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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
2571583a | 2 | Copyright (C) 1994-2017 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 |
d7128ce4 | 71 | #define GLINK_ENTRY_SIZE 4*4 |
a7f2871e | 72 | #define TLS_GET_ADDR_GLINK_SIZE 12*4 |
d7128ce4 | 73 | |
9d8504b1 PB |
74 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
75 | ||
76 | /* The standard VxWorks PLT entry. */ | |
77 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
78 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
79 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
80 | { | |
07d6d2b8 AM |
81 | 0x3d800000, /* lis r12,0 */ |
82 | 0x818c0000, /* lwz r12,0(r12) */ | |
83 | 0x7d8903a6, /* mtctr r12 */ | |
84 | 0x4e800420, /* bctr */ | |
85 | 0x39600000, /* li r11,0 */ | |
86 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
87 | 0x60000000, /* nop */ | |
88 | 0x60000000, /* nop */ | |
9d8504b1 PB |
89 | }; |
90 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
91 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
92 | { | |
93 | 0x3d9e0000, /* addis r12,r30,0 */ | |
94 | 0x818c0000, /* lwz r12,0(r12) */ | |
95 | 0x7d8903a6, /* mtctr r12 */ | |
96 | 0x4e800420, /* bctr */ | |
97 | 0x39600000, /* li r11,0 */ | |
98 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
99 | 0x60000000, /* nop */ | |
100 | 0x60000000, /* nop */ | |
101 | }; | |
102 | ||
103 | /* The initial VxWorks PLT entry. */ | |
104 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
105 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
106 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
107 | { | |
07d6d2b8 AM |
108 | 0x3d800000, /* lis r12,0 */ |
109 | 0x398c0000, /* addi r12,r12,0 */ | |
110 | 0x800c0008, /* lwz r0,8(r12) */ | |
111 | 0x7c0903a6, /* mtctr r0 */ | |
112 | 0x818c0004, /* lwz r12,4(r12) */ | |
113 | 0x4e800420, /* bctr */ | |
114 | 0x60000000, /* nop */ | |
115 | 0x60000000, /* nop */ | |
9d8504b1 PB |
116 | }; |
117 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
118 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
119 | { | |
120 | 0x819e0008, /* lwz r12,8(r30) */ | |
07d6d2b8 | 121 | 0x7d8903a6, /* mtctr r12 */ |
9d8504b1 | 122 | 0x819e0004, /* lwz r12,4(r30) */ |
07d6d2b8 AM |
123 | 0x4e800420, /* bctr */ |
124 | 0x60000000, /* nop */ | |
125 | 0x60000000, /* nop */ | |
126 | 0x60000000, /* nop */ | |
127 | 0x60000000, /* nop */ | |
9d8504b1 PB |
128 | }; |
129 | ||
130 | /* For executables, we have some additional relocations in | |
131 | .rela.plt.unloaded, for the kernel loader. */ | |
132 | ||
133 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
134 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
135 | /* The number of relocations in the PLTResolve slot. */ | |
136 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
de194d85 | 137 | /* The number of relocations in the PLTResolve slot when creating |
9d8504b1 PB |
138 | a shared library. */ |
139 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
140 | ||
d7128ce4 | 141 | /* Some instructions. */ |
d7128ce4 | 142 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
143 | #define ADDIS_11_30 0x3d7e0000 |
144 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 145 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 146 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 147 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 148 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 | 149 | #define B 0x48000000 |
da3a2088 | 150 | #define BA 0x48000002 |
a6aa5195 | 151 | #define BCL_20_31 0x429f0005 |
d7128ce4 | 152 | #define BCTR 0x4e800420 |
a7f2871e AM |
153 | #define BEQLR 0x4d820020 |
154 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
155 | #define LIS_11 0x3d600000 |
156 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
157 | #define LWZU_0_12 0x840c0000 |
158 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 159 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
160 | #define LWZ_11_11 0x816b0000 |
161 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 162 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 163 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
164 | #define MR_0_3 0x7c601b78 |
165 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
166 | #define MFLR_0 0x7c0802a6 |
167 | #define MFLR_12 0x7d8802a6 | |
168 | #define MTCTR_0 0x7c0903a6 | |
169 | #define MTCTR_11 0x7d6903a6 | |
170 | #define MTLR_0 0x7c0803a6 | |
171 | #define NOP 0x60000000 | |
172 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
173 | |
174 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
175 | #define TP_OFFSET 0x7000 | |
176 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
177 | |
178 | /* The value of a defined global symbol. */ | |
179 | #define SYM_VAL(SYM) \ | |
180 | ((SYM)->root.u.def.section->output_section->vma \ | |
181 | + (SYM)->root.u.def.section->output_offset \ | |
182 | + (SYM)->root.u.def.value) | |
7fce784e | 183 | \f |
e47cd125 | 184 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 185 | |
8da6118f | 186 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 RH |
187 | /* This reloc does nothing. */ |
188 | HOWTO (R_PPC_NONE, /* type */ | |
189 | 0, /* rightshift */ | |
6346d5ca AM |
190 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
191 | 0, /* bitsize */ | |
b34976b6 | 192 | FALSE, /* pc_relative */ |
252b5132 | 193 | 0, /* bitpos */ |
86c95733 | 194 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
195 | bfd_elf_generic_reloc, /* special_function */ |
196 | "R_PPC_NONE", /* name */ | |
b34976b6 | 197 | FALSE, /* partial_inplace */ |
252b5132 RH |
198 | 0, /* src_mask */ |
199 | 0, /* dst_mask */ | |
b34976b6 | 200 | FALSE), /* pcrel_offset */ |
252b5132 RH |
201 | |
202 | /* A standard 32 bit relocation. */ | |
203 | HOWTO (R_PPC_ADDR32, /* type */ | |
204 | 0, /* rightshift */ | |
205 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
206 | 32, /* bitsize */ | |
b34976b6 | 207 | FALSE, /* pc_relative */ |
252b5132 | 208 | 0, /* bitpos */ |
86c95733 | 209 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
210 | bfd_elf_generic_reloc, /* special_function */ |
211 | "R_PPC_ADDR32", /* name */ | |
b34976b6 | 212 | FALSE, /* partial_inplace */ |
252b5132 RH |
213 | 0, /* src_mask */ |
214 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 215 | FALSE), /* pcrel_offset */ |
252b5132 RH |
216 | |
217 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
218 | FIXME: we don't check that, we just clear them. */ | |
219 | HOWTO (R_PPC_ADDR24, /* type */ | |
220 | 0, /* rightshift */ | |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
222 | 26, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
252b5132 | 224 | 0, /* bitpos */ |
86c95733 | 225 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
226 | bfd_elf_generic_reloc, /* special_function */ |
227 | "R_PPC_ADDR24", /* name */ | |
b34976b6 | 228 | FALSE, /* partial_inplace */ |
252b5132 RH |
229 | 0, /* src_mask */ |
230 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 231 | FALSE), /* pcrel_offset */ |
252b5132 RH |
232 | |
233 | /* A standard 16 bit relocation. */ | |
234 | HOWTO (R_PPC_ADDR16, /* type */ | |
235 | 0, /* rightshift */ | |
236 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
237 | 16, /* bitsize */ | |
b34976b6 | 238 | FALSE, /* pc_relative */ |
252b5132 RH |
239 | 0, /* bitpos */ |
240 | complain_overflow_bitfield, /* complain_on_overflow */ | |
241 | bfd_elf_generic_reloc, /* special_function */ | |
242 | "R_PPC_ADDR16", /* name */ | |
b34976b6 | 243 | FALSE, /* partial_inplace */ |
252b5132 RH |
244 | 0, /* src_mask */ |
245 | 0xffff, /* dst_mask */ | |
b34976b6 | 246 | FALSE), /* pcrel_offset */ |
252b5132 RH |
247 | |
248 | /* A 16 bit relocation without overflow. */ | |
249 | HOWTO (R_PPC_ADDR16_LO, /* type */ | |
250 | 0, /* rightshift */ | |
251 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
252 | 16, /* bitsize */ | |
b34976b6 | 253 | FALSE, /* pc_relative */ |
252b5132 RH |
254 | 0, /* bitpos */ |
255 | complain_overflow_dont,/* complain_on_overflow */ | |
256 | bfd_elf_generic_reloc, /* special_function */ | |
257 | "R_PPC_ADDR16_LO", /* name */ | |
b34976b6 | 258 | FALSE, /* partial_inplace */ |
252b5132 RH |
259 | 0, /* src_mask */ |
260 | 0xffff, /* dst_mask */ | |
b34976b6 | 261 | FALSE), /* pcrel_offset */ |
252b5132 RH |
262 | |
263 | /* The high order 16 bits of an address. */ | |
264 | HOWTO (R_PPC_ADDR16_HI, /* type */ | |
265 | 16, /* rightshift */ | |
266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
267 | 16, /* bitsize */ | |
b34976b6 | 268 | FALSE, /* pc_relative */ |
252b5132 RH |
269 | 0, /* bitpos */ |
270 | complain_overflow_dont, /* complain_on_overflow */ | |
271 | bfd_elf_generic_reloc, /* special_function */ | |
272 | "R_PPC_ADDR16_HI", /* name */ | |
b34976b6 | 273 | FALSE, /* partial_inplace */ |
252b5132 RH |
274 | 0, /* src_mask */ |
275 | 0xffff, /* dst_mask */ | |
b34976b6 | 276 | FALSE), /* pcrel_offset */ |
252b5132 RH |
277 | |
278 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 279 | the low 16 bits, treated as a signed number, is negative. */ |
252b5132 RH |
280 | HOWTO (R_PPC_ADDR16_HA, /* type */ |
281 | 16, /* rightshift */ | |
282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 16, /* bitsize */ | |
b34976b6 | 284 | FALSE, /* pc_relative */ |
252b5132 RH |
285 | 0, /* bitpos */ |
286 | complain_overflow_dont, /* complain_on_overflow */ | |
287 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
288 | "R_PPC_ADDR16_HA", /* name */ | |
b34976b6 | 289 | FALSE, /* partial_inplace */ |
252b5132 RH |
290 | 0, /* src_mask */ |
291 | 0xffff, /* dst_mask */ | |
b34976b6 | 292 | FALSE), /* pcrel_offset */ |
252b5132 RH |
293 | |
294 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
295 | FIXME: we don't check that, we just clear them. */ | |
296 | HOWTO (R_PPC_ADDR14, /* type */ | |
297 | 0, /* rightshift */ | |
298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 16, /* bitsize */ | |
b34976b6 | 300 | FALSE, /* pc_relative */ |
252b5132 | 301 | 0, /* bitpos */ |
86c95733 | 302 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
303 | bfd_elf_generic_reloc, /* special_function */ |
304 | "R_PPC_ADDR14", /* name */ | |
b34976b6 | 305 | FALSE, /* partial_inplace */ |
252b5132 RH |
306 | 0, /* src_mask */ |
307 | 0xfffc, /* dst_mask */ | |
b34976b6 | 308 | FALSE), /* pcrel_offset */ |
252b5132 RH |
309 | |
310 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
311 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 312 | bits must be zero. */ |
252b5132 RH |
313 | HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ |
314 | 0, /* rightshift */ | |
315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
316 | 16, /* bitsize */ | |
b34976b6 | 317 | FALSE, /* pc_relative */ |
252b5132 | 318 | 0, /* bitpos */ |
86c95733 | 319 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
320 | bfd_elf_generic_reloc, /* special_function */ |
321 | "R_PPC_ADDR14_BRTAKEN",/* name */ | |
b34976b6 | 322 | FALSE, /* partial_inplace */ |
252b5132 RH |
323 | 0, /* src_mask */ |
324 | 0xfffc, /* dst_mask */ | |
b34976b6 | 325 | FALSE), /* pcrel_offset */ |
252b5132 RH |
326 | |
327 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
328 | indicate that the branch is not expected to be taken. The lower | |
329 | two bits must be zero. */ | |
330 | HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ | |
331 | 0, /* rightshift */ | |
332 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
333 | 16, /* bitsize */ | |
b34976b6 | 334 | FALSE, /* pc_relative */ |
252b5132 | 335 | 0, /* bitpos */ |
86c95733 | 336 | complain_overflow_signed, /* complain_on_overflow */ |
252b5132 RH |
337 | bfd_elf_generic_reloc, /* special_function */ |
338 | "R_PPC_ADDR14_BRNTAKEN",/* name */ | |
b34976b6 | 339 | FALSE, /* partial_inplace */ |
252b5132 RH |
340 | 0, /* src_mask */ |
341 | 0xfffc, /* dst_mask */ | |
b34976b6 | 342 | FALSE), /* pcrel_offset */ |
252b5132 | 343 | |
8da6118f | 344 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
345 | HOWTO (R_PPC_REL24, /* type */ |
346 | 0, /* rightshift */ | |
347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 26, /* bitsize */ | |
b34976b6 | 349 | TRUE, /* pc_relative */ |
252b5132 RH |
350 | 0, /* bitpos */ |
351 | complain_overflow_signed, /* complain_on_overflow */ | |
352 | bfd_elf_generic_reloc, /* special_function */ | |
353 | "R_PPC_REL24", /* name */ | |
b34976b6 | 354 | FALSE, /* partial_inplace */ |
252b5132 RH |
355 | 0, /* src_mask */ |
356 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 357 | TRUE), /* pcrel_offset */ |
252b5132 | 358 | |
8da6118f | 359 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
252b5132 RH |
360 | HOWTO (R_PPC_REL14, /* type */ |
361 | 0, /* rightshift */ | |
362 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
363 | 16, /* bitsize */ | |
b34976b6 | 364 | TRUE, /* pc_relative */ |
252b5132 RH |
365 | 0, /* bitpos */ |
366 | complain_overflow_signed, /* complain_on_overflow */ | |
367 | bfd_elf_generic_reloc, /* special_function */ | |
368 | "R_PPC_REL14", /* name */ | |
b34976b6 | 369 | FALSE, /* partial_inplace */ |
252b5132 RH |
370 | 0, /* src_mask */ |
371 | 0xfffc, /* dst_mask */ | |
b34976b6 | 372 | TRUE), /* pcrel_offset */ |
252b5132 | 373 | |
8da6118f | 374 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
375 | the branch is expected to be taken. The lower two bits must be |
376 | zero. */ | |
377 | HOWTO (R_PPC_REL14_BRTAKEN, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 16, /* bitsize */ | |
b34976b6 | 381 | TRUE, /* pc_relative */ |
252b5132 RH |
382 | 0, /* bitpos */ |
383 | complain_overflow_signed, /* complain_on_overflow */ | |
384 | bfd_elf_generic_reloc, /* special_function */ | |
385 | "R_PPC_REL14_BRTAKEN", /* name */ | |
b34976b6 | 386 | FALSE, /* partial_inplace */ |
252b5132 RH |
387 | 0, /* src_mask */ |
388 | 0xfffc, /* dst_mask */ | |
b34976b6 | 389 | TRUE), /* pcrel_offset */ |
252b5132 | 390 | |
8da6118f | 391 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
392 | the branch is not expected to be taken. The lower two bits must |
393 | be zero. */ | |
394 | HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
b34976b6 | 398 | TRUE, /* pc_relative */ |
252b5132 RH |
399 | 0, /* bitpos */ |
400 | complain_overflow_signed, /* complain_on_overflow */ | |
401 | bfd_elf_generic_reloc, /* special_function */ | |
402 | "R_PPC_REL14_BRNTAKEN",/* name */ | |
b34976b6 | 403 | FALSE, /* partial_inplace */ |
252b5132 RH |
404 | 0, /* src_mask */ |
405 | 0xfffc, /* dst_mask */ | |
b34976b6 | 406 | TRUE), /* pcrel_offset */ |
252b5132 RH |
407 | |
408 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
409 | symbol. */ | |
410 | HOWTO (R_PPC_GOT16, /* type */ | |
411 | 0, /* rightshift */ | |
412 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
413 | 16, /* bitsize */ | |
b34976b6 | 414 | FALSE, /* pc_relative */ |
252b5132 RH |
415 | 0, /* bitpos */ |
416 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 417 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 418 | "R_PPC_GOT16", /* name */ |
b34976b6 | 419 | FALSE, /* partial_inplace */ |
252b5132 RH |
420 | 0, /* src_mask */ |
421 | 0xffff, /* dst_mask */ | |
b34976b6 | 422 | FALSE), /* pcrel_offset */ |
252b5132 RH |
423 | |
424 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
425 | the symbol. */ | |
426 | HOWTO (R_PPC_GOT16_LO, /* type */ | |
427 | 0, /* rightshift */ | |
428 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
429 | 16, /* bitsize */ | |
b34976b6 | 430 | FALSE, /* pc_relative */ |
252b5132 RH |
431 | 0, /* bitpos */ |
432 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 433 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 434 | "R_PPC_GOT16_LO", /* name */ |
b34976b6 | 435 | FALSE, /* partial_inplace */ |
252b5132 RH |
436 | 0, /* src_mask */ |
437 | 0xffff, /* dst_mask */ | |
b34976b6 | 438 | FALSE), /* pcrel_offset */ |
252b5132 RH |
439 | |
440 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
441 | the symbol. */ | |
442 | HOWTO (R_PPC_GOT16_HI, /* type */ | |
443 | 16, /* rightshift */ | |
444 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 16, /* bitsize */ | |
b34976b6 | 446 | FALSE, /* pc_relative */ |
252b5132 | 447 | 0, /* bitpos */ |
86c95733 | 448 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 449 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 450 | "R_PPC_GOT16_HI", /* name */ |
b34976b6 | 451 | FALSE, /* partial_inplace */ |
252b5132 RH |
452 | 0, /* src_mask */ |
453 | 0xffff, /* dst_mask */ | |
b34976b6 | 454 | FALSE), /* pcrel_offset */ |
252b5132 RH |
455 | |
456 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
457 | the symbol. */ | |
458 | HOWTO (R_PPC_GOT16_HA, /* type */ | |
459 | 16, /* rightshift */ | |
460 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
461 | 16, /* bitsize */ | |
b34976b6 | 462 | FALSE, /* pc_relative */ |
252b5132 | 463 | 0, /* bitpos */ |
86c95733 | 464 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 465 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 466 | "R_PPC_GOT16_HA", /* name */ |
b34976b6 | 467 | FALSE, /* partial_inplace */ |
252b5132 RH |
468 | 0, /* src_mask */ |
469 | 0xffff, /* dst_mask */ | |
b34976b6 | 470 | FALSE), /* pcrel_offset */ |
252b5132 RH |
471 | |
472 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
473 | entry for the symbol. */ | |
474 | HOWTO (R_PPC_PLTREL24, /* type */ | |
475 | 0, /* rightshift */ | |
476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
477 | 26, /* bitsize */ | |
b34976b6 | 478 | TRUE, /* pc_relative */ |
252b5132 | 479 | 0, /* bitpos */ |
3ce51288 AM |
480 | complain_overflow_signed, /* complain_on_overflow */ |
481 | ppc_elf_unhandled_reloc, /* special_function */ | |
252b5132 | 482 | "R_PPC_PLTREL24", /* name */ |
b34976b6 | 483 | FALSE, /* partial_inplace */ |
252b5132 RH |
484 | 0, /* src_mask */ |
485 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 486 | TRUE), /* pcrel_offset */ |
252b5132 RH |
487 | |
488 | /* This is used only by the dynamic linker. The symbol should exist | |
489 | both in the object being run and in some shared library. The | |
490 | dynamic linker copies the data addressed by the symbol from the | |
491 | shared library into the object, because the object being | |
492 | run has to have the data at some particular address. */ | |
493 | HOWTO (R_PPC_COPY, /* type */ | |
494 | 0, /* rightshift */ | |
495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
496 | 32, /* bitsize */ | |
b34976b6 | 497 | FALSE, /* pc_relative */ |
252b5132 | 498 | 0, /* bitpos */ |
86c95733 | 499 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 500 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 501 | "R_PPC_COPY", /* name */ |
b34976b6 | 502 | FALSE, /* partial_inplace */ |
252b5132 RH |
503 | 0, /* src_mask */ |
504 | 0, /* dst_mask */ | |
b34976b6 | 505 | FALSE), /* pcrel_offset */ |
252b5132 RH |
506 | |
507 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
508 | entries. */ | |
509 | HOWTO (R_PPC_GLOB_DAT, /* type */ | |
510 | 0, /* rightshift */ | |
511 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
512 | 32, /* bitsize */ | |
b34976b6 | 513 | FALSE, /* pc_relative */ |
252b5132 | 514 | 0, /* bitpos */ |
86c95733 | 515 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 516 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 517 | "R_PPC_GLOB_DAT", /* name */ |
b34976b6 | 518 | FALSE, /* partial_inplace */ |
252b5132 RH |
519 | 0, /* src_mask */ |
520 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 521 | FALSE), /* pcrel_offset */ |
252b5132 RH |
522 | |
523 | /* Marks a procedure linkage table entry for a symbol. */ | |
524 | HOWTO (R_PPC_JMP_SLOT, /* type */ | |
525 | 0, /* rightshift */ | |
526 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
527 | 32, /* bitsize */ | |
b34976b6 | 528 | FALSE, /* pc_relative */ |
252b5132 | 529 | 0, /* bitpos */ |
86c95733 | 530 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 531 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 532 | "R_PPC_JMP_SLOT", /* name */ |
b34976b6 | 533 | FALSE, /* partial_inplace */ |
252b5132 RH |
534 | 0, /* src_mask */ |
535 | 0, /* dst_mask */ | |
b34976b6 | 536 | FALSE), /* pcrel_offset */ |
252b5132 RH |
537 | |
538 | /* Used only by the dynamic linker. When the object is run, this | |
539 | longword is set to the load address of the object, plus the | |
540 | addend. */ | |
541 | HOWTO (R_PPC_RELATIVE, /* type */ | |
542 | 0, /* rightshift */ | |
543 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
544 | 32, /* bitsize */ | |
b34976b6 | 545 | FALSE, /* pc_relative */ |
252b5132 | 546 | 0, /* bitpos */ |
86c95733 | 547 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
548 | bfd_elf_generic_reloc, /* special_function */ |
549 | "R_PPC_RELATIVE", /* name */ | |
b34976b6 | 550 | FALSE, /* partial_inplace */ |
252b5132 RH |
551 | 0, /* src_mask */ |
552 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 553 | FALSE), /* pcrel_offset */ |
252b5132 RH |
554 | |
555 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
556 | object rather than the final value. Normally used for | |
557 | _GLOBAL_OFFSET_TABLE_. */ | |
558 | HOWTO (R_PPC_LOCAL24PC, /* type */ | |
559 | 0, /* rightshift */ | |
560 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
561 | 26, /* bitsize */ | |
b34976b6 | 562 | TRUE, /* pc_relative */ |
252b5132 RH |
563 | 0, /* bitpos */ |
564 | complain_overflow_signed, /* complain_on_overflow */ | |
565 | bfd_elf_generic_reloc, /* special_function */ | |
566 | "R_PPC_LOCAL24PC", /* name */ | |
b34976b6 | 567 | FALSE, /* partial_inplace */ |
252b5132 RH |
568 | 0, /* src_mask */ |
569 | 0x3fffffc, /* dst_mask */ | |
b34976b6 | 570 | TRUE), /* pcrel_offset */ |
252b5132 RH |
571 | |
572 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
