = output_bctr (htab, output_bfd, p); |
9e390558 AM |
7542 | while (p < end) |
7543 | { | |
7544 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); | |
e054468f AM |
7545 | p += 4; |
7546 | } | |
7547 | } | |
7548 | ||
bd6c6e2b AM |
7549 | /* Return true if symbol is defined statically. */ |
7550 | ||
7551 | static bfd_boolean | |
7552 | is_static_defined (struct elf_link_hash_entry *h) | |
7553 | { | |
7554 | return ((h->root.type == bfd_link_hash_defined | |
7555 | || h->root.type == bfd_link_hash_defweak) | |
7556 | && h->root.u.def.section != NULL | |
7557 | && h->root.u.def.section->output_section != NULL); | |
7558 | } | |
7559 | ||
2d0f3896 AM |
7560 | /* If INSN is an opcode that may be used with an @tls operand, return |
7561 | the transformed insn for TLS optimisation, otherwise return 0. If | |
7562 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
7563 | ||
7564 | unsigned int | |
7565 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
7566 | { | |
7567 | unsigned int rtra; | |
7568 | ||
7569 | if ((insn & (0x3f << 26)) != 31 << 26) | |
7570 | return 0; | |
7571 | ||
7572 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
7573 | rtra = insn & ((1 << 26) - (1 << 16)); | |
7574 | else if (((insn >> 16) & 0x1f) == reg) | |
7575 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
7576 | else | |
7577 | return 0; | |
7578 | ||
7579 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
7580 | /* add -> addi. */ | |
7581 | insn = 14 << 26; | |
7582 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
7583 | && ((insn & (0x1f << 6)) < 14 << 6 | |
7584 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
7585 | && (insn & (0x1f << 6)) < 24 << 6))) | |
7586 | /* load and store indexed -> dform. */ | |
7587 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
7588 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
7589 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7590 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
7591 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
7592 | /* lwax -> lwa. */ | |
7593 | insn = (58 << 26) | 2; | |
7594 | else | |
7595 | return 0; | |
7596 | insn |= rtra; | |
7597 | return insn; | |
7598 | } | |
7599 | ||
766bc656 AM |
7600 | /* If INSN is an opcode that may be used with an @tprel operand, return |
7601 | the transformed insn for an undefined weak symbol, ie. with the | |
7602 | thread pointer REG operand removed. Otherwise return 0. */ | |
7603 | ||
7604 | unsigned int | |
7605 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
7606 | { | |
7607 | if ((insn & (0x1f << 16)) == reg << 16 | |
7608 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7609 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
7610 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7611 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7612 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7613 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7614 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7615 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7616 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7617 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7618 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7619 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7620 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7621 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7622 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7623 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7624 | && (insn & 3) != 1) | |
7625 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7626 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
7627 | { | |
7628 | insn &= ~(0x1f << 16); | |
7629 | } | |
7630 | else if ((insn & (0x1f << 21)) == reg << 21 | |
7631 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
7632 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
7633 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
7634 | { | |
7635 | insn &= ~(0x1f << 21); | |
7636 | insn |= (insn & (0x1f << 16)) << 5; | |
7637 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
7638 | insn -= 2 >> 26; /* convert to ori,oris */ | |
7639 | } | |
7640 | else | |
7641 | insn = 0; | |
7642 | return insn; | |
7643 | } | |
7644 | ||
1fe532cf AM |
7645 | static bfd_boolean |
7646 | is_insn_ds_form (unsigned int insn) | |
7647 | { | |
7648 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
7649 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
7650 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
7651 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
7652 | } | |
7653 | ||
7654 | static bfd_boolean | |
7655 | is_insn_dq_form (unsigned int insn) | |
7656 | { | |
a680de9a PB |
7657 | return ((insn & (0x3f << 26)) == 56u << 26 /* lq */ |
7658 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
7659 | && (insn & 3) == 1)); | |
1fe532cf AM |
7660 | } |
7661 | ||
252b5132 RH |
7662 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7663 | to handle the relocations for a section. | |
7664 | ||
7665 | The relocs are always passed as Rela structures; if the section | |
7666 | actually uses Rel structures, the r_addend field will always be | |
7667 | zero. | |
7668 | ||
7669 | This function is responsible for adjust the section contents as | |
7670 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7671 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
7672 | necessary. |
7673 | ||
7674 | This function does not have to worry about setting the reloc | |
7675 | address or the reloc symbol index. | |
7676 | ||
7677 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7678 | ||
7679 | LOCAL_SECTIONS is an array giving the section in the input file | |
7680 | corresponding to the st_shndx field of each local symbol. | |
7681 | ||
7682 | The global hash table entry for the global symbols can be found | |
7683 | via elf_sym_hashes (input_bfd). | |
7684 | ||
1049f94e | 7685 | When generating relocatable output, this function must handle |
252b5132 RH |
7686 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7687 | going to be the section symbol corresponding to the output | |
7688 | section, which means that the addend must be adjusted | |
7689 | accordingly. */ | |
7690 | ||
b34976b6 | 7691 | static bfd_boolean |
55fd94b0 AM |
7692 | ppc_elf_relocate_section (bfd *output_bfd, |
7693 | struct bfd_link_info *info, | |
7694 | bfd *input_bfd, | |
7695 | asection *input_section, | |
7696 | bfd_byte *contents, | |
7697 | Elf_Internal_Rela *relocs, | |
7698 | Elf_Internal_Sym *local_syms, | |
7699 | asection **local_sections) | |
252b5132 | 7700 | { |
7619e7c7 AM |
7701 | Elf_Internal_Shdr *symtab_hdr; |
7702 | struct elf_link_hash_entry **sym_hashes; | |
7703 | struct ppc_elf_link_hash_table *htab; | |
7704 | Elf_Internal_Rela *rel; | |
c316a17c | 7705 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
7706 | Elf_Internal_Rela *relend; |
7707 | Elf_Internal_Rela outrel; | |
f95f8542 | 7708 | asection *got2; |
252b5132 | 7709 | bfd_vma *local_got_offsets; |
b34976b6 | 7710 | bfd_boolean ret = TRUE; |
95f0d0d2 | 7711 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
3348747a | 7712 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
7713 | unsigned int picfixup_size = 0; |
7714 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 7715 | |
252b5132 | 7716 | #ifdef DEBUG |
d003868e AM |
7717 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
7718 | "%ld relocations%s", | |
7719 | input_bfd, input_section, | |
7720 | (long) input_section->reloc_count, | |
0e1862bb | 7721 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
7722 | #endif |
7723 | ||
a6aa5195 AM |
7724 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7725 | ||
e47cd125 | 7726 | /* Initialize howto table if not already done. */ |
8da6118f | 7727 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7728 | ppc_elf_howto_init (); |
7729 | ||
7619e7c7 | 7730 | htab = ppc_elf_hash_table (info); |
252b5132 | 7731 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7732 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7733 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7734 | /* We have to handle relocations in vxworks .tls_vars sections |
7735 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 7736 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
7737 | && !strcmp (input_section->output_section->name, |
7738 | ".tls_vars")); | |
d3e454b9 AM |
7739 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
7740 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 7741 | rel = wrel = relocs; |
7619e7c7 | 7742 | relend = relocs + input_section->reloc_count; |
c316a17c | 7743 | for (; rel < relend; wrel++, rel++) |
252b5132 | 7744 | { |
7619e7c7 AM |
7745 | enum elf_ppc_reloc_type r_type; |
7746 | bfd_vma addend; | |
7747 | bfd_reloc_status_type r; | |
7748 | Elf_Internal_Sym *sym; | |
7749 | asection *sec; | |
7750 | struct elf_link_hash_entry *h; | |
7751 | const char *sym_name; | |
252b5132 RH |
7752 | reloc_howto_type *howto; |
7753 | unsigned long r_symndx; | |
7754 | bfd_vma relocation; | |
91d6fa6a | 7755 | bfd_vma branch_bit, from; |
7619e7c7 AM |
7756 | bfd_boolean unresolved_reloc; |
7757 | bfd_boolean warned; | |
7758 | unsigned int tls_type, tls_mask, tls_gd; | |
e054468f | 7759 | struct plt_entry **ifunc; |
86c95733 | 7760 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7761 | |
c316a17c | 7762 | again: |
55fd94b0 AM |
7763 | r_type = ELF32_R_TYPE (rel->r_info); |
7764 | sym = NULL; | |
7765 | sec = NULL; | |
7766 | h = NULL; | |
7619e7c7 AM |
7767 | unresolved_reloc = FALSE; |
7768 | warned = FALSE; | |
252b5132 | 7769 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7770 | |
252b5132 RH |
7771 | if (r_symndx < symtab_hdr->sh_info) |
7772 | { | |
7773 | sym = local_syms + r_symndx; | |
7774 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7775 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7776 | |
8517fae7 | 7777 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7778 | } |
7779 | else | |
7780 | { | |
62d887d4 L |
7781 | bfd_boolean ignored; |
7782 | ||
b2a8e766 AM |
7783 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7784 | r_symndx, symtab_hdr, sym_hashes, | |
7785 | h, sec, relocation, | |
62d887d4 | 7786 | unresolved_reloc, warned, ignored); |
9abc968f | 7787 | |
252b5132 | 7788 | sym_name = h->root.root.string; |
7619e7c7 AM |
7789 | } |
7790 | ||
dbaa2011 | 7791 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7792 | { |
7793 | /* For relocs against symbols from removed linkonce sections, | |
7794 | or sections discarded by a linker script, we just want the | |
7795 | section contents zeroed. Avoid any special processing. */ | |
7796 | howto = NULL; | |
7797 | if (r_type < R_PPC_max) | |
7798 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
7799 | |
7800 | _bfd_clear_contents (howto, input_bfd, input_section, | |
7801 | contents + rel->r_offset); | |
7802 | wrel->r_offset = rel->r_offset; | |
7803 | wrel->r_info = 0; | |
7804 | wrel->r_addend = 0; | |
7805 | ||
7806 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 7807 | symbols defined in discarded sections. Not done for |
c316a17c AM |
7808 | non-debug to preserve relocs in .eh_frame which the |
7809 | eh_frame editing code expects to be present. */ | |
7810 | if (bfd_link_relocatable (info) | |
7811 | && (input_section->flags & SEC_DEBUGGING)) | |
7812 | wrel--; | |
7813 | ||
7814 | continue; | |
ab96bf03 AM |
7815 | } |
7816 | ||
0e1862bb | 7817 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
7818 | { |
7819 | if (got2 != NULL | |
7820 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7821 | && rel->r_addend != 0) |
ab96bf03 AM |
7822 | { |
7823 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7824 | addend specifies the GOT pointer offset within .got2. */ | |
7825 | rel->r_addend += got2->output_offset; | |
7826 | } | |
53291d1f AM |
7827 | if (r_type != R_PPC_RELAX_PLT |
7828 | && r_type != R_PPC_RELAX_PLTREL24 | |
7829 | && r_type != R_PPC_RELAX) | |
c316a17c | 7830 | goto copy_reloc; |
ab96bf03 AM |
7831 | } |
7832 | ||
7619e7c7 AM |
7833 | /* TLS optimizations. Replace instruction sequences and relocs |
7834 | based on information we collected in tls_optimize. We edit | |
7835 | RELOCS so that --emit-relocs will output something sensible | |
7836 | for the final instruction stream. */ | |
7837 | tls_mask = 0; | |
7838 | tls_gd = 0; | |
727fc41e AM |
7839 | if (h != NULL) |
7840 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7841 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7842 | { |
e054468f | 7843 | struct plt_entry **local_plt; |
727fc41e | 7844 | char *lgot_masks; |
e054468f AM |
7845 | local_plt |
7846 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7847 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7848 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7849 | } |
7850 | ||
7851 | /* Ensure reloc mapping code below stays sane. */ | |
7852 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7853 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7854 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7855 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7856 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7857 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7858 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7859 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7860 | abort (); | |
7861 | switch (r_type) | |
7862 | { | |
7863 | default: | |
7864 | break; | |
7865 | ||
7866 | case R_PPC_GOT_TPREL16: | |
7867 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7868 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7869 | && (tls_mask & TLS_TPREL) == 0) |
7870 | { | |
7871 | bfd_vma insn; | |
91d6fa6a | 7872 | |
95f0d0d2 | 7873 | insn = bfd_get_32 (input_bfd, |
c316a17c | 7874 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7875 | insn &= 31 << 21; |
7876 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
95f0d0d2 | 7877 | bfd_put_32 (input_bfd, insn, |
c316a17c | 7878 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7879 | r_type = R_PPC_TPREL16_HA; |
7880 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7881 | } | |
7882 | break; | |
7883 | ||
7884 | case R_PPC_TLS: | |
e054468f | 7885 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7886 | && (tls_mask & TLS_TPREL) == 0) |
7887 | { | |
2d0f3896 AM |
7888 | bfd_vma insn; |
7889 | ||
95f0d0d2 | 7890 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7891 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7892 | if (insn == 0) | |
7619e7c7 | 7893 | abort (); |
95f0d0d2 | 7894 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
7619e7c7 AM |
7895 | r_type = R_PPC_TPREL16_LO; |
7896 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7897 | |
7619e7c7 | 7898 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7899 | PPC_TPREL16_LO which is at low-order half-word. */ |
7900 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7901 | } |
7902 | break; | |
7903 | ||
7904 | case R_PPC_GOT_TLSGD16_HI: | |
7905 | case R_PPC_GOT_TLSGD16_HA: | |
7906 | tls_gd = TLS_TPRELGD; | |
e054468f | 7907 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7908 | goto tls_gdld_hi; |
7909 | break; | |
7910 | ||
7911 | case R_PPC_GOT_TLSLD16_HI: | |
7912 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7913 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7914 | { |
7915 | tls_gdld_hi: | |
7916 | if ((tls_mask & tls_gd) != 0) | |
7917 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7918 | + R_PPC_GOT_TPREL16); | |
7919 | else | |
7920 | { | |
4fe5ca5b | 7921 | rel->r_offset -= d_offset; |
95f0d0d2 | 7922 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7923 | r_type = R_PPC_NONE; |
7924 | } | |
7925 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7926 | } | |
7927 | break; | |
7928 | ||
7929 | case R_PPC_GOT_TLSGD16: | |
7930 | case R_PPC_GOT_TLSGD16_LO: | |
7931 | tls_gd = TLS_TPRELGD; | |
e054468f | 7932 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7933 | goto tls_ldgd_opt; |
7619e7c7 AM |
7934 | break; |
7935 | ||
7936 | case R_PPC_GOT_TLSLD16: | |
7937 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7938 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7939 | { |
3a71aa26 | 7940 | unsigned int insn1, insn2; |
b7fcf6f6 | 7941 | bfd_vma offset; |
7619e7c7 | 7942 | |
b7fcf6f6 | 7943 | tls_ldgd_opt: |
727fc41e AM |
7944 | offset = (bfd_vma) -1; |
7945 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7946 | __tls_get_addr calls, we must trust that the call | |
7947 | stays with its arg setup insns, ie. that the next | |
7948 | reloc is the __tls_get_addr call associated with | |
7949 | the current reloc. Edit both insns. */ | |