573 | HOWTO (R_PPC_UADDR32, /* type */ | |
574 | 0, /* rightshift */ | |
575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
576 | 32, /* bitsize */ | |
b34976b6 | 577 | FALSE, /* pc_relative */ |
252b5132 | 578 | 0, /* bitpos */ |
86c95733 | 579 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
580 | bfd_elf_generic_reloc, /* special_function */ |
581 | "R_PPC_UADDR32", /* name */ | |
b34976b6 | 582 | FALSE, /* partial_inplace */ |
252b5132 RH |
583 | 0, /* src_mask */ |
584 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 585 | FALSE), /* pcrel_offset */ |
252b5132 RH |
586 | |
587 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
588 | HOWTO (R_PPC_UADDR16, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 16, /* bitsize */ | |
b34976b6 | 592 | FALSE, /* pc_relative */ |
252b5132 RH |
593 | 0, /* bitpos */ |
594 | complain_overflow_bitfield, /* complain_on_overflow */ | |
595 | bfd_elf_generic_reloc, /* special_function */ | |
596 | "R_PPC_UADDR16", /* name */ | |
b34976b6 | 597 | FALSE, /* partial_inplace */ |
252b5132 RH |
598 | 0, /* src_mask */ |
599 | 0xffff, /* dst_mask */ | |
b34976b6 | 600 | FALSE), /* pcrel_offset */ |
252b5132 RH |
601 | |
602 | /* 32-bit PC relative */ | |
603 | HOWTO (R_PPC_REL32, /* type */ | |
604 | 0, /* rightshift */ | |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 32, /* bitsize */ | |
b34976b6 | 607 | TRUE, /* pc_relative */ |
252b5132 | 608 | 0, /* bitpos */ |
86c95733 | 609 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 RH |
610 | bfd_elf_generic_reloc, /* special_function */ |
611 | "R_PPC_REL32", /* name */ | |
b34976b6 | 612 | FALSE, /* partial_inplace */ |
252b5132 RH |
613 | 0, /* src_mask */ |
614 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 615 | TRUE), /* pcrel_offset */ |
252b5132 RH |
616 | |
617 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 618 | FIXME: not supported. */ |
252b5132 RH |
619 | HOWTO (R_PPC_PLT32, /* type */ |
620 | 0, /* rightshift */ | |
621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
622 | 32, /* bitsize */ | |
b34976b6 | 623 | FALSE, /* pc_relative */ |
252b5132 | 624 | 0, /* bitpos */ |
86c95733 | 625 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 626 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 627 | "R_PPC_PLT32", /* name */ |
b34976b6 | 628 | FALSE, /* partial_inplace */ |
252b5132 RH |
629 | 0, /* src_mask */ |
630 | 0, /* dst_mask */ | |
b34976b6 | 631 | FALSE), /* pcrel_offset */ |
252b5132 RH |
632 | |
633 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 634 | FIXME: not supported. */ |
252b5132 RH |
635 | HOWTO (R_PPC_PLTREL32, /* type */ |
636 | 0, /* rightshift */ | |
637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
638 | 32, /* bitsize */ | |
b34976b6 | 639 | TRUE, /* pc_relative */ |
252b5132 | 640 | 0, /* bitpos */ |
86c95733 | 641 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 642 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 643 | "R_PPC_PLTREL32", /* name */ |
b34976b6 | 644 | FALSE, /* partial_inplace */ |
252b5132 RH |
645 | 0, /* src_mask */ |
646 | 0, /* dst_mask */ | |
b34976b6 | 647 | TRUE), /* pcrel_offset */ |
252b5132 RH |
648 | |
649 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
650 | the symbol. */ | |
651 | HOWTO (R_PPC_PLT16_LO, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 16, /* bitsize */ | |
b34976b6 | 655 | FALSE, /* pc_relative */ |
252b5132 RH |
656 | 0, /* bitpos */ |
657 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 658 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 659 | "R_PPC_PLT16_LO", /* name */ |
b34976b6 | 660 | FALSE, /* partial_inplace */ |
252b5132 RH |
661 | 0, /* src_mask */ |
662 | 0xffff, /* dst_mask */ | |
b34976b6 | 663 | FALSE), /* pcrel_offset */ |
252b5132 RH |
664 | |
665 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
666 | the symbol. */ | |
667 | HOWTO (R_PPC_PLT16_HI, /* type */ | |
668 | 16, /* rightshift */ | |
669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
670 | 16, /* bitsize */ | |
b34976b6 | 671 | FALSE, /* pc_relative */ |
252b5132 | 672 | 0, /* bitpos */ |
86c95733 | 673 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 674 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 675 | "R_PPC_PLT16_HI", /* name */ |
b34976b6 | 676 | FALSE, /* partial_inplace */ |
252b5132 RH |
677 | 0, /* src_mask */ |
678 | 0xffff, /* dst_mask */ | |
b34976b6 | 679 | FALSE), /* pcrel_offset */ |
252b5132 RH |
680 | |
681 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
682 | the symbol. */ | |
683 | HOWTO (R_PPC_PLT16_HA, /* type */ | |
684 | 16, /* rightshift */ | |
685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
686 | 16, /* bitsize */ | |
b34976b6 | 687 | FALSE, /* pc_relative */ |
252b5132 | 688 | 0, /* bitpos */ |
86c95733 | 689 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 690 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 691 | "R_PPC_PLT16_HA", /* name */ |
b34976b6 | 692 | FALSE, /* partial_inplace */ |
252b5132 RH |
693 | 0, /* src_mask */ |
694 | 0xffff, /* dst_mask */ | |
b34976b6 | 695 | FALSE), /* pcrel_offset */ |
252b5132 RH |
696 | |
697 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
698 | small data items. */ | |
699 | HOWTO (R_PPC_SDAREL16, /* type */ | |
700 | 0, /* rightshift */ | |
701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
702 | 16, /* bitsize */ | |
b34976b6 | 703 | FALSE, /* pc_relative */ |
252b5132 RH |
704 | 0, /* bitpos */ |
705 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 706 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 707 | "R_PPC_SDAREL16", /* name */ |
b34976b6 | 708 | FALSE, /* partial_inplace */ |
252b5132 RH |
709 | 0, /* src_mask */ |
710 | 0xffff, /* dst_mask */ | |
b34976b6 | 711 | FALSE), /* pcrel_offset */ |
252b5132 | 712 | |
c061c2d8 | 713 | /* 16-bit section relative relocation. */ |
252b5132 RH |
714 | HOWTO (R_PPC_SECTOFF, /* type */ |
715 | 0, /* rightshift */ | |
c061c2d8 AM |
716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
717 | 16, /* bitsize */ | |
b34976b6 | 718 | FALSE, /* pc_relative */ |
252b5132 | 719 | 0, /* bitpos */ |
86c95733 | 720 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 721 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 722 | "R_PPC_SECTOFF", /* name */ |
b34976b6 | 723 | FALSE, /* partial_inplace */ |
252b5132 | 724 | 0, /* src_mask */ |
c061c2d8 | 725 | 0xffff, /* dst_mask */ |
b34976b6 | 726 | FALSE), /* pcrel_offset */ |
252b5132 | 727 | |
c3668558 | 728 | /* 16-bit lower half section relative relocation. */ |
252b5132 RH |
729 | HOWTO (R_PPC_SECTOFF_LO, /* type */ |
730 | 0, /* rightshift */ | |
731 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
732 | 16, /* bitsize */ | |
b34976b6 | 733 | FALSE, /* pc_relative */ |
252b5132 RH |
734 | 0, /* bitpos */ |
735 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 736 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 737 | "R_PPC_SECTOFF_LO", /* name */ |
b34976b6 | 738 | FALSE, /* partial_inplace */ |
252b5132 RH |
739 | 0, /* src_mask */ |
740 | 0xffff, /* dst_mask */ | |
b34976b6 | 741 | FALSE), /* pcrel_offset */ |
252b5132 | 742 | |
c3668558 | 743 | /* 16-bit upper half section relative relocation. */ |
252b5132 RH |
744 | HOWTO (R_PPC_SECTOFF_HI, /* type */ |
745 | 16, /* rightshift */ | |
746 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
747 | 16, /* bitsize */ | |
b34976b6 | 748 | FALSE, /* pc_relative */ |
252b5132 | 749 | 0, /* bitpos */ |
86c95733 | 750 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 751 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 752 | "R_PPC_SECTOFF_HI", /* name */ |
b34976b6 | 753 | FALSE, /* partial_inplace */ |
252b5132 RH |
754 | 0, /* src_mask */ |
755 | 0xffff, /* dst_mask */ | |
b34976b6 | 756 | FALSE), /* pcrel_offset */ |
252b5132 | 757 | |
c3668558 | 758 | /* 16-bit upper half adjusted section relative relocation. */ |
252b5132 RH |
759 | HOWTO (R_PPC_SECTOFF_HA, /* type */ |
760 | 16, /* rightshift */ | |
761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
762 | 16, /* bitsize */ | |
b34976b6 | 763 | FALSE, /* pc_relative */ |
252b5132 | 764 | 0, /* bitpos */ |
86c95733 | 765 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 766 | ppc_elf_unhandled_reloc, /* special_function */ |
252b5132 | 767 | "R_PPC_SECTOFF_HA", /* name */ |
b34976b6 | 768 | FALSE, /* partial_inplace */ |
252b5132 RH |
769 | 0, /* src_mask */ |
770 | 0xffff, /* dst_mask */ | |
b34976b6 | 771 | FALSE), /* pcrel_offset */ |
252b5132 | 772 | |
727fc41e | 773 | /* Marker relocs for TLS. */ |
7619e7c7 | 774 | HOWTO (R_PPC_TLS, |
252b5132 RH |
775 | 0, /* rightshift */ |
776 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
777 | 32, /* bitsize */ | |
b34976b6 | 778 | FALSE, /* pc_relative */ |
252b5132 | 779 | 0, /* bitpos */ |
7619e7c7 | 780 | complain_overflow_dont, /* complain_on_overflow */ |
252b5132 | 781 | bfd_elf_generic_reloc, /* special_function */ |
7619e7c7 AM |
782 | "R_PPC_TLS", /* name */ |
783 | FALSE, /* partial_inplace */ | |
784 | 0, /* src_mask */ | |
785 | 0, /* dst_mask */ | |
786 | FALSE), /* pcrel_offset */ | |
787 | ||
727fc41e AM |
788 | HOWTO (R_PPC_TLSGD, |
789 | 0, /* rightshift */ | |
790 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
791 | 32, /* bitsize */ | |
792 | FALSE, /* pc_relative */ | |
793 | 0, /* bitpos */ | |
794 | complain_overflow_dont, /* complain_on_overflow */ | |
795 | bfd_elf_generic_reloc, /* special_function */ | |
796 | "R_PPC_TLSGD", /* name */ | |
797 | FALSE, /* partial_inplace */ | |
798 | 0, /* src_mask */ | |
799 | 0, /* dst_mask */ | |
800 | FALSE), /* pcrel_offset */ | |
801 | ||
802 | HOWTO (R_PPC_TLSLD, | |
803 | 0, /* rightshift */ | |
804 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
805 | 32, /* bitsize */ | |
806 | FALSE, /* pc_relative */ | |
807 | 0, /* bitpos */ | |
808 | complain_overflow_dont, /* complain_on_overflow */ | |
809 | bfd_elf_generic_reloc, /* special_function */ | |
810 | "R_PPC_TLSLD", /* name */ | |
811 | FALSE, /* partial_inplace */ | |
812 | 0, /* src_mask */ | |
813 | 0, /* dst_mask */ | |
814 | FALSE), /* pcrel_offset */ | |
815 | ||
7619e7c7 AM |
816 | /* Computes the load module index of the load module that contains the |
817 | definition of its TLS sym. */ | |
818 | HOWTO (R_PPC_DTPMOD32, | |
819 | 0, /* rightshift */ | |
820 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
821 | 32, /* bitsize */ | |
822 | FALSE, /* pc_relative */ | |
823 | 0, /* bitpos */ | |
824 | complain_overflow_dont, /* complain_on_overflow */ | |
825 | ppc_elf_unhandled_reloc, /* special_function */ | |
826 | "R_PPC_DTPMOD32", /* name */ | |
b34976b6 | 827 | FALSE, /* partial_inplace */ |
252b5132 RH |
828 | 0, /* src_mask */ |
829 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 830 | FALSE), /* pcrel_offset */ |
252b5132 | 831 | |
7619e7c7 AM |
832 | /* Computes a dtv-relative displacement, the difference between the value |
833 | of sym+add and the base address of the thread-local storage block that | |
834 | contains the definition of sym, minus 0x8000. */ | |
835 | HOWTO (R_PPC_DTPREL32, | |
836 | 0, /* rightshift */ | |
837 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
838 | 32, /* bitsize */ | |
839 | FALSE, /* pc_relative */ | |
840 | 0, /* bitpos */ | |
841 | complain_overflow_dont, /* complain_on_overflow */ | |
842 | ppc_elf_unhandled_reloc, /* special_function */ | |
843 | "R_PPC_DTPREL32", /* name */ | |
844 | FALSE, /* partial_inplace */ | |
845 | 0, /* src_mask */ | |
846 | 0xffffffff, /* dst_mask */ | |
847 | FALSE), /* pcrel_offset */ | |
848 | ||
849 | /* A 16 bit dtprel reloc. */ | |
850 | HOWTO (R_PPC_DTPREL16, | |
252b5132 RH |
851 | 0, /* rightshift */ |
852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 16, /* bitsize */ | |
b34976b6 | 854 | FALSE, /* pc_relative */ |
252b5132 | 855 | 0, /* bitpos */ |
7619e7c7 AM |
856 | complain_overflow_signed, /* complain_on_overflow */ |
857 | ppc_elf_unhandled_reloc, /* special_function */ | |
858 | "R_PPC_DTPREL16", /* name */ | |
b34976b6 | 859 | FALSE, /* partial_inplace */ |
252b5132 RH |
860 | 0, /* src_mask */ |
861 | 0xffff, /* dst_mask */ | |
b34976b6 | 862 | FALSE), /* pcrel_offset */ |
252b5132 | 863 | |
7619e7c7 AM |
864 | /* Like DTPREL16, but no overflow. */ |
865 | HOWTO (R_PPC_DTPREL16_LO, | |
252b5132 RH |
866 | 0, /* rightshift */ |
867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 16, /* bitsize */ | |
b34976b6 | 869 | FALSE, /* pc_relative */ |
252b5132 | 870 | 0, /* bitpos */ |
7619e7c7 AM |
871 | complain_overflow_dont, /* complain_on_overflow */ |
872 | ppc_elf_unhandled_reloc, /* special_function */ | |
873 | "R_PPC_DTPREL16_LO", /* name */ | |
b34976b6 | 874 | FALSE, /* partial_inplace */ |
252b5132 RH |
875 | 0, /* src_mask */ |
876 | 0xffff, /* dst_mask */ | |
b34976b6 | 877 | FALSE), /* pcrel_offset */ |
252b5132 | 878 | |
7619e7c7 AM |
879 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
880 | HOWTO (R_PPC_DTPREL16_HI, | |
252b5132 RH |
881 | 16, /* rightshift */ |
882 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
883 | 16, /* bitsize */ | |
b34976b6 | 884 | FALSE, /* pc_relative */ |
252b5132 RH |
885 | 0, /* bitpos */ |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
887 | ppc_elf_unhandled_reloc, /* special_function */ |
888 | "R_PPC_DTPREL16_HI", /* name */ | |
b34976b6 | 889 | FALSE, /* partial_inplace */ |
252b5132 RH |
890 | 0, /* src_mask */ |
891 | 0xffff, /* dst_mask */ | |
b34976b6 | 892 | FALSE), /* pcrel_offset */ |
252b5132 | 893 | |
7619e7c7 AM |
894 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
895 | HOWTO (R_PPC_DTPREL16_HA, | |
252b5132 RH |
896 | 16, /* rightshift */ |
897 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
898 | 16, /* bitsize */ | |
b34976b6 | 899 | FALSE, /* pc_relative */ |
252b5132 RH |
900 | 0, /* bitpos */ |
901 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
902 | ppc_elf_unhandled_reloc, /* special_function */ |
903 | "R_PPC_DTPREL16_HA", /* name */ | |
b34976b6 | 904 | FALSE, /* partial_inplace */ |
252b5132 RH |
905 | 0, /* src_mask */ |
906 | 0xffff, /* dst_mask */ | |
b34976b6 | 907 | FALSE), /* pcrel_offset */ |
252b5132 | 908 | |
7619e7c7 AM |
909 | /* Computes a tp-relative displacement, the difference between the value of |
910 | sym+add and the value of the thread pointer (r13). */ | |
911 | HOWTO (R_PPC_TPREL32, | |
912 | 0, /* rightshift */ | |
913 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
914 | 32, /* bitsize */ | |
915 | FALSE, /* pc_relative */ | |
916 | 0, /* bitpos */ | |
917 | complain_overflow_dont, /* complain_on_overflow */ | |
918 | ppc_elf_unhandled_reloc, /* special_function */ | |
919 | "R_PPC_TPREL32", /* name */ | |
920 | FALSE, /* partial_inplace */ | |
921 | 0, /* src_mask */ | |
922 | 0xffffffff, /* dst_mask */ | |
923 | FALSE), /* pcrel_offset */ | |
924 | ||
925 | /* A 16 bit tprel reloc. */ | |
926 | HOWTO (R_PPC_TPREL16, | |
252b5132 RH |
927 | 0, /* rightshift */ |
928 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
929 | 16, /* bitsize */ | |
b34976b6 | 930 | FALSE, /* pc_relative */ |
252b5132 | 931 | 0, /* bitpos */ |
7619e7c7 AM |
932 | complain_overflow_signed, /* complain_on_overflow */ |
933 | ppc_elf_unhandled_reloc, /* special_function */ | |
934 | "R_PPC_TPREL16", /* name */ | |
b34976b6 | 935 | FALSE, /* partial_inplace */ |
252b5132 RH |
936 | 0, /* src_mask */ |
937 | 0xffff, /* dst_mask */ | |
b34976b6 | 938 | FALSE), /* pcrel_offset */ |
252b5132 | 939 | |
7619e7c7 AM |
940 | /* Like TPREL16, but no overflow. */ |
941 | HOWTO (R_PPC_TPREL16_LO, | |
252b5132 RH |
942 | 0, /* rightshift */ |
943 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
944 | 16, /* bitsize */ | |
b34976b6 | 945 | FALSE, /* pc_relative */ |
252b5132 | 946 | 0, /* bitpos */ |
7619e7c7 AM |
947 | complain_overflow_dont, /* complain_on_overflow */ |
948 | ppc_elf_unhandled_reloc, /* special_function */ | |
949 | "R_PPC_TPREL16_LO", /* name */ | |
b34976b6 | 950 | FALSE, /* partial_inplace */ |
252b5132 RH |
951 | 0, /* src_mask */ |
952 | 0xffff, /* dst_mask */ | |
b34976b6 | 953 | FALSE), /* pcrel_offset */ |
252b5132 | 954 | |
7619e7c7 AM |
955 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
956 | HOWTO (R_PPC_TPREL16_HI, | |
957 | 16, /* rightshift */ | |
958 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
959 | 16, /* bitsize */ | |
960 | FALSE, /* pc_relative */ | |
961 | 0, /* bitpos */ | |
962 | complain_overflow_dont, /* complain_on_overflow */ | |
963 | ppc_elf_unhandled_reloc, /* special_function */ | |
964 | "R_PPC_TPREL16_HI", /* name */ | |
965 | FALSE, /* partial_inplace */ | |
966 | 0, /* src_mask */ | |
967 | 0xffff, /* dst_mask */ | |
968 | FALSE), /* pcrel_offset */ | |
969 | ||
970 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
971 | HOWTO (R_PPC_TPREL16_HA, | |
972 | 16, /* rightshift */ | |
973 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 16, /* bitsize */ | |
975 | FALSE, /* pc_relative */ | |
976 | 0, /* bitpos */ | |
977 | complain_overflow_dont, /* complain_on_overflow */ | |
978 | ppc_elf_unhandled_reloc, /* special_function */ | |
979 | "R_PPC_TPREL16_HA", /* name */ | |
980 | FALSE, /* partial_inplace */ | |
981 | 0, /* src_mask */ | |
982 | 0xffff, /* dst_mask */ | |
983 | FALSE), /* pcrel_offset */ | |
984 | ||
985 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
986 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
987 | to the first entry. */ | |
988 | HOWTO (R_PPC_GOT_TLSGD16, | |
252b5132 RH |
989 | 0, /* rightshift */ |
990 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
991 | 16, /* bitsize */ | |
b34976b6 | 992 | FALSE, /* pc_relative */ |
252b5132 RH |
993 | 0, /* bitpos */ |
994 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
995 | ppc_elf_unhandled_reloc, /* special_function */ |
996 | "R_PPC_GOT_TLSGD16", /* name */ | |
b34976b6 | 997 | FALSE, /* partial_inplace */ |
252b5132 RH |
998 | 0, /* src_mask */ |
999 | 0xffff, /* dst_mask */ | |
b34976b6 | 1000 | FALSE), /* pcrel_offset */ |
252b5132 | 1001 | |
7619e7c7 AM |
1002 | /* Like GOT_TLSGD16, but no overflow. */ |
1003 | HOWTO (R_PPC_GOT_TLSGD16_LO, | |
252b5132 | 1004 | 0, /* rightshift */ |
7619e7c7 | 1005 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 1006 | 16, /* bitsize */ |
b34976b6 | 1007 | FALSE, /* pc_relative */ |
252b5132 | 1008 | 0, /* bitpos */ |
7619e7c7 AM |
1009 | complain_overflow_dont, /* complain_on_overflow */ |
1010 | ppc_elf_unhandled_reloc, /* special_function */ | |
1011 | "R_PPC_GOT_TLSGD16_LO", /* name */ | |
b34976b6 | 1012 | FALSE, /* partial_inplace */ |
252b5132 RH |
1013 | 0, /* src_mask */ |
1014 | 0xffff, /* dst_mask */ | |
b34976b6 | 1015 | FALSE), /* pcrel_offset */ |
252b5132 | 1016 | |
7619e7c7 AM |
1017 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1018 | HOWTO (R_PPC_GOT_TLSGD16_HI, | |
1019 | 16, /* rightshift */ | |
1020 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1021 | 16, /* bitsize */ | |
1022 | FALSE, /* pc_relative */ | |
1023 | 0, /* bitpos */ | |
1024 | complain_overflow_dont, /* complain_on_overflow */ | |
1025 | ppc_elf_unhandled_reloc, /* special_function */ | |
1026 | "R_PPC_GOT_TLSGD16_HI", /* name */ | |
1027 | FALSE, /* partial_inplace */ | |
1028 | 0, /* src_mask */ | |
1029 | 0xffff, /* dst_mask */ | |
1030 | FALSE), /* pcrel_offset */ | |
252b5132 | 1031 | |
7619e7c7 AM |
1032 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1033 | HOWTO (R_PPC_GOT_TLSGD16_HA, | |
1034 | 16, /* rightshift */ | |
1035 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1036 | 16, /* bitsize */ | |
1037 | FALSE, /* pc_relative */ | |
1038 | 0, /* bitpos */ | |
1039 | complain_overflow_dont, /* complain_on_overflow */ | |
1040 | ppc_elf_unhandled_reloc, /* special_function */ | |
1041 | "R_PPC_GOT_TLSGD16_HA", /* name */ | |
1042 | FALSE, /* partial_inplace */ | |
1043 | 0, /* src_mask */ | |
1044 | 0xffff, /* dst_mask */ | |
1045 | FALSE), /* pcrel_offset */ | |
1046 | ||
1047 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1048 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1049 | first entry. */ | |
1050 | HOWTO (R_PPC_GOT_TLSLD16, | |
252b5132 RH |
1051 | 0, /* rightshift */ |
1052 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1053 | 16, /* bitsize */ | |
7619e7c7 | 1054 | FALSE, /* pc_relative */ |
252b5132 RH |
1055 | 0, /* bitpos */ |
1056 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1057 | ppc_elf_unhandled_reloc, /* special_function */ |
1058 | "R_PPC_GOT_TLSLD16", /* name */ | |
b34976b6 | 1059 | FALSE, /* partial_inplace */ |
252b5132 RH |
1060 | 0, /* src_mask */ |
1061 | 0xffff, /* dst_mask */ | |
b34976b6 | 1062 | FALSE), /* pcrel_offset */ |
252b5132 | 1063 | |
7619e7c7 AM |
1064 | /* Like GOT_TLSLD16, but no overflow. */ |
1065 | HOWTO (R_PPC_GOT_TLSLD16_LO, | |
252b5132 | 1066 | 0, /* rightshift */ |
7619e7c7 AM |
1067 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1068 | 16, /* bitsize */ | |
b34976b6 | 1069 | FALSE, /* pc_relative */ |
252b5132 RH |
1070 | 0, /* bitpos */ |
1071 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1072 | ppc_elf_unhandled_reloc, /* special_function */ |
1073 | "R_PPC_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1074 | FALSE, /* partial_inplace */ |
252b5132 | 1075 | 0, /* src_mask */ |
7619e7c7 | 1076 | 0xffff, /* dst_mask */ |
b34976b6 | 1077 | FALSE), /* pcrel_offset */ |
252b5132 | 1078 | |
7619e7c7 AM |
1079 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1080 | HOWTO (R_PPC_GOT_TLSLD16_HI, | |
1081 | 16, /* rightshift */ | |
1082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1083 | 16, /* bitsize */ | |
b34976b6 | 1084 | FALSE, /* pc_relative */ |
252b5132 RH |
1085 | 0, /* bitpos */ |
1086 | complain_overflow_dont, /* complain_on_overflow */ | |
7619e7c7 AM |
1087 | ppc_elf_unhandled_reloc, /* special_function */ |