7950 | if (input_section->has_tls_get_addr_call | |
7951 | && rel + 1 < relend | |
7952 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7953 | htab->tls_get_addr)) | |
7954 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7955 | /* We read the low GOT_TLS insn because we need to keep |
7956 | the destination reg. It may be something other than | |
7957 | the usual r3, and moved to r3 before the call by | |
7958 | intervening code. */ | |
95f0d0d2 | 7959 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 7960 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7961 | if ((tls_mask & tls_gd) != 0) |
7962 | { | |
7963 | /* IE */ | |
b86ac8e3 | 7964 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 7965 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
7966 | if (offset != (bfd_vma) -1) |
7967 | { | |
f58d5a2d | 7968 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e | 7969 | insn2 = 0x7c631214; /* add 3,3,2 */ |
95f0d0d2 | 7970 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7971 | } |
b7fcf6f6 AM |
7972 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7973 | + R_PPC_GOT_TPREL16); | |
7974 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7975 | } | |
7976 | else | |
7977 | { | |
7978 | /* LE */ | |
b86ac8e3 AM |
7979 | insn1 &= 0x1f << 21; |
7980 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7981 | if (tls_gd == 0) |
7982 | { | |
b7fcf6f6 | 7983 | /* Was an LD reloc. */ |
1d483afe AM |
7984 | for (r_symndx = 0; |
7985 | r_symndx < symtab_hdr->sh_info; | |
7986 | r_symndx++) | |
7987 | if (local_sections[r_symndx] == sec) | |
7988 | break; | |
7989 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7990 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7991 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7992 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7993 | rel->r_addend -= (local_syms[r_symndx].st_value |
7994 | + sec->output_offset | |
7995 | + sec->output_section->vma); | |
7619e7c7 | 7996 | } |
b7fcf6f6 AM |
7997 | r_type = R_PPC_TPREL16_HA; |
7998 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7999 | if (offset != (bfd_vma) -1) |
8000 | { | |
8001 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8002 | rel[1].r_offset = offset + d_offset; | |
8003 | rel[1].r_addend = rel->r_addend; | |
8004 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 8005 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 8006 | } |
b7fcf6f6 | 8007 | } |
95f0d0d2 | 8008 | bfd_put_32 (input_bfd, insn1, |
b7fcf6f6 | 8009 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
8010 | if (tls_gd == 0) |
8011 | { | |
8012 | /* We changed the symbol on an LD reloc. Start over | |
8013 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 8014 | goto again; |
7619e7c7 | 8015 | } |
252b5132 | 8016 | } |
7619e7c7 | 8017 | break; |
727fc41e AM |
8018 | |
8019 | case R_PPC_TLSGD: | |
e054468f | 8020 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
727fc41e AM |
8021 | { |
8022 | unsigned int insn2; | |
8023 | bfd_vma offset = rel->r_offset; | |
8024 | ||
8025 | if ((tls_mask & TLS_TPRELGD) != 0) | |
8026 | { | |
8027 | /* IE */ | |
8028 | r_type = R_PPC_NONE; | |
8029 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
8030 | } | |
8031 | else | |
8032 | { | |
8033 | /* LE */ | |
8034 | r_type = R_PPC_TPREL16_LO; | |
8035 | rel->r_offset += d_offset; | |
8036 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8037 | } | |
8038 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
95f0d0d2 | 8039 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
8040 | /* Zap the reloc on the _tls_get_addr call too. */ |
8041 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 8042 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
8043 | } |
8044 | break; | |
8045 | ||
8046 | case R_PPC_TLSLD: | |
e054468f | 8047 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
727fc41e AM |
8048 | { |
8049 | unsigned int insn2; | |
8050 | ||
8051 | for (r_symndx = 0; | |
8052 | r_symndx < symtab_hdr->sh_info; | |
8053 | r_symndx++) | |
8054 | if (local_sections[r_symndx] == sec) | |
8055 | break; | |
8056 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 8057 | r_symndx = STN_UNDEF; |
727fc41e | 8058 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 8059 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
8060 | rel->r_addend -= (local_syms[r_symndx].st_value |
8061 | + sec->output_offset | |
8062 | + sec->output_section->vma); | |
8063 | ||
8064 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8065 | rel->r_offset += d_offset; | |
8066 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 8067 | bfd_put_32 (input_bfd, insn2, |
727fc41e AM |
8068 | contents + rel->r_offset - d_offset); |
8069 | /* Zap the reloc on the _tls_get_addr call too. */ | |
8070 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 8071 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 8072 | goto again; |
727fc41e AM |
8073 | } |
8074 | break; | |
7619e7c7 AM |
8075 | } |
8076 | ||
8077 | /* Handle other relocations that tweak non-addend part of insn. */ | |
8078 | branch_bit = 0; | |
8079 | switch (r_type) | |
8080 | { | |
8081 | default: | |
8082 | break; | |
8083 | ||
8084 | /* Branch taken prediction relocations. */ | |
8085 | case R_PPC_ADDR14_BRTAKEN: | |
8086 | case R_PPC_REL14_BRTAKEN: | |
8087 | branch_bit = BRANCH_PREDICT_BIT; | |
1a0670f3 | 8088 | /* Fall through. */ |
7619e7c7 | 8089 | |
4cc11e76 | 8090 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
8091 | case R_PPC_ADDR14_BRNTAKEN: |
8092 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a NC |
8093 | { |
8094 | bfd_vma insn; | |
7619e7c7 | 8095 | |
95f0d0d2 | 8096 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
91d6fa6a NC |
8097 | insn &= ~BRANCH_PREDICT_BIT; |
8098 | insn |= branch_bit; | |
7619e7c7 | 8099 | |
91d6fa6a NC |
8100 | from = (rel->r_offset |
8101 | + input_section->output_offset | |
8102 | + input_section->output_section->vma); | |
7619e7c7 | 8103 | |
91d6fa6a NC |
8104 | /* Invert 'y' bit if not the default. */ |
8105 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8106 | insn ^= BRANCH_PREDICT_BIT; | |
8107 | ||
95f0d0d2 | 8108 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
91d6fa6a NC |
8109 | break; |
8110 | } | |
252b5132 RH |
8111 | } |
8112 | ||
d3e454b9 AM |
8113 | if (ELIMINATE_COPY_RELOCS |
8114 | && h != NULL | |
8115 | && !h->def_regular | |
8116 | && h->protected_def | |
8117 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
8118 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
8119 | && htab->params->pic_fixup > 0) | |
8120 | { | |
8121 | /* Convert lis;addi or lis;load/store accessing a protected | |
8122 | variable defined in a shared library to PIC. */ | |
8123 | unsigned int insn; | |
8124 | ||
8125 | if (r_type == R_PPC_ADDR16_HA) | |
8126 | { | |
95f0d0d2 | 8127 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8128 | contents + rel->r_offset - d_offset); |
8129 | if ((insn & (0x3f << 26)) == (15u << 26) | |
8130 | && (insn & (0x1f << 16)) == 0 /* lis */) | |
8131 | { | |
8132 | bfd_byte *p; | |
8133 | bfd_vma off; | |
8134 | bfd_vma got_addr; | |
8135 | ||
8136 | p = (contents + input_section->size | |
8137 | - relax_info->workaround_size | |
8138 | - relax_info->picfixup_size | |
8139 | + picfixup_size); | |
8140 | off = (p - contents) - (rel->r_offset - d_offset); | |
8141 | if (off > 0x1fffffc || (off & 3) != 0) | |
8142 | info->callbacks->einfo | |
174d0a74 | 8143 | (_("%H: fixup branch overflow\n"), |
d3e454b9 AM |
8144 | input_bfd, input_section, rel->r_offset); |
8145 | ||
95f0d0d2 | 8146 | bfd_put_32 (input_bfd, B | off, |
d3e454b9 | 8147 | contents + rel->r_offset - d_offset); |
ce558b89 AM |
8148 | got_addr = (htab->elf.sgot->output_section->vma |
8149 | + htab->elf.sgot->output_offset | |
d3e454b9 | 8150 | + (h->got.offset & ~1)); |
c316a17c AM |
8151 | wrel->r_offset = (p - contents) + d_offset; |
8152 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
8153 | wrel->r_addend = got_addr; | |
d3e454b9 | 8154 | insn &= ~0xffff; |
4aef7643 | 8155 | insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff; |
95f0d0d2 | 8156 | bfd_put_32 (input_bfd, insn, p); |
d3e454b9 AM |
8157 | |
8158 | /* Convert lis to lwz, loading address from GOT. */ | |
8159 | insn &= ~0xffff; | |
8160 | insn ^= (32u ^ 15u) << 26; | |
8161 | insn |= (insn & (0x1f << 21)) >> 5; | |
8162 | insn |= got_addr & 0xffff; | |
95f0d0d2 | 8163 | bfd_put_32 (input_bfd, insn, p + 4); |
d3e454b9 | 8164 | |
95f0d0d2 | 8165 | bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); |
d3e454b9 AM |
8166 | picfixup_size += 12; |
8167 | ||
8168 | /* Use one of the spare relocs, so --emit-relocs | |
8169 | output is reasonable. */ | |
8170 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
8171 | wrel++, rel++; |
8172 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 8173 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 8174 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
8175 | |
8176 | /* Continue on as if we had a got reloc, to output | |
8177 | dynamic reloc. */ | |
8178 | r_type = R_PPC_GOT16_LO; | |
8179 | } | |
8180 | else | |
2c4d9cbe | 8181 | _bfd_error_handler |
695344c0 | 8182 | /* xgettext:c-format */ |
e3fbc3da | 8183 | (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"), |
d3e454b9 AM |
8184 | input_bfd, input_section, rel->r_offset, |
8185 | "R_PPC_ADDR16_HA", insn); | |
8186 | } | |
8187 | else if (r_type == R_PPC_ADDR16_LO) | |
8188 | { | |
95f0d0d2 | 8189 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8190 | contents + rel->r_offset - d_offset); |
8191 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8192 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8193 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8194 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8195 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8196 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8197 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8198 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8199 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8200 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8201 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8202 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8203 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8204 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8205 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8206 | && (insn & 3) != 1) | |
8207 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8208 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
8209 | { | |
8210 | /* Arrange to apply the reloc addend, if any. */ | |
8211 | relocation = 0; | |
8212 | unresolved_reloc = FALSE; | |
8213 | rel->r_info = ELF32_R_INFO (0, r_type); | |
8214 | } | |
8215 | else | |
2c4d9cbe | 8216 | _bfd_error_handler |
695344c0 | 8217 | /* xgettext:c-format */ |
e3fbc3da | 8218 | (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"), |
d3e454b9 AM |
8219 | input_bfd, input_section, rel->r_offset, |
8220 | "R_PPC_ADDR16_LO", insn); | |
8221 | } | |
8222 | } | |
8223 | ||
e054468f | 8224 | ifunc = NULL; |
25f23106 | 8225 | if (!htab->is_vxworks) |
e054468f | 8226 | { |
de972ffa AM |
8227 | struct plt_entry *ent; |
8228 | ||
e054468f AM |
8229 | if (h != NULL) |
8230 | { | |
8231 | if (h->type == STT_GNU_IFUNC) | |
8232 | ifunc = &h->plt.plist; | |
8233 | } | |
de972ffa AM |
8234 | else if (local_got_offsets != NULL |
8235 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 8236 | { |
de972ffa | 8237 | struct plt_entry **local_plt; |
e054468f | 8238 | |
de972ffa AM |
8239 | local_plt = (struct plt_entry **) (local_got_offsets |
8240 | + symtab_hdr->sh_info); | |
8241 | ifunc = local_plt + r_symndx; | |
e054468f | 8242 | } |
e054468f | 8243 | |
de972ffa AM |
8244 | ent = NULL; |
8245 | if (ifunc != NULL | |
0e1862bb | 8246 | && (!bfd_link_pic (info) |
de972ffa AM |
8247 | || is_branch_reloc (r_type))) |
8248 | { | |
8249 | addend = 0; | |
0e1862bb | 8250 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info)) |
de972ffa AM |
8251 | addend = rel->r_addend; |
8252 | ent = find_plt_ent (ifunc, got2, addend); | |
8253 | } | |
8254 | if (ent != NULL) | |
8255 | { | |
888a7fc3 AM |
8256 | if (bfd_link_pic (info) |
8257 | && ent->sec != got2 | |
8258 | && htab->plt_type != PLT_NEW | |
8259 | && (!htab->elf.dynamic_sections_created | |
8260 | || h == NULL | |
8261 | || h->dynindx == -1)) | |
8262 | { | |
8263 | /* Uh oh, we are going to create a pic glink stub | |
8264 | for an ifunc (here for h == NULL and later in | |
8265 | finish_dynamic_symbol for h != NULL), and | |
8266 | apparently are using code compiled with | |
8267 | -mbss-plt. The difficulty is that -mbss-plt code | |
8268 | gives no indication via a magic PLTREL24 addend | |
8269 | whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or | |
8270 | is pointing into a .got2 section (and how far | |
8271 | into .got2). */ | |
8272 | info->callbacks->einfo | |
695344c0 | 8273 | /* xgettext:c-format */ |
174d0a74 | 8274 | (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"), |
888a7fc3 AM |
8275 | input_bfd, input_section, rel->r_offset, sym_name); |
8276 | } | |
e054468f AM |
8277 | if (h == NULL && (ent->plt.offset & 1) == 0) |
8278 | { | |
8279 | Elf_Internal_Rela rela; | |
8280 | bfd_byte *loc; | |
8281 | ||
ce558b89 AM |
8282 | rela.r_offset = (htab->elf.iplt->output_section->vma |
8283 | + htab->elf.iplt->output_offset | |
e054468f AM |
8284 | + ent->plt.offset); |
8285 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8286 | rela.r_addend = relocation; | |
ce558b89 AM |
8287 | loc = htab->elf.irelplt->contents; |
8288 | loc += (htab->elf.irelplt->reloc_count++ | |
25f23106 | 8289 | * sizeof (Elf32_External_Rela)); |
e054468f | 8290 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
82e66161 | 8291 | htab->local_ifunc_resolver = 1; |
e054468f AM |
8292 | |
8293 | ent->plt.offset |= 1; | |
8294 | } | |
8295 | if (h == NULL && (ent->glink_offset & 1) == 0) | |
8296 | { | |
a7f2871e AM |
8297 | unsigned char *p = ((unsigned char *) htab->glink->contents |
8298 | + ent->glink_offset); | |
9e390558 AM |
8299 | |
8300 | write_glink_stub (NULL, ent, htab->elf.iplt, p, info); | |
e054468f AM |
8301 | ent->glink_offset |= 1; |
8302 | } | |
8303 | ||
8304 | unresolved_reloc = FALSE; | |
8305 | if (htab->plt_type == PLT_NEW | |
8306 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
8307 | || h == NULL |
8308 | || h->dynindx == -1) | |
e054468f AM |
8309 | relocation = (htab->glink->output_section->vma |
8310 | + htab->glink->output_offset | |
8311 | + (ent->glink_offset & ~1)); | |
8312 | else | |
ce558b89 AM |
8313 | relocation = (htab->elf.splt->output_section->vma |
8314 | + htab->elf.splt->output_offset | |
e054468f AM |
8315 | + ent->plt.offset); |
8316 | } | |
8317 | } | |
8318 | ||
7619e7c7 | 8319 | addend = rel->r_addend; |
7619e7c7 | 8320 | howto = NULL; |
55fd94b0 AM |
8321 | if (r_type < R_PPC_max) |
8322 | howto = ppc_elf_howto_table[r_type]; | |
9a23f96e AM |
8323 | |
8324 | switch (r_type) | |
8325 | { | |
8326 | default: | |
8327 | break; | |
8328 | ||
8329 | case R_PPC_TPREL16_HA: | |
8330 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8331 | { | |
8332 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8333 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8334 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8335 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
8336 | /* xgettext:c-format */ | |
8337 | info->callbacks->minfo | |
8338 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8339 | input_bfd, input_section, rel->r_offset, howto->name, insn); | |
8340 | else | |
8341 | bfd_put_32 (input_bfd, NOP, p); | |
8342 | } | |
8343 | break; | |
8344 | ||
8345 | case R_PPC_TPREL16_LO: | |
8346 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8347 | { | |
8348 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8349 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8350 | insn &= ~(0x1f << 16); | |
8351 | insn |= 2 << 16; | |
8352 | bfd_put_32 (input_bfd, insn, p); | |
8353 | } | |
8354 | break; | |
8355 | } | |
8356 | ||
8357 | tls_type = 0; | |
7619e7c7 | 8358 | switch (r_type) |
252b5132 RH |
8359 | { |
8360 | default: | |
25f53a85 | 8361 | info->callbacks->einfo |
695344c0 | 8362 | /* xgettext:c-format */ |
8de848d8 | 8363 | (_("%P: %B: unknown relocation type %d for symbol %s\n"), |
d003868e | 8364 | input_bfd, (int) r_type, sym_name); |
252b5132 RH |
8365 | |
8366 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8367 | ret = FALSE; |
c316a17c | 8368 | goto copy_reloc; |
252b5132 | 8369 | |
7619e7c7 AM |
8370 | case R_PPC_NONE: |
8371 | case R_PPC_TLS: | |
727fc41e AM |
8372 | case R_PPC_TLSGD: |
8373 | case R_PPC_TLSLD: | |
7619e7c7 AM |
8374 | case R_PPC_EMB_MRKREF: |
8375 | case R_PPC_GNU_VTINHERIT: | |
8376 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 8377 | goto copy_reloc; |
7595d193 | 8378 | |
7619e7c7 AM |
8379 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
8380 | address in the GOT as relocation value instead of the | |
8381 | symbol's value itself. Also, create a GOT entry for the | |
8382 | symbol and put the symbol value there. */ | |
8383 | case R_PPC_GOT_TLSGD16: | |
8384 | case R_PPC_GOT_TLSGD16_LO: | |
8385 | case R_PPC_GOT_TLSGD16_HI: | |
8386 | case R_PPC_GOT_TLSGD16_HA: | |
8387 | tls_type = TLS_TLS | TLS_GD; | |
8388 | goto dogot; | |
8389 | ||
8390 | case R_PPC_GOT_TLSLD16: | |
8391 | case R_PPC_GOT_TLSLD16_LO: | |
8392 | case R_PPC_GOT_TLSLD16_HI: | |
8393 | case R_PPC_GOT_TLSLD16_HA: | |
8394 | tls_type = TLS_TLS | TLS_LD; | |
8395 | goto dogot; | |
8396 | ||
8397 | case R_PPC_GOT_TPREL16: | |
8398 | case R_PPC_GOT_TPREL16_LO: | |
8399 | case R_PPC_GOT_TPREL16_HI: | |
8400 | case R_PPC_GOT_TPREL16_HA: | |
8401 | tls_type = TLS_TLS | TLS_TPREL; | |
8402 | goto dogot; | |
8403 | ||
8404 | case R_PPC_GOT_DTPREL16: | |
8405 | case R_PPC_GOT_DTPREL16_LO: | |
8406 | case R_PPC_GOT_DTPREL16_HI: | |
8407 | case R_PPC_GOT_DTPREL16_HA: | |
8408 | tls_type = TLS_TLS | TLS_DTPREL; | |
8409 | goto dogot; | |
8410 | ||
8411 | case R_PPC_GOT16: | |
8412 | case R_PPC_GOT16_LO: | |
8413 | case R_PPC_GOT16_HI: | |
8414 | case R_PPC_GOT16_HA: | |
727fc41e | 8415 | tls_mask = 0; |
7619e7c7 AM |
8416 | dogot: |
8417 | { | |
8418 | /* Relocation is to the entry for this symbol in the global | |
8419 | offset table. */ | |
8420 | bfd_vma off; | |
8421 | bfd_vma *offp; | |
8422 | unsigned long indx; | |
8423 | ||
ce558b89 | 8424 | if (htab->elf.sgot == NULL) |
7619e7c7 AM |
8425 | abort (); |
8426 | ||
8427 | indx = 0; | |
8428 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 8429 | && (h == NULL |
f5385ebf | 8430 | || !h->def_dynamic)) |
7619e7c7 AM |
8431 | offp = &htab->tlsld_got.offset; |
8432 | else if (h != NULL) | |
8433 | { | |
f0158f44 AM |
8434 | if (!htab->elf.dynamic_sections_created |
8435 | || h->dynindx == -1 | |
8436 | || SYMBOL_REFERENCES_LOCAL (info, h) | |
21d68fcd | 8437 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7619e7c7 AM |
8438 | /* This is actually a static link, or it is a |
8439 | -Bsymbolic link and the symbol is defined | |
8440 | locally, or the symbol was forced to be local | |
8441 | because of a version file. */ | |
8442 | ; | |
8443 | else | |
8444 | { | |
8445 | indx = h->dynindx; | |
8446 | unresolved_reloc = FALSE; | |
8447 | } | |
8448 | offp = &h->got.offset; | |
8449 | } | |
8450 | else | |
8451 | { | |
8452 | if (local_got_offsets == NULL) | |
8453 | abort (); | |
8454 | offp = &local_got_offsets[r_symndx]; | |
8455 | } | |
8456 | ||
8457 | /* The offset must always be a multiple of 4. We use the | |
8458 | least significant bit to record whether we have already | |
8459 | processed this entry. */ | |
8460 | off = *offp; | |
8461 | if ((off & 1) != 0) | |
8462 | off &= ~1; | |
8463 | else | |
8464 | { | |
70bccea4 AM |
8465 | unsigned int tls_m = (tls_mask |
8466 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
8467 | | TLS_TPREL | TLS_TPRELGD)); | |
8468 | ||
8469 | if (offp == &htab->tlsld_got.offset) | |
8470 | tls_m = TLS_LD; | |
8471 | else if (h == NULL | |
f5385ebf | 8472 | || !h->def_dynamic) |
70bccea4 AM |
8473 | tls_m &= ~TLS_LD; |
8474 | ||
8475 | /* We might have multiple got entries for this sym. | |
8476 | Initialize them all. */ | |
8477 | do | |
7619e7c7 | 8478 | { |
70bccea4 AM |
8479 | int tls_ty = 0; |
8480 | ||
8481 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 8482 | { |
70bccea4 AM |
8483 | tls_ty = TLS_TLS | TLS_LD; |
8484 | tls_m &= ~TLS_LD; | |
8485 | } | |
8486 | else if ((tls_m & TLS_GD) != 0) | |
8487 | { | |
8488 | tls_ty = TLS_TLS | TLS_GD; | |
8489 | tls_m &= ~TLS_GD; | |
8490 | } | |
8491 | else if ((tls_m & TLS_DTPREL) != 0) | |
8492 | { | |
8493 | tls_ty = TLS_TLS | TLS_DTPREL; | |
8494 | tls_m &= ~TLS_DTPREL; | |
8495 | } | |
8496 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
8497 | { | |
8498 | tls_ty = TLS_TLS | TLS_TPREL; | |
8499 | tls_m = 0; | |
7619e7c7 | 8500 | } |
7619e7c7 | 8501 | |
70bccea4 | 8502 | /* Generate relocs for the dynamic linker. */ |
f0158f44 AM |
8503 | if (indx != 0 |
8504 | || (bfd_link_pic (info) | |
8505 | && (h == NULL | |
21d68fcd | 8506 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
f15d0b54 AM |
8507 | || offp == &htab->tlsld_got.offset) |
8508 | && !(tls_ty == (TLS_TLS | TLS_TPREL) | |
8509 | && bfd_link_executable (info) | |
8510 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
7619e7c7 | 8511 | { |
ce558b89 | 8512 | asection *rsec = htab->elf.srelgot; |
91d6fa6a | 8513 | bfd_byte * loc; |
91e21fb7 | 8514 | |
0bed072f | 8515 | if (ifunc != NULL) |
82e66161 AM |
8516 | { |
8517 | rsec = htab->elf.irelplt; | |
8518 | if (indx == 0) | |
8519 | htab->local_ifunc_resolver = 1; | |
8520 | else if (is_static_defined (h)) | |
8521 | htab->maybe_local_ifunc_resolver = 1; | |
8522 | } | |
ce558b89 AM |
8523 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
8524 | + htab->elf.sgot->output_offset | |
70bccea4 | 8525 | + off); |
e515b051 | 8526 | outrel.r_addend = 0; |
70bccea4 AM |
8527 | if (tls_ty & (TLS_LD | TLS_GD)) |
8528 | { | |
8529 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
8530 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8531 | { | |
25f23106 AM |
8532 | loc = rsec->contents; |
8533 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8534 | * sizeof (Elf32_External_Rela)); |
8535 | bfd_elf32_swap_reloca_out (output_bfd, | |
8536 | &outrel, loc); | |
e515b051 | 8537 | outrel.r_offset += 4; |
70bccea4 AM |
8538 | outrel.r_info |
8539 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
8540 | } |
8541 | } | |
8542 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
8543 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
8544 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8545 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 8546 | else if (indx != 0) |
70bccea4 | 8547 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
8548 | else if (ifunc != NULL) |
8549 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8550 | else | |
8551 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 8552 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
8553 | { |
8554 | outrel.r_addend += relocation; | |
8555 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
8556 | { |
8557 | if (htab->elf.tls_sec == NULL) | |
8558 | outrel.r_addend = 0; | |
8559 | else | |
8560 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
8561 | } | |
e515b051 | 8562 | } |
25f23106 AM |
8563 | loc = rsec->contents; |
8564 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8565 | * sizeof (Elf32_External_Rela)); |
8566 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
8567 | } |
8568 | ||
70bccea4 AM |
8569 | /* Init the .got section contents if we're not |
8570 | emitting a reloc. */ | |
8571 | else | |
7619e7c7 | 8572 | { |
70bccea4 AM |
8573 | bfd_vma value = relocation; |
8574 | ||
f0158f44 | 8575 | if (tls_ty != 0) |
70bccea4 | 8576 | { |
989f9879 AM |
8577 | if (htab->elf.tls_sec == NULL) |
8578 | value = 0; | |
8579 | else | |
8580 | { | |
f0158f44 AM |
8581 | if (tls_ty & TLS_LD) |
8582 | value = 0; | |
8583 | else | |
8584 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 8585 | if (tls_ty & TLS_TPREL) |
989f9879 AM |
8586 | value += DTP_OFFSET - TP_OFFSET; |
8587 | } | |
70bccea4 | 8588 | |
f0158f44 | 8589 | if (tls_ty & (TLS_LD | TLS_GD)) |
7b609f53 | 8590 | { |
95f0d0d2 | 8591 | bfd_put_32 (input_bfd, value, |
ce558b89 | 8592 | htab->elf.sgot->contents + off + 4); |
676ee2b5 | 8593 | value = 1; |
7b609f53 | 8594 | } |
70bccea4 | 8595 | } |
95f0d0d2 | 8596 | bfd_put_32 (input_bfd, value, |
ce558b89 | 8597 | htab->elf.sgot->contents + off); |
7619e7c7 | 8598 | } |
70bccea4 AM |
8599 | |
8600 | off += 4; | |
8601 | if (tls_ty & (TLS_LD | TLS_GD)) | |
8602 | off += 4; | |
7619e7c7 | 8603 | } |
70bccea4 AM |
8604 | while (tls_m != 0); |
8605 | ||
8606 | off = *offp; | |
8607 | *offp = off | 1; | |
7619e7c7 AM |
8608 | } |
8609 | ||
8610 | if (off >= (bfd_vma) -2) | |
8611 | abort (); | |
8612 | ||
70bccea4 AM |
8613 | if ((tls_type & TLS_TLS) != 0) |
8614 | { | |
8615 | if (tls_type != (TLS_TLS | TLS_LD)) | |
8616 | { | |
8617 | if ((tls_mask & TLS_LD) != 0 | |
8618 | && !(h == NULL | |
f5385ebf | 8619 | || !h->def_dynamic)) |
70bccea4 AM |
8620 | off += 8; |
8621 | if (tls_type != (TLS_TLS | TLS_GD)) | |
8622 | { | |
8623 | if ((tls_mask & TLS_GD) != 0) | |
8624 | off += 8; | |
8625 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
8626 | { | |
8627 | if ((tls_mask & TLS_DTPREL) != 0) | |
8628 | off += 4; | |
8629 | } | |
8630 | } | |
8631 | } | |
8632 | } | |
8633 | ||
d3e454b9 AM |
8634 | /* If here for a picfixup, we're done. */ |
8635 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 8636 | goto copy_reloc; |
d3e454b9 | 8637 | |
ce558b89 AM |
8638 | relocation = (htab->elf.sgot->output_section->vma |
8639 | + htab->elf.sgot->output_offset | |
e87d4038 AM |
8640 | + off |
8641 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
8642 | |
8643 | /* Addends on got relocations don't make much sense. | |
8644 | x+off@got is actually x@got+off, and since the got is | |
8645 | generated by a hash table traversal, the value in the | |
8646 | got at entry m+n bears little relation to the entry m. */ | |
8647 | if (addend != 0) | |
25f53a85 | 8648 | info->callbacks->einfo |
695344c0 | 8649 | /* xgettext:c-format */ |
174d0a74 | 8650 | (_("%H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 8651 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 8652 | howto->name, |
7619e7c7 AM |
8653 | sym_name); |
8654 | } | |
86c95733 | 8655 | break; |
7619e7c7 | 8656 | |
86c95733 | 8657 | /* Relocations that need no special processing. */ |
7619e7c7 | 8658 | case R_PPC_LOCAL24PC: |
252b5132 RH |
8659 | /* It makes no sense to point a local relocation |
8660 | at a symbol not in this object. */ | |
7b609f53 | 8661 | if (unresolved_reloc) |
252b5132 | 8662 | { |
1a72702b AM |
8663 | (*info->callbacks->undefined_symbol) (info, |
8664 | h->root.root.string, | |
8665 | input_bfd, | |
8666 | input_section, | |
8667 | rel->r_offset, | |
8668 | TRUE); | |
c316a17c | 8669 | goto copy_reloc; |
252b5132 | 8670 | } |
888a7fc3 AM |
8671 | if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info)) |
8672 | { | |
8673 | /* @local on an ifunc does not really make sense since | |
8674 | the ifunc resolver can take you anywhere. More | |
8675 | seriously, calls to ifuncs must go through a plt call | |
8676 | stub, and for pic the plt call stubs uses r30 to | |
8677 | access the PLT. The problem is that a call that is | |
8678 | local won't have the +32k reloc addend trick marking | |
8679 | -fPIC code, so the linker won't know whether r30 is | |
8680 | _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */ | |
695344c0 | 8681 | /* xgettext:c-format */ |
174d0a74 | 8682 | info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"), |
888a7fc3 AM |
8683 | input_bfd, input_section, rel->r_offset, |
8684 | h->root.root.string); | |
8685 | } | |
252b5132 RH |
8686 | break; |
8687 | ||
7619e7c7 AM |
8688 | case R_PPC_DTPREL16: |
8689 | case R_PPC_DTPREL16_LO: | |
8690 | case R_PPC_DTPREL16_HI: | |
8691 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8692 | if (htab->elf.tls_sec != NULL) |
8693 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8694 | break; |
8695 | ||
70bccea4 AM |
8696 | /* Relocations that may need to be propagated if this is a shared |
8697 | object. */ | |
7619e7c7 AM |
8698 | case R_PPC_TPREL16: |
8699 | case R_PPC_TPREL16_LO: | |
8700 | case R_PPC_TPREL16_HI: | |
8701 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8702 | if (h != NULL |
8703 | && h->root.type == bfd_link_hash_undefweak | |
8704 | && h->dynindx == -1) | |
8705 | { | |
8706 | /* Make this relocation against an undefined weak symbol | |
8707 | resolve to zero. This is really just a tweak, since | |
8708 | code using weak externs ought to check that they are | |
8709 | defined before using them. */ | |
8710 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
95f0d0d2 | 8711 | unsigned int insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
8712 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); |
8713 | if (insn != 0) | |
95f0d0d2 | 8714 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
8715 | break; |
8716 | } | |
989f9879 AM |
8717 | if (htab->elf.tls_sec != NULL) |
8718 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 | 8719 | /* The TPREL16 relocs shouldn't really be used in shared |
7c8bbca5 AM |
8720 | libs or with non-local symbols as that will result in |
8721 | DT_TEXTREL being set, but support them anyway. */ | |
7619e7c7 AM |
8722 | goto dodyn; |
8723 | ||
8724 | case R_PPC_TPREL32: | |
989f9879 AM |
8725 | if (htab->elf.tls_sec != NULL) |
8726 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8727 | goto dodyn; |
8728 | ||
8729 | case R_PPC_DTPREL32: | |
989f9879 AM |
8730 | if (htab->elf.tls_sec != NULL) |
8731 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8732 | goto dodyn; |
8733 | ||
e515b051 AM |
8734 | case R_PPC_DTPMOD32: |
8735 | relocation = 1; | |
8736 | addend = 0; | |
8737 | goto dodyn; | |
8738 | ||
d7128ce4 AM |
8739 | case R_PPC_REL16: |
8740 | case R_PPC_REL16_LO: | |
8741 | case R_PPC_REL16_HI: | |
8742 | case R_PPC_REL16_HA: | |
a680de9a | 8743 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
8744 | break; |
8745 | ||
7619e7c7 | 8746 | case R_PPC_REL32: |
625af618 AM |
8747 | if (h == NULL || h == htab->elf.hgot) |
8748 | break; | |
8749 | /* fall through */ | |
8750 | ||
8751 | case R_PPC_ADDR32: | |
8752 | case R_PPC_ADDR16: | |
8753 | case R_PPC_ADDR16_LO: | |
8754 | case R_PPC_ADDR16_HI: | |
8755 | case R_PPC_ADDR16_HA: | |
8756 | case R_PPC_UADDR32: | |
8757 | case R_PPC_UADDR16: | |
8758 | goto dodyn; | |
8759 | ||
b9c361e0 JL |
8760 | case R_PPC_VLE_REL8: |
8761 | case R_PPC_VLE_REL15: | |
8762 | case R_PPC_VLE_REL24: | |
625af618 | 8763 | case R_PPC_REL24: |
7619e7c7 AM |
8764 | case R_PPC_REL14: |
8765 | case R_PPC_REL14_BRTAKEN: | |
8766 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8767 | /* If these relocations are not to a named symbol, they can be |
8768 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8769 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8770 | || h == htab->elf.hgot) |
252b5132 | 8771 | break; |
70bccea4 | 8772 | /* fall through */ |
252b5132 | 8773 | |
7619e7c7 | 8774 | case R_PPC_ADDR24: |
7619e7c7 AM |
8775 | case R_PPC_ADDR14: |
8776 | case R_PPC_ADDR14_BRTAKEN: | |
8777 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 8778 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
8779 | break; |
8780 | /* fall through */ | |
8781 | ||
7619e7c7 | 8782 | dodyn: |
3348747a NS |
8783 | if ((input_section->flags & SEC_ALLOC) == 0 |
8784 | || is_vxworks_tls) | |
c87b5a93 | 8785 | break; |
c87b5a93 | 8786 | |
287c7eaf AM |
8787 | if (bfd_link_pic (info) |
8788 | ? ((h == NULL | |
8789 | || ppc_elf_hash_entry (h)->dyn_relocs != NULL) | |
8790 | && ((h != NULL && pc_dynrelocs (h)) | |
8791 | || must_be_dyn_reloc (info, r_type))) | |
8792 | : (h != NULL | |
8793 | && ppc_elf_hash_entry (h)->dyn_relocs != NULL)) | |
252b5132 | 8794 | { |
0bb2d96a | 8795 | int skip; |
f95f8542 AM |
8796 | bfd_byte *loc; |
8797 | asection *sreloc; | |
82e66161 AM |
8798 | long indx = 0; |
8799 | ||
252b5132 | 8800 | #ifdef DEBUG |
55fd94b0 AM |
8801 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8802 | "create relocation for %s\n", | |
70bccea4 AM |
8803 | (h && h->root.root.string |
8804 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8805 | #endif |
8806 | ||
8807 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8808 | are copied into the output file to be resolved at run |
8809 | time. */ | |
0bb2d96a | 8810 | skip = 0; |
5b914448 AM |
8811 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8812 | input_section, | |
8813 | rel->r_offset); | |
0bb2d96a JJ |
8814 | if (outrel.r_offset == (bfd_vma) -1 |
8815 | || outrel.r_offset == (bfd_vma) -2) | |
8816 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8817 | outrel.r_offset += (input_section->output_section->vma |
8818 | + input_section->output_offset); | |
8819 | ||
8820 | if (skip) | |
8821 | memset (&outrel, 0, sizeof outrel); | |
21d68fcd | 8822 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 8823 | { |
82e66161 AM |
8824 | indx = h->dynindx; |
8825 | BFD_ASSERT (indx != -1); | |
7619e7c7 | 8826 | unresolved_reloc = FALSE; |