1088 | "R_PPC_GOT_TLSLD16_HI", /* name */ | |
b34976b6 | 1089 | FALSE, /* partial_inplace */ |
252b5132 | 1090 | 0, /* src_mask */ |
7619e7c7 | 1091 | 0xffff, /* dst_mask */ |
b34976b6 | 1092 | FALSE), /* pcrel_offset */ |
252b5132 | 1093 | |
7619e7c7 AM |
1094 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1095 | HOWTO (R_PPC_GOT_TLSLD16_HA, | |
1096 | 16, /* rightshift */ | |
1097 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1098 | 16, /* bitsize */ | |
1099 | FALSE, /* pc_relative */ | |
1100 | 0, /* bitpos */ | |
1101 | complain_overflow_dont, /* complain_on_overflow */ | |
1102 | ppc_elf_unhandled_reloc, /* special_function */ | |
1103 | "R_PPC_GOT_TLSLD16_HA", /* name */ | |
1104 | FALSE, /* partial_inplace */ | |
1105 | 0, /* src_mask */ | |
1106 | 0xffff, /* dst_mask */ | |
1107 | FALSE), /* pcrel_offset */ | |
1108 | ||
1109 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
1110 | the offset to the entry. */ | |
1111 | HOWTO (R_PPC_GOT_DTPREL16, | |
252b5132 RH |
1112 | 0, /* rightshift */ |
1113 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1114 | 16, /* bitsize */ | |
b34976b6 | 1115 | FALSE, /* pc_relative */ |
252b5132 RH |
1116 | 0, /* bitpos */ |
1117 | complain_overflow_signed, /* complain_on_overflow */ | |
7619e7c7 AM |
1118 | ppc_elf_unhandled_reloc, /* special_function */ |
1119 | "R_PPC_GOT_DTPREL16", /* name */ | |
b34976b6 | 1120 | FALSE, /* partial_inplace */ |
252b5132 RH |
1121 | 0, /* src_mask */ |
1122 | 0xffff, /* dst_mask */ | |
b34976b6 | 1123 | FALSE), /* pcrel_offset */ |
252b5132 | 1124 | |
7619e7c7 AM |
1125 | /* Like GOT_DTPREL16, but no overflow. */ |
1126 | HOWTO (R_PPC_GOT_DTPREL16_LO, | |
1127 | 0, /* rightshift */ | |
1128 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1129 | 16, /* bitsize */ | |
1130 | FALSE, /* pc_relative */ | |
1131 | 0, /* bitpos */ | |
1132 | complain_overflow_dont, /* complain_on_overflow */ | |
1133 | ppc_elf_unhandled_reloc, /* special_function */ | |
1134 | "R_PPC_GOT_DTPREL16_LO", /* name */ | |
1135 | FALSE, /* partial_inplace */ | |
1136 | 0, /* src_mask */ | |
1137 | 0xffff, /* dst_mask */ | |
1138 | FALSE), /* pcrel_offset */ | |
252b5132 | 1139 | |
7619e7c7 AM |
1140 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
1141 | HOWTO (R_PPC_GOT_DTPREL16_HI, | |
1142 | 16, /* rightshift */ | |
1143 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1144 | 16, /* bitsize */ | |
1145 | FALSE, /* pc_relative */ | |
1146 | 0, /* bitpos */ | |
1147 | complain_overflow_dont, /* complain_on_overflow */ | |
1148 | ppc_elf_unhandled_reloc, /* special_function */ | |
1149 | "R_PPC_GOT_DTPREL16_HI", /* name */ | |
1150 | FALSE, /* partial_inplace */ | |
1151 | 0, /* src_mask */ | |
1152 | 0xffff, /* dst_mask */ | |
1153 | FALSE), /* pcrel_offset */ | |
252b5132 | 1154 | |
7619e7c7 AM |
1155 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1156 | HOWTO (R_PPC_GOT_DTPREL16_HA, | |
1157 | 16, /* rightshift */ | |
1158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1159 | 16, /* bitsize */ | |
1160 | FALSE, /* pc_relative */ | |
1161 | 0, /* bitpos */ | |
1162 | complain_overflow_dont, /* complain_on_overflow */ | |
1163 | ppc_elf_unhandled_reloc, /* special_function */ | |
1164 | "R_PPC_GOT_DTPREL16_HA", /* name */ | |
1165 | FALSE, /* partial_inplace */ | |
1166 | 0, /* src_mask */ | |
1167 | 0xffff, /* dst_mask */ | |
1168 | FALSE), /* pcrel_offset */ | |
c3668558 | 1169 | |
7619e7c7 AM |
1170 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
1171 | offset to the entry. */ | |
1172 | HOWTO (R_PPC_GOT_TPREL16, | |
1173 | 0, /* rightshift */ | |
1174 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1175 | 16, /* bitsize */ | |
1176 | FALSE, /* pc_relative */ | |
1177 | 0, /* bitpos */ | |
1178 | complain_overflow_signed, /* complain_on_overflow */ | |
1179 | ppc_elf_unhandled_reloc, /* special_function */ | |
1180 | "R_PPC_GOT_TPREL16", /* name */ | |
1181 | FALSE, /* partial_inplace */ | |
1182 | 0, /* src_mask */ | |
1183 | 0xffff, /* dst_mask */ | |
1184 | FALSE), /* pcrel_offset */ | |
1185 | ||
1186 | /* Like GOT_TPREL16, but no overflow. */ | |
1187 | HOWTO (R_PPC_GOT_TPREL16_LO, | |
1188 | 0, /* rightshift */ | |
1189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 16, /* bitsize */ | |
1191 | FALSE, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
1193 | complain_overflow_dont, /* complain_on_overflow */ | |
1194 | ppc_elf_unhandled_reloc, /* special_function */ | |
1195 | "R_PPC_GOT_TPREL16_LO", /* name */ | |
1196 | FALSE, /* partial_inplace */ | |
1197 | 0, /* src_mask */ | |
1198 | 0xffff, /* dst_mask */ | |
1199 | FALSE), /* pcrel_offset */ | |
1200 | ||
1201 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
1202 | HOWTO (R_PPC_GOT_TPREL16_HI, | |
1203 | 16, /* rightshift */ | |
1204 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1205 | 16, /* bitsize */ | |
1206 | FALSE, /* pc_relative */ | |
1207 | 0, /* bitpos */ | |
1208 | complain_overflow_dont, /* complain_on_overflow */ | |
1209 | ppc_elf_unhandled_reloc, /* special_function */ | |
1210 | "R_PPC_GOT_TPREL16_HI", /* name */ | |
1211 | FALSE, /* partial_inplace */ | |
1212 | 0, /* src_mask */ | |
1213 | 0xffff, /* dst_mask */ | |
1214 | FALSE), /* pcrel_offset */ | |
1215 | ||
1216 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
1217 | HOWTO (R_PPC_GOT_TPREL16_HA, | |
1218 | 16, /* rightshift */ | |
1219 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1220 | 16, /* bitsize */ | |
1221 | FALSE, /* pc_relative */ | |
1222 | 0, /* bitpos */ | |
1223 | complain_overflow_dont, /* complain_on_overflow */ | |
1224 | ppc_elf_unhandled_reloc, /* special_function */ | |
1225 | "R_PPC_GOT_TPREL16_HA", /* name */ | |
1226 | FALSE, /* partial_inplace */ | |
1227 | 0, /* src_mask */ | |
1228 | 0xffff, /* dst_mask */ | |
1229 | FALSE), /* pcrel_offset */ | |
1230 | ||
1231 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
1232 | in the SVR4 ELF ABI. */ | |
1233 | ||
1234 | /* 32 bit value resulting from the addend minus the symbol. */ | |
1235 | HOWTO (R_PPC_EMB_NADDR32, /* type */ | |
1236 | 0, /* rightshift */ | |
1237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1238 | 32, /* bitsize */ | |
1239 | FALSE, /* pc_relative */ | |
1240 | 0, /* bitpos */ | |
86c95733 | 1241 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1242 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1243 | "R_PPC_EMB_NADDR32", /* name */ |
1244 | FALSE, /* partial_inplace */ | |
1245 | 0, /* src_mask */ | |
1246 | 0xffffffff, /* dst_mask */ | |
1247 | FALSE), /* pcrel_offset */ | |
1248 | ||
1249 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1250 | HOWTO (R_PPC_EMB_NADDR16, /* type */ | |
1251 | 0, /* rightshift */ | |
1252 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1253 | 16, /* bitsize */ | |
1254 | FALSE, /* pc_relative */ | |
1255 | 0, /* bitpos */ | |
86c95733 | 1256 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1257 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1258 | "R_PPC_EMB_NADDR16", /* name */ |
1259 | FALSE, /* partial_inplace */ | |
1260 | 0, /* src_mask */ | |
1261 | 0xffff, /* dst_mask */ | |
1262 | FALSE), /* pcrel_offset */ | |
1263 | ||
1264 | /* 16 bit value resulting from the addend minus the symbol. */ | |
1265 | HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ | |
1266 | 0, /* rightshift */ | |
1267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1268 | 16, /* bitsize */ | |
1269 | FALSE, /* pc_relative */ | |
1270 | 0, /* bitpos */ | |
1271 | complain_overflow_dont,/* complain_on_overflow */ | |
3ce51288 | 1272 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1273 | "R_PPC_EMB_ADDR16_LO", /* name */ |
1274 | FALSE, /* partial_inplace */ | |
1275 | 0, /* src_mask */ | |
1276 | 0xffff, /* dst_mask */ | |
1277 | FALSE), /* pcrel_offset */ | |
1278 | ||
1279 | /* The high order 16 bits of the addend minus the symbol. */ | |
1280 | HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ | |
1281 | 16, /* rightshift */ | |
1282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1283 | 16, /* bitsize */ | |
1284 | FALSE, /* pc_relative */ | |
1285 | 0, /* bitpos */ | |
1286 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1287 | ppc_elf_unhandled_reloc, /* special_function */ |
7619e7c7 AM |
1288 | "R_PPC_EMB_NADDR16_HI", /* name */ |
1289 | FALSE, /* partial_inplace */ | |
1290 | 0, /* src_mask */ | |
1291 | 0xffff, /* dst_mask */ | |
1292 | FALSE), /* pcrel_offset */ | |
1293 | ||
1294 | /* The high order 16 bits of the result of the addend minus the address, | |
1295 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
1296 | is negative. */ | |
1297 | HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ | |
1298 | 16, /* rightshift */ | |
1299 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1300 | 16, /* bitsize */ | |
1301 | FALSE, /* pc_relative */ | |
1302 | 0, /* bitpos */ | |
1303 | complain_overflow_dont, /* complain_on_overflow */ | |
3ce51288 | 1304 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1305 | "R_PPC_EMB_NADDR16_HA", /* name */ |
1306 | FALSE, /* partial_inplace */ | |
1307 | 0, /* src_mask */ | |
1308 | 0xffff, /* dst_mask */ | |
1309 | FALSE), /* pcrel_offset */ | |
1310 | ||
1311 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1312 | address in the .sdata section, and returning the offset from | |
1313 | _SDA_BASE_ for that relocation. */ | |
1314 | HOWTO (R_PPC_EMB_SDAI16, /* type */ | |
1315 | 0, /* rightshift */ | |
1316 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1317 | 16, /* bitsize */ | |
1318 | FALSE, /* pc_relative */ | |
1319 | 0, /* bitpos */ | |
bd6c6e2b | 1320 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1321 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1322 | "R_PPC_EMB_SDAI16", /* name */ |
1323 | FALSE, /* partial_inplace */ | |
1324 | 0, /* src_mask */ | |
1325 | 0xffff, /* dst_mask */ | |
1326 | FALSE), /* pcrel_offset */ | |
1327 | ||
1328 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
1329 | address in the .sdata2 section, and returning the offset from | |
1330 | _SDA2_BASE_ for that relocation. */ | |
1331 | HOWTO (R_PPC_EMB_SDA2I16, /* type */ | |
1332 | 0, /* rightshift */ | |
1333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 16, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
bd6c6e2b | 1337 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1338 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1339 | "R_PPC_EMB_SDA2I16", /* name */ |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0, /* src_mask */ | |
1342 | 0xffff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
1345 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
1346 | small data items. */ | |
1347 | HOWTO (R_PPC_EMB_SDA2REL, /* type */ | |
1348 | 0, /* rightshift */ | |
1349 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 16, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1354 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1355 | "R_PPC_EMB_SDA2REL", /* name */ |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0, /* src_mask */ | |
1358 | 0xffff, /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
1362 | signed offset from the appropriate base, and filling in the register | |
1363 | field with the appropriate register (0, 2, or 13). */ | |
1364 | HOWTO (R_PPC_EMB_SDA21, /* type */ | |
1365 | 0, /* rightshift */ | |
1366 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1367 | 16, /* bitsize */ | |
1368 | FALSE, /* pc_relative */ | |
1369 | 0, /* bitpos */ | |
1370 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1371 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1372 | "R_PPC_EMB_SDA21", /* name */ |
1373 | FALSE, /* partial_inplace */ | |
1374 | 0, /* src_mask */ | |
1375 | 0xffff, /* dst_mask */ | |
1376 | FALSE), /* pcrel_offset */ | |
1377 | ||
1378 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
1379 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
1380 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
1381 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
1382 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
1383 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
1384 | ||
1385 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
1386 | in the 16 bit signed offset from the appropriate base, and filling in the | |
1387 | register field with the appropriate register (0, 2, or 13). */ | |
1388 | HOWTO (R_PPC_EMB_RELSDA, /* type */ | |
1389 | 0, /* rightshift */ | |
1390 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1391 | 16, /* bitsize */ | |
ddfd6795 | 1392 | FALSE, /* pc_relative */ |
25dbc73a AM |
1393 | 0, /* bitpos */ |
1394 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 1395 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a AM |
1396 | "R_PPC_EMB_RELSDA", /* name */ |
1397 | FALSE, /* partial_inplace */ | |
1398 | 0, /* src_mask */ | |
1399 | 0xffff, /* dst_mask */ | |
1400 | FALSE), /* pcrel_offset */ | |
1401 | ||
b9c361e0 JL |
1402 | /* A relative 8 bit branch. */ |
1403 | HOWTO (R_PPC_VLE_REL8, /* type */ | |
1404 | 1, /* rightshift */ | |
1405 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1406 | 8, /* bitsize */ | |
1407 | TRUE, /* pc_relative */ | |
1408 | 0, /* bitpos */ | |
1409 | complain_overflow_signed, /* complain_on_overflow */ | |
1410 | bfd_elf_generic_reloc, /* special_function */ | |
1411 | "R_PPC_VLE_REL8", /* name */ | |
1412 | FALSE, /* partial_inplace */ | |
1413 | 0, /* src_mask */ | |
1414 | 0xff, /* dst_mask */ | |
1415 | TRUE), /* pcrel_offset */ | |
68ffbac6 | 1416 | |
b9c361e0 JL |
1417 | /* A relative 15 bit branch. */ |
1418 | HOWTO (R_PPC_VLE_REL15, /* type */ | |
1419 | 1, /* rightshift */ | |
1420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1421 | 15, /* bitsize */ | |
1422 | TRUE, /* pc_relative */ | |
1423 | 1, /* bitpos */ | |
1424 | complain_overflow_signed, /* complain_on_overflow */ | |
1425 | bfd_elf_generic_reloc, /* special_function */ | |
1426 | "R_PPC_VLE_REL15", /* name */ | |
1427 | FALSE, /* partial_inplace */ | |
1428 | 0, /* src_mask */ | |
dfdaec14 | 1429 | 0xfffe, /* dst_mask */ |
b9c361e0 JL |
1430 | TRUE), /* pcrel_offset */ |
1431 | ||
68ffbac6 | 1432 | /* A relative 24 bit branch. */ |
b9c361e0 JL |
1433 | HOWTO (R_PPC_VLE_REL24, /* type */ |
1434 | 1, /* rightshift */ | |
1435 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1436 | 24, /* bitsize */ | |
1437 | TRUE, /* pc_relative */ | |
1438 | 1, /* bitpos */ | |
1439 | complain_overflow_signed, /* complain_on_overflow */ | |
1440 | bfd_elf_generic_reloc, /* special_function */ | |
1441 | "R_PPC_VLE_REL24", /* name */ | |
1442 | FALSE, /* partial_inplace */ | |
1443 | 0, /* src_mask */ | |
1444 | 0x1fffffe, /* dst_mask */ | |
1445 | TRUE), /* pcrel_offset */ | |
1446 | ||
1447 | /* The 16 LSBS in split16a format. */ | |
1448 | HOWTO (R_PPC_VLE_LO16A, /* type */ | |
1449 | 0, /* rightshift */ | |
1450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1451 | 16, /* bitsize */ |
bdaacd3a | 1452 | FALSE, /* pc_relative */ |
b9c361e0 | 1453 | 0, /* bitpos */ |
86c95733 | 1454 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1455 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1456 | "R_PPC_VLE_LO16A", /* name */ |
1457 | FALSE, /* partial_inplace */ | |
1458 | 0, /* src_mask */ | |
08dc996f | 1459 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1460 | FALSE), /* pcrel_offset */ |
1461 | ||
1462 | /* The 16 LSBS in split16d format. */ | |
1463 | HOWTO (R_PPC_VLE_LO16D, /* type */ | |
1464 | 0, /* rightshift */ | |
1465 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1466 | 16, /* bitsize */ |
b9c361e0 JL |
1467 | FALSE, /* pc_relative */ |
1468 | 0, /* bitpos */ | |
86c95733 | 1469 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1470 | ppc_elf_unhandled_reloc, /* special_function */ |
1471 | "R_PPC_VLE_LO16D", /* name */ | |
b9c361e0 JL |
1472 | FALSE, /* partial_inplace */ |
1473 | 0, /* src_mask */ | |
5499c7c7 | 1474 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1475 | FALSE), /* pcrel_offset */ |
1476 | ||
1477 | /* Bits 16-31 split16a format. */ | |
1478 | HOWTO (R_PPC_VLE_HI16A, /* type */ | |
86c95733 | 1479 | 16, /* rightshift */ |
b9c361e0 | 1480 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1481 | 16, /* bitsize */ |
b9c361e0 JL |
1482 | FALSE, /* pc_relative */ |
1483 | 0, /* bitpos */ | |
86c95733 | 1484 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1485 | ppc_elf_unhandled_reloc, /* special_function */ |
1486 | "R_PPC_VLE_HI16A", /* name */ | |
b9c361e0 JL |
1487 | FALSE, /* partial_inplace */ |
1488 | 0, /* src_mask */ | |
08dc996f | 1489 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1490 | FALSE), /* pcrel_offset */ |
1491 | ||
1492 | /* Bits 16-31 split16d format. */ | |
1493 | HOWTO (R_PPC_VLE_HI16D, /* type */ | |
86c95733 | 1494 | 16, /* rightshift */ |
b9c361e0 | 1495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1496 | 16, /* bitsize */ |
b9c361e0 JL |
1497 | FALSE, /* pc_relative */ |
1498 | 0, /* bitpos */ | |
86c95733 | 1499 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1500 | ppc_elf_unhandled_reloc, /* special_function */ |
1501 | "R_PPC_VLE_HI16D", /* name */ | |
b9c361e0 JL |
1502 | FALSE, /* partial_inplace */ |
1503 | 0, /* src_mask */ | |
5499c7c7 | 1504 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1505 | FALSE), /* pcrel_offset */ |
1506 | ||
1507 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
1508 | HOWTO (R_PPC_VLE_HA16A, /* type */ | |
86c95733 | 1509 | 16, /* rightshift */ |
b9c361e0 | 1510 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1511 | 16, /* bitsize */ |
b9c361e0 JL |
1512 | FALSE, /* pc_relative */ |
1513 | 0, /* bitpos */ | |
86c95733 | 1514 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1515 | ppc_elf_unhandled_reloc, /* special_function */ |
1516 | "R_PPC_VLE_HA16A", /* name */ | |
b9c361e0 JL |
1517 | FALSE, /* partial_inplace */ |
1518 | 0, /* src_mask */ | |
08dc996f | 1519 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1520 | FALSE), /* pcrel_offset */ |
1521 | ||
1522 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
1523 | HOWTO (R_PPC_VLE_HA16D, /* type */ | |
86c95733 | 1524 | 16, /* rightshift */ |
b9c361e0 | 1525 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1526 | 16, /* bitsize */ |
b9c361e0 JL |
1527 | FALSE, /* pc_relative */ |
1528 | 0, /* bitpos */ | |
86c95733 | 1529 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 AM |
1530 | ppc_elf_unhandled_reloc, /* special_function */ |
1531 | "R_PPC_VLE_HA16D", /* name */ | |
b9c361e0 JL |
1532 | FALSE, /* partial_inplace */ |
1533 | 0, /* src_mask */ | |
5499c7c7 | 1534 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1535 | FALSE), /* pcrel_offset */ |
1536 | ||
86c95733 AM |
1537 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
1538 | instructions. If the register base is 0 then the linker changes | |
1539 | the e_add16i to an e_li instruction. */ | |
1540 | HOWTO (R_PPC_VLE_SDA21, /* type */ | |
b9c361e0 JL |
1541 | 0, /* rightshift */ |
1542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1543 | 16, /* bitsize */ |
b9c361e0 JL |
1544 | FALSE, /* pc_relative */ |
1545 | 0, /* bitpos */ | |
86c95733 | 1546 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 AM |
1547 | ppc_elf_unhandled_reloc, /* special_function */ |
1548 | "R_PPC_VLE_SDA21", /* name */ | |
b9c361e0 JL |
1549 | FALSE, /* partial_inplace */ |
1550 | 0, /* src_mask */ | |
1551 | 0xffff, /* dst_mask */ | |
1552 | FALSE), /* pcrel_offset */ | |
1553 | ||
86c95733 | 1554 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
b9c361e0 JL |
1555 | HOWTO (R_PPC_VLE_SDA21_LO, /* type */ |
1556 | 0, /* rightshift */ | |
1557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1558 | 16, /* bitsize */ |
b9c361e0 JL |
1559 | FALSE, /* pc_relative */ |
1560 | 0, /* bitpos */ | |
86c95733 | 1561 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1562 | ppc_elf_unhandled_reloc, /* special_function */ |
b9c361e0 JL |
1563 | "R_PPC_VLE_SDA21_LO", /* name */ |
1564 | FALSE, /* partial_inplace */ | |
1565 | 0, /* src_mask */ | |
86c95733 | 1566 | 0xffff, /* dst_mask */ |
b9c361e0 JL |
1567 | FALSE), /* pcrel_offset */ |
1568 | ||
1569 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
1570 | HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */ | |
1571 | 0, /* rightshift */ | |
1572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1573 | 16, /* bitsize */ |
b9c361e0 JL |
1574 | FALSE, /* pc_relative */ |
1575 | 0, /* bitpos */ | |
3ce51288 AM |
1576 | complain_overflow_dont, /* complain_on_overflow */ |
1577 | ppc_elf_unhandled_reloc, /* special_function */ | |
1578 | "R_PPC_VLE_SDAREL_LO16A", /* name */ | |
b9c361e0 JL |
1579 | FALSE, /* partial_inplace */ |
1580 | 0, /* src_mask */ | |
08dc996f | 1581 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1582 | FALSE), /* pcrel_offset */ |
1583 | ||
1584 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
b9c361e0 JL |
1585 | HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */ |
1586 | 0, /* rightshift */ | |
1587 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
86c95733 | 1588 | 16, /* bitsize */ |
b9c361e0 JL |
1589 | FALSE, /* pc_relative */ |
1590 | 0, /* bitpos */ | |
3ce51288 AM |
1591 | complain_overflow_dont, /* complain_on_overflow */ |
1592 | ppc_elf_unhandled_reloc, /* special_function */ | |
1593 | "R_PPC_VLE_SDAREL_LO16D", /* name */ | |
b9c361e0 JL |
1594 | FALSE, /* partial_inplace */ |
1595 | 0, /* src_mask */ | |
5499c7c7 | 1596 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1597 | FALSE), /* pcrel_offset */ |
1598 | ||
1599 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
3ce51288 | 1600 | HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */ |
86c95733 | 1601 | 16, /* rightshift */ |
b9c361e0 | 1602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1603 | 16, /* bitsize */ |