82e66161 | 8827 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
8828 | outrel.r_addend = rel->r_addend; |
8829 | } | |
8830 | else | |
8831 | { | |
47388f4c AM |
8832 | outrel.r_addend = relocation + rel->r_addend; |
8833 | ||
25f23106 | 8834 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8835 | { |
25f23106 AM |
8836 | if (ifunc != NULL) |
8837 | { | |
8838 | /* If we get here when building a static | |
8839 | executable, then the libc startup function | |
8840 | responsible for applying indirect function | |
8841 | relocations is going to complain about | |
8842 | the reloc type. | |
8843 | If we get here when building a dynamic | |
8844 | executable, it will be because we have | |
8845 | a text relocation. The dynamic loader | |
8846 | will set the text segment writable and | |
8847 | non-executable to apply text relocations. | |
8848 | So we'll segfault when trying to run the | |
8849 | indirection function to resolve the reloc. */ | |
25f53a85 | 8850 | info->callbacks->einfo |
695344c0 | 8851 | /* xgettext:c-format */ |
174d0a74 | 8852 | (_("%H: relocation %s for indirect " |
25f53a85 AM |
8853 | "function %s unsupported\n"), |
8854 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8855 | howto->name, |
8856 | sym_name); | |
8857 | ret = FALSE; | |
8858 | } | |
cf35638d | 8859 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8860 | ; |
252b5132 RH |
8861 | else if (sec == NULL || sec->owner == NULL) |
8862 | { | |
8863 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8864 | ret = FALSE; |
252b5132 RH |
8865 | } |
8866 | else | |
8867 | { | |
8868 | asection *osec; | |
8869 | ||
47388f4c AM |
8870 | /* We are turning this relocation into one |
8871 | against a section symbol. It would be | |
8872 | proper to subtract the symbol's value, | |
8873 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8874 | but ld.so expects buggy relocs. |
8875 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
8876 | osec = sec->output_section; |
8877 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
8878 | if (indx == 0) |
8879 | { | |
8880 | osec = htab->elf.text_index_section; | |
8881 | indx = elf_section_data (osec)->dynindx; | |
8882 | } | |
8883 | BFD_ASSERT (indx != 0); | |
252b5132 | 8884 | #ifdef DEBUG |
74541ad4 | 8885 | if (indx == 0) |
e460dd0d | 8886 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
8887 | indx, osec->name, osec->flags, |
8888 | h->root.root.string); | |
252b5132 RH |
8889 | #endif |
8890 | } | |
8891 | ||
8892 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8893 | } |
25f23106 AM |
8894 | else if (ifunc != NULL) |
8895 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8896 | else | |
8897 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8898 | } |
8899 | ||
82e66161 AM |
8900 | sreloc = elf_section_data (input_section)->sreloc; |
8901 | if (ifunc) | |
8902 | { | |
8903 | sreloc = htab->elf.irelplt; | |
8904 | if (indx == 0) | |
8905 | htab->local_ifunc_resolver = 1; | |
8906 | else if (is_static_defined (h)) | |
8907 | htab->maybe_local_ifunc_resolver = 1; | |
8908 | } | |
8909 | if (sreloc == NULL) | |
8910 | return FALSE; | |
8911 | ||
947216bf AM |
8912 | loc = sreloc->contents; |
8913 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8914 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8915 | |
2243deae | 8916 | if (skip == -1) |
c316a17c | 8917 | goto copy_reloc; |
2243deae | 8918 | |
f0158f44 AM |
8919 | /* This reloc will be computed at runtime. Clear the memory |
8920 | so that it contains a predictable value for prelink. */ | |
8921 | if (!skip) | |
2243deae L |
8922 | { |
8923 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8924 | addend = 0; | |
8925 | break; | |
8926 | } | |
252b5132 | 8927 | } |
252b5132 RH |
8928 | break; |
8929 | ||
32af9f6e AM |
8930 | case R_PPC_RELAX_PLT: |
8931 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8932 | if (h != NULL) |
8933 | { | |
32af9f6e AM |
8934 | struct plt_entry *ent; |
8935 | bfd_vma got2_addend = 0; | |
8936 | ||
8937 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8938 | { | |
0e1862bb | 8939 | if (bfd_link_pic (info)) |
32af9f6e AM |
8940 | got2_addend = addend; |
8941 | addend = 0; | |
8942 | } | |
8943 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8944 | if (htab->plt_type == PLT_NEW) |
8945 | relocation = (htab->glink->output_section->vma | |
8946 | + htab->glink->output_offset | |
8947 | + ent->glink_offset); | |
8948 | else | |
ce558b89 AM |
8949 | relocation = (htab->elf.splt->output_section->vma |
8950 | + htab->elf.splt->output_offset | |
de972ffa AM |
8951 | + ent->plt.offset); |
8952 | } | |
1a0670f3 | 8953 | /* Fall through. */ |
b4a38de6 | 8954 | |
32af9f6e | 8955 | case R_PPC_RELAX: |
9abc968f | 8956 | { |
53291d1f AM |
8957 | const int *stub; |
8958 | size_t size; | |
8959 | size_t insn_offset = rel->r_offset; | |
8960 | unsigned int insn; | |
9abc968f | 8961 | |
0e1862bb | 8962 | if (bfd_link_pic (info)) |
53291d1f AM |
8963 | { |
8964 | relocation -= (input_section->output_section->vma | |
8965 | + input_section->output_offset | |
8966 | + rel->r_offset - 4); | |
8967 | stub = shared_stub_entry; | |
95f0d0d2 AM |
8968 | bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12); |
8969 | bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8); | |
8970 | bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4); | |
53291d1f AM |
8971 | stub += 3; |
8972 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8973 | } | |
8974 | else | |
8975 | { | |
8976 | stub = stub_entry; | |
8977 | size = ARRAY_SIZE (stub_entry); | |
8978 | } | |
1be5d8d3 | 8979 | --size; |
9abc968f | 8980 | |
9abc968f | 8981 | relocation += addend; |
0e1862bb | 8982 | if (bfd_link_relocatable (info)) |
53291d1f AM |
8983 | relocation = 0; |
8984 | ||
8985 | /* First insn is HA, second is LO. */ | |
8986 | insn = *stub++; | |
8987 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
95f0d0d2 | 8988 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8989 | insn_offset += 4; |
8990 | ||
8991 | insn = *stub++; | |
8992 | insn |= relocation & 0xffff; | |
95f0d0d2 | 8993 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8994 | insn_offset += 4; |
8995 | size -= 2; | |
8996 | ||
8997 | while (size != 0) | |
8998 | { | |
8999 | insn = *stub++; | |
9000 | --size; | |
95f0d0d2 | 9001 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
9002 | insn_offset += 4; |
9003 | } | |
1be5d8d3 | 9004 | output_bctr (htab, input_bfd, contents + insn_offset); |
9bc4e62b NS |
9005 | |
9006 | /* Rewrite the reloc and convert one of the trailing nop | |
9007 | relocs to describe this relocation. */ | |
9008 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
9009 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
9010 | wrel->r_offset = rel->r_offset + d_offset; |
9011 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
9012 | wrel->r_addend = rel->r_addend; | |
9013 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
9014 | wrel++, rel++; | |
9015 | wrel->r_offset += 4; | |
9016 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 9017 | } |
8517fae7 | 9018 | continue; |
deaaf2f3 | 9019 | |
70bccea4 | 9020 | /* Indirect .sdata relocation. */ |
7619e7c7 | 9021 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 9022 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
9023 | if (!is_static_defined (htab->sdata[0].sym)) |
9024 | { | |
9025 | unresolved_reloc = TRUE; | |
9026 | break; | |
9027 | } | |
7619e7c7 | 9028 | relocation |
76750a2f AM |
9029 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
9030 | h, relocation, rel); | |
bd6c6e2b | 9031 | addend = 0; |
252b5132 RH |
9032 | break; |
9033 | ||
70bccea4 | 9034 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 9035 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 9036 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
9037 | if (!is_static_defined (htab->sdata[1].sym)) |
9038 | { | |
9039 | unresolved_reloc = TRUE; | |
9040 | break; | |
9041 | } | |
7619e7c7 | 9042 | relocation |
76750a2f AM |
9043 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
9044 | h, relocation, rel); | |
bd6c6e2b | 9045 | addend = 0; |
252b5132 RH |
9046 | break; |
9047 | ||
70bccea4 AM |
9048 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
9049 | section, not the actual VMA. This is appropriate when generating | |
9050 | an embedded ELF object, for which the .got section acts like the | |
9051 | AIX .toc section. */ | |
7619e7c7 | 9052 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
9053 | if (sec == NULL || sec->output_section == NULL) |
9054 | { | |
9055 | unresolved_reloc = TRUE; | |
9056 | break; | |
9057 | } | |
a0f49396 NC |
9058 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
9059 | ".got") == 0 | |
9060 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
9061 | ".cgot") == 0); | |
252b5132 | 9062 | |
3b4f3a11 | 9063 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
9064 | break; |
9065 | ||
7619e7c7 | 9066 | case R_PPC_PLTREL24: |
f75e0e33 AM |
9067 | if (h != NULL && ifunc == NULL) |
9068 | { | |
cbf95972 AM |
9069 | struct plt_entry *ent; |
9070 | ||
9071 | ent = find_plt_ent (&h->plt.plist, got2, | |
9072 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 | 9073 | if (ent == NULL |
ce558b89 | 9074 | || htab->elf.splt == NULL) |
f75e0e33 AM |
9075 | { |
9076 | /* We didn't make a PLT entry for this symbol. This | |
9077 | happens when statically linking PIC code, or when | |
9078 | using -Bsymbolic. */ | |
9079 | } | |
9080 | else | |
9081 | { | |
9082 | /* Relocation is to the entry for this symbol in the | |
9083 | procedure linkage table. */ | |
9084 | unresolved_reloc = FALSE; | |
9085 | if (htab->plt_type == PLT_NEW) | |
9086 | relocation = (htab->glink->output_section->vma | |
9087 | + htab->glink->output_offset | |
9088 | + ent->glink_offset); | |
9089 | else | |
ce558b89 AM |
9090 | relocation = (htab->elf.splt->output_section->vma |
9091 | + htab->elf.splt->output_offset | |
f75e0e33 AM |
9092 | + ent->plt.offset); |
9093 | } | |
9094 | } | |
252b5132 | 9095 | |
f75e0e33 AM |
9096 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
9097 | addend specifies the GOT pointer offset within .got2. | |
9098 | Don't apply it to the relocation field. */ | |
9099 | addend = 0; | |
8da6118f | 9100 | break; |
252b5132 | 9101 | |
70bccea4 | 9102 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 9103 | case R_PPC_SDAREL16: |
252b5132 RH |
9104 | { |
9105 | const char *name; | |
bd6c6e2b | 9106 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 9107 | |
bd6c6e2b AM |
9108 | if (sec == NULL |
9109 | || sec->output_section == NULL | |
9110 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9111 | { |
9112 | unresolved_reloc = TRUE; | |
9113 | break; | |
9114 | } | |
bd6c6e2b | 9115 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9116 | |
a0f49396 | 9117 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9118 | if (!(strcmp (name, ".sdata") == 0 |
9119 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 9120 | { |
25f53a85 | 9121 | info->callbacks->einfo |
695344c0 | 9122 | /* xgettext:c-format */ |
8de848d8 | 9123 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9124 | "in the wrong output section (%s)\n"), |
d003868e | 9125 | input_bfd, |
55fd94b0 AM |
9126 | sym_name, |
9127 | howto->name, | |
9128 | name); | |
252b5132 | 9129 | } |
252b5132 RH |
9130 | } |
9131 | break; | |
9132 | ||
70bccea4 | 9133 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 9134 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
9135 | { |
9136 | const char *name; | |
bd6c6e2b | 9137 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 9138 | |
bd6c6e2b AM |
9139 | if (sec == NULL |
9140 | || sec->output_section == NULL | |
9141 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9142 | { |
9143 | unresolved_reloc = TRUE; | |
9144 | break; | |
9145 | } | |
bd6c6e2b | 9146 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9147 | |
a0f49396 | 9148 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9149 | if (!(strcmp (name, ".sdata2") == 0 |
9150 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 9151 | { |
25f53a85 | 9152 | info->callbacks->einfo |
695344c0 | 9153 | /* xgettext:c-format */ |
8de848d8 | 9154 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9155 | "in the wrong output section (%s)\n"), |
d003868e | 9156 | input_bfd, |
55fd94b0 AM |
9157 | sym_name, |
9158 | howto->name, | |
9159 | name); | |
252b5132 | 9160 | } |
252b5132 RH |
9161 | } |
9162 | break; | |
9163 | ||
b9c361e0 | 9164 | case R_PPC_VLE_LO16A: |
86c95733 | 9165 | relocation = relocation + addend; |
08dc996f AM |
9166 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9167 | contents + rel->r_offset, relocation, | |
9168 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9169 | goto copy_reloc; |
b9c361e0 JL |
9170 | |
9171 | case R_PPC_VLE_LO16D: | |
86c95733 | 9172 | relocation = relocation + addend; |
08dc996f AM |
9173 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9174 | contents + rel->r_offset, relocation, | |
9175 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9176 | goto copy_reloc; |
b9c361e0 JL |
9177 | |
9178 | case R_PPC_VLE_HI16A: | |
86c95733 | 9179 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9180 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9181 | contents + rel->r_offset, relocation, | |
9182 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9183 | goto copy_reloc; |
b9c361e0 JL |
9184 | |
9185 | case R_PPC_VLE_HI16D: | |
86c95733 | 9186 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9187 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9188 | contents + rel->r_offset, relocation, | |
9189 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9190 | goto copy_reloc; |
b9c361e0 JL |
9191 | |
9192 | case R_PPC_VLE_HA16A: | |
86c95733 | 9193 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9194 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9195 | contents + rel->r_offset, relocation, | |
9196 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9197 | goto copy_reloc; |
b9c361e0 JL |
9198 | |
9199 | case R_PPC_VLE_HA16D: | |
86c95733 | 9200 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9201 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9202 | contents + rel->r_offset, relocation, | |
9203 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9204 | goto copy_reloc; |
b9c361e0 | 9205 | |
70bccea4 | 9206 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 9207 | case R_PPC_EMB_SDA21: |
b9c361e0 | 9208 | case R_PPC_VLE_SDA21: |
7619e7c7 | 9209 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 9210 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
9211 | { |
9212 | const char *name; | |
9213 | int reg; | |
86c95733 | 9214 | unsigned int insn; |
bd6c6e2b | 9215 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 9216 | |
3b4f3a11 AM |
9217 | if (sec == NULL || sec->output_section == NULL) |
9218 | { | |
9219 | unresolved_reloc = TRUE; | |
9220 | break; | |
9221 | } | |
9222 | ||
a0f49396 | 9223 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9224 | if (strcmp (name, ".sdata") == 0 |
9225 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
9226 | { |
9227 | reg = 13; | |
bd6c6e2b | 9228 | sda = htab->sdata[0].sym; |
252b5132 | 9229 | } |
93d1b056 AM |
9230 | else if (strcmp (name, ".sdata2") == 0 |
9231 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
9232 | { |
9233 | reg = 2; | |
bd6c6e2b | 9234 | sda = htab->sdata[1].sym; |
252b5132 | 9235 | } |
8da6118f KH |
9236 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
9237 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
9238 | { |
9239 | reg = 0; | |
9240 | } | |
252b5132 RH |
9241 | else |
9242 | { | |
25f53a85 | 9243 | info->callbacks->einfo |
695344c0 | 9244 | /* xgettext:c-format */ |
8de848d8 | 9245 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9246 | "in the wrong output section (%s)\n"), |
d003868e | 9247 | input_bfd, |
55fd94b0 AM |
9248 | sym_name, |
9249 | howto->name, | |
9250 | name); | |
252b5132 RH |
9251 | |
9252 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9253 | ret = FALSE; |
c316a17c | 9254 | goto copy_reloc; |
252b5132 RH |
9255 | } |
9256 | ||
bd6c6e2b AM |
9257 | if (sda != NULL) |
9258 | { | |
9259 | if (!is_static_defined (sda)) | |
9260 | { | |
9261 | unresolved_reloc = TRUE; | |
9262 | break; | |
9263 | } | |
9264 | addend -= SYM_VAL (sda); | |
9265 | } | |
9266 | ||
95f0d0d2 | 9267 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
b9c361e0 JL |
9268 | if (reg == 0 |
9269 | && (r_type == R_PPC_VLE_SDA21 | |
9270 | || r_type == R_PPC_VLE_SDA21_LO)) | |
9271 | { | |
86c95733 AM |
9272 | relocation = relocation + addend; |
9273 | addend = 0; | |
9274 | ||
9275 | /* Force e_li insn, keeping RT from original insn. */ | |
9276 | insn &= 0x1f << 21; | |
9277 | insn |= 28u << 26; | |
9278 | ||
9279 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
9280 | /* Top 4 bits of value to 17..20. */ | |
9281 | insn |= (relocation & 0xf0000) >> 5; | |
9282 | /* Next 5 bits of the value to 11..15. */ | |
9283 | insn |= (relocation & 0xf800) << 5; | |
9284 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
9285 | insn |= relocation & 0x7ff; | |
9286 | ||
95f0d0d2 | 9287 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
c3301df1 AM |
9288 | |
9289 | if (r_type == R_PPC_VLE_SDA21 | |
9290 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
9291 | goto overflow; | |
c316a17c | 9292 | goto copy_reloc; |
b9c361e0 JL |
9293 | } |
9294 | else if (r_type == R_PPC_EMB_SDA21 | |
9295 | || r_type == R_PPC_VLE_SDA21 | |
9296 | || r_type == R_PPC_VLE_SDA21_LO) | |
91d6fa6a | 9297 | { |
86c95733 | 9298 | /* Fill in register field. */ |
252b5132 | 9299 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
252b5132 | 9300 | } |
95f0d0d2 | 9301 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
9302 | } |
9303 | break; | |
9304 | ||
b9c361e0 JL |
9305 | case R_PPC_VLE_SDAREL_LO16A: |
9306 | case R_PPC_VLE_SDAREL_LO16D: | |
9307 | case R_PPC_VLE_SDAREL_HI16A: | |
9308 | case R_PPC_VLE_SDAREL_HI16D: | |
9309 | case R_PPC_VLE_SDAREL_HA16A: | |
9310 | case R_PPC_VLE_SDAREL_HA16D: | |
9311 | { | |
9312 | bfd_vma value; | |
9313 | const char *name; | |
b9c361e0 JL |
9314 | struct elf_link_hash_entry *sda = NULL; |
9315 | ||
9316 | if (sec == NULL || sec->output_section == NULL) | |
9317 | { | |
9318 | unresolved_reloc = TRUE; | |
9319 | break; | |
9320 | } | |
9321 | ||
a0f49396 | 9322 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9323 | if (strcmp (name, ".sdata") == 0 |
9324 | || strcmp (name, ".sbss") == 0) | |
5499c7c7 | 9325 | sda = htab->sdata[0].sym; |
93d1b056 AM |
9326 | else if (strcmp (name, ".sdata2") == 0 |
9327 | || strcmp (name, ".sbss2") == 0) | |
5499c7c7 | 9328 | sda = htab->sdata[1].sym; |
b9c361e0 JL |
9329 | else |
9330 | { | |
4eca0228 | 9331 | _bfd_error_handler |
695344c0 | 9332 | /* xgettext:c-format */ |
b9c361e0 JL |
9333 | (_("%B: the target (%s) of a %s relocation is " |
9334 | "in the wrong output section (%s)"), | |
9335 | input_bfd, | |
9336 | sym_name, | |
9337 | howto->name, | |
9338 | name); | |
9339 | ||
9340 | bfd_set_error (bfd_error_bad_value); | |
9341 | ret = FALSE; | |
c316a17c | 9342 | goto copy_reloc; |
b9c361e0 JL |
9343 | } |
9344 | ||
5499c7c7 | 9345 | if (sda == NULL || !is_static_defined (sda)) |
b9c361e0 | 9346 | { |
5499c7c7 AM |
9347 | unresolved_reloc = TRUE; |
9348 | break; | |
b9c361e0 | 9349 | } |
5499c7c7 | 9350 | value = relocation + addend - SYM_VAL (sda); |
86c95733 AM |
9351 | |
9352 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
08dc996f AM |
9353 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9354 | contents + rel->r_offset, value, | |
9355 | split16a_type, | |
9356 | htab->params->vle_reloc_fixup); | |
86c95733 | 9357 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) |
08dc996f AM |
9358 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9359 | contents + rel->r_offset, value, | |
9360 | split16d_type, | |
9361 | htab->params->vle_reloc_fixup); | |
86c95733 | 9362 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) |
b9c361e0 | 9363 | { |
86c95733 | 9364 | value = value >> 16; |
08dc996f AM |
9365 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9366 | contents + rel->r_offset, value, | |
9367 | split16a_type, | |
9368 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9369 | } |
86c95733 | 9370 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 9371 | { |
86c95733 | 9372 | value = value >> 16; |
08dc996f AM |
9373 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9374 | contents + rel->r_offset, value, | |
9375 | split16d_type, | |
9376 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9377 | } |
86c95733 | 9378 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 9379 | { |
86c95733 | 9380 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9381 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9382 | contents + rel->r_offset, value, | |
9383 | split16a_type, | |
9384 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9385 | } |
86c95733 | 9386 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 9387 | { |
86c95733 | 9388 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9389 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9390 | contents + rel->r_offset, value, | |
9391 | split16d_type, | |
9392 | htab->params->vle_reloc_fixup); | |
b9c361e0 JL |
9393 | } |
9394 | } | |
c316a17c | 9395 | goto copy_reloc; |
b9c361e0 | 9396 | |
83eef883 AFB |
9397 | case R_PPC_VLE_ADDR20: |
9398 | ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation); | |
9399 | continue; | |
9400 | ||
70bccea4 | 9401 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
9402 | case R_PPC_SECTOFF: |
9403 | case R_PPC_SECTOFF_LO: | |
9404 | case R_PPC_SECTOFF_HI: | |
9405 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
9406 | if (sec == NULL || sec->output_section == NULL) |
9407 | { | |
9408 | unresolved_reloc = TRUE; | |
9409 | break; | |
9410 | } | |
252b5132 | 9411 | addend -= sec->output_section->vma; |
252b5132 RH |
9412 | break; |
9413 | ||
70bccea4 | 9414 | /* Negative relocations. */ |
7619e7c7 AM |
9415 | case R_PPC_EMB_NADDR32: |
9416 | case R_PPC_EMB_NADDR16: | |
9417 | case R_PPC_EMB_NADDR16_LO: | |
9418 | case R_PPC_EMB_NADDR16_HI: | |
9419 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 9420 | addend -= 2 * relocation; |
252b5132 RH |
9421 | break; |
9422 | ||
7619e7c7 AM |
9423 | case R_PPC_COPY: |
9424 | case R_PPC_GLOB_DAT: | |
9425 | case R_PPC_JMP_SLOT: | |
9426 | case R_PPC_RELATIVE: | |
e054468f | 9427 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
9428 | case R_PPC_PLT32: |
9429 | case R_PPC_PLTREL32: | |
9430 | case R_PPC_PLT16_LO: | |
9431 | case R_PPC_PLT16_HI: | |
9432 | case R_PPC_PLT16_HA: | |
9433 | case R_PPC_ADDR30: | |
9434 | case R_PPC_EMB_RELSEC16: | |
9435 | case R_PPC_EMB_RELST_LO: | |
9436 | case R_PPC_EMB_RELST_HI: | |
9437 | case R_PPC_EMB_RELST_HA: | |
9438 | case R_PPC_EMB_BIT_FLD: | |
25f53a85 | 9439 | info->callbacks->einfo |
695344c0 | 9440 | /* xgettext:c-format */ |
8de848d8 | 9441 | (_("%P: %B: relocation %s is not yet supported for symbol %s\n"), |
d003868e | 9442 | input_bfd, |
7619e7c7 AM |
9443 | howto->name, |
9444 | sym_name); | |
252b5132 RH |
9445 | |
9446 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9447 | ret = FALSE; |
c316a17c | 9448 | goto copy_reloc; |
7619e7c7 | 9449 | } |
252b5132 | 9450 | |
7619e7c7 AM |
9451 | /* Do any further special processing. */ |
9452 | switch (r_type) | |
9453 | { | |
9454 | default: | |
9455 | break; | |
9456 | ||
9457 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 9458 | case R_PPC_REL16_HA: |
a680de9a | 9459 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
9460 | case R_PPC_SECTOFF_HA: |
9461 | case R_PPC_TPREL16_HA: | |
9462 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
9463 | case R_PPC_EMB_NADDR16_HA: |
9464 | case R_PPC_EMB_RELST_HA: | |
9465 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 9466 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
9467 | 'sec' would be NULL, and we should leave the symbol |
9468 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
9469 | if (sec == NULL) |
9470 | break; | |
1a0670f3 | 9471 | /* Fall through. */ |
5c5f6e17 AM |
9472 | |
9473 | case R_PPC_PLT16_HA: | |
9474 | case R_PPC_GOT16_HA: | |
9475 | case R_PPC_GOT_TLSGD16_HA: | |
9476 | case R_PPC_GOT_TLSLD16_HA: | |
9477 | case R_PPC_GOT_TPREL16_HA: | |
9478 | case R_PPC_GOT_DTPREL16_HA: | |
9479 | /* Add 0x10000 if sign bit in 0:15 is set. | |
9480 | Bits 0:15 are not used. */ | |
9481 | addend += 0x8000; | |
7619e7c7 | 9482 | break; |
1fe532cf AM |
9483 | |
9484 | case R_PPC_ADDR16: | |
9485 | case R_PPC_ADDR16_LO: | |
9486 | case R_PPC_GOT16: | |
9487 | case R_PPC_GOT16_LO: | |
9488 | case R_PPC_SDAREL16: | |
9489 | case R_PPC_SECTOFF: | |
9490 | case R_PPC_SECTOFF_LO: | |
9491 | case R_PPC_DTPREL16: | |
9492 | case R_PPC_DTPREL16_LO: | |
9493 | case R_PPC_TPREL16: | |
9494 | case R_PPC_TPREL16_LO: | |
9495 | case R_PPC_GOT_TLSGD16: | |
9496 | case R_PPC_GOT_TLSGD16_LO: | |
9497 | case R_PPC_GOT_TLSLD16: | |
9498 | case R_PPC_GOT_TLSLD16_LO: | |
9499 | case R_PPC_GOT_DTPREL16: | |
9500 | case R_PPC_GOT_DTPREL16_LO: | |
9501 | case R_PPC_GOT_TPREL16: | |
9502 | case R_PPC_GOT_TPREL16_LO: | |
9503 | { | |
9504 | /* The 32-bit ABI lacks proper relocations to deal with | |
9505 | certain 64-bit instructions. Prevent damage to bits | |
9506 | that make up part of the insn opcode. */ | |
9507 | unsigned int insn, mask, lobit; | |
9508 | ||
95f0d0d2 | 9509 | insn = bfd_get_32 (input_bfd, |
c316a17c | 9510 | contents + rel->r_offset - d_offset); |
1fe532cf AM |
9511 | mask = 0; |
9512 | if (is_insn_ds_form (insn)) | |
9513 | mask = 3; | |
9514 | else if (is_insn_dq_form (insn)) | |
9515 | mask = 15; | |
9516 | else | |
9517 | break; | |
a680de9a PB |
9518 | relocation += addend; |
9519 | addend = insn & mask; | |
9520 | lobit = mask & relocation; | |
1fe532cf AM |
9521 | if (lobit != 0) |
9522 | { | |
a680de9a | 9523 | relocation ^= lobit; |
1fe532cf | 9524 | info->callbacks->einfo |
695344c0 | 9525 | /* xgettext:c-format */ |
174d0a74 | 9526 | (_("%H: error: %s against `%s' not a multiple of %u\n"), |
1fe532cf AM |
9527 | input_bfd, input_section, rel->r_offset, |
9528 | howto->name, sym_name, mask + 1); | |
9529 | bfd_set_error (bfd_error_bad_value); | |
9530 | ret = FALSE; | |
9531 | } | |
1fe532cf AM |
9532 | } |
9533 | break; | |
252b5132 RH |
9534 | } |
9535 | ||
252b5132 | 9536 | #ifdef DEBUG |
55fd94b0 AM |
9537 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
9538 | "offset = %ld, addend = %ld\n", | |
252b5132 | 9539 | howto->name, |
8da6118f | 9540 | (int) r_type, |
252b5132 RH |
9541 | sym_name, |
9542 | r_symndx, | |
7619e7c7 | 9543 | (long) rel->r_offset, |
8da6118f | 9544 | (long) addend); |
252b5132 RH |
9545 | #endif |
9546 | ||
7619e7c7 AM |
9547 | if (unresolved_reloc |
9548 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
9549 | && h->def_dynamic) |
9550 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
9551 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 9552 | { |
25f53a85 | 9553 | info->callbacks->einfo |
695344c0 | 9554 | /* xgettext:c-format */ |
174d0a74 | 9555 | (_("%H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 9556 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9557 | howto->name, |
7619e7c7 AM |
9558 | sym_name); |
9559 | ret = FALSE; | |
9560 | } | |
9561 | ||
86c95733 AM |
9562 | /* 16-bit fields in insns mostly have signed values, but a |
9563 | few insns have 16-bit unsigned values. Really, we should | |
9564 | have different reloc types. */ | |
9565 | if (howto->complain_on_overflow != complain_overflow_dont | |
9566 | && howto->dst_mask == 0xffff | |
9567 | && (input_section->flags & SEC_CODE) != 0) | |
9568 | { | |
9569 | enum complain_overflow complain = complain_overflow_signed; | |
9570 | ||
9571 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9572 | { | |
9573 | unsigned int insn; | |
9574 | ||
9575 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
9576 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9577 | complain = complain_overflow_bitfield; | |
9578 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9579 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9580 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9581 | complain = complain_overflow_unsigned; |
9582 | } | |
9583 | if (howto->complain_on_overflow != complain) | |
9584 | { | |
9585 | alt_howto = *howto; | |
9586 | alt_howto.complain_on_overflow = complain; | |
9587 | howto = &alt_howto; | |
9588 | } | |
9589 | } | |
9590 | ||
a680de9a PB |
9591 | if (r_type == R_PPC_REL16DX_HA) |
9592 | { | |
9593 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
9594 | if (rel->r_offset + 4 > input_section->size) | |
9595 | r = bfd_reloc_outofrange; | |
9596 | else | |
9597 | { | |
9598 | unsigned int insn; | |
9599 | ||
9600 | relocation += addend; | |
9601 | relocation -= (rel->r_offset | |
9602 | + input_section->output_offset | |
9603 | + input_section->output_section->vma); | |
9604 | relocation >>= 16; | |
9605 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9606 | insn &= ~0x1fffc1; | |
9607 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
9608 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9609 | r = bfd_reloc_ok; | |
9610 | } | |
9611 | } | |
9612 | else | |
9613 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9614 | rel->r_offset, relocation, addend); | |
252b5132 | 9615 | |
7619e7c7 | 9616 | if (r != bfd_reloc_ok) |
252b5132 | 9617 | { |
7619e7c7 | 9618 | if (r == bfd_reloc_overflow) |
252b5132 | 9619 | { |
c3301df1 | 9620 | overflow: |
8131c122 AM |
9621 | /* On code like "if (foo) foo();" don't report overflow |
9622 | on a branch to zero when foo is undefined. */ | |
9623 | if (!warned | |
9624 | && !(h != NULL | |
9625 | && (h->root.type == bfd_link_hash_undefweak | |
9626 | || h->root.type == bfd_link_hash_undefined) | |
9627 | && is_branch_reloc (r_type))) | |
1a72702b AM |
9628 | info->callbacks->reloc_overflow |
9629 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
9630 | rel->r_addend, input_bfd, input_section, rel->r_offset); | |
dc1bc0c9 RH |
9631 | } |
9632 | else | |
9633 | { | |
25f53a85 | 9634 | info->callbacks->einfo |
695344c0 | 9635 | /* xgettext:c-format */ |
174d0a74 | 9636 | (_("%H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9637 | input_bfd, input_section, rel->r_offset, |
9638 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9639 | ret = FALSE; |
252b5132 RH |
9640 | } |
9641 | } | |
c316a17c AM |
9642 | copy_reloc: |
9643 | if (wrel != rel) | |
9644 | *wrel = *rel; | |
9645 | } | |
9646 | ||
9647 | if (wrel != rel) | |
9648 | { | |
9649 | Elf_Internal_Shdr *rel_hdr; | |
9650 | size_t deleted = rel - wrel; | |
9651 | ||
9652 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
9653 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9654 | if (rel_hdr->sh_size == 0) | |
9655 | { | |
9656 | /* It is too late to remove an empty reloc section. Leave | |
9657 | one NONE reloc. | |
9658 | ??? What is wrong with an empty section??? */ | |
9659 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
9660 | deleted -= 1; | |
9661 | wrel++; | |
9662 | } | |
9663 | relend = wrel; | |
9664 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
9665 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9666 | input_section->reloc_count -= deleted; | |
252b5132 RH |
9667 | } |
9668 | ||
252b5132 RH |
9669 | #ifdef DEBUG |
9670 | fprintf (stderr, "\n"); | |
9671 | #endif | |
9672 | ||
53291d1f AM |
9673 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9674 | && input_section->size != input_section->rawsize | |
9675 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9676 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9677 | { | |
9678 | /* Branch around the trampolines. */ | |
9679 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9680 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9681 | } | |
9682 | ||
5446cbdf | 9683 | if (htab->params->ppc476_workaround |
795bc6b3 | 9684 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 9685 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
9686 | || (input_section->output_section->alignment_power |
9687 | >= htab->params->pagesize_p2))) | |
5446cbdf | 9688 | { |
5446cbdf | 9689 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 9690 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 9691 | |
5446cbdf | 9692 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
9693 | { |
9694 | bfd_byte *p; | |
9695 | unsigned int n; | |
9696 | bfd_byte fill[4]; | |
9697 | ||
9698 | bfd_put_32 (input_bfd, BA, fill); | |
9699 | p = contents + input_section->size - relax_info->workaround_size; | |
9700 | n = relax_info->workaround_size >> 2; | |
9701 | while (n--) | |
9702 | { | |
9703 | memcpy (p, fill, 4); | |
9704 | p += 4; | |
9705 | } | |
9706 | } | |
5446cbdf AM |
9707 | |
9708 | /* The idea is: Replace the last instruction on a page with a | |
9709 | branch to a patch area. Put the insn there followed by a | |
9710 | branch back to the next page. Complicated a little by | |
9711 | needing to handle moved conditional branches, and by not | |
9712 | wanting to touch data-in-text. */ | |
9713 | ||
9714 | start_addr = (input_section->output_section->vma | |
9715 | + input_section->output_offset); | |
9716 | end_addr = (start_addr + input_section->size | |
9717 | - relax_info->workaround_size); | |