b9c361e0 JL |
1604 | FALSE, /* pc_relative */ |
1605 | 0, /* bitpos */ | |
3ce51288 AM |
1606 | complain_overflow_dont, /* complain_on_overflow */ |
1607 | ppc_elf_unhandled_reloc, /* special_function */ | |
1608 | "R_PPC_VLE_SDAREL_HI16A", /* name */ | |
b9c361e0 JL |
1609 | FALSE, /* partial_inplace */ |
1610 | 0, /* src_mask */ | |
08dc996f | 1611 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1612 | FALSE), /* pcrel_offset */ |
1613 | ||
1614 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
3ce51288 | 1615 | HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */ |
86c95733 | 1616 | 16, /* rightshift */ |
b9c361e0 | 1617 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1618 | 16, /* bitsize */ |
b9c361e0 JL |
1619 | FALSE, /* pc_relative */ |
1620 | 0, /* bitpos */ | |
3ce51288 AM |
1621 | complain_overflow_dont, /* complain_on_overflow */ |
1622 | ppc_elf_unhandled_reloc, /* special_function */ | |
1623 | "R_PPC_VLE_SDAREL_HI16D", /* name */ | |
b9c361e0 JL |
1624 | FALSE, /* partial_inplace */ |
1625 | 0, /* src_mask */ | |
5499c7c7 | 1626 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1627 | FALSE), /* pcrel_offset */ |
1628 | ||
1629 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
3ce51288 | 1630 | HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */ |
86c95733 | 1631 | 16, /* rightshift */ |
b9c361e0 | 1632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1633 | 16, /* bitsize */ |
b9c361e0 JL |
1634 | FALSE, /* pc_relative */ |
1635 | 0, /* bitpos */ | |
3ce51288 AM |
1636 | complain_overflow_dont, /* complain_on_overflow */ |
1637 | ppc_elf_unhandled_reloc, /* special_function */ | |
1638 | "R_PPC_VLE_SDAREL_HA16A", /* name */ | |
b9c361e0 JL |
1639 | FALSE, /* partial_inplace */ |
1640 | 0, /* src_mask */ | |
08dc996f | 1641 | 0x1f07ff, /* dst_mask */ |
b9c361e0 JL |
1642 | FALSE), /* pcrel_offset */ |
1643 | ||
1644 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
3ce51288 | 1645 | HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */ |
86c95733 | 1646 | 16, /* rightshift */ |
b9c361e0 | 1647 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
86c95733 | 1648 | 16, /* bitsize */ |
b9c361e0 JL |
1649 | FALSE, /* pc_relative */ |
1650 | 0, /* bitpos */ | |
3ce51288 AM |
1651 | complain_overflow_dont, /* complain_on_overflow */ |
1652 | ppc_elf_unhandled_reloc, /* special_function */ | |
1653 | "R_PPC_VLE_SDAREL_HA16D", /* name */ | |
b9c361e0 JL |
1654 | FALSE, /* partial_inplace */ |
1655 | 0, /* src_mask */ | |
5499c7c7 | 1656 | 0x3e007ff, /* dst_mask */ |
b9c361e0 JL |
1657 | FALSE), /* pcrel_offset */ |
1658 | ||
83eef883 AFB |
1659 | /* e_li split20 format. */ |
1660 | HOWTO (R_PPC_VLE_ADDR20, /* type */ | |
1661 | 16, /* rightshift */ | |
1662 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1663 | 20, /* bitsize */ | |
1664 | FALSE, /* pc_relative */ | |
1665 | 0, /* bitpos */ | |
1666 | complain_overflow_dont, /* complain_on_overflow */ | |
1667 | bfd_elf_generic_reloc, /* special_function */ | |
1668 | "R_PPC_VLE_ADDR20", /* name */ | |
1669 | FALSE, /* partial_inplace */ | |
1670 | 0, /* src_mask */ | |
1671 | 0x1f07ff, /* dst_mask */ | |
1672 | FALSE), /* pcrel_offset */ | |
1673 | ||
e054468f AM |
1674 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1675 | 0, /* rightshift */ | |
1676 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1677 | 32, /* bitsize */ | |
1678 | FALSE, /* pc_relative */ | |
1679 | 0, /* bitpos */ | |
86c95733 | 1680 | complain_overflow_dont, /* complain_on_overflow */ |
3ce51288 | 1681 | ppc_elf_unhandled_reloc, /* special_function */ |
e054468f AM |
1682 | "R_PPC_IRELATIVE", /* name */ |
1683 | FALSE, /* partial_inplace */ | |
1684 | 0, /* src_mask */ | |
1685 | 0xffffffff, /* dst_mask */ | |
1686 | FALSE), /* pcrel_offset */ | |
1687 | ||
d7128ce4 AM |
1688 | /* A 16 bit relative relocation. */ |
1689 | HOWTO (R_PPC_REL16, /* type */ | |
1690 | 0, /* rightshift */ | |
1691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1692 | 16, /* bitsize */ | |
1693 | TRUE, /* pc_relative */ | |
1694 | 0, /* bitpos */ | |
86c95733 | 1695 | complain_overflow_signed, /* complain_on_overflow */ |
d7128ce4 AM |
1696 | bfd_elf_generic_reloc, /* special_function */ |
1697 | "R_PPC_REL16", /* name */ | |
1698 | FALSE, /* partial_inplace */ | |
1699 | 0, /* src_mask */ | |
1700 | 0xffff, /* dst_mask */ | |
1701 | TRUE), /* pcrel_offset */ | |
1702 | ||
1703 | /* A 16 bit relative relocation without overflow. */ | |
1704 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1705 | 0, /* rightshift */ | |
1706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1707 | 16, /* bitsize */ | |
1708 | TRUE, /* pc_relative */ | |
1709 | 0, /* bitpos */ | |
1710 | complain_overflow_dont,/* complain_on_overflow */ | |
1711 | bfd_elf_generic_reloc, /* special_function */ | |
1712 | "R_PPC_REL16_LO", /* name */ | |
1713 | FALSE, /* partial_inplace */ | |
1714 | 0, /* src_mask */ | |
1715 | 0xffff, /* dst_mask */ | |
1716 | TRUE), /* pcrel_offset */ | |
1717 | ||
1718 | /* The high order 16 bits of a relative address. */ | |
1719 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1720 | 16, /* rightshift */ | |
1721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1722 | 16, /* bitsize */ | |
1723 | TRUE, /* pc_relative */ | |
1724 | 0, /* bitpos */ | |
1725 | complain_overflow_dont, /* complain_on_overflow */ | |
1726 | bfd_elf_generic_reloc, /* special_function */ | |
1727 | "R_PPC_REL16_HI", /* name */ | |
1728 | FALSE, /* partial_inplace */ | |
1729 | 0, /* src_mask */ | |
1730 | 0xffff, /* dst_mask */ | |
1731 | TRUE), /* pcrel_offset */ | |
1732 | ||
1733 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1734 | the low 16 bits, treated as a signed number, is negative. */ | |
1735 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1736 | 16, /* rightshift */ | |
1737 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1738 | 16, /* bitsize */ | |
1739 | TRUE, /* pc_relative */ | |
1740 | 0, /* bitpos */ | |
1741 | complain_overflow_dont, /* complain_on_overflow */ | |
1742 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1743 | "R_PPC_REL16_HA", /* name */ | |
1744 | FALSE, /* partial_inplace */ | |
1745 | 0, /* src_mask */ | |
1746 | 0xffff, /* dst_mask */ | |
1747 | TRUE), /* pcrel_offset */ | |
1748 | ||
a680de9a PB |
1749 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
1750 | HOWTO (R_PPC_REL16DX_HA, /* type */ | |
1751 | 16, /* rightshift */ | |
1752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1753 | 16, /* bitsize */ | |
1754 | TRUE, /* pc_relative */ | |
1755 | 0, /* bitpos */ | |
1756 | complain_overflow_signed, /* complain_on_overflow */ | |
1757 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1758 | "R_PPC_REL16DX_HA", /* name */ | |
1759 | FALSE, /* partial_inplace */ | |
1760 | 0, /* src_mask */ | |
1761 | 0x1fffc1, /* dst_mask */ | |
1762 | TRUE), /* pcrel_offset */ | |
1763 | ||
7ba71655 AM |
1764 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
1765 | HOWTO (R_PPC_16DX_HA, /* type */ | |
1766 | 16, /* rightshift */ | |
1767 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1768 | 16, /* bitsize */ | |
1769 | FALSE, /* pc_relative */ | |
1770 | 0, /* bitpos */ | |
1771 | complain_overflow_signed, /* complain_on_overflow */ | |
1772 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1773 | "R_PPC_16DX_HA", /* name */ | |
1774 | FALSE, /* partial_inplace */ | |
1775 | 0, /* src_mask */ | |
1776 | 0x1fffc1, /* dst_mask */ | |
1777 | FALSE), /* pcrel_offset */ | |
1778 | ||
25dbc73a AM |
1779 | /* GNU extension to record C++ vtable hierarchy. */ |
1780 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1781 | 0, /* rightshift */ | |
1782 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1783 | 0, /* bitsize */ | |
1784 | FALSE, /* pc_relative */ | |
1785 | 0, /* bitpos */ | |
1786 | complain_overflow_dont, /* complain_on_overflow */ | |
1787 | NULL, /* special_function */ | |
1788 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1789 | FALSE, /* partial_inplace */ | |
1790 | 0, /* src_mask */ | |
1791 | 0, /* dst_mask */ | |
1792 | FALSE), /* pcrel_offset */ | |
1793 | ||
1794 | /* GNU extension to record C++ vtable member usage. */ | |
1795 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1796 | 0, /* rightshift */ | |
1797 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1798 | 0, /* bitsize */ | |
1799 | FALSE, /* pc_relative */ | |
1800 | 0, /* bitpos */ | |
1801 | complain_overflow_dont, /* complain_on_overflow */ | |
1802 | NULL, /* special_function */ | |
1803 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1804 | FALSE, /* partial_inplace */ |
1805 | 0, /* src_mask */ | |
25dbc73a | 1806 | 0, /* dst_mask */ |
7619e7c7 AM |
1807 | FALSE), /* pcrel_offset */ |
1808 | ||
25dbc73a AM |
1809 | /* Phony reloc to handle AIX style TOC entries. */ |
1810 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1811 | 0, /* rightshift */ |
1812 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1813 | 16, /* bitsize */ | |
1814 | FALSE, /* pc_relative */ | |
1815 | 0, /* bitpos */ | |
25dbc73a | 1816 | complain_overflow_signed, /* complain_on_overflow */ |
3ce51288 | 1817 | ppc_elf_unhandled_reloc, /* special_function */ |
25dbc73a | 1818 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1819 | FALSE, /* partial_inplace */ |
1820 | 0, /* src_mask */ | |
1821 | 0xffff, /* dst_mask */ | |
1822 | FALSE), /* pcrel_offset */ | |
25dbc73a AM |
1823 | }; |
1824 | \f | |
1825 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1826 | ||
1827 | static void | |
1828 | ppc_elf_howto_init (void) | |
1829 | { | |
1830 | unsigned int i, type; | |
1831 | ||
1832 | for (i = 0; | |
1833 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1834 | i++) | |
1835 | { | |
1836 | type = ppc_elf_howto_raw[i].type; | |
1837 | if (type >= (sizeof (ppc_elf_howto_table) | |
1838 | / sizeof (ppc_elf_howto_table[0]))) | |
1839 | abort (); | |
1840 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | static reloc_howto_type * | |
1845 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1846 | bfd_reloc_code_real_type code) | |
1847 | { | |
1848 | enum elf_ppc_reloc_type r; | |
1849 | ||
1850 | /* Initialize howto table if not already done. */ | |
1851 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1852 | ppc_elf_howto_init (); | |
1853 | ||
1854 | switch (code) | |
1855 | { | |
1856 | default: | |
1857 | return NULL; | |
1858 | ||
1859 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1860 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1861 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 1862 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 1863 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 1864 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
1865 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
1866 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1867 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1868 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1869 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1870 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1871 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1872 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1873 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1874 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 1875 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 1876 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 1877 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
1878 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
1879 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1880 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1881 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1882 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1883 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1884 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1885 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1886 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1887 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 1888 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
1889 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
1890 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1891 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1892 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 1893 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 1894 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 1895 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
1896 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
1897 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1898 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1899 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 1900 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
1901 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
1902 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1903 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1904 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 1905 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 1906 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 1907 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 1908 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
1909 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
1910 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1911 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1912 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 1913 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 1914 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 1915 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
1916 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
1917 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1918 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1919 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1920 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1921 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1922 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1923 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1924 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1925 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1926 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1927 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1928 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1929 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1930 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1931 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1932 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1933 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1934 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1935 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1936 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1937 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1938 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1939 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1940 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1941 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1942 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1943 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1944 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1945 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1946 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1947 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1948 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1949 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1950 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1951 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
1952 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
1953 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
1954 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
1955 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
1956 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
1957 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
1958 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
1959 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
1960 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
1961 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
1962 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
1963 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
1964 | r = R_PPC_VLE_SDAREL_LO16A; | |
1965 | break; | |
1966 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
1967 | r = R_PPC_VLE_SDAREL_LO16D; | |
1968 | break; | |
1969 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
1970 | r = R_PPC_VLE_SDAREL_HI16A; | |
1971 | break; | |
1972 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
1973 | r = R_PPC_VLE_SDAREL_HI16D; | |
1974 | break; | |
1975 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
1976 | r = R_PPC_VLE_SDAREL_HA16A; | |
1977 | break; | |
1978 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
1979 | r = R_PPC_VLE_SDAREL_HA16D; | |
1980 | break; | |
d7128ce4 AM |
1981 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1982 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1983 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1984 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
7ba71655 | 1985 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break; |
a680de9a | 1986 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
1987 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1988 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1989 | } | |
1990 | ||
1991 | return ppc_elf_howto_table[r]; | |
1992 | }; | |
1993 | ||
157090f7 AM |
1994 | static reloc_howto_type * |
1995 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1996 | const char *r_name) | |
1997 | { | |
1998 | unsigned int i; | |
1999 | ||
2000 | for (i = 0; | |
2001 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
2002 | i++) | |
2003 | if (ppc_elf_howto_raw[i].name != NULL | |
2004 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
2005 | return &ppc_elf_howto_raw[i]; | |
2006 | ||
2007 | return NULL; | |
2008 | } | |
2009 | ||
25dbc73a AM |
2010 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2011 | ||
2012 | static void | |
4aef7643 | 2013 | ppc_elf_info_to_howto (bfd *abfd, |
25dbc73a AM |
2014 | arelent *cache_ptr, |
2015 | Elf_Internal_Rela *dst) | |
2016 | { | |
cd21f5da NC |
2017 | unsigned int r_type; |
2018 | ||
25dbc73a AM |
2019 | /* Initialize howto table if not already done. */ |
2020 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2021 | ppc_elf_howto_init (); | |
2022 | ||
cd21f5da NC |
2023 | r_type = ELF32_R_TYPE (dst->r_info); |
2024 | if (r_type >= R_PPC_max) | |
2025 | { | |
695344c0 | 2026 | /* xgettext:c-format */ |
4eca0228 AM |
2027 | _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"), |
2028 | abfd, r_type); | |
cd21f5da NC |
2029 | bfd_set_error (bfd_error_bad_value); |
2030 | r_type = R_PPC_NONE; | |
2031 | } | |
2032 | cache_ptr->howto = ppc_elf_howto_table[r_type]; | |
375de94a AM |
2033 | |
2034 | /* Just because the above assert didn't trigger doesn't mean that | |
2035 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
2036 | if (!cache_ptr->howto) | |
2037 | { | |
695344c0 | 2038 | /* xgettext:c-format */ |
4eca0228 AM |
2039 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
2040 | abfd, r_type); | |
375de94a AM |
2041 | bfd_set_error (bfd_error_bad_value); |
2042 | ||
2043 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
2044 | } | |
25dbc73a AM |
2045 | } |
2046 | ||
d7128ce4 | 2047 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
2048 | |
2049 | static bfd_reloc_status_type | |
4aef7643 | 2050 | ppc_elf_addr16_ha_reloc (bfd *abfd, |
25dbc73a AM |
2051 | arelent *reloc_entry, |
2052 | asymbol *symbol, | |
4aef7643 | 2053 | void *data, |
25dbc73a AM |
2054 | asection *input_section, |
2055 | bfd *output_bfd, | |
2056 | char **error_message ATTRIBUTE_UNUSED) | |
2057 | { | |
a680de9a PB |
2058 | enum elf_ppc_reloc_type r_type; |
2059 | long insn; | |
2060 | bfd_size_type octets; | |
2061 | bfd_vma value; | |
25dbc73a AM |
2062 | |
2063 | if (output_bfd != NULL) | |
2064 | { | |
2065 | reloc_entry->address += input_section->output_offset; | |
2066 | return bfd_reloc_ok; | |
2067 | } | |
2068 | ||
a680de9a PB |
2069 | reloc_entry->addend += 0x8000; |
2070 | r_type = reloc_entry->howto->type; | |
2071 | if (r_type != R_PPC_REL16DX_HA) | |
2072 | return bfd_reloc_continue; | |
2073 | ||
2074 | value = 0; | |
2075 | if (!bfd_is_com_section (symbol->section)) | |
2076 | value = symbol->value; | |
2077 | value += (reloc_entry->addend | |
2078 | + symbol->section->output_offset | |
2079 | + symbol->section->output_section->vma); | |
2080 | value -= (reloc_entry->address | |
2081 | + input_section->output_offset | |
2082 | + input_section->output_section->vma); | |
2083 | value >>= 16; | |
2084 | ||
2085 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2086 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2087 | insn &= ~0x1fffc1; | |
2088 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2089 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
2090 | return bfd_reloc_ok; | |
25dbc73a AM |
2091 | } |
2092 | ||
2093 | static bfd_reloc_status_type | |
2094 | ppc_elf_unhandled_reloc (bfd *abfd, | |
2095 | arelent *reloc_entry, | |
2096 | asymbol *symbol, | |
2097 | void *data, | |
2098 | asection *input_section, | |
2099 | bfd *output_bfd, | |
2100 | char **error_message) | |
2101 | { | |
2102 | /* If this is a relocatable link (output_bfd test tells us), just | |
2103 | call the generic function. Any adjustment will be done at final | |
2104 | link time. */ | |