9718 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9719 | addr < end_addr; | |
9720 | addr += pagesize) | |
9721 | { | |
9722 | bfd_vma offset = addr - start_addr; | |
9723 | Elf_Internal_Rela *lo, *hi; | |
9724 | bfd_boolean is_data; | |
9725 | bfd_vma patch_off, patch_addr; | |
9726 | unsigned int insn; | |
9727 | ||
9728 | /* Do we have a data reloc at this offset? If so, leave | |
9729 | the word alone. */ | |
9730 | is_data = FALSE; | |
9731 | lo = relocs; | |
668e22e5 AM |
9732 | hi = relend; |
9733 | rel = NULL; | |
5446cbdf AM |
9734 | while (lo < hi) |
9735 | { | |
9736 | rel = lo + (hi - lo) / 2; | |
9737 | if (rel->r_offset < offset) | |
9738 | lo = rel + 1; | |
668e22e5 | 9739 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9740 | hi = rel; |
9741 | else | |
9742 | { | |
9743 | switch (ELF32_R_TYPE (rel->r_info)) | |
9744 | { | |
9745 | case R_PPC_ADDR32: | |
9746 | case R_PPC_UADDR32: | |
9747 | case R_PPC_REL32: | |
9748 | case R_PPC_ADDR30: | |
9749 | is_data = TRUE; | |
9750 | break; | |
9751 | default: | |
9752 | break; | |
9753 | } | |
9754 | break; | |
9755 | } | |
9756 | } | |
9757 | if (is_data) | |
9758 | continue; | |
9759 | ||
b4ab4364 AM |
9760 | /* Some instructions can be left alone too. Unconditional |
9761 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9762 | avoid the icache failure. | |
9763 | ||
9764 | The problem occurs due to prefetch across a page boundary | |
9765 | where stale instructions can be fetched from the next | |
9766 | page, and the mechanism for flushing these bad | |
9767 | instructions fails under certain circumstances. The | |
9768 | unconditional branches: | |
9769 | 1) Branch: b, bl, ba, bla, | |
9770 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9771 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9772 | where (2) and (3) have BO=0x14 making them unconditional, | |
9773 | prevent the bad prefetch because the prefetch itself is | |
9774 | affected by these instructions. This happens even if the | |
9775 | instruction is not executed. | |
9776 | ||
9777 | A bctr example: | |
9778 | . | |
9779 | . lis 9,new_page@ha | |
9780 | . addi 9,9,new_page@l | |
9781 | . mtctr 9 | |
9782 | . bctr | |
9783 | . nop | |
9784 | . nop | |
9785 | . new_page: | |
9786 | . | |
9787 | The bctr is not predicted taken due to ctr not being | |
9788 | ready, so prefetch continues on past the bctr into the | |
9789 | new page which might have stale instructions. If they | |
9790 | fail to be flushed, then they will be executed after the | |
9791 | bctr executes. Either of the following modifications | |
9792 | prevent the bad prefetch from happening in the first | |
9793 | place: | |
9794 | . | |
1b786873 L |
9795 | . lis 9,new_page@ha lis 9,new_page@ha |
9796 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9797 | . mtctr 9 mtctr 9 | |
9798 | . bctr bctr | |
b4ab4364 | 9799 | . nop b somewhere_else |
1b786873 L |
9800 | . b somewhere_else nop |
9801 | . new_page: new_page: | |
b4ab4364 | 9802 | . */ |
5446cbdf | 9803 | insn = bfd_get_32 (input_bfd, contents + offset); |
07d6d2b8 AM |
9804 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9805 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
9806 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 9807 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 | 9808 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
07d6d2b8 | 9809 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ |
5446cbdf AM |
9810 | continue; |
9811 | ||
9812 | patch_addr = (start_addr + input_section->size | |
9813 | - relax_info->workaround_size); | |
9814 | patch_addr = (patch_addr + 15) & -16; | |
9815 | patch_off = patch_addr - start_addr; | |
9816 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9817 | |
9818 | if (rel != NULL | |
9819 | && rel->r_offset >= offset | |
9820 | && rel->r_offset < offset + 4) | |
9821 | { | |
f8b44781 AM |
9822 | asection *sreloc; |
9823 | ||
668e22e5 AM |
9824 | /* If the insn we are patching had a reloc, adjust the |
9825 | reloc r_offset so that the reloc applies to the moved | |
9826 | location. This matters for -r and --emit-relocs. */ | |
9827 | if (rel + 1 != relend) | |
9828 | { | |
9829 | Elf_Internal_Rela tmp = *rel; | |
9830 | ||
9831 | /* Keep the relocs sorted by r_offset. */ | |
9832 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9833 | relend[-1] = tmp; | |
9834 | } | |
9835 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
9836 | |
9837 | /* Adjust REL16 addends too. */ | |
9838 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
9839 | { | |
9840 | case R_PPC_REL16: | |
9841 | case R_PPC_REL16_LO: | |
9842 | case R_PPC_REL16_HI: | |
9843 | case R_PPC_REL16_HA: | |
9844 | relend[-1].r_addend += patch_off - offset; | |
9845 | break; | |
9846 | default: | |
9847 | break; | |
9848 | } | |
9849 | ||
9850 | /* If we are building a PIE or shared library with | |
9851 | non-PIC objects, perhaps we had a dynamic reloc too? | |
9852 | If so, the dynamic reloc must move with the insn. */ | |
9853 | sreloc = elf_section_data (input_section)->sreloc; | |
9854 | if (sreloc != NULL) | |
9855 | { | |
1d5c94cb | 9856 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
9857 | bfd_vma soffset; |
9858 | ||
1d5c94cb AM |
9859 | slo = (Elf32_External_Rela *) sreloc->contents; |
9860 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
9861 | soffset = (offset + input_section->output_section->vma |
9862 | + input_section->output_offset); | |
9863 | while (slo < shi) | |
9864 | { | |
1d5c94cb AM |
9865 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
9866 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
9867 | &outrel); | |
f8b44781 AM |
9868 | if (outrel.r_offset < soffset) |
9869 | slo = srel + 1; | |
9870 | else if (outrel.r_offset > soffset + 3) | |
9871 | shi = srel; | |
9872 | else | |
9873 | { | |
1d5c94cb | 9874 | if (srel + 1 != srelend) |
f8b44781 | 9875 | { |
1d5c94cb AM |
9876 | memmove (srel, srel + 1, |
9877 | (srelend - (srel + 1)) * sizeof (*srel)); | |
9878 | srel = srelend - 1; | |
f8b44781 AM |
9879 | } |
9880 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
9881 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
9882 | (bfd_byte *) srel); | |
f8b44781 AM |
9883 | break; |
9884 | } | |
9885 | } | |
9886 | } | |
668e22e5 AM |
9887 | } |
9888 | else | |
9889 | rel = NULL; | |
9890 | ||
5446cbdf AM |
9891 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
9892 | && (insn & 2) == 0 /* relative */) | |
9893 | { | |
9894 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9895 | ||
9896 | delta += offset - patch_off; | |
0e1862bb | 9897 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 9898 | delta = 0; |
0e1862bb | 9899 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
9900 | { |
9901 | enum elf_ppc_reloc_type r_type; | |
9902 | ||
9903 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9904 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9905 | insn |= BRANCH_PREDICT_BIT; | |
9906 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9907 | insn &= ~BRANCH_PREDICT_BIT; | |
9908 | else | |
9909 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9910 | ||
9911 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9912 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9913 | && delta + 0x8000 < 0x10000 | |
9914 | && (bfd_signed_vma) delta < 0) | |
9915 | insn ^= BRANCH_PREDICT_BIT; | |
9916 | } | |
5446cbdf AM |
9917 | if (delta + 0x8000 < 0x10000) |
9918 | { | |
9919 | bfd_put_32 (input_bfd, | |
9920 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9921 | contents + patch_off); | |
9922 | patch_off += 4; | |
9923 | bfd_put_32 (input_bfd, | |
9924 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9925 | contents + patch_off); | |
9926 | patch_off += 4; | |
9927 | } | |
9928 | else | |
9929 | { | |
668e22e5 AM |
9930 | if (rel != NULL) |
9931 | { | |
9932 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9933 | ||
9934 | relend[-1].r_offset += 8; | |
9935 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9936 | } | |
5446cbdf AM |
9937 | bfd_put_32 (input_bfd, |
9938 | (insn & ~0xfffc) | 8, | |
9939 | contents + patch_off); | |
9940 | patch_off += 4; | |
9941 | bfd_put_32 (input_bfd, | |
9942 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9943 | contents + patch_off); | |
9944 | patch_off += 4; | |
9945 | bfd_put_32 (input_bfd, | |
9946 | B | ((delta - 8) & 0x3fffffc), | |
9947 | contents + patch_off); | |
9948 | patch_off += 4; | |
9949 | } | |
9950 | } | |
9951 | else | |
9952 | { | |
9953 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9954 | patch_off += 4; | |
9955 | bfd_put_32 (input_bfd, | |
9956 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9957 | contents + patch_off); | |
9958 | patch_off += 4; | |
9959 | } | |
9960 | BFD_ASSERT (patch_off <= input_section->size); | |
9961 | relax_info->workaround_size = input_section->size - patch_off; | |
9962 | } | |
9963 | } | |
9964 | ||
252b5132 RH |
9965 | return ret; |
9966 | } | |
252b5132 | 9967 | \f |
25dbc73a AM |
9968 | /* Finish up dynamic symbol handling. We set the contents of various |
9969 | dynamic sections here. */ | |
c5fccbec | 9970 | |
b34976b6 | 9971 | static bfd_boolean |
25dbc73a AM |
9972 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
9973 | struct bfd_link_info *info, | |
9974 | struct elf_link_hash_entry *h, | |
9975 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 9976 | { |
25dbc73a | 9977 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
9978 | struct plt_entry *ent; |
9979 | bfd_boolean doneone; | |
e1a9cb8e | 9980 | |
25dbc73a AM |
9981 | #ifdef DEBUG |
9982 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9983 | h->root.root.string); | |
9984 | #endif | |
e1a9cb8e | 9985 | |
25dbc73a AM |
9986 | htab = ppc_elf_hash_table (info); |
9987 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 9988 | |
a6aa5195 AM |
9989 | doneone = FALSE; |
9990 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9991 | if (ent->plt.offset != (bfd_vma) -1) | |
9992 | { | |
9993 | if (!doneone) | |
9994 | { | |
9995 | Elf_Internal_Rela rela; | |
9996 | bfd_byte *loc; | |
9997 | bfd_vma reloc_index; | |
e1a9cb8e | 9998 | |
e054468f | 9999 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10000 | || !htab->elf.dynamic_sections_created |
10001 | || h->dynindx == -1) | |
9d8504b1 PB |
10002 | reloc_index = ent->plt.offset / 4; |
10003 | else | |
10004 | { | |
10005 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
10006 | / htab->plt_slot_size); | |
10007 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 10008 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
10009 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
10010 | } | |
10011 | ||
a6aa5195 AM |
10012 | /* This symbol has an entry in the procedure linkage table. |
10013 | Set it up. */ | |
e054468f | 10014 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
10015 | && htab->elf.dynamic_sections_created |
10016 | && h->dynindx != -1) | |
a6aa5195 | 10017 | { |
9d8504b1 PB |
10018 | bfd_vma got_offset; |
10019 | const bfd_vma *plt_entry; | |
5b914448 | 10020 | |
9d8504b1 PB |
10021 | /* The first three entries in .got.plt are reserved. */ |
10022 | got_offset = (reloc_index + 3) * 4; | |
10023 | ||
10024 | /* Use the right PLT. */ | |
0e1862bb | 10025 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
10026 | : ppc_elf_vxworks_plt_entry; |
10027 | ||
10028 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 10029 | if (bfd_link_pic (info)) |
9d8504b1 | 10030 | { |
9d8504b1 | 10031 | bfd_put_32 (output_bfd, |
e87d4038 | 10032 | plt_entry[0] | PPC_HA (got_offset), |
ce558b89 | 10033 | htab->elf.splt->contents + ent->plt.offset + 0); |
9d8504b1 | 10034 | bfd_put_32 (output_bfd, |
e87d4038 | 10035 | plt_entry[1] | PPC_LO (got_offset), |
ce558b89 | 10036 | htab->elf.splt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10037 | } |
10038 | else | |
10039 | { | |
e87d4038 | 10040 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 PB |
10041 | |
10042 | bfd_put_32 (output_bfd, | |
e87d4038 | 10043 | plt_entry[0] | PPC_HA (got_loc), |
ce558b89 | 10044 | htab->elf.splt->contents + ent->plt.offset + 0); |
9d8504b1 | 10045 | bfd_put_32 (output_bfd, |
e87d4038 | 10046 | plt_entry[1] | PPC_LO (got_loc), |
ce558b89 | 10047 | htab->elf.splt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10048 | } |
10049 | ||
10050 | bfd_put_32 (output_bfd, plt_entry[2], | |
ce558b89 | 10051 | htab->elf.splt->contents + ent->plt.offset + 8); |
9d8504b1 | 10052 | bfd_put_32 (output_bfd, plt_entry[3], |
ce558b89 | 10053 | htab->elf.splt->contents + ent->plt.offset + 12); |
9d8504b1 PB |
10054 | |
10055 | /* This instruction is an immediate load. The value loaded is | |
10056 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
10057 | start of the .rela.plt section. The value is stored in the | |
10058 | low-order 16 bits of the load instruction. */ | |
10059 | /* NOTE: It appears that this is now an index rather than a | |
10060 | prescaled offset. */ | |
5b914448 | 10061 | bfd_put_32 (output_bfd, |
9d8504b1 | 10062 | plt_entry[4] | reloc_index, |
ce558b89 | 10063 | htab->elf.splt->contents + ent->plt.offset + 16); |
9d8504b1 PB |
10064 | /* This instruction is a PC-relative branch whose target is |
10065 | the start of the PLT section. The address of this branch | |
10066 | instruction is 20 bytes beyond the start of this PLT entry. | |
10067 | The address is encoded in bits 6-29, inclusive. The value | |
10068 | stored is right-shifted by two bits, permitting a 26-bit | |
10069 | offset. */ | |
5b914448 AM |
10070 | bfd_put_32 (output_bfd, |
10071 | (plt_entry[5] | |
9d8504b1 | 10072 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
ce558b89 | 10073 | htab->elf.splt->contents + ent->plt.offset + 20); |
9d8504b1 | 10074 | bfd_put_32 (output_bfd, plt_entry[6], |
ce558b89 | 10075 | htab->elf.splt->contents + ent->plt.offset + 24); |
9d8504b1 | 10076 | bfd_put_32 (output_bfd, plt_entry[7], |
ce558b89 | 10077 | htab->elf.splt->contents + ent->plt.offset + 28); |
9d8504b1 PB |
10078 | |
10079 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 10080 | the address immediately after the "bctr" instruction |
9d8504b1 | 10081 | in this PLT entry. */ |
ce558b89 AM |
10082 | bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma |
10083 | + htab->elf.splt->output_offset | |
9d8504b1 | 10084 | + ent->plt.offset + 16), |
ce558b89 | 10085 | htab->elf.sgotplt->contents + got_offset); |
9d8504b1 | 10086 | |
0e1862bb | 10087 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
10088 | { |
10089 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
10090 | loc = htab->srelplt2->contents | |
10091 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
10092 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
10093 | * sizeof (Elf32_External_Rela)); | |
10094 | ||
10095 | /* Provide the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10096 | rela.r_offset = (htab->elf.splt->output_section->vma |
10097 | + htab->elf.splt->output_offset | |
9d8504b1 | 10098 | + ent->plt.offset + 2); |
636ce3f5 | 10099 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10100 | R_PPC_ADDR16_HA); |
10101 | rela.r_addend = got_offset; | |
10102 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10103 | loc += sizeof (Elf32_External_Rela); | |
10104 | ||
10105 | /* Provide the @l relocation for the second instruction. */ | |
ce558b89 AM |
10106 | rela.r_offset = (htab->elf.splt->output_section->vma |
10107 | + htab->elf.splt->output_offset | |
9d8504b1 | 10108 | + ent->plt.offset + 6); |
636ce3f5 | 10109 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10110 | R_PPC_ADDR16_LO); |
10111 | rela.r_addend = got_offset; | |
10112 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10113 | loc += sizeof (Elf32_External_Rela); | |
10114 | ||
10115 | /* Provide a relocation for the GOT entry corresponding to this | |
10116 | PLT slot. Point it at the middle of the .plt entry. */ | |
ce558b89 AM |
10117 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10118 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 10119 | + got_offset); |
7325306f | 10120 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
10121 | R_PPC_ADDR32); |
10122 | rela.r_addend = ent->plt.offset + 16; | |
10123 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10124 | } | |
10125 | ||
10126 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
10127 | In particular, the offset for the relocation is not the | |
10128 | address of the PLT entry for this function, as specified | |
10129 | by the ABI. Instead, the offset is set to the address of | |
10130 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
ce558b89 AM |
10131 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10132 | + htab->elf.sgotplt->output_offset | |
9d8504b1 PB |
10133 | + got_offset); |
10134 | ||
a6aa5195 AM |
10135 | } |
10136 | else | |
10137 | { | |
ce558b89 | 10138 | asection *splt = htab->elf.splt; |
25f23106 AM |
10139 | if (!htab->elf.dynamic_sections_created |
10140 | || h->dynindx == -1) | |
ce558b89 | 10141 | splt = htab->elf.iplt; |
e054468f AM |
10142 | |
10143 | rela.r_offset = (splt->output_section->vma | |
10144 | + splt->output_offset | |
9d8504b1 | 10145 | + ent->plt.offset); |
e054468f | 10146 | if (htab->plt_type == PLT_OLD |
25f23106 AM |
10147 | || !htab->elf.dynamic_sections_created |
10148 | || h->dynindx == -1) | |
9d8504b1 PB |
10149 | { |
10150 | /* We don't need to fill in the .plt. The ppc dynamic | |
10151 | linker will fill it in. */ | |
10152 | } | |
10153 | else | |
10154 | { | |
10155 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
10156 | + htab->glink->output_section->vma | |
10157 | + htab->glink->output_offset); | |
10158 | bfd_put_32 (output_bfd, val, | |
e054468f | 10159 | splt->contents + ent->plt.offset); |
9d8504b1 | 10160 | } |
a6aa5195 | 10161 | } |
e1a9cb8e | 10162 | |
a6aa5195 | 10163 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 | 10164 | rela.r_addend = 0; |
e054468f AM |
10165 | if (!htab->elf.dynamic_sections_created |
10166 | || h->dynindx == -1) | |
10167 | { | |
10168 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
10169 | && h->def_regular | |
10170 | && (h->root.type == bfd_link_hash_defined | |
10171 | || h->root.type == bfd_link_hash_defweak)); | |
10172 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
10173 | rela.r_addend = SYM_VAL (h); | |
10174 | } | |
10175 | else | |
10176 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
e1a9cb8e | 10177 | |
25f23106 AM |
10178 | if (!htab->elf.dynamic_sections_created |
10179 | || h->dynindx == -1) | |
82e66161 AM |
10180 | { |
10181 | loc = (htab->elf.irelplt->contents | |
10182 | + (htab->elf.irelplt->reloc_count++ | |
10183 | * sizeof (Elf32_External_Rela))); | |
10184 | htab->local_ifunc_resolver = 1; | |
10185 | } | |
e054468f | 10186 | else |
82e66161 AM |
10187 | { |
10188 | loc = (htab->elf.srelplt->contents | |
10189 | + reloc_index * sizeof (Elf32_External_Rela)); | |
10190 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
10191 | htab->maybe_local_ifunc_resolver = 1; | |
10192 | } | |
a6aa5195 | 10193 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
e1a9cb8e | 10194 | |
a6aa5195 AM |
10195 | if (!h->def_regular) |
10196 | { | |
0eb4a168 AM |
10197 | /* Mark the symbol as undefined, rather than as |
10198 | defined in the .plt section. Leave the value if | |
10199 | there were any relocations where pointer equality | |
10200 | matters (this is a clue for the dynamic linker, to | |
10201 | make function pointer comparisons work between an | |
10202 | application and shared library), otherwise set it | |
10203 | to zero. */ | |
a6aa5195 | 10204 | sym->st_shndx = SHN_UNDEF; |
0eb4a168 | 10205 | if (!h->pointer_equality_needed) |
a6aa5195 | 10206 | sym->st_value = 0; |
0eb4a168 AM |
10207 | else if (!h->ref_regular_nonweak) |
10208 | { | |
625af618 AM |
10209 | /* This breaks function pointer comparisons, but |
10210 | that is better than breaking tests for a NULL | |
0eb4a168 | 10211 | function pointer. */ |
0eb4a168 AM |
10212 | sym->st_value = 0; |
10213 | } | |
a6aa5195 | 10214 | } |
de972ffa | 10215 | else if (h->type == STT_GNU_IFUNC |
0e1862bb | 10216 | && !bfd_link_pic (info)) |
de972ffa AM |
10217 | { |
10218 | /* Set the value of ifunc symbols in a non-pie | |
10219 | executable to the glink entry. This is to avoid | |
10220 | text relocations. We can't do this for ifunc in | |
10221 | allocate_dynrelocs, as we do for normal dynamic | |
10222 | function symbols with plt entries, because we need | |
10223 | to keep the original value around for the ifunc | |
10224 | relocation. */ | |
10225 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
10226 | (output_bfd, htab->glink->output_section)); | |
5b914448 AM |
10227 | sym->st_value = (ent->glink_offset |
10228 | + htab->glink->output_offset | |
de972ffa AM |
10229 | + htab->glink->output_section->vma); |
10230 | } | |
a6aa5195 AM |
10231 | doneone = TRUE; |
10232 | } | |
e1a9cb8e | 10233 | |
e054468f | 10234 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10235 | || !htab->elf.dynamic_sections_created |
10236 | || h->dynindx == -1) | |
a6aa5195 | 10237 | { |
a7f2871e | 10238 | unsigned char *p; |
ce558b89 | 10239 | asection *splt = htab->elf.splt; |
9e390558 | 10240 | |
25f23106 AM |
10241 | if (!htab->elf.dynamic_sections_created |
10242 | || h->dynindx == -1) | |
ce558b89 | 10243 | splt = htab->elf.iplt; |
e1a9cb8e | 10244 | |
a7f2871e | 10245 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
9e390558 | 10246 | write_glink_stub (h, ent, splt, p, info); |
e1a9cb8e | 10247 | |
0e1862bb | 10248 | if (!bfd_link_pic (info)) |
e054468f AM |
10249 | /* We only need one non-PIC glink stub. */ |
10250 | break; | |
a6aa5195 AM |
10251 | } |
10252 | else | |
10253 | break; | |
10254 | } | |
e1a9cb8e | 10255 | |
25dbc73a AM |
10256 | if (h->needs_copy) |
10257 | { | |
10258 | asection *s; | |
10259 | Elf_Internal_Rela rela; | |
10260 | bfd_byte *loc; | |
e1a9cb8e | 10261 | |
25dbc73a | 10262 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 10263 | |
25dbc73a AM |
10264 | #ifdef DEBUG |
10265 | fprintf (stderr, ", copy"); | |
10266 | #endif | |
e1a9cb8e | 10267 | |
25dbc73a | 10268 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 10269 | |
4dc4a9a5 | 10270 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 10271 | s = htab->relsbss; |
afbf7e8e | 10272 | else if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f | 10273 | s = htab->elf.sreldynrelro; |
25dbc73a | 10274 | else |
9d19e4fd | 10275 | s = htab->elf.srelbss; |
25dbc73a | 10276 | BFD_ASSERT (s != NULL); |
e1a9cb8e | 10277 | |
e87d4038 | 10278 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
10279 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
10280 | rela.r_addend = 0; | |
10281 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
10282 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10283 | } | |
e1a9cb8e | 10284 | |
25dbc73a AM |
10285 | #ifdef DEBUG |
10286 | fprintf (stderr, "\n"); | |
10287 | #endif | |
e1a9cb8e | 10288 | |
25dbc73a AM |
10289 | return TRUE; |
10290 | } | |
10291 | \f | |
10292 | static enum elf_reloc_type_class | |
7e612e98 AM |
10293 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
10294 | const asection *rel_sec, | |
10295 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 10296 | { |
7e612e98 AM |
10297 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
10298 | ||
ce558b89 | 10299 | if (rel_sec == htab->elf.irelplt) |
7e612e98 AM |
10300 | return reloc_class_ifunc; |
10301 | ||
25dbc73a AM |
10302 | switch (ELF32_R_TYPE (rela->r_info)) |
10303 | { | |
10304 | case R_PPC_RELATIVE: | |
10305 | return reloc_class_relative; | |
25dbc73a AM |
10306 | case R_PPC_JMP_SLOT: |
10307 | return reloc_class_plt; | |
10308 | case R_PPC_COPY: | |
10309 | return reloc_class_copy; | |
10310 | default: | |
10311 | return reloc_class_normal; | |
10312 | } | |
e1a9cb8e | 10313 | } |
25dbc73a AM |
10314 | \f |
10315 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 10316 | |
25dbc73a AM |
10317 | static bfd_boolean |
10318 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
10319 | struct bfd_link_info *info) | |
e1a9cb8e | 10320 | { |
25dbc73a AM |
10321 | asection *sdyn; |
10322 | struct ppc_elf_link_hash_table *htab; | |
1fe44d79 | 10323 | bfd_vma got; |
e87d4038 AM |
10324 | bfd *dynobj; |
10325 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 10326 | |
25dbc73a AM |
10327 | #ifdef DEBUG |
10328 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
10329 | #endif | |
6b0817e5 | 10330 | |
25dbc73a | 10331 | htab = ppc_elf_hash_table (info); |
ce558b89 | 10332 | dynobj = htab->elf.dynobj; |
3d4d4302 | 10333 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
e1a9cb8e | 10334 | |
1fe44d79 AM |
10335 | got = 0; |
10336 | if (htab->elf.hgot != NULL) | |
e87d4038 | 10337 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 10338 | |
25dbc73a | 10339 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 10340 | { |
25dbc73a | 10341 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 10342 | |
ce558b89 | 10343 | BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL); |
86bbe32f | 10344 | |
25dbc73a AM |
10345 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
10346 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
10347 | for (; dyncon < dynconend; dyncon++) | |
10348 | { | |
10349 | Elf_Internal_Dyn dyn; | |
10350 | asection *s; | |
e1a9cb8e | 10351 | |
9d8504b1 | 10352 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 10353 | |
25dbc73a AM |
10354 | switch (dyn.d_tag) |
10355 | { | |
10356 | case DT_PLTGOT: | |
9d8504b1 | 10357 | if (htab->is_vxworks) |
ce558b89 | 10358 | s = htab->elf.sgotplt; |
9d8504b1 | 10359 | else |
ce558b89 | 10360 | s = htab->elf.splt; |
25dbc73a AM |
10361 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10362 | break; | |
86bbe32f | 10363 | |
25dbc73a | 10364 | case DT_PLTRELSZ: |
ce558b89 | 10365 | dyn.d_un.d_val = htab->elf.srelplt->size; |
25dbc73a | 10366 | break; |
e1a9cb8e | 10367 | |
25dbc73a | 10368 | case DT_JMPREL: |
ce558b89 | 10369 | s = htab->elf.srelplt; |
25dbc73a AM |
10370 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10371 | break; | |
2f89ff8d | 10372 | |
1fe44d79 AM |
10373 | case DT_PPC_GOT: |
10374 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
10375 | break; |
10376 | ||
82e66161 AM |
10377 | case DT_TEXTREL: |
10378 | if (htab->local_ifunc_resolver) | |
10379 | info->callbacks->einfo | |
10380 | (_("%X%P: text relocations and GNU indirect " | |
10381 | "functions will result in a segfault at runtime\n")); | |
10382 | else if (htab->maybe_local_ifunc_resolver) | |
10383 | info->callbacks->einfo | |
10384 | (_("%P: warning: text relocations and GNU indirect " | |
10385 | "functions may result in a segfault at runtime\n")); | |
10386 | continue; | |
10387 | ||
25dbc73a | 10388 | default: |
7a2b07ff NS |
10389 | if (htab->is_vxworks |
10390 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10391 | break; | |
25dbc73a AM |
10392 | continue; |
10393 | } | |
4c45e5c9 | 10394 | |
25dbc73a AM |
10395 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
10396 | } | |
10397 | } | |
4c45e5c9 | 10398 | |
6528b6eb AM |
10399 | if (htab->elf.sgot != NULL |
10400 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
25dbc73a | 10401 | { |
ce558b89 AM |
10402 | if (htab->elf.hgot->root.u.def.section == htab->elf.sgot |
10403 | || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt) | |
e87d4038 | 10404 | { |
e79f5955 | 10405 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 10406 | |
e87d4038 AM |
10407 | p += htab->elf.hgot->root.u.def.value; |
10408 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
10409 | { |
10410 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
10411 | so that a function can easily find the address of | |
10412 | _GLOBAL_OFFSET_TABLE_. */ | |
10413 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
10414 | < htab->elf.hgot->root.u.def.section->size); | |
10415 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
10416 | } | |
3b36f7e6 | 10417 | |
e87d4038 | 10418 | if (sdyn != NULL) |
e79f5955 AM |
10419 | { |
10420 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
10421 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
10422 | < htab->elf.hgot->root.u.def.section->size); | |
10423 | bfd_put_32 (output_bfd, val, p); | |
10424 | } | |
e87d4038 AM |
10425 | } |
10426 | else | |
10427 | { | |
695344c0 | 10428 | /* xgettext:c-format */ |
8de848d8 | 10429 | info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"), |
25f53a85 | 10430 | htab->elf.hgot->root.root.string, |
ce558b89 AM |
10431 | (htab->elf.sgotplt != NULL |
10432 | ? htab->elf.sgotplt->name | |
10433 | : htab->elf.sgot->name)); | |
e87d4038 AM |
10434 | bfd_set_error (bfd_error_bad_value); |
10435 | ret = FALSE; | |
10436 | } | |
25dbc73a | 10437 | |
ce558b89 | 10438 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; |
25dbc73a AM |
10439 | } |
10440 | ||
9d8504b1 | 10441 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
6528b6eb AM |
10442 | if (htab->is_vxworks |
10443 | && htab->elf.splt != NULL | |
10444 | && htab->elf.splt->size != 0 | |
10445 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
9d8504b1 | 10446 | { |
6528b6eb | 10447 | asection *splt = htab->elf.splt; |
9d8504b1 | 10448 | /* Use the right PLT. */ |
0e1862bb | 10449 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
10450 | ? ppc_elf_vxworks_pic_plt0_entry |
10451 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 10452 | |
0e1862bb | 10453 | if (!bfd_link_pic (info)) |
9d8504b1 | 10454 | { |
e87d4038 | 10455 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10456 | |
e87d4038 | 10457 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10458 | splt->contents + 0); |
e87d4038 | 10459 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10460 | splt->contents + 4); |
10461 | } | |
10462 | else | |
10463 | { | |
10464 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10465 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10466 | } | |
10467 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10468 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10469 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10470 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10471 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10472 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10473 | ||
0e1862bb | 10474 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
10475 | { |
10476 | Elf_Internal_Rela rela; | |
10477 | bfd_byte *loc; | |
10478 | ||
10479 | loc = htab->srelplt2->contents; | |
10480 | ||
10481 | /* Output the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10482 | rela.r_offset = (htab->elf.splt->output_section->vma |
10483 | + htab->elf.splt->output_offset | |
9d8504b1 | 10484 | + 2); |
636ce3f5 | 10485 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10486 | rela.r_addend = 0; |
10487 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10488 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10489 | |
9d8504b1 | 10490 | /* Output the @l relocation for the second instruction. */ |
ce558b89 AM |
10491 | rela.r_offset = (htab->elf.splt->output_section->vma |
10492 | + htab->elf.splt->output_offset | |
9d8504b1 | 10493 | + 6); |
636ce3f5 | 10494 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10495 | rela.r_addend = 0; |
10496 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10497 | loc += sizeof (Elf32_External_Rela); | |
10498 | ||
10499 | /* Fix up the remaining relocations. They may have the wrong | |
10500 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10501 | in which symbols were output. */ | |
10502 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10503 | { | |
10504 | Elf_Internal_Rela rel; | |
10505 | ||
10506 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10507 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10508 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10509 | loc += sizeof (Elf32_External_Rela); | |
10510 | ||
10511 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10512 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10513 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10514 | loc += sizeof (Elf32_External_Rela); | |
10515 | ||
10516 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10517 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10518 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10519 | loc += sizeof (Elf32_External_Rela); | |
10520 | } | |
10521 | } | |
10522 | } | |
10523 | ||
e054468f AM |
10524 | if (htab->glink != NULL |
10525 | && htab->glink->contents != NULL | |
10526 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10527 | { |
10528 | unsigned char *p; | |
10529 | unsigned char *endp; | |
a6aa5195 | 10530 | bfd_vma res0; |
a6aa5195 AM |
10531 | |
10532 | /* | |
10533 | * PIC glink code is the following: | |
10534 | * | |
10535 | * # ith PLT code stub. | |
10536 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10537 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10538 | * mtctr 11 | |
10539 | * bctr | |
10540 | * | |
10541 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10542 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10543 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10544 | * res_0: b PLTresolve | |
10545 | * res_1: b PLTresolve | |
10546 | * . | |
10547 | * # Some number of entries towards the end can be nops | |
10548 | * res_n_m3: nop | |