2105 | if (output_bfd != NULL) | |
2106 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2107 | input_section, output_bfd, error_message); | |
2108 | ||
2109 | if (error_message != NULL) | |
2110 | { | |
2111 | static char buf[60]; | |
2112 | sprintf (buf, _("generic linker can't handle %s"), | |
2113 | reloc_entry->howto->name); | |
2114 | *error_message = buf; | |
2115 | } | |
2116 | return bfd_reloc_dangerous; | |
2117 | } | |
2118 | \f | |
2119 | /* Sections created by the linker. */ | |
2120 | ||
2121 | typedef struct elf_linker_section | |
2122 | { | |
c9a2f333 | 2123 | /* Pointer to the bfd section. */ |
25dbc73a | 2124 | asection *section; |
c9a2f333 AM |
2125 | /* Section name. */ |
2126 | const char *name; | |
2127 | /* Associated bss section name. */ | |
2128 | const char *bss_name; | |
2129 | /* Associated symbol name. */ | |
2130 | const char *sym_name; | |
046183de AM |
2131 | /* Associated symbol. */ |
2132 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
2133 | } elf_linker_section_t; |
2134 | ||
2135 | /* Linked list of allocated pointer entries. This hangs off of the | |
2136 | symbol lists, and provides allows us to return different pointers, | |
2137 | based on different addend's. */ | |
2138 | ||
2139 | typedef struct elf_linker_section_pointers | |
2140 | { | |
2141 | /* next allocated pointer for this symbol */ | |
2142 | struct elf_linker_section_pointers *next; | |
2143 | /* offset of pointer from beginning of section */ | |
2144 | bfd_vma offset; | |
2145 | /* addend used */ | |
2146 | bfd_vma addend; | |
2147 | /* which linker section this is */ | |
2148 | elf_linker_section_t *lsect; | |
25dbc73a AM |
2149 | } elf_linker_section_pointers_t; |
2150 | ||
2151 | struct ppc_elf_obj_tdata | |
2152 | { | |
2153 | struct elf_obj_tdata elf; | |
2154 | ||
2155 | /* A mapping from local symbols to offsets into the various linker | |
2156 | sections added. This is index by the symbol index. */ | |
2157 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
2158 | |
2159 | /* Flags used to auto-detect plt type. */ | |
2160 | unsigned int makes_plt_call : 1; | |
2161 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
2162 | }; |
2163 | ||
2164 | #define ppc_elf_tdata(bfd) \ | |
2165 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 2166 | |
25dbc73a AM |
2167 | #define elf_local_ptr_offsets(bfd) \ |
2168 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 2169 | |
0c8d6e5c AM |
2170 | #define is_ppc_elf(bfd) \ |
2171 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2172 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 2173 | |
25dbc73a | 2174 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 2175 | |
25dbc73a AM |
2176 | static bfd_boolean |
2177 | ppc_elf_mkobject (bfd *abfd) | |
2178 | { | |
0ffa91dd | 2179 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 2180 | PPC32_ELF_DATA); |
25dbc73a | 2181 | } |
7619e7c7 | 2182 | |
14b57c7c AM |
2183 | /* When defaulting arch/mach, decode apuinfo to find a better match. */ |
2184 | ||
2185 | bfd_boolean | |
2186 | _bfd_elf_ppc_set_arch (bfd *abfd) | |
2187 | { | |
2188 | unsigned long mach = 0; | |
2189 | asection *s; | |
2190 | unsigned char *contents; | |
2191 | ||
2192 | if (abfd->arch_info->bits_per_word == 32 | |
2193 | && bfd_big_endian (abfd)) | |
2194 | { | |
2195 | ||
2196 | for (s = abfd->sections; s != NULL; s = s->next) | |
2197 | if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0) | |
2198 | break; | |
2199 | if (s != NULL) | |
2200 | mach = bfd_mach_ppc_vle; | |
2201 | } | |
2202 | ||
2203 | if (mach == 0) | |
2204 | { | |
2205 | s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
2206 | if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents)) | |
2207 | { | |
2208 | unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4); | |
2209 | unsigned int i; | |
2210 | ||
2211 | for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4) | |
2212 | { | |
2213 | unsigned int val = bfd_get_32 (abfd, contents + i); | |
2214 | switch (val >> 16) | |
2215 | { | |
2216 | case PPC_APUINFO_PMR: | |
2217 | case PPC_APUINFO_RFMCI: | |
2218 | if (mach == 0) | |
2219 | mach = bfd_mach_ppc_titan; | |
2220 | break; | |
2221 | ||
2222 | case PPC_APUINFO_ISEL: | |
2223 | case PPC_APUINFO_CACHELCK: | |
2224 | if (mach == bfd_mach_ppc_titan) | |
2225 | mach = bfd_mach_ppc_e500mc; | |
2226 | break; | |
2227 | ||
2228 | case PPC_APUINFO_SPE: | |
2229 | case PPC_APUINFO_EFS: | |
2230 | case PPC_APUINFO_BRLOCK: | |
2231 | if (mach != bfd_mach_ppc_vle) | |
2232 | mach = bfd_mach_ppc_e500; | |
8941017b | 2233 | break; |
14b57c7c AM |
2234 | |
2235 | case PPC_APUINFO_VLE: | |
2236 | mach = bfd_mach_ppc_vle; | |
2237 | break; | |
2238 | ||
2239 | default: | |
2240 | mach = -1ul; | |
2241 | } | |
2242 | } | |
2243 | free (contents); | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | if (mach != 0 && mach != -1ul) | |
2248 | { | |
2249 | const bfd_arch_info_type *arch; | |
2250 | ||
2251 | for (arch = abfd->arch_info->next; arch; arch = arch->next) | |
2252 | if (arch->mach == mach) | |
2253 | { | |
2254 | abfd->arch_info = arch; | |
2255 | break; | |
2256 | } | |
2257 | } | |
2258 | return TRUE; | |
2259 | } | |
2260 | ||
25dbc73a | 2261 | /* Fix bad default arch selected for a 32 bit input bfd when the |
14b57c7c | 2262 | default is 64 bit. Also select arch based on apuinfo. */ |
7619e7c7 | 2263 | |
25dbc73a AM |
2264 | static bfd_boolean |
2265 | ppc_elf_object_p (bfd *abfd) | |
2266 | { | |
14b57c7c AM |
2267 | if (!abfd->arch_info->the_default) |
2268 | return TRUE; | |
2269 | ||
2270 | if (abfd->arch_info->bits_per_word == 64) | |
25dbc73a AM |
2271 | { |
2272 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 2273 | |
25dbc73a AM |
2274 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
2275 | { | |
2276 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2277 | abfd->arch_info = abfd->arch_info->next; | |
2278 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2279 | } | |
2280 | } | |
14b57c7c | 2281 | return _bfd_elf_ppc_set_arch (abfd); |
25dbc73a | 2282 | } |
7619e7c7 | 2283 | |
25dbc73a | 2284 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 2285 | |
25dbc73a AM |
2286 | static bfd_boolean |
2287 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
2288 | { | |
2289 | BFD_ASSERT (!elf_flags_init (abfd) | |
2290 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 2291 | |
25dbc73a AM |
2292 | elf_elfheader (abfd)->e_flags = flags; |
2293 | elf_flags_init (abfd) = TRUE; | |
2294 | return TRUE; | |
2295 | } | |
2296 | ||
25dbc73a | 2297 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 2298 | |
b34976b6 | 2299 | static bfd_boolean |
25dbc73a | 2300 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 2301 | { |
25dbc73a AM |
2302 | int offset; |
2303 | unsigned int size; | |
252b5132 | 2304 | |
25dbc73a AM |
2305 | switch (note->descsz) |
2306 | { | |
2307 | default: | |
2308 | return FALSE; | |
252b5132 | 2309 | |
25dbc73a AM |
2310 | case 268: /* Linux/PPC. */ |
2311 | /* pr_cursig */ | |
228e534f | 2312 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 2313 | |
25dbc73a | 2314 | /* pr_pid */ |
228e534f | 2315 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 2316 | |
25dbc73a AM |
2317 | /* pr_reg */ |
2318 | offset = 72; | |
2319 | size = 192; | |
deaaf2f3 | 2320 | |
25dbc73a AM |
2321 | break; |
2322 | } | |
deaaf2f3 | 2323 | |
25dbc73a AM |
2324 | /* Make a ".reg/999" section. */ |
2325 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2326 | size, note->descpos + offset); | |
2327 | } | |
252b5132 | 2328 | |
25dbc73a AM |
2329 | static bfd_boolean |
2330 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2331 | { | |
2332 | switch (note->descsz) | |
deaaf2f3 | 2333 | { |
25dbc73a AM |
2334 | default: |
2335 | return FALSE; | |
deaaf2f3 | 2336 | |
25dbc73a | 2337 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 2338 | elf_tdata (abfd)->core->pid |
bc989cdc | 2339 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 2340 | elf_tdata (abfd)->core->program |
25dbc73a | 2341 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 2342 | elf_tdata (abfd)->core->command |
25dbc73a AM |
2343 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
2344 | } | |
9abc968f | 2345 | |
25dbc73a AM |
2346 | /* Note that for some reason, a spurious space is tacked |
2347 | onto the end of the args in some (at least one anyway) | |
2348 | implementations, so strip it off if it exists. */ | |
70bccea4 | 2349 | |
25dbc73a | 2350 | { |
228e534f | 2351 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 2352 | int n = strlen (command); |
70bccea4 | 2353 | |
25dbc73a AM |
2354 | if (0 < n && command[n - 1] == ' ') |
2355 | command[n - 1] = '\0'; | |
2356 | } | |
deaaf2f3 | 2357 | |
25dbc73a AM |
2358 | return TRUE; |
2359 | } | |
deaaf2f3 | 2360 | |
183e98be AM |
2361 | static char * |
2362 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
2363 | { | |
2364 | switch (note_type) | |
2365 | { | |
2366 | default: | |
2367 | return NULL; | |
2368 | ||
2369 | case NT_PRPSINFO: | |
2370 | { | |
2371 | char data[128]; | |
2372 | va_list ap; | |
2373 | ||
2374 | va_start (ap, note_type); | |
75cd47ed | 2375 | memset (data, 0, sizeof (data)); |
183e98be AM |
2376 | strncpy (data + 32, va_arg (ap, const char *), 16); |
2377 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
2378 | va_end (ap); | |
2379 | return elfcore_write_note (abfd, buf, bufsiz, | |
2380 | "CORE", note_type, data, sizeof (data)); | |
2381 | } | |
2382 | ||
2383 | case NT_PRSTATUS: | |
2384 | { | |
2385 | char data[268]; | |
2386 | va_list ap; | |
2387 | long pid; | |
2388 | int cursig; | |
2389 | const void *greg; | |
2390 | ||
2391 | va_start (ap, note_type); | |
2392 | memset (data, 0, 72); | |
2393 | pid = va_arg (ap, long); | |
2394 | bfd_put_32 (abfd, pid, data + 24); | |
2395 | cursig = va_arg (ap, int); | |
2396 | bfd_put_16 (abfd, cursig, data + 12); | |
2397 | greg = va_arg (ap, const void *); | |
2398 | memcpy (data + 72, greg, 192); | |
2399 | memset (data + 264, 0, 4); | |
2400 | va_end (ap); | |
2401 | return elfcore_write_note (abfd, buf, bufsiz, | |
2402 | "CORE", note_type, data, sizeof (data)); | |
2403 | } | |
2404 | } | |
2405 | } | |
2406 | ||
b9c361e0 | 2407 | static flagword |
68ffbac6 | 2408 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
2409 | { |
2410 | ||
2411 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
2412 | return SHF_PPC_VLE; | |
2413 | ||
2414 | return 0; | |
2415 | } | |
2416 | ||
25dbc73a AM |
2417 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2418 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 2419 | |
25dbc73a AM |
2420 | static bfd_vma |
2421 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
2422 | const asection *plt ATTRIBUTE_UNUSED, | |
2423 | const arelent *rel) | |
2424 | { | |
2425 | return rel->address; | |
2426 | } | |
deaaf2f3 | 2427 | |
25dbc73a | 2428 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
2429 | is called when bfd_section_from_shdr finds a section with an unknown |
2430 | type. */ | |
deaaf2f3 | 2431 | |
25dbc73a | 2432 | static bfd_boolean |
6dc132d9 L |
2433 | ppc_elf_section_from_shdr (bfd *abfd, |
2434 | Elf_Internal_Shdr *hdr, | |
2435 | const char *name, | |
2436 | int shindex) | |
25dbc73a AM |
2437 | { |
2438 | asection *newsect; | |
2439 | flagword flags; | |
d1c6de6f | 2440 | |
6dc132d9 | 2441 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 2442 | return FALSE; |
deaaf2f3 | 2443 | |
25dbc73a AM |
2444 | newsect = hdr->bfd_section; |
2445 | flags = bfd_get_section_flags (abfd, newsect); | |
2446 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2447 | flags |= SEC_EXCLUDE; | |
9abc968f | 2448 | |
25dbc73a AM |
2449 | if (hdr->sh_type == SHT_ORDERED) |
2450 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 2451 | |
25dbc73a AM |
2452 | bfd_set_section_flags (abfd, newsect, flags); |
2453 | return TRUE; | |
2454 | } | |
2455 | ||
2456 | /* Set up any other section flags and such that may be necessary. */ | |
2457 | ||
2458 | static bfd_boolean | |
2459 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
2460 | Elf_Internal_Shdr *shdr, | |
2461 | asection *asect) | |
2462 | { | |
25dbc73a AM |
2463 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
2464 | shdr->sh_type = SHT_ORDERED; | |
2465 | ||
2466 | return TRUE; | |
2467 | } | |
2468 | ||
2469 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2470 | need to bump up the number of section headers. */ | |
2471 | ||
2472 | static int | |
a6b96beb AM |
2473 | ppc_elf_additional_program_headers (bfd *abfd, |
2474 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2475 | { |
2476 | asection *s; | |
2477 | int ret = 0; | |
d1c6de6f | 2478 | |
25dbc73a AM |
2479 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2480 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2481 | ++ret; | |
d1c6de6f | 2482 | |
25dbc73a AM |
2483 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2484 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2485 | ++ret; | |
deaaf2f3 | 2486 | |
25dbc73a AM |
2487 | return ret; |
2488 | } | |
deaaf2f3 | 2489 | |
68ffbac6 | 2490 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
2491 | |
2492 | bfd_boolean | |
2493 | ppc_elf_modify_segment_map (bfd *abfd, | |
2494 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2495 | { | |
f7d69005 | 2496 | struct elf_segment_map *m; |
b9c361e0 JL |
2497 | |
2498 | /* At this point in the link, output sections have already been sorted by | |
2499 | LMA and assigned to segments. All that is left to do is to ensure | |
2500 | there is no mixing of VLE & non-VLE sections in a text segment. | |
2501 | If we find that case, we split the segment. | |
2502 | We maintain the original output section order. */ | |
2503 | ||
12bd6957 | 2504 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 | 2505 | { |
f7d69005 AM |
2506 | struct elf_segment_map *n; |
2507 | bfd_size_type amt; | |
2508 | unsigned int j, k; | |
2509 | unsigned int p_flags; | |
2510 | ||
2511 | if (m->p_type != PT_LOAD || m->count == 0) | |
b9c361e0 JL |
2512 | continue; |
2513 | ||
f7d69005 | 2514 | for (p_flags = PF_R, j = 0; j != m->count; ++j) |
b9c361e0 | 2515 | { |
f7d69005 AM |
2516 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2517 | p_flags |= PF_W; | |
2518 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2519 | { | |
2520 | p_flags |= PF_X; | |
2521 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2522 | p_flags |= PF_PPC_VLE; | |
2523 | break; | |
2524 | } | |
2525 | } | |
2526 | if (j != m->count) | |
2527 | while (++j != m->count) | |
2528 | { | |
2529 | unsigned int p_flags1 = PF_R; | |
94caa966 | 2530 | |
f7d69005 AM |
2531 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
2532 | p_flags1 |= PF_W; | |
2533 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
2534 | { | |
2535 | p_flags1 |= PF_X; | |
2536 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
2537 | p_flags1 |= PF_PPC_VLE; | |
2538 | if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0) | |
2539 | break; | |
2540 | } | |
2541 | p_flags |= p_flags1; | |
2542 | } | |
2543 | /* If we're splitting a segment which originally contained rw | |
2544 | sections then those sections might now only be in one of the | |
2545 | two parts. So always set p_flags if splitting, even if we | |
2546 | are being called for objcopy with p_flags_valid set. */ | |
2547 | if (j != m->count || !m->p_flags_valid) | |
2548 | { | |
2549 | m->p_flags_valid = 1; | |
2550 | m->p_flags = p_flags; | |
2551 | } | |
2552 | if (j == m->count) | |
b9c361e0 JL |
2553 | continue; |
2554 | ||
f7d69005 | 2555 | /* Sections 0..j-1 stay in this (current) segment, |
b9c361e0 JL |
2556 | the remainder are put in a new segment. |
2557 | The scan resumes with the new segment. */ | |
2558 | ||
b9c361e0 JL |
2559 | amt = sizeof (struct elf_segment_map); |
2560 | amt += (m->count - j - 1) * sizeof (asection *); | |
2561 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
2562 | if (n == NULL) | |
954b63d4 | 2563 | return FALSE; |
b9c361e0 JL |
2564 | |
2565 | n->p_type = PT_LOAD; | |
b9c361e0 JL |
2566 | n->count = m->count - j; |
2567 | for (k = 0; k < n->count; ++k) | |
f7d69005 AM |
2568 | n->sections[k] = m->sections[j + k]; |
2569 | m->count = j; | |
2570 | m->p_size_valid = 0; | |
b9c361e0 JL |
2571 | n->next = m->next; |
2572 | m->next = n; | |
b9c361e0 JL |
2573 | } |
2574 | ||
2575 | return TRUE; | |
2576 | } | |
2577 | ||
25dbc73a AM |
2578 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2579 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2580 | that the linker doesn't crater when trying to make more than | |
2581 | 2 sections. */ | |
e656e369 | 2582 | |
b35d266b | 2583 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2584 | { |
14b57c7c AM |
2585 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2586 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2587 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2588 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2589 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2590 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2591 | { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 }, | |
2592 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2593 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2594 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2595 | }; |
2596 | ||
551b43fd AM |
2597 | /* This is what we want for new plt/got. */ |
2598 | static struct bfd_elf_special_section ppc_alt_plt = | |
07d6d2b8 | 2599 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2600 | |
2601 | static const struct bfd_elf_special_section * | |
4aef7643 | 2602 | ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
7f4d3958 | 2603 | { |
b35d266b | 2604 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2605 | |
2606 | /* See if this is one of the special sections. */ | |
2607 | if (sec->name == NULL) | |
2608 | return NULL; | |
2609 | ||
2610 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2611 | sec->use_rela_p); | |
2612 | if (ssect != NULL) | |
2613 | { | |
2614 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2615 | ssect = &ppc_alt_plt; | |
2616 | return ssect; | |
2617 | } | |
2618 | ||
2619 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2620 | } | |
25dbc73a AM |
2621 | \f |
2622 | /* Very simple linked list structure for recording apuinfo values. */ | |
2623 | typedef struct apuinfo_list | |
2624 | { | |
2625 | struct apuinfo_list *next; | |
2626 | unsigned long value; | |
2627 | } | |
2628 | apuinfo_list; | |
e656e369 | 2629 | |
25dbc73a | 2630 | static apuinfo_list *head; |
f2faa800 | 2631 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 2632 | |
25dbc73a AM |
2633 | static void |
2634 | apuinfo_list_init (void) | |
2635 | { | |
2636 | head = NULL; | |
f2faa800 | 2637 | apuinfo_set = FALSE; |
25dbc73a | 2638 | } |
9abc968f | 2639 | |
25dbc73a AM |
2640 | static void |
2641 | apuinfo_list_add (unsigned long value) | |
2642 | { | |
2643 | apuinfo_list *entry = head; | |
deaaf2f3 | 2644 | |
25dbc73a AM |
2645 | while (entry != NULL) |
2646 | { | |
2647 | if (entry->value == value) | |
2648 | return; | |
2649 | entry = entry->next; | |
2650 | } | |
b4a38de6 | 2651 | |
25dbc73a AM |
2652 | entry = bfd_malloc (sizeof (* entry)); |
2653 | if (entry == NULL) | |
2654 | return; | |
e656e369 | 2655 | |
25dbc73a AM |
2656 | entry->value = value; |
2657 | entry->next = head; | |
2658 | head = entry; | |
2659 | } | |
9abc968f | 2660 | |
25dbc73a AM |
2661 | static unsigned |
2662 | apuinfo_list_length (void) | |
2663 | { | |
2664 | apuinfo_list *entry; | |
2665 | unsigned long count; | |
9abc968f | 2666 | |
25dbc73a AM |
2667 | for (entry = head, count = 0; |
2668 | entry; | |
2669 | entry = entry->next) | |
2670 | ++ count; | |
e656e369 | 2671 | |
25dbc73a AM |
2672 | return count; |
2673 | } | |
eea6121a | 2674 | |
25dbc73a AM |
2675 | static inline unsigned long |
2676 | apuinfo_list_element (unsigned long number) | |
2677 | { | |
2678 | apuinfo_list * entry; | |
e656e369 | 2679 | |
25dbc73a AM |
2680 | for (entry = head; |
2681 | entry && number --; | |
2682 | entry = entry->next) | |
2683 | ; | |
252b5132 | 2684 | |
25dbc73a AM |
2685 | return entry ? entry->value : 0; |
2686 | } | |
2687 | ||
2688 | static void | |
2689 | apuinfo_list_finish (void) | |
2690 | { | |
2691 | apuinfo_list *entry; | |
2692 | ||
2693 | for (entry = head; entry;) | |
252b5132 | 2694 | { |
25dbc73a AM |
2695 | apuinfo_list *next = entry->next; |
2696 | free (entry); | |
2697 | entry = next; | |
2698 | } | |
9abc968f | 2699 | |
25dbc73a AM |
2700 | head = NULL; |
2701 | } | |
9abc968f | 2702 | |
25dbc73a AM |
2703 | /* Scan the input BFDs and create a linked list of |
2704 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2705 | |
25dbc73a AM |
2706 | static void |
2707 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2708 | { | |
2709 | bfd *ibfd; | |
2710 | asection *asec; | |
deddc40b NS |
2711 | char *buffer = NULL; |
2712 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 2713 | unsigned i; |
25dbc73a AM |
2714 | unsigned long length; |
2715 | const char *error_message = NULL; | |
9abc968f | 2716 | |
25dbc73a AM |
2717 | if (link_info == NULL) |
2718 | return; | |
9abc968f | 2719 | |
25dbc73a | 2720 | apuinfo_list_init (); |
252b5132 | 2721 | |
25dbc73a | 2722 | /* Read in the input sections contents. */ |
c72f2fb2 | 2723 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 2724 | { |
25dbc73a | 2725 | unsigned long datum; |
252b5132 | 2726 | |
25dbc73a AM |
2727 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2728 | if (asec == NULL) | |
2729 | continue; | |
252b5132 | 2730 | |
695344c0 | 2731 | /* xgettext:c-format */ |
deddc40b | 2732 | error_message = _("corrupt %s section in %B"); |
25dbc73a | 2733 | length = asec->size; |
deddc40b NS |