10549 | * res_n_m2: nop | |
10550 | * res_n_m1: | |
10551 | * | |
10552 | * PLTresolve: | |
10553 | * addis 11,11,(1f-res_0)@ha | |
10554 | * mflr 0 | |
10555 | * bcl 20,31,1f | |
10556 | * 1: addi 11,11,(1b-res_0)@l | |
10557 | * mflr 12 | |
10558 | * mtlr 0 | |
07d6d2b8 | 10559 | * sub 11,11,12 # r11 = index * 4 |
a6aa5195 | 10560 | * addis 12,12,(got+4-1b)@ha |
07d6d2b8 AM |
10561 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve |
10562 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
a6aa5195 AM |
10563 | * mtctr 0 |
10564 | * add 0,11,11 | |
07d6d2b8 | 10565 | * add 11,0,11 # r11 = index * 12 = reloc offset. |
a6aa5195 | 10566 | * bctr |
9e390558 | 10567 | * |
176a0d42 AM |
10568 | * Non-PIC glink code is a little simpler. |
10569 | * | |
10570 | * # ith PLT code stub. | |
10571 | * lis 11,(plt+(i-1)*4)@ha | |
10572 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10573 | * mtctr 11 | |
10574 | * bctr | |
10575 | * | |
10576 | * The branch table is the same, then comes | |
10577 | * | |
10578 | * PLTresolve: | |
10579 | * lis 12,(got+4)@ha | |
10580 | * addis 11,11,(-res_0)@ha | |
07d6d2b8 AM |
10581 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve |
10582 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
176a0d42 AM |
10583 | * mtctr 0 |
10584 | * add 0,11,11 | |
07d6d2b8 AM |
10585 | * lwz 12,(got+8)@l(12) # got[2] contains the map address |
10586 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
176a0d42 AM |
10587 | * bctr |
10588 | */ | |
7e8aeb9a | 10589 | |
a6aa5195 | 10590 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10591 | and perhaps some padding. */ |
a6aa5195 AM |
10592 | p = htab->glink->contents; |
10593 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10594 | endp = htab->glink->contents; |
10595 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10596 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10597 | { |
10598 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10599 | p += 4; | |
10600 | } | |
10601 | while (p < endp) | |
10602 | { | |
10603 | bfd_put_32 (output_bfd, NOP, p); | |
10604 | p += 4; | |
10605 | } | |
10606 | ||
7e8aeb9a | 10607 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10608 | + htab->glink->output_section->vma |
10609 | + htab->glink->output_offset); | |
10610 | ||
da3a2088 AM |
10611 | if (htab->params->ppc476_workaround) |
10612 | { | |
10613 | /* Ensure that a call stub at the end of a page doesn't | |
10614 | result in prefetch over the end of the page into the | |
10615 | glink branch table. */ | |
10616 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10617 | bfd_vma page_addr; | |
10618 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10619 | + htab->glink->output_offset); | |
10620 | ||
10621 | for (page_addr = res0 & -pagesize; | |
10622 | page_addr > glink_start; | |
10623 | page_addr -= pagesize) | |
10624 | { | |
10625 | /* We have a plt call stub that may need fixing. */ | |
10626 | bfd_byte *loc; | |
10627 | unsigned int insn; | |
10628 | ||
10629 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10630 | insn = bfd_get_32 (output_bfd, loc); | |
10631 | if (insn == BCTR) | |
10632 | { | |
10633 | /* By alignment, we know that there must be at least | |
10634 | one other call stub before this one. */ | |
10635 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10636 | if (insn == BCTR) | |
10637 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10638 | else | |
10639 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10640 | } | |
10641 | } | |
10642 | } | |
10643 | ||
86b9da88 | 10644 | /* Last comes the PLTresolve stub. */ |
9e390558 | 10645 | endp = p + GLINK_PLTRESOLVE; |
0e1862bb | 10646 | if (bfd_link_pic (info)) |
7e8aeb9a | 10647 | { |
a6aa5195 | 10648 | bfd_vma bcl; |
d7128ce4 | 10649 | |
a6aa5195 AM |
10650 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 |
10651 | + htab->glink->output_section->vma | |
10652 | + htab->glink->output_offset); | |
10653 | ||
9e390558 AM |
10654 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p); |
10655 | p += 4; | |
10656 | bfd_put_32 (output_bfd, MFLR_0, p); | |
10657 | p += 4; | |
10658 | bfd_put_32 (output_bfd, BCL_20_31, p); | |
10659 | p += 4; | |
10660 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p); | |
10661 | p += 4; | |
10662 | bfd_put_32 (output_bfd, MFLR_12, p); | |
10663 | p += 4; | |
10664 | bfd_put_32 (output_bfd, MTLR_0, p); | |
10665 | p += 4; | |
10666 | bfd_put_32 (output_bfd, SUB_11_11_12, p); | |
10667 | p += 4; | |
10668 | bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p); | |
10669 | p += 4; | |
a6aa5195 AM |
10670 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) |
10671 | { | |
9e390558 AM |
10672 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p); |
10673 | p += 4; | |
10674 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p); | |
10675 | p += 4; | |
a6aa5195 AM |
10676 | } |
10677 | else | |
10678 | { | |
9e390558 AM |
10679 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p); |
10680 | p += 4; | |
10681 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10682 | p += 4; | |
a6aa5195 | 10683 | } |
9e390558 AM |
10684 | bfd_put_32 (output_bfd, MTCTR_0, p); |
10685 | p += 4; | |
10686 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
7e8aeb9a AM |
10687 | } |
10688 | else | |
d7128ce4 | 10689 | { |
9e390558 AM |
10690 | bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p); |
10691 | p += 4; | |
10692 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p); | |
10693 | p += 4; | |
a6aa5195 | 10694 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) |
9e390558 | 10695 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p); |
a6aa5195 | 10696 | else |
9e390558 AM |
10697 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p); |
10698 | p += 4; | |
10699 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p); | |
10700 | p += 4; | |
10701 | bfd_put_32 (output_bfd, MTCTR_0, p); | |
10702 | p += 4; | |
10703 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
10704 | p += 4; | |
10705 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10706 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p); | |
10707 | else | |
10708 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10709 | } | |
10710 | p += 4; | |
10711 | bfd_put_32 (output_bfd, ADD_11_0_11, p); | |
10712 | p += 4; | |
1be5d8d3 | 10713 | p = output_bctr (htab, output_bfd, p); |
9e390558 AM |
10714 | while (p < endp) |
10715 | { | |
10716 | bfd_put_32 (output_bfd, | |
10717 | htab->params->ppc476_workaround ? BA : NOP, p); | |
10718 | p += 4; | |
d7128ce4 | 10719 | } |
9e390558 | 10720 | BFD_ASSERT (p == endp); |
d7128ce4 AM |
10721 | } |
10722 | ||
6177242a AM |
10723 | if (htab->glink_eh_frame != NULL |
10724 | && htab->glink_eh_frame->contents != NULL) | |
10725 | { | |
10726 | unsigned char *p = htab->glink_eh_frame->contents; | |
10727 | bfd_vma val; | |
10728 | ||
6177242a AM |
10729 | p += sizeof (glink_eh_frame_cie); |
10730 | /* FDE length. */ | |
6177242a AM |
10731 | p += 4; |
10732 | /* CIE pointer. */ | |
6177242a AM |
10733 | p += 4; |
10734 | /* Offset to .glink. */ | |
10735 | val = (htab->glink->output_section->vma | |
10736 | + htab->glink->output_offset); | |
10737 | val -= (htab->glink_eh_frame->output_section->vma | |
10738 | + htab->glink_eh_frame->output_offset); | |
10739 | val -= p - htab->glink_eh_frame->contents; | |
10740 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10741 | |
dbaa2011 | 10742 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10743 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10744 | htab->glink_eh_frame, | |
10745 | htab->glink_eh_frame->contents)) | |
10746 | return FALSE; | |
10747 | } | |
10748 | ||
e87d4038 | 10749 | return ret; |
25dbc73a | 10750 | } |
e1a9cb8e | 10751 | \f |
6d00b590 | 10752 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10753 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10754 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10755 | #define TARGET_BIG_NAME "elf32-powerpc" |
10756 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10757 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 | 10758 | #define ELF_MACHINE_CODE EM_PPC |
d0facd1b NC |
10759 | #ifdef __QNXTARGET__ |
10760 | #define ELF_MAXPAGESIZE 0x1000 | |
04c6a44c | 10761 | #define ELF_COMMONPAGESIZE 0x1000 |
d0facd1b | 10762 | #else |
252b5132 | 10763 | #define ELF_MAXPAGESIZE 0x10000 |
04c6a44c | 10764 | #define ELF_COMMONPAGESIZE 0x10000 |
d0facd1b | 10765 | #endif |
b1342370 | 10766 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
10767 | #define elf_info_to_howto ppc_elf_info_to_howto |
10768 | ||
10769 | #ifdef EM_CYGNUS_POWERPC | |
10770 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10771 | #endif | |
10772 | ||
10773 | #ifdef EM_PPC_OLD | |
10774 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10775 | #endif | |
10776 | ||
10777 | #define elf_backend_plt_not_loaded 1 | |
5474d94f | 10778 | #define elf_backend_want_dynrelro 1 |
252b5132 | 10779 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10780 | #define elf_backend_can_refcount 1 |
b491616a | 10781 | #define elf_backend_rela_normal 1 |
53291d1f | 10782 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10783 | |
43c40ab2 | 10784 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10785 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10786 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10787 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10788 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10789 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10790 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10791 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10792 | |
feee612b | 10793 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 | 10794 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
252b5132 RH |
10795 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
10796 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10797 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10798 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
c0e331c7 | 10799 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
7fce784e | 10800 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10801 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10802 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10803 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10804 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10805 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10806 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10807 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10808 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
954b63d4 | 10809 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10810 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10811 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10812 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10813 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10814 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10815 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10816 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10817 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10818 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10819 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10820 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10821 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
252b5132 RH |
10822 | |
10823 | #include "elf32-target.h" | |
9d8504b1 | 10824 | |
7b8e7dad AM |
10825 | /* FreeBSD 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_fbsd_vec |
7b8e7dad AM |
10832 | #undef TARGET_BIG_NAME |
10833 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10834 | ||
10835 | #undef ELF_OSABI | |
10836 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10837 | ||
10838 | #undef elf32_bed | |
10839 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10840 | ||
10841 | #include "elf32-target.h" | |
10842 | ||
9d8504b1 PB |
10843 | /* VxWorks Target */ |
10844 | ||
10845 | #undef TARGET_LITTLE_SYM | |
10846 | #undef TARGET_LITTLE_NAME | |
10847 | ||
10848 | #undef TARGET_BIG_SYM | |
6d00b590 | 10849 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10850 | #undef TARGET_BIG_NAME |
10851 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10852 | ||
7b8e7dad AM |
10853 | #undef ELF_OSABI |
10854 | ||
d5e3d971 PB |
10855 | /* VxWorks uses the elf default section flags for .plt. */ |
10856 | static const struct bfd_elf_special_section * | |
4aef7643 | 10857 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec) |
9d8504b1 | 10858 | { |
d5e3d971 PB |
10859 | if (sec->name == NULL) |
10860 | return NULL; | |
10861 | ||
10862 | if (strcmp (sec->name, ".plt") == 0) | |
10863 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10864 | ||
10865 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10866 | } | |
9d8504b1 PB |
10867 | |
10868 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10869 | appropriately for VxWorks. */ | |
10870 | static struct bfd_link_hash_table * | |
10871 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10872 | { | |
10873 | struct bfd_link_hash_table *ret; | |
10874 | ||
10875 | ret = ppc_elf_link_hash_table_create (abfd); | |
10876 | if (ret) | |
10877 | { | |
10878 | struct ppc_elf_link_hash_table *htab | |
954b63d4 | 10879 | = (struct ppc_elf_link_hash_table *)ret; |
9d8504b1 | 10880 | htab->is_vxworks = 1; |
4a3dc543 | 10881 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10882 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10883 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10884 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10885 | } | |
10886 | return ret; | |
10887 | } | |
10888 | ||
10889 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10890 | static bfd_boolean | |
10891 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10892 | struct bfd_link_info *info, | |
10893 | Elf_Internal_Sym *sym, | |
4aef7643 AM |
10894 | const char **namep, |
10895 | flagword *flagsp, | |
9d8504b1 PB |
10896 | asection **secp, |
10897 | bfd_vma *valp) | |
10898 | { | |
4aef7643 AM |
10899 | if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, |
10900 | valp)) | |
9d8504b1 PB |
10901 | return FALSE; |
10902 | ||
4aef7643 | 10903 | return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp); |
9d8504b1 PB |
10904 | } |
10905 | ||
9d8504b1 PB |
10906 | static void |
10907 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
10908 | { | |
4aef7643 AM |
10909 | ppc_elf_final_write_processing (abfd, linker); |
10910 | elf_vxworks_final_write_processing (abfd, linker); | |
9d8504b1 PB |
10911 | } |
10912 | ||
10913 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10914 | define it. */ | |
10915 | #undef elf_backend_want_plt_sym | |
10916 | #define elf_backend_want_plt_sym 1 | |
10917 | #undef elf_backend_want_got_plt | |
10918 | #define elf_backend_want_got_plt 1 | |
10919 | #undef elf_backend_got_symbol_offset | |
10920 | #define elf_backend_got_symbol_offset 0 | |
10921 | #undef elf_backend_plt_not_loaded | |
10922 | #define elf_backend_plt_not_loaded 0 | |
10923 | #undef elf_backend_plt_readonly | |
10924 | #define elf_backend_plt_readonly 1 | |
10925 | #undef elf_backend_got_header_size | |
10926 | #define elf_backend_got_header_size 12 | |
64f52338 AM |
10927 | #undef elf_backend_dtrel_excludes_plt |
10928 | #define elf_backend_dtrel_excludes_plt 1 | |
9d8504b1 | 10929 | |
468392fb AM |
10930 | #undef bfd_elf32_get_synthetic_symtab |
10931 | ||
9d8504b1 PB |
10932 | #undef bfd_elf32_bfd_link_hash_table_create |
10933 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10934 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10935 | #undef elf_backend_add_symbol_hook |
10936 | #define elf_backend_add_symbol_hook \ | |
10937 | ppc_elf_vxworks_add_symbol_hook | |
10938 | #undef elf_backend_link_output_symbol_hook | |
10939 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10940 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10941 | #undef elf_backend_final_write_processing |
10942 | #define elf_backend_final_write_processing \ | |
10943 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10944 | #undef elf_backend_get_sec_type_attr |
10945 | #define elf_backend_get_sec_type_attr \ | |
10946 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10947 | #undef elf_backend_emit_relocs |
10948 | #define elf_backend_emit_relocs \ | |
10949 | elf_vxworks_emit_relocs | |
10950 | ||
10951 | #undef elf32_bed | |
10952 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 10953 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
10954 | |
10955 | #include "elf32-target.h" |