2734 | if (length < 20) |
2735 | goto fail; | |
2736 | ||
f2faa800 | 2737 | apuinfo_set = TRUE; |
deddc40b | 2738 | if (largest_input_size < asec->size) |
25dbc73a | 2739 | { |
deddc40b NS |
2740 | if (buffer) |
2741 | free (buffer); | |
2742 | largest_input_size = asec->size; | |
2743 | buffer = bfd_malloc (largest_input_size); | |
2744 | if (!buffer) | |
2745 | return; | |
25dbc73a | 2746 | } |
5b914448 | 2747 | |
25dbc73a | 2748 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 2749 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a | 2750 | { |
695344c0 | 2751 | /* xgettext:c-format */ |
25dbc73a AM |
2752 | error_message = _("unable to read in %s section from %B"); |
2753 | goto fail; | |
2754 | } | |
252b5132 | 2755 | |
25dbc73a AM |
2756 | /* Verify the contents of the header. Note - we have to |
2757 | extract the values this way in order to allow for a | |
2758 | host whose endian-ness is different from the target. */ | |
deddc40b | 2759 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
2760 | if (datum != sizeof APUINFO_LABEL) |
2761 | goto fail; | |
252b5132 | 2762 | |
deddc40b | 2763 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
2764 | if (datum != 0x2) |
2765 | goto fail; | |
252b5132 | 2766 | |
deddc40b | 2767 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 2768 | goto fail; |
252b5132 | 2769 | |
25dbc73a | 2770 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 2771 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
2772 | if (datum + 20 != length) |
2773 | goto fail; | |
2774 | ||
25dbc73a AM |
2775 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
2776 | for (i = 0; i < datum; i += 4) | |
deddc40b | 2777 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
2778 | } |
2779 | ||
25dbc73a | 2780 | error_message = NULL; |
252b5132 | 2781 | |
f2faa800 | 2782 | if (apuinfo_set) |
deddc40b | 2783 | { |
f2faa800 NS |
2784 | /* Compute the size of the output section. */ |
2785 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 2786 | |
deddc40b NS |
2787 | /* Set the output section size, if it exists. */ |
2788 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 2789 | |
deddc40b NS |
2790 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
2791 | { | |
2792 | ibfd = abfd; | |
695344c0 | 2793 | /* xgettext:c-format */ |
deddc40b NS |
2794 | error_message = _("warning: unable to set size of %s section in %B"); |
2795 | } | |
2796 | } | |
25dbc73a AM |
2797 | |
2798 | fail: | |
deddc40b NS |
2799 | if (buffer) |
2800 | free (buffer); | |
25dbc73a AM |
2801 | |
2802 | if (error_message) | |
cd9af601 | 2803 | _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd); |
25dbc73a | 2804 | } |
252b5132 | 2805 | |
25dbc73a AM |
2806 | /* Prevent the output section from accumulating the input sections' |
2807 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2808 | |
25dbc73a AM |
2809 | static bfd_boolean |
2810 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2811 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2812 | asection *asec, |
2813 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2814 | { | |
f2faa800 | 2815 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
2816 | } |
2817 | ||
25dbc73a AM |
2818 | /* Finally we can generate the output section. */ |
2819 | ||
2820 | static void | |
2821 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2822 | { |
25dbc73a AM |
2823 | bfd_byte *buffer; |
2824 | asection *asec; | |
2825 | unsigned i; | |
2826 | unsigned num_entries; | |
2827 | bfd_size_type length; | |
7619e7c7 | 2828 | |
25dbc73a AM |
2829 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2830 | if (asec == NULL) | |
2831 | return; | |
2832 | ||
f2faa800 | 2833 | if (!apuinfo_set) |
25dbc73a AM |
2834 | return; |
2835 | ||
2836 | length = asec->size; | |
2837 | if (length < 20) | |
2838 | return; | |
2839 | ||
2840 | buffer = bfd_malloc (length); | |
2841 | if (buffer == NULL) | |
7619e7c7 | 2842 | { |
4eca0228 | 2843 | _bfd_error_handler |
25dbc73a AM |
2844 | (_("failed to allocate space for new APUinfo section.")); |
2845 | return; | |
7619e7c7 | 2846 | } |
7619e7c7 | 2847 | |
25dbc73a AM |
2848 | /* Create the apuinfo header. */ |
2849 | num_entries = apuinfo_list_length (); | |
2850 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2851 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2852 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2853 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2854 | |
25dbc73a AM |
2855 | length = 20; |
2856 | for (i = 0; i < num_entries; i++) | |
feee612b | 2857 | { |
25dbc73a AM |
2858 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2859 | length += 4; | |
feee612b | 2860 | } |
feee612b | 2861 | |
25dbc73a | 2862 | if (length != asec->size) |
4eca0228 | 2863 | _bfd_error_handler (_("failed to compute new APUinfo section.")); |
252b5132 | 2864 | |
25dbc73a | 2865 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
4eca0228 | 2866 | _bfd_error_handler (_("failed to install new APUinfo section.")); |
252b5132 | 2867 | |
25dbc73a AM |
2868 | free (buffer); |
2869 | ||
2870 | apuinfo_list_finish (); | |
252b5132 | 2871 | } |
25dbc73a | 2872 | \f |
7382d32a | 2873 | static bfd_boolean |
c6dd29ce | 2874 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2875 | { |
c6dd29ce | 2876 | bfd_byte buf[GLINK_ENTRY_SIZE]; |
7382d32a | 2877 | |
c6dd29ce | 2878 | if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE)) |
7382d32a AM |
2879 | return FALSE; |
2880 | ||
c6dd29ce AM |
2881 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2882 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
2883 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 | |
2884 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
2885 | } |
2886 | ||
468392fb AM |
2887 | static bfd_boolean |
2888 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2889 | { | |
2890 | bfd_vma vma = *(bfd_vma *) ptr; | |
2891 | return ((section->flags & SEC_ALLOC) != 0 | |
2892 | && section->vma <= vma | |
2893 | && vma < section->vma + section->size); | |
2894 | } | |
2895 | ||
2896 | static long | |
2897 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2898 | long dynsymcount, asymbol **dynsyms, | |
2899 | asymbol **ret) | |
2900 | { | |
2901 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2902 | asection *plt, *relplt, *dynamic, *glink; | |
2903 | bfd_vma glink_vma = 0; | |
2904 | bfd_vma resolv_vma = 0; | |
2905 | bfd_vma stub_vma; | |
2906 | asymbol *s; | |
2907 | arelent *p; | |
2908 | long count, i; | |
2909 | size_t size; | |
2910 | char *names; | |
2911 | bfd_byte buf[4]; | |
2912 | ||
2913 | *ret = NULL; | |
2914 | ||
2915 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2916 | return 0; | |
2917 | ||
2918 | if (dynsymcount <= 0) | |
2919 | return 0; | |
2920 | ||
2921 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2922 | if (relplt == NULL) | |
2923 | return 0; | |
2924 | ||
2925 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2926 | if (plt == NULL) | |
2927 | return 0; | |
2928 | ||
2929 | /* Call common code to handle old-style executable PLTs. */ | |
2930 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2931 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2932 | dynsymcount, dynsyms, ret); | |
2933 | ||
2934 | /* If this object was prelinked, the prelinker stored the address | |
2935 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2936 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2937 | if (dynamic != NULL) | |
2938 | { | |
2939 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2940 | size_t extdynsize; | |
2941 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2942 | ||
2943 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2944 | return -1; | |
2945 | ||
2946 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2947 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2948 | ||
2949 | extdyn = dynbuf; | |
2950 | extdynend = extdyn + dynamic->size; | |
2951 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2952 | { | |
2953 | Elf_Internal_Dyn dyn; | |
2954 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2955 | ||
2956 | if (dyn.d_tag == DT_NULL) | |
2957 | break; | |
2958 | ||
2959 | if (dyn.d_tag == DT_PPC_GOT) | |
2960 | { | |
2961 | unsigned int g_o_t = dyn.d_un.d_val; | |
2962 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
2963 | if (got != NULL | |
2964 | && bfd_get_section_contents (abfd, got, buf, | |
2965 | g_o_t - got->vma + 4, 4)) | |
2966 | glink_vma = bfd_get_32 (abfd, buf); | |
2967 | break; | |
2968 | } | |
2969 | } | |
2970 | free (dynbuf); | |
2971 | } | |
2972 | ||
2973 | /* Otherwise we read the first plt entry. */ | |
2974 | if (glink_vma == 0) | |
2975 | { | |
2976 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
2977 | glink_vma = bfd_get_32 (abfd, buf); | |
2978 | } | |
2979 | ||
2980 | if (glink_vma == 0) | |
2981 | return 0; | |
2982 | ||
2983 | /* The .glink section usually does not survive the final | |
2984 | link; search for the section (usually .text) where the | |
2985 | glink stubs now reside. */ | |
2986 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
2987 | if (glink == NULL) | |
2988 | return 0; | |
2989 | ||
2990 | /* Determine glink PLT resolver by reading the relative branch | |
2991 | from the first glink stub. */ | |
2992 | if (bfd_get_section_contents (abfd, glink, buf, | |
2993 | glink_vma - glink->vma, 4)) | |
2994 | { | |
2995 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2996 | ||
2997 | /* The first glink stub may either branch to the resolver ... */ | |
2998 | insn ^= B; | |
2999 | if ((insn & ~0x3fffffc) == 0) | |
3000 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
3001 | ||
3002 | /* ... or fall through a bunch of NOPs. */ | |
3003 | else if ((insn ^ B ^ NOP) == 0) | |
3004 | for (i = 4; | |
3005 | bfd_get_section_contents (abfd, glink, buf, | |
3006 | glink_vma - glink->vma + i, 4); | |
3007 | i += 4) | |
3008 | if (bfd_get_32 (abfd, buf) != NOP) | |
3009 | { | |
3010 | resolv_vma = glink_vma + i; | |
3011 | break; | |
3012 | } | |
3013 | } | |
3014 | ||
7382d32a | 3015 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
3016 | /* If the stubs are those for -shared/-pie then we might have |
3017 | multiple stubs for each plt entry. If that is the case then | |
3018 | there is no way to associate stubs with their plt entries short | |
3019 | of figuring out the GOT pointer value used in the stub. */ | |
c6dd29ce AM |
3020 | if (!is_nonpic_glink_stub (abfd, glink, |
3021 | glink_vma - GLINK_ENTRY_SIZE - glink->vma)) | |
7382d32a AM |
3022 | return 0; |
3023 | ||
468392fb AM |
3024 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
3025 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
3026 | return -1; | |
3027 | ||
468392fb AM |
3028 | size = count * sizeof (asymbol); |
3029 | p = relplt->relocation; | |
3030 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
3031 | { |
3032 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3033 | if (p->addend != 0) | |
3034 | size += sizeof ("+0x") - 1 + 8; | |
3035 | } | |
468392fb AM |
3036 | |
3037 | size += sizeof (asymbol) + sizeof ("__glink"); | |
3038 | ||
3039 | if (resolv_vma) | |
3040 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
3041 | ||
3042 | s = *ret = bfd_malloc (size); | |
3043 | if (s == NULL) | |
3044 | return -1; | |
3045 | ||
1079403c | 3046 | stub_vma = glink_vma; |
468392fb | 3047 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
3048 | p = relplt->relocation + count - 1; |
3049 | for (i = 0; i < count; i++) | |
468392fb AM |
3050 | { |
3051 | size_t len; | |
3052 | ||
3053 | *s = **p->sym_ptr_ptr; | |
3054 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3055 | we are defining a symbol, ensure one of them is set. */ | |
3056 | if ((s->flags & BSF_LOCAL) == 0) | |
3057 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3058 | s->flags |= BSF_SYNTHETIC; |
468392fb | 3059 | s->section = glink; |
1079403c AM |
3060 | stub_vma -= 16; |
3061 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
3062 | stub_vma -= 32; | |
468392fb AM |
3063 | s->value = stub_vma - glink->vma; |
3064 | s->name = names; | |
3065 | s->udata.p = NULL; | |
3066 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3067 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3068 | names += len; | |
e054468f AM |
3069 | if (p->addend != 0) |
3070 | { | |
3071 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3072 | names += sizeof ("+0x") - 1; | |
3073 | bfd_sprintf_vma (abfd, names, p->addend); | |
3074 | names += strlen (names); | |
3075 | } | |
468392fb AM |
3076 | memcpy (names, "@plt", sizeof ("@plt")); |
3077 | names += sizeof ("@plt"); | |
3078 | ++s; | |
1079403c | 3079 | --p; |
468392fb AM |
3080 | } |
3081 | ||
3082 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 3083 | memset (s, 0, sizeof *s); |
468392fb | 3084 | s->the_bfd = abfd; |
6ba2a415 | 3085 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3086 | s->section = glink; |
3087 | s->value = glink_vma - glink->vma; | |
3088 | s->name = names; | |
3089 | memcpy (names, "__glink", sizeof ("__glink")); | |
3090 | names += sizeof ("__glink"); | |
3091 | s++; | |
3092 | count++; | |
3093 | ||
3094 | if (resolv_vma) | |
3095 | { | |
3096 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 3097 | memset (s, 0, sizeof *s); |
468392fb | 3098 | s->the_bfd = abfd; |
6ba2a415 | 3099 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3100 | s->section = glink; |
3101 | s->value = resolv_vma - glink->vma; | |
3102 | s->name = names; | |
3103 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3104 | names += sizeof ("__glink_PLTresolve"); | |
3105 | s++; | |
3106 | count++; | |
3107 | } | |
3108 | ||
3109 | return count; | |
3110 | } | |
3111 | \f | |
25dbc73a AM |
3112 | /* The following functions are specific to the ELF linker, while |
3113 | functions above are used generally. They appear in this file more | |
3114 | or less in the order in which they are called. eg. | |
3115 | ppc_elf_check_relocs is called early in the link process, | |
3116 | ppc_elf_finish_dynamic_sections is one of the last functions | |
3117 | called. */ | |
252b5132 | 3118 | |
a6aa5195 | 3119 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 3120 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
3121 | struct plt_entry |
3122 | { | |
3123 | struct plt_entry *next; | |
3124 | ||
3125 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
3126 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
3127 | GOT pointer reg. It will always be at least 32768. (Current |
3128 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
3129 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
3130 | bfd_vma addend; |
3131 | ||
3132 | /* The .got2 section. */ | |
3133 | asection *sec; | |
3134 | ||
3135 | /* PLT refcount or offset. */ | |
3136 | union | |
3137 | { | |
3138 | bfd_signed_vma refcount; | |
3139 | bfd_vma offset; | |
3140 | } plt; | |
3141 | ||
3142 | /* .glink stub offset. */ | |
3143 | bfd_vma glink_offset; | |
3144 | }; | |
3145 | ||
7c8bbca5 AM |
3146 | /* Of those relocs that might be copied as dynamic relocs, this |
3147 | function selects those that must be copied when linking a shared | |
3148 | library or PIE, even when the symbol is local. */ | |
252b5132 | 3149 | |
1d483afe AM |
3150 | static int |
3151 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3152 | enum elf_ppc_reloc_type r_type) | |
3153 | { | |
3154 | switch (r_type) | |
3155 | { | |
3156 | default: | |
7c8bbca5 AM |
3157 | /* Only relative relocs can be resolved when the object load |
3158 | address isn't fixed. DTPREL32 is excluded because the | |
3159 | dynamic linker needs to differentiate global dynamic from | |
3160 | local dynamic __tls_index pairs when PPC_OPT_TLS is set. */ | |
1d483afe AM |
3161 | return 1; |
3162 | ||
3163 | case R_PPC_REL24: | |
3164 | case R_PPC_REL14: | |
3165 | case R_PPC_REL14_BRTAKEN: | |
3166 | case R_PPC_REL14_BRNTAKEN: | |
3167 | case R_PPC_REL32: | |
3168 | return 0; | |
3169 | ||
3170 | case R_PPC_TPREL32: | |
3171 | case R_PPC_TPREL16: | |
3172 | case R_PPC_TPREL16_LO: | |
3173 | case R_PPC_TPREL16_HI: | |
3174 | case R_PPC_TPREL16_HA: | |
7c8bbca5 AM |
3175 | /* These relocations are relative but in a shared library the |
3176 | linker doesn't know the thread pointer base. */ | |
3177 | return bfd_link_dll (info); | |
1d483afe AM |
3178 | } |
3179 | } | |
252b5132 | 3180 | |
25dbc73a AM |
3181 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3182 | copying dynamic variables from a shared lib into an app's dynbss | |
3183 | section, and instead use a dynamic relocation to point into the | |
3184 | shared lib. */ | |
3185 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 3186 | |
f95f8542 AM |
3187 | /* Used to track dynamic relocations for local symbols. */ |
3188 | struct ppc_dyn_relocs | |
3189 | { | |
3190 | struct ppc_dyn_relocs *next; | |
3191 | ||
3192 | /* The input section of the reloc. */ | |
3193 | asection *sec; | |
3194 | ||
3195 | /* Total number of relocs copied for the input section. */ | |
3196 | unsigned int count : 31; | |
3197 | ||
3198 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3199 | unsigned int ifunc : 1; | |
3200 | }; | |
3201 | ||
25dbc73a | 3202 | /* PPC ELF linker hash entry. */ |
252b5132 | 3203 | |
25dbc73a AM |
3204 | struct ppc_elf_link_hash_entry |
3205 | { | |
3206 | struct elf_link_hash_entry elf; | |
252b5132 | 3207 | |
25dbc73a AM |
3208 | /* If this symbol is used in the linker created sections, the processor |
3209 | specific backend uses this field to map the field into the offset | |
3210 | from the beginning of the section. */ | |
3211 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 3212 | |
25dbc73a | 3213 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3214 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 3215 | |
25dbc73a AM |
3216 | /* Contexts in which symbol is used in the GOT (or TOC). |
3217 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
3218 | corresponding relocs are encountered during check_relocs. | |
3219 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3220 | indicate the corresponding GOT entry type is not needed. */ | |
3221 | #define TLS_GD 1 /* GD reloc. */ | |
3222 | #define TLS_LD 2 /* LD reloc. */ | |
3223 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3224 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3225 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3226 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3227 | #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */ |
25dbc73a | 3228 | char tls_mask; |
4dc4a9a5 DJ |
3229 | |
3230 | /* Nonzero if we have seen a small data relocation referring to this | |
3231 | symbol. */ | |
d3e454b9 AM |
3232 | unsigned char has_sda_refs : 1; |
3233 | ||
3234 | /* Flag use of given relocations. */ | |
3235 | unsigned char has_addr16_ha : 1; | |
3236 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 3237 | }; |
252b5132 | 3238 | |
25dbc73a AM |
3239 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
3240 | ||
3241 | /* PPC ELF linker hash table. */ | |
3242 | ||
3243 | struct ppc_elf_link_hash_table | |
3244 | { | |
3245 | struct elf_link_hash_table elf; | |
3246 | ||
5446cbdf AM |
3247 | /* Various options passed from the linker. */ |
3248 | struct ppc_elf_params *params; | |
3249 | ||
25dbc73a | 3250 | /* Short-cuts to get to dynamic linker sections. */ |
d7128ce4 | 3251 | asection *glink; |
25dbc73a AM |
3252 | asection *dynsbss; |
3253 | asection *relsbss; | |
c9a2f333 | 3254 | elf_linker_section_t sdata[2]; |
25dbc73a | 3255 | asection *sbss; |
6177242a | 3256 | asection *glink_eh_frame; |
25dbc73a | 3257 | |
016687f8 AM |
3258 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
3259 | asection *srelplt2; | |
3260 | ||
1d483afe | 3261 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 3262 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 3263 | |
016687f8 AM |
3264 | /* The bfd that forced an old-style PLT. */ |
3265 | bfd *old_bfd; | |
5b914448 | 3266 | |
25dbc73a AM |
3267 | /* TLS local dynamic got entry handling. */ |
3268 | union { | |
3269 | bfd_signed_vma refcount; | |
3270 | bfd_vma offset; | |
3271 | } tlsld_got; | |
252b5132 | 3272 | |
c6dd29ce | 3273 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
3274 | bfd_vma glink_pltresolve; |
3275 | ||
3b36f7e6 AM |
3276 | /* Size of reserved GOT entries. */ |
3277 | unsigned int got_header_size; | |
3278 | /* Non-zero if allocating the header left a gap. */ | |
3279 | unsigned int got_gap; | |
3280 | ||
4a3dc543 RS |
3281 | /* The type of PLT we have chosen to use. */ |
3282 | enum ppc_elf_plt_type plt_type; | |
3283 | ||
9d8504b1 | 3284 | /* True if the target system is VxWorks. */ |
016687f8 | 3285 | unsigned int is_vxworks:1; |
9d8504b1 | 3286 | |
82e66161 AM |
3287 | /* Whether there exist local gnu indirect function resolvers, |
3288 | referenced by dynamic relocations. */ | |
3289 | unsigned int local_ifunc_resolver:1; | |
3290 | unsigned int maybe_local_ifunc_resolver:1; | |
3291 | ||
9a23f96e AM |
3292 | /* Set if tls optimization is enabled. */ |
3293 | unsigned int do_tls_opt:1; | |
3294 | ||
9d8504b1 PB |
3295 | /* The size of PLT entries. */ |
3296 | int plt_entry_size; | |
3297 | /* The distance between adjacent PLT slots. */ | |
3298 | int plt_slot_size; | |
3299 | /* The size of the first PLT entry. */ | |
3300 | int plt_initial_entry_size; | |
016687f8 | 3301 | |
87d72d41 AM |
3302 | /* Small local sym cache. */ |
3303 | struct sym_cache sym_cache; | |
25dbc73a | 3304 | }; |
252b5132 | 3305 | |
94caa966 AM |
3306 | /* Rename some of the generic section flags to better document how they |
3307 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
3308 | ||
3309 | /* Nonzero if this section has TLS related relocations. */ | |
3310 | #define has_tls_reloc sec_flg0 | |
3311 | ||
3312 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3313 | #define has_tls_get_addr_call sec_flg1 | |
3314 | ||
25dbc73a | 3315 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 3316 | |
25dbc73a | 3317 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
3318 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3319 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 3320 | |
25dbc73a | 3321 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 3322 | |
25dbc73a AM |
3323 | static struct bfd_hash_entry * |
3324 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3325 | struct bfd_hash_table *table, | |
3326 | const char *string) | |
252b5132 | 3327 | { |
25dbc73a AM |
3328 | /* Allocate the structure if it has not already been allocated by a |
3329 | subclass. */ | |
3330 | if (entry == NULL) | |
3331 | { | |
3332 | entry = bfd_hash_allocate (table, | |
3333 | sizeof (struct ppc_elf_link_hash_entry)); | |
3334 | if (entry == NULL) | |
3335 | return entry; | |
3336 | } | |
252b5132 | 3337 | |
25dbc73a AM |
3338 | /* Call the allocation method of the superclass. */ |
3339 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3340 | if (entry != NULL) | |
3341 | { | |
3342 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
3343 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
3344 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 3345 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 3346 | } |
252b5132 | 3347 | |
25dbc73a | 3348 | return entry; |
252b5132 | 3349 | } |
3dab13f6 | 3350 | |
25dbc73a | 3351 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 3352 | |
25dbc73a AM |
3353 | static struct bfd_link_hash_table * |
3354 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 3355 | { |
25dbc73a | 3356 | struct ppc_elf_link_hash_table *ret; |
76e7a751 | 3357 | static struct ppc_elf_params default_params |
08dc996f | 3358 | = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 }; |
3dab13f6 | 3359 | |
25dbc73a AM |
3360 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
3361 | if (ret == NULL) | |
3362 | return NULL; | |
3dab13f6 | 3363 | |
66eb6687 AM |
3364 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
3365 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
3366 | sizeof (struct ppc_elf_link_hash_entry), |
3367 | PPC32_ELF_DATA)) | |
3dab13f6 | 3368 | { |
25dbc73a AM |
3369 | free (ret); |
3370 | return NULL; | |
3371 | } | |
58111eb7 | 3372 | |
a6aa5195 AM |
3373 | ret->elf.init_plt_refcount.refcount = 0; |
3374 | ret->elf.init_plt_refcount.glist = NULL; | |
3375 | ret->elf.init_plt_offset.offset = 0; | |
3376 | ret->elf.init_plt_offset.glist = NULL; | |
3377 | ||
db434ba0 AM |
3378 | ret->params = &default_params; |
3379 | ||
c9a2f333 AM |
3380 | ret->sdata[0].name = ".sdata"; |
3381 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
3382 | ret->sdata[0].bss_name = ".sbss"; | |
3383 | ||
3384 | ret->sdata[1].name = ".sdata2"; | |
3385 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
3386 | ret->sdata[1].bss_name = ".sbss2"; | |
3387 | ||
9d8504b1 PB |
3388 | ret->plt_entry_size = 12; |
3389 | ret->plt_slot_size = 8; | |
3390 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 3391 | |
25dbc73a AM |
3392 | return &ret->elf.root; |
3393 | } | |
3dab13f6 | 3394 | |
5446cbdf AM |
3395 | /* Hook linker params into hash table. */ |
3396 | ||
3397 | void | |
3398 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
3399 | { | |
3400 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3401 | ||
3402 | if (htab) | |
3403 | htab->params = params; | |
76e7a751 | 3404 | params->pagesize_p2 = bfd_log2 (params->pagesize); |
5446cbdf AM |
3405 | } |
3406 | ||
9d8504b1 | 3407 | /* Create .got and the related sections. */ |
3dab13f6 | 3408 | |
25dbc73a AM |
3409 | static bfd_boolean |
3410 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
3411 | { | |
3412 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3413 | |
25dbc73a AM |
3414 | if (!_bfd_elf_create_got_section (abfd, info)) |
3415 | return FALSE; | |
3dab13f6 | 3416 | |
25dbc73a | 3417 | htab = ppc_elf_hash_table (info); |
ce558b89 | 3418 | if (!htab->is_vxworks) |
9d8504b1 PB |
3419 | { |
3420 | /* The powerpc .got has a blrl instruction in it. Mark it | |
3421 | executable. */ | |
ce558b89 AM |
3422 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS |
3423 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3424 | if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags)) | |
9d8504b1 PB |
3425 | return FALSE; |
3426 | } | |
3dab13f6 | 3427 | |
25dbc73a AM |
3428 | return TRUE; |
3429 | } | |
3dab13f6 | 3430 | |
93d1b056 AM |
3431 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
3432 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
3433 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
3434 | ||
3435 | static bfd_boolean | |
3436 | ppc_elf_create_linker_section (bfd *abfd, | |
3437 | struct bfd_link_info *info, | |
3438 | flagword flags, | |
3439 | elf_linker_section_t *lsect) | |
3440 | { | |
3441 | asection *s; | |
3442 | ||
3443 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3444 | | SEC_LINKER_CREATED); | |
3445 | ||
3446 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
3447 | if (s == NULL) | |
3448 | return FALSE; | |
3449 | lsect->section = s; | |
3450 | ||
3451 | /* Define the sym on the first section of this name. */ | |
3452 | s = bfd_get_section_by_name (abfd, lsect->name); | |
3453 | ||
3454 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
3455 | if (lsect->sym == NULL) | |
3456 | return FALSE; | |
3457 | lsect->sym->root.u.def.value = 0x8000; | |
3458 | return TRUE; | |
3459 | } | |
3460 | ||
e054468f AM |
3461 | static bfd_boolean |
3462 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
3463 | { | |
3464 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3465 | asection *s; | |
3466 | flagword flags; | |
3467 | ||
3468 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
3469 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3470 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
3471 | htab->glink = s; | |
3472 | if (s == NULL | |
5446cbdf AM |
3473 | || !bfd_set_section_alignment (abfd, s, |
3474 | htab->params->ppc476_workaround ? 6 : 4)) | |
e054468f AM |
3475 | return FALSE; |
3476 | ||
6177242a AM |
3477 | if (!info->no_ld_generated_unwind_info) |
3478 | { | |
3479 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3480 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3481 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
3482 | htab->glink_eh_frame = s; | |
3483 | if (s == NULL | |
3484 | || !bfd_set_section_alignment (abfd, s, 2)) | |
3485 | return FALSE; | |
3486 | } | |
3487 | ||
e054468f AM |
3488 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
3489 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
ce558b89 | 3490 | htab->elf.iplt = s; |
e054468f AM |
3491 | if (s == NULL |
3492 | || !bfd_set_section_alignment (abfd, s, 4)) | |
3493 | return FALSE; | |
3494 | ||
3495 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3496 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3497 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
ce558b89 | 3498 | htab->elf.irelplt = s; |
e054468f AM |
3499 | if (s == NULL |
3500 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3501 | return FALSE; | |
93d1b056 AM |
3502 | |
3503 | if (!ppc_elf_create_linker_section (abfd, info, 0, | |
3504 | &htab->sdata[0])) | |
3505 | return FALSE; | |
3506 | ||
3507 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3508 | &htab->sdata[1])) | |
3509 | return FALSE; | |
3510 | ||
e054468f AM |
3511 | return TRUE; |
3512 | } | |
3513 | ||
25dbc73a AM |
3514 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
3515 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
3516 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 3517 | |
25dbc73a AM |
3518 | static bfd_boolean |
3519 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3520 | { | |
3521 | struct ppc_elf_link_hash_table *htab; | |
3522 | asection *s; | |
3523 | flagword flags; | |
3dab13f6 | 3524 | |
25dbc73a | 3525 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 3526 | |
ce558b89 | 3527 | if (htab->elf.sgot == NULL |
25dbc73a | 3528 | && !ppc_elf_create_got (abfd, info)) |
3dab13f6 AM |
3529 | return FALSE; |
3530 | ||
25dbc73a AM |
3531 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
3532 | return FALSE; | |
3dab13f6 | 3533 | |
e054468f AM |
3534 | if (htab->glink == NULL |
3535 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 3536 | return FALSE; |
3dab13f6 | 3537 | |
14b2f831 AM |
3538 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
3539 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 3540 | htab->dynsbss = s; |
3496cb2a | 3541 | if (s == NULL) |
25dbc73a | 3542 | return FALSE; |
3dab13f6 | 3543 | |
0e1862bb | 3544 | if (! bfd_link_pic (info)) |
25dbc73a | 3545 | { |
e054468f AM |
3546 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
3547 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3548 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 3549 | htab->relsbss = s; |
25dbc73a | 3550 | if (s == NULL |
25dbc73a AM |
3551 | || ! bfd_set_section_alignment (abfd, s, 2)) |
3552 | return FALSE; | |
3553 | } | |
3dab13f6 | 3554 | |
711de32c RS |
3555 | if (htab->is_vxworks |
3556 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
3557 | return FALSE; | |
9d8504b1 | 3558 | |
ce558b89 | 3559 | s = htab->elf.splt; |
3b36f7e6 | 3560 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
3561 | if (htab->plt_type == PLT_VXWORKS) |
3562 | /* The VxWorks PLT is a loaded section with contents. */ | |
3563 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
3564 | return bfd_set_section_flags (abfd, s, flags); |
3565 | } | |
3dab13f6 | 3566 | |
25dbc73a | 3567 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 3568 | |
25dbc73a | 3569 | static void |
fcfa13d2 | 3570 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
3571 | struct elf_link_hash_entry *dir, |
3572 | struct elf_link_hash_entry *ind) | |
3573 | { | |
3574 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 3575 | |
25dbc73a AM |
3576 | edir = (struct ppc_elf_link_hash_entry *) dir; |
3577 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 3578 | |
c79d6685 AM |
3579 | edir->tls_mask |= eind->tls_mask; |
3580 | edir->has_sda_refs |= eind->has_sda_refs; | |
3581 | ||
e81830c5 AM |
3582 | if (edir->elf.versioned != versioned_hidden) |
3583 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
c79d6685 AM |
3584 | edir->elf.ref_regular |= eind->elf.ref_regular; |
3585 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3586 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
c79d6685 AM |
3587 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3588 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
3589 | ||
287c7eaf AM |
3590 | /* If we were called to copy over info for a weak sym, that's all. */ |
3591 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3592 | return; | |
3593 | ||
25dbc73a AM |
3594 | if (eind->dyn_relocs != NULL) |
3595 | { | |
3596 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3597 | { |
6061a67d AM |
3598 | struct elf_dyn_relocs **pp; |
3599 | struct elf_dyn_relocs *p; | |
3dab13f6 | 3600 | |
fcfa13d2 | 3601 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3602 | list. Merge any entries against the same section. */ |
3603 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3604 | { |
6061a67d | 3605 | struct elf_dyn_relocs *q; |
25dbc73a AM |
3606 | |
3607 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3608 | if (q->sec == p->sec) | |
3609 | { | |
3610 | q->pc_count += p->pc_count; | |
3611 | q->count += p->count; | |
3612 | *pp = p->next; | |
3613 | break; | |
3614 | } | |
3615 | if (q == NULL) | |
3616 | pp = &p->next; | |
3dab13f6 | 3617 | } |
25dbc73a | 3618 | *pp = edir->dyn_relocs; |
3dab13f6 | 3619 | } |
25dbc73a AM |
3620 | |
3621 | edir->dyn_relocs = eind->dyn_relocs; | |
3622 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3623 | } |
3dab13f6 | 3624 | |
a6aa5195 AM |
3625 | /* Copy over the GOT refcount entries that we may have already seen to |
3626 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3627 | edir->elf.got.refcount += eind->elf.got.refcount; |
3628 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3629 | |
3630 | /* And plt entries. */ | |
3631 | if (eind->elf.plt.plist != NULL) | |
3632 | { | |
3633 | if (edir->elf.plt.plist != NULL) | |
3634 | { | |
3635 | struct plt_entry **entp; | |
3636 | struct plt_entry *ent; | |
3637 | ||
3638 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3639 | { | |
3640 | struct plt_entry *dent; | |
3641 | ||
3642 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3643 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3644 | { | |
3645 | dent->plt.refcount += ent->plt.refcount; | |
3646 | *entp = ent->next; | |
3647 | break; | |
3648 | } | |
3649 | if (dent == NULL) | |
3650 | entp = &ent->next; | |
3651 | } | |
3652 | *entp = edir->elf.plt.plist; | |
3653 | } | |
3654 | ||
3655 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3656 | eind->elf.plt.plist = NULL; | |
3657 | } | |
3658 | ||
fcfa13d2 | 3659 | if (eind->elf.dynindx != -1) |
25dbc73a | 3660 | { |
fcfa13d2 AM |
3661 | if (edir->elf.dynindx != -1) |
3662 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3663 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3664 | edir->elf.dynindx = eind->elf.dynindx; |
3665 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3666 | eind->elf.dynindx = -1; | |
3667 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3668 | } |
25dbc73a | 3669 | } |
3dab13f6 | 3670 | |
25dbc73a AM |
3671 | /* Hook called by the linker routine which adds symbols from an object |
3672 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3673 | |
25dbc73a AM |
3674 | static bfd_boolean |
3675 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3676 | struct bfd_link_info *info, | |
3677 | Elf_Internal_Sym *sym, | |
3678 | const char **namep ATTRIBUTE_UNUSED, | |
3679 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3680 | asection **secp, | |
3681 | bfd_vma *valp) | |
3682 | { | |
3683 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 3684 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
3685 | && is_ppc_elf (info->output_bfd) |
3686 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3687 | { |
3688 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3689 | put into .sbss. */ | |
3690 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3691 | |
25dbc73a AM |
3692 | htab = ppc_elf_hash_table (info); |
3693 | if (htab->sbss == NULL) | |
3694 | { | |
644285ef | 3695 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3696 | |
644285ef AM |
3697 | if (!htab->elf.dynobj) |
3698 | htab->elf.dynobj = abfd; | |
3699 | ||
3496cb2a L |
3700 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3701 | ".sbss", | |
3702 | flags); | |
3703 | if (htab->sbss == NULL) | |
25dbc73a | 3704 | return FALSE; |
3dab13f6 | 3705 | } |
3dab13f6 | 3706 | |
25dbc73a AM |
3707 | *secp = htab->sbss; |
3708 | *valp = sym->st_size; | |
3709 | } | |
3dab13f6 | 3710 | |
a43942db | 3711 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
3712 | && (abfd->flags & DYNAMIC) == 0 |
3713 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 3714 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
e054468f | 3715 | |
25dbc73a | 3716 | return TRUE; |
3dab13f6 AM |
3717 | } |
3718 | \f | |
25dbc73a AM |
3719 | /* Find a linker generated pointer with a given addend and type. */ |
3720 | ||
3721 | static elf_linker_section_pointers_t * | |
3722 | elf_find_pointer_linker_section | |
3723 | (elf_linker_section_pointers_t *linker_pointers, | |
3724 | bfd_vma addend, | |
3725 | elf_linker_section_t *lsect) | |
252b5132 | 3726 | { |
25dbc73a AM |
3727 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3728 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3729 | return linker_pointers; | |
252b5132 | 3730 | |
25dbc73a AM |
3731 | return NULL; |
3732 | } | |
3733 | ||
3734 | /* Allocate a pointer to live in a linker created section. */ | |
3735 | ||
3736 | static bfd_boolean | |
93d1b056 AM |
3737 | elf_allocate_pointer_linker_section (bfd *abfd, |
3738 | elf_linker_section_t *lsect, | |
3739 | struct elf_link_hash_entry *h, | |
3740 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
3741 | { |
3742 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3743 | elf_linker_section_pointers_t *linker_section_ptr; | |
3744 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3745 | bfd_size_type amt; | |
3746 | ||
3747 | BFD_ASSERT (lsect != NULL); | |
3748 | ||
3749 | /* Is this a global symbol? */ | |
3750 | if (h != NULL) | |
3751 | { | |
3752 | struct ppc_elf_link_hash_entry *eh; | |
3753 | ||
3754 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3755 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3756 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3757 | rel->r_addend, | |
3758 | lsect)) | |
3759 | return TRUE; | |
3760 | ||
3761 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3762 | } |
3763 | else | |
3764 | { | |
0c8d6e5c | 3765 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3766 | |
25dbc73a AM |
3767 | /* Allocation of a pointer to a local symbol. */ |
3768 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3769 | ||
3770 | /* Allocate a table to hold the local symbols if first time. */ | |
3771 | if (!ptr) | |
3772 | { | |
0ffa91dd | 3773 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3774 | |
3775 | amt = num_symbols; | |
3776 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3777 | ptr = bfd_zalloc (abfd, amt); | |
3778 | ||
3779 | if (!ptr) | |
3780 | return FALSE; | |
3781 | ||
3782 | elf_local_ptr_offsets (abfd) = ptr; | |
3783 | } | |
3784 | ||
3785 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3786 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3787 | rel->r_addend, | |
3788 | lsect)) | |
3789 | return TRUE; | |
252b5132 | 3790 | |
25dbc73a | 3791 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3792 | } |
41fcb14e | 3793 | |
25dbc73a AM |
3794 | /* Allocate space for a pointer in the linker section, and allocate |
3795 | a new pointer record from internal memory. */ | |
3796 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3797 | amt = sizeof (elf_linker_section_pointers_t); | |
3798 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3799 | |
25dbc73a | 3800 | if (!linker_section_ptr) |
7619e7c7 | 3801 | return FALSE; |
41fcb14e | 3802 | |
25dbc73a AM |
3803 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3804 | linker_section_ptr->addend = rel->r_addend; | |
3805 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3806 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3807 | |
93d1b056 AM |
3808 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
3809 | return FALSE; | |
25dbc73a AM |
3810 | linker_section_ptr->offset = lsect->section->size; |
3811 | lsect->section->size += 4; | |
7619e7c7 | 3812 | |
25dbc73a AM |
3813 | #ifdef DEBUG |
3814 | fprintf (stderr, | |
3815 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3816 | lsect->name, (long) linker_section_ptr->offset, | |
3817 | (long) lsect->section->size); | |
3818 | #endif | |
7619e7c7 AM |
3819 | |
3820 | return TRUE; | |
41fcb14e AM |
3821 | } |
3822 | ||
e054468f | 3823 | static struct plt_entry ** |
25dbc73a AM |
3824 | update_local_sym_info (bfd *abfd, |
3825 | Elf_Internal_Shdr *symtab_hdr, | |
3826 | unsigned long r_symndx, | |
3827 | int tls_type) | |
252b5132 | 3828 | { |
25dbc73a | 3829 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3830 | struct plt_entry **local_plt; |
25dbc73a | 3831 | char *local_got_tls_masks; |
252b5132 | 3832 | |
25dbc73a | 3833 | if (local_got_refcounts == NULL) |
252b5132 | 3834 | { |
25dbc73a AM |
3835 | bfd_size_type size = symtab_hdr->sh_info; |
3836 | ||
e054468f AM |
3837 | size *= (sizeof (*local_got_refcounts) |
3838 | + sizeof (*local_plt) | |
3839 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3840 | local_got_refcounts = bfd_zalloc (abfd, size); |
3841 | if (local_got_refcounts == NULL) | |
e054468f | 3842 | return NULL; |
25dbc73a | 3843 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3844 | } |
41fcb14e | 3845 | |
e054468f AM |
3846 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
3847 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
25dbc73a | 3848 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
3849 | if (tls_type != PLT_IFUNC) |
3850 | local_got_refcounts[r_symndx] += 1; | |
3851 | return local_plt + r_symndx; | |
25dbc73a | 3852 | } |
41fcb14e | 3853 | |
a6aa5195 | 3854 | static bfd_boolean |
3ec01793 | 3855 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3856 | asection *sec, bfd_vma addend) |
3857 | { | |
3858 | struct plt_entry *ent; | |
3859 | ||
32af9f6e AM |
3860 | if (addend < 32768) |
3861 | sec = NULL; | |
3ec01793 | 3862 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3863 | if (ent->sec == sec && ent->addend == addend) |
3864 | break; | |
3865 | if (ent == NULL) | |
3866 | { | |
3867 | bfd_size_type amt = sizeof (*ent); | |
3868 | ent = bfd_alloc (abfd, amt); | |
3869 | if (ent == NULL) | |
3870 | return FALSE; | |
3ec01793 | 3871 | ent->next = *plist; |
a6aa5195 AM |
3872 | ent->sec = sec; |
3873 | ent->addend = addend; | |
3874 | ent->plt.refcount = 0; | |
3ec01793 | 3875 | *plist = ent; |
a6aa5195 AM |
3876 | } |
3877 | ent->plt.refcount += 1; | |
3878 | return TRUE; | |
3879 | } | |
3880 | ||
3881 | static struct plt_entry * | |
3ec01793 | 3882 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3883 | { |
3884 | struct plt_entry *ent; | |
3885 | ||
3886 | if (addend < 32768) | |
3887 | sec = NULL; | |
3ec01793 | 3888 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3889 | if (ent->sec == sec && ent->addend == addend) |
3890 | break; | |
3891 | return ent; | |
3892 | } | |
3893 | ||
e054468f AM |
3894 | static bfd_boolean |
3895 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3896 | { | |
3897 | return (r_type == R_PPC_PLTREL24 | |
3898 | || r_type == R_PPC_LOCAL24PC | |
3899 | || r_type == R_PPC_REL24 | |
3900 | || r_type == R_PPC_REL14 | |
3901 | || r_type == R_PPC_REL14_BRTAKEN | |
3902 | || r_type == R_PPC_REL14_BRNTAKEN | |
3903 | || r_type == R_PPC_ADDR24 | |
3904 | || r_type == R_PPC_ADDR14 | |
3905 | || r_type == R_PPC_ADDR14_BRTAKEN | |
dfdaec14 AJ |
3906 | || r_type == R_PPC_ADDR14_BRNTAKEN |
3907 | || r_type == R_PPC_VLE_REL24); | |
e054468f AM |
3908 | } |
3909 | ||
25dbc73a AM |
3910 | static void |
3911 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3912 | { | |
4eca0228 | 3913 | _bfd_error_handler |
695344c0 | 3914 | /* xgettext:c-format */ |
25dbc73a AM |
3915 | (_("%B: relocation %s cannot be used when making a shared object"), |
3916 | abfd, | |
3917 | ppc_elf_howto_table[r_type]->name); | |
3918 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3919 | } |
3920 | ||
25dbc73a AM |
3921 | /* Look through the relocs for a section during the first phase, and |
3922 | allocate space in the global offset table or procedure linkage | |
3923 | table. */ | |
252b5132 | 3924 | |
b34976b6 | 3925 | static bfd_boolean |
25dbc73a AM |
3926 | ppc_elf_check_relocs (bfd *abfd, |
3927 | struct bfd_link_info *info, | |
3928 | asection *sec, | |
3929 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3930 | { |
7619e7c7 | 3931 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3932 | Elf_Internal_Shdr *symtab_hdr; |
3933 | struct elf_link_hash_entry **sym_hashes; | |
3934 | const Elf_Internal_Rela *rel; | |
3935 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3936 | asection *got2, *sreloc; |
727fc41e | 3937 | struct elf_link_hash_entry *tga; |
25dbc73a | 3938 | |
0e1862bb | 3939 | if (bfd_link_relocatable (info)) |
25dbc73a | 3940 | return TRUE; |
252b5132 | 3941 | |
c87b5a93 AM |
3942 | /* Don't do anything special with non-loaded, non-alloced sections. |
3943 | In particular, any relocs in such sections should not affect GOT | |
3944 | and PLT reference counting (ie. we don't allow them to create GOT | |
3945 | or PLT entries), there's no possibility or desire to optimize TLS | |
3946 | relocs, and there's not much point in propagating relocs to shared | |
3947 | libs that the dynamic linker won't relocate. */ | |
3948 | if ((sec->flags & SEC_ALLOC) == 0) | |
3949 | return TRUE; | |
3950 | ||
252b5132 | 3951 | #ifdef DEBUG |
25dbc73a AM |
3952 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3953 | sec, abfd); | |
252b5132 RH |
3954 | #endif |
3955 | ||
0c8d6e5c | 3956 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3957 | |
25dbc73a AM |
3958 | /* Initialize howto table if not already done. */ |
3959 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3960 | ppc_elf_howto_init (); | |
3961 | ||
7619e7c7 | 3962 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
3963 | if (htab->glink == NULL) |
3964 | { | |
3965 | if (htab->elf.dynobj == NULL) | |
3966 | htab->elf.dynobj = abfd; | |
3967 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
3968 | return FALSE; | |
3969 | } | |
727fc41e AM |
3970 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3971 | FALSE, FALSE, TRUE); | |
0ffa91dd | 3972 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 3973 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 3974 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3975 | sreloc = NULL; |
3976 | ||
3977 | rel_end = relocs + sec->reloc_count; | |
3978 | for (rel = relocs; rel < rel_end; rel++) | |
3979 | { | |
3980 | unsigned long r_symndx; | |
3981 | enum elf_ppc_reloc_type r_type; | |
3982 | struct elf_link_hash_entry *h; | |
727fc41e | 3983 | int tls_type; |
cbf95972 | 3984 | struct plt_entry **ifunc; |
25dbc73a AM |
3985 | |
3986 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3987 | if (r_symndx < symtab_hdr->sh_info) | |
3988 | h = NULL; | |
3989 | else | |
973a3492 L |
3990 | { |
3991 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3992 | while (h->root.type == bfd_link_hash_indirect | |
3993 | || h->root.type == bfd_link_hash_warning) | |
3994 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3995 | } | |
25dbc73a AM |
3996 | |
3997 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3998 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3999 | startup code. */ | |
3b36f7e6 | 4000 | if (h != NULL |
ce558b89 | 4001 | && htab->elf.sgot == NULL |
3b36f7e6 | 4002 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 | 4003 | { |
3b36f7e6 AM |
4004 | if (htab->elf.dynobj == NULL) |
4005 | htab->elf.dynobj = abfd; | |
4006 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4007 | return FALSE; | |
4008 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 4009 | } |
252b5132 | 4010 | |
727fc41e | 4011 | tls_type = 0; |
de972ffa | 4012 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 4013 | ifunc = NULL; |
06a162cf | 4014 | if (h == NULL && !htab->is_vxworks) |
e054468f | 4015 | { |
06a162cf AM |
4016 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4017 | abfd, r_symndx); | |
4018 | if (isym == NULL) | |
4019 | return FALSE; | |
4020 | ||
0bed072f | 4021 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 4022 | { |
0bed072f | 4023 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf AM |
4024 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
4025 | PLT_IFUNC); | |
4026 | if (ifunc == NULL) | |
e054468f AM |
4027 | return FALSE; |
4028 | ||
06a162cf AM |
4029 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
4030 | In a non-pie executable even when there are | |
4031 | no plt calls. */ | |
0e1862bb | 4032 | if (!bfd_link_pic (info) |
0bed072f | 4033 | || is_branch_reloc (r_type)) |
e054468f | 4034 | { |
0bed072f AM |
4035 | bfd_vma addend = 0; |
4036 | if (r_type == R_PPC_PLTREL24) | |
4037 | { | |
4038 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4039 | if (bfd_link_pic (info)) |
0bed072f AM |
4040 | addend = rel->r_addend; |
4041 | } | |
4042 | if (!update_plt_info (abfd, ifunc, got2, addend)) | |
4043 | return FALSE; | |
e054468f AM |
4044 | } |
4045 | } | |
25f23106 AM |
4046 | } |
4047 | ||
de972ffa AM |
4048 | if (!htab->is_vxworks |
4049 | && is_branch_reloc (r_type) | |
4050 | && h != NULL | |
4051 | && h == tga) | |
25f23106 | 4052 | { |
de972ffa AM |
4053 | if (rel != relocs |
4054 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
4055 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
4056 | /* We have a new-style __tls_get_addr call with a marker | |
4057 | reloc. */ | |
4058 | ; | |
4059 | else | |
4060 | /* Mark this section as having an old-style call. */ | |
4061 | sec->has_tls_get_addr_call = 1; | |
e054468f | 4062 | } |
727fc41e | 4063 | |
25dbc73a AM |
4064 | switch (r_type) |
4065 | { | |
727fc41e AM |
4066 | case R_PPC_TLSGD: |
4067 | case R_PPC_TLSLD: | |
4068 | /* These special tls relocs tie a call to __tls_get_addr with | |
4069 | its parameter symbol. */ | |
4070 | break; | |
4071 | ||
25dbc73a AM |
4072 | case R_PPC_GOT_TLSLD16: |
4073 | case R_PPC_GOT_TLSLD16_LO: | |
4074 | case R_PPC_GOT_TLSLD16_HI: | |
4075 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4076 | tls_type = TLS_TLS | TLS_LD; |
4077 | goto dogottls; | |
252b5132 | 4078 | |
25dbc73a AM |
4079 | case R_PPC_GOT_TLSGD16: |
4080 | case R_PPC_GOT_TLSGD16_LO: | |
4081 | case R_PPC_GOT_TLSGD16_HI: | |
4082 | case R_PPC_GOT_TLSGD16_HA: | |
4083 | tls_type = TLS_TLS | TLS_GD; | |
4084 | goto dogottls; | |
4085 | ||
4086 | case R_PPC_GOT_TPREL16: | |
4087 | case R_PPC_GOT_TPREL16_LO: | |
4088 | case R_PPC_GOT_TPREL16_HI: | |
4089 | case R_PPC_GOT_TPREL16_HA: | |
7c8bbca5 | 4090 | if (bfd_link_dll (info)) |
25dbc73a AM |
4091 | info->flags |= DF_STATIC_TLS; |
4092 | tls_type = TLS_TLS | TLS_TPREL; | |
4093 | goto dogottls; | |
4094 | ||
4095 | case R_PPC_GOT_DTPREL16: | |
4096 | case R_PPC_GOT_DTPREL16_LO: | |
4097 | case R_PPC_GOT_DTPREL16_HI: | |
4098 | case R_PPC_GOT_DTPREL16_HA: | |
4099 | tls_type = TLS_TLS | TLS_DTPREL; | |
4100 | dogottls: | |
4101 | sec->has_tls_reloc = 1; | |
1a0670f3 | 4102 | /* Fall through. */ |
252b5132 | 4103 | |
25dbc73a AM |
4104 | /* GOT16 relocations */ |
4105 | case R_PPC_GOT16: | |
4106 | case R_PPC_GOT16_LO: | |
4107 | case R_PPC_GOT16_HI: | |
4108 | case R_PPC_GOT16_HA: | |
4109 | /* This symbol requires a global offset table entry. */ | |
ce558b89 | 4110 | if (htab->elf.sgot == NULL) |
25dbc73a AM |
4111 | { |
4112 | if (htab->elf.dynobj == NULL) | |
4113 | htab->elf.dynobj = abfd; | |
4114 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4115 | return FALSE; | |
4116 | } | |
4117 | if (h != NULL) | |
4118 | { | |
4119 | h->got.refcount += 1; | |
4120 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
4121 | } | |
4122 | else | |
4123 | /* This is a global offset table entry for a local symbol. */ | |
4124 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
4125 | return FALSE; | |
91e21fb7 AM |
4126 | |
4127 | /* We may also need a plt entry if the symbol turns out to be | |
4128 | an ifunc. */ | |
0e1862bb | 4129 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
4130 | { |
4131 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4132 | return FALSE; | |
4133 | } | |
25dbc73a | 4134 | break; |
252b5132 | 4135 | |
25dbc73a AM |
4136 | /* Indirect .sdata relocation. */ |
4137 | case R_PPC_EMB_SDAI16: | |
0e1862bb | 4138 | if (bfd_link_pic (info)) |
25dbc73a AM |
4139 | { |
4140 | bad_shared_reloc (abfd, r_type); | |
4141 | return FALSE; | |
4142 | } | |
93d1b056 AM |
4143 | htab->sdata[0].sym->ref_regular = 1; |
4144 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
4145 | h, rel)) | |
25dbc73a | 4146 | return FALSE; |
046183de AM |
4147 | if (h != NULL) |
4148 | { | |
4149 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4150 | h->non_got_ref = TRUE; | |
4151 | } | |
25dbc73a | 4152 | break; |
252b5132 | 4153 | |
25dbc73a AM |
4154 | /* Indirect .sdata2 relocation. */ |
4155 | case R_PPC_EMB_SDA2I16: | |
0e1862bb | 4156 | if (bfd_link_pic (info)) |
25dbc73a AM |
4157 | { |
4158 | bad_shared_reloc (abfd, r_type); | |
4159 | return FALSE; | |
4160 | } | |
93d1b056 AM |
4161 | htab->sdata[1].sym->ref_regular = 1; |
4162 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
4163 | h, rel)) | |
25dbc73a | 4164 | return FALSE; |
046183de AM |
4165 | if (h != NULL) |
4166 | { | |
4167 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4168 | h->non_got_ref = TRUE; | |
4169 | } | |
25dbc73a | 4170 | break; |
252b5132 | 4171 | |
93d1b056 AM |
4172 | case R_PPC_SDAREL16: |
4173 | htab->sdata[0].sym->ref_regular = 1; | |
1a0670f3 | 4174 | /* Fall through. */ |
93d1b056 | 4175 | |
b9c361e0 JL |
4176 | case R_PPC_VLE_SDAREL_LO16A: |
4177 | case R_PPC_VLE_SDAREL_LO16D: | |
4178 | case R_PPC_VLE_SDAREL_HI16A: | |
4179 | case R_PPC_VLE_SDAREL_HI16D: | |
4180 | case R_PPC_VLE_SDAREL_HA16A: | |
4181 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
4182 | if (h != NULL) |
4183 | { | |
4184 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4185 | h->non_got_ref = TRUE; | |
4186 | } | |
4187 | break; | |
4188 | ||
b9c361e0 JL |
4189 | case R_PPC_VLE_REL8: |
4190 | case R_PPC_VLE_REL15: | |
4191 | case R_PPC_VLE_REL24: | |
4192 | case R_PPC_VLE_LO16A: | |
4193 | case R_PPC_VLE_LO16D: | |
4194 | case R_PPC_VLE_HI16A: | |
4195 | case R_PPC_VLE_HI16D: | |
4196 | case R_PPC_VLE_HA16A: | |
4197 | case R_PPC_VLE_HA16D: | |
83eef883 | 4198 | case R_PPC_VLE_ADDR20: |
b9c361e0 JL |
4199 | break; |
4200 | ||
25dbc73a | 4201 | case R_PPC_EMB_SDA2REL: |
0e1862bb | 4202 | if (bfd_link_pic (info)) |
046183de AM |
4203 | { |
4204 | bad_shared_reloc (abfd, r_type); | |
4205 | return FALSE; | |
4206 | } | |
93d1b056 | 4207 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
4208 | if (h != NULL) |
4209 | { | |
4210 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4211 | h->non_got_ref = TRUE; | |
4212 | } | |
4213 | break; | |
4214 | ||
b9c361e0 JL |
4215 | case R_PPC_VLE_SDA21_LO: |
4216 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
4217 | case R_PPC_EMB_SDA21: |
4218 | case R_PPC_EMB_RELSDA: | |
0e1862bb | 4219 | if (bfd_link_pic (info)) |
046183de AM |
4220 | { |
4221 | bad_shared_reloc (abfd, r_type); | |
4222 | return FALSE; | |
4223 | } | |
046183de AM |
4224 | if (h != NULL) |
4225 | { | |
4226 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4227 | h->non_got_ref = TRUE; | |
4228 | } | |
4229 | break; | |
4230 | ||
25dbc73a AM |
4231 | case R_PPC_EMB_NADDR32: |
4232 | case R_PPC_EMB_NADDR16: | |
4233 | case R_PPC_EMB_NADDR16_LO: | |
4234 | case R_PPC_EMB_NADDR16_HI: | |
4235 | case R_PPC_EMB_NADDR16_HA: | |
0e1862bb | 4236 | if (bfd_link_pic (info)) |
25dbc73a AM |
4237 | { |
4238 | bad_shared_reloc (abfd, r_type); | |
4239 | return FALSE; | |
4240 | } | |
4dc4a9a5 | 4241 | if (h != NULL) |
046183de | 4242 | h->non_got_ref = TRUE; |
25dbc73a | 4243 | break; |
252b5132 | 4244 | |
25dbc73a | 4245 | case R_PPC_PLTREL24: |
de972ffa | 4246 | if (h == NULL) |
6d78d0b9 AM |
4247 | break; |
4248 | /* Fall through */ | |
4249 | case R_PPC_PLT32: | |
25dbc73a AM |
4250 | case R_PPC_PLTREL32: |
4251 | case R_PPC_PLT16_LO: | |
4252 | case R_PPC_PLT16_HI: | |
4253 | case R_PPC_PLT16_HA: | |
4254 | #ifdef DEBUG | |
4255 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
4256 | #endif | |
cbf95972 | 4257 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
4258 | if (h == NULL) |
4259 | { | |
cbf95972 AM |
4260 | if (ifunc == NULL) |
4261 | { | |
4262 | /* It does not make sense to have a procedure linkage | |
4263 | table entry for a non-ifunc local symbol. */ | |
4264 | info->callbacks->einfo | |
695344c0 | 4265 | /* xgettext:c-format */ |
174d0a74 | 4266 | (_("%H: %s reloc against local symbol\n"), |
cbf95972 AM |
4267 | abfd, sec, rel->r_offset, |
4268 | ppc_elf_howto_table[r_type]->name); | |
4269 | bfd_set_error (bfd_error_bad_value); | |
4270 | return FALSE; | |
4271 | } | |
25dbc73a | 4272 | } |
a6aa5195 AM |
4273 | else |
4274 | { | |
016687f8 | 4275 | bfd_vma addend = 0; |
ee05f2fe | 4276 | |
016687f8 AM |
4277 | if (r_type == R_PPC_PLTREL24) |
4278 | { | |
4279 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
0e1862bb | 4280 | if (bfd_link_pic (info)) |
a877a2b6 | 4281 | addend = rel->r_addend; |
016687f8 | 4282 | } |
a6aa5195 | 4283 | h->needs_plt = 1; |
32af9f6e | 4284 | if (!update_plt_info (abfd, &h->plt.plist, got2, addend)) |
a6aa5195 AM |
4285 | return FALSE; |
4286 | } | |
25dbc73a | 4287 | break; |
ee05f2fe | 4288 | |
25dbc73a AM |
4289 | /* The following relocations don't need to propagate the |
4290 | relocation if linking a shared object since they are | |
4291 | section relative. */ | |
4292 | case R_PPC_SECTOFF: | |
4293 | case R_PPC_SECTOFF_LO: | |
4294 | case R_PPC_SECTOFF_HI: | |
4295 | case R_PPC_SECTOFF_HA: | |
4296 | case R_PPC_DTPREL16: | |
4297 | case R_PPC_DTPREL16_LO: | |
4298 | case R_PPC_DTPREL16_HI: | |
4299 | case R_PPC_DTPREL16_HA: | |
4300 | case R_PPC_TOC16: | |
4301 | break; | |
252b5132 | 4302 | |
d7128ce4 AM |
4303 | case R_PPC_REL16: |
4304 | case R_PPC_REL16_LO: | |
4305 | case R_PPC_REL16_HI: | |
4306 | case R_PPC_REL16_HA: | |
a680de9a | 4307 | case R_PPC_REL16DX_HA: |
016687f8 | 4308 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
4309 | break; |
4310 | ||
a6aa5195 | 4311 | /* These are just markers. */ |
25dbc73a AM |
4312 | case R_PPC_TLS: |
4313 | case R_PPC_EMB_MRKREF: | |
4314 | case R_PPC_NONE: | |
4315 | case R_PPC_max: | |
32af9f6e AM |
4316 | case R_PPC_RELAX: |
4317 | case R_PPC_RELAX_PLT: | |
4318 | case R_PPC_RELAX_PLTREL24: | |
7ba71655 | 4319 | case R_PPC_16DX_HA: |
25dbc73a | 4320 | break; |
252b5132 | 4321 | |
25dbc73a AM |
4322 | /* These should only appear in dynamic objects. */ |
4323 | case R_PPC_COPY: | |
4324 | case R_PPC_GLOB_DAT: | |
4325 | case R_PPC_JMP_SLOT: | |
4326 | case R_PPC_RELATIVE: | |
e054468f | 4327 | case R_PPC_IRELATIVE: |
25dbc73a | 4328 | break; |
252b5132 | 4329 | |
25dbc73a AM |
4330 | /* These aren't handled yet. We'll report an error later. */ |
4331 | case R_PPC_ADDR30: | |
4332 | case R_PPC_EMB_RELSEC16: | |
4333 | case R_PPC_EMB_RELST_LO: | |
4334 | case R_PPC_EMB_RELST_HI: | |
4335 | case R_PPC_EMB_RELST_HA: | |
4336 | case R_PPC_EMB_BIT_FLD: | |
4337 | break; | |
252b5132 | 4338 | |
25dbc73a AM |
4339 | /* This refers only to functions defined in the shared library. */ |
4340 | case R_PPC_LOCAL24PC: | |
727fc41e | 4341 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
4342 | { |
4343 | htab->plt_type = PLT_OLD; | |
4344 | htab->old_bfd = abfd; | |
4345 | } | |
c7e17e05 AM |
4346 | if (h != NULL && h->type == STT_GNU_IFUNC) |
4347 | { | |
c7e17e05 AM |
4348 | h->needs_plt = 1; |
4349 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4350 | return FALSE; | |
4351 | } | |
25dbc73a | 4352 | break; |
252b5132 | 4353 | |
25dbc73a AM |
4354 | /* This relocation describes the C++ object vtable hierarchy. |
4355 | Reconstruct it for later use during GC. */ | |
4356 | case R_PPC_GNU_VTINHERIT: | |
4357 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4358 | return FALSE; | |
4359 | break; | |
252b5132 | 4360 | |
25dbc73a AM |
4361 | /* This relocation describes which C++ vtable entries are actually |
4362 | used. Record for later use during GC. */ | |
4363 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
4364 | BFD_ASSERT (h != NULL); |
4365 | if (h != NULL | |
4366 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
4367 | return FALSE; |
4368 | break; | |
252b5132 | 4369 | |
7c8bbca5 | 4370 | /* We shouldn't really be seeing TPREL32. */ |
25dbc73a | 4371 | case R_PPC_TPREL32: |
1d483afe AM |
4372 | case R_PPC_TPREL16: |
4373 | case R_PPC_TPREL16_LO: | |
4374 | case R_PPC_TPREL16_HI: | |
4375 | case R_PPC_TPREL16_HA: | |
7c8bbca5 | 4376 | if (bfd_link_dll (info)) |
25dbc73a AM |
4377 | info->flags |= DF_STATIC_TLS; |
4378 | goto dodyn; | |
252b5132 | 4379 | |
25dbc73a AM |
4380 | /* Nor these. */ |
4381 | case R_PPC_DTPMOD32: | |
4382 | case R_PPC_DTPREL32: | |
4383 | goto dodyn; | |
252b5132 | 4384 | |
9edfd1af AM |
4385 | case R_PPC_REL32: |
4386 | if (h == NULL | |
4387 | && got2 != NULL | |
4388 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 4389 | && bfd_link_pic (info) |
4a3dc543 | 4390 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
4391 | { |
4392 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
4393 | the start of a function, which assembles to a REL32 | |
4394 | reference to .got2. If we detect one of these, then | |
4395 | force the old PLT layout because the linker cannot | |
4396 | reliably deduce the GOT pointer value needed for | |
4397 | PLT call stubs. */ | |
4398 | asection *s; | |
87d72d41 | 4399 | Elf_Internal_Sym *isym; |
9edfd1af | 4400 | |
87d72d41 AM |
4401 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4402 | abfd, r_symndx); | |
4403 | if (isym == NULL) | |
4404 | return FALSE; | |
4405 | ||
4406 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 4407 | if (s == got2) |
016687f8 AM |
4408 | { |
4409 | htab->plt_type = PLT_OLD; | |
4410 | htab->old_bfd = abfd; | |
4411 | } | |
9edfd1af | 4412 | } |
7123df0e | 4413 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 4414 | break; |
625af618 AM |
4415 | /* fall through */ |
4416 | ||
4417 | case R_PPC_ADDR32: | |
4418 | case R_PPC_ADDR16: | |
4419 | case R_PPC_ADDR16_LO: | |
4420 | case R_PPC_ADDR16_HI: | |
4421 | case R_PPC_ADDR16_HA: | |
4422 | case R_PPC_UADDR32: | |
4423 | case R_PPC_UADDR16: | |
0e1862bb | 4424 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
4425 | { |
4426 | /* We may need a plt entry if the symbol turns out to be | |
4427 | a function defined in a dynamic object. */ | |
3ec01793 | 4428 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
4429 | return FALSE; |
4430 | ||
4431 | /* We may need a copy reloc too. */ | |
4432 | h->non_got_ref = 1; | |
4433 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
4434 | if (r_type == R_PPC_ADDR16_HA) |
4435 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
4436 | if (r_type == R_PPC_ADDR16_LO) | |
4437 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
4438 | } |
4439 | goto dodyn; | |
9edfd1af | 4440 | |
25dbc73a AM |
4441 | case R_PPC_REL24: |
4442 | case R_PPC_REL14: | |
4443 | case R_PPC_REL14_BRTAKEN: | |
4444 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 4445 | if (h == NULL) |
25dbc73a | 4446 | break; |
7123df0e | 4447 | if (h == htab->elf.hgot) |
d7128ce4 | 4448 | { |
7123df0e | 4449 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4450 | { |
4451 | htab->plt_type = PLT_OLD; | |
4452 | htab->old_bfd = abfd; | |
4453 | } | |
d7128ce4 AM |
4454 | break; |
4455 | } | |
25dbc73a | 4456 | /* fall through */ |
ee05f2fe | 4457 | |
25dbc73a | 4458 | case R_PPC_ADDR24: |
25dbc73a AM |
4459 | case R_PPC_ADDR14: |
4460 | case R_PPC_ADDR14_BRTAKEN: | |
4461 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 4462 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
4463 | { |
4464 | /* We may need a plt entry if the symbol turns out to be | |
4465 | a function defined in a dynamic object. */ | |
e054468f | 4466 | h->needs_plt = 1; |
de972ffa | 4467 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 4468 | return FALSE; |
625af618 | 4469 | break; |
25dbc73a | 4470 | } |
7619e7c7 | 4471 | |
25dbc73a AM |
4472 | dodyn: |
4473 | /* If we are creating a shared library, and this is a reloc | |
4474 | against a global symbol, or a non PC relative reloc | |
4475 | against a local symbol, then we need to copy the reloc | |
4476 | into the shared library. However, if we are linking with | |
4477 | -Bsymbolic, we do not need to copy a reloc against a | |
4478 | global symbol which is defined in an object we are | |
4479 | including in the link (i.e., DEF_REGULAR is set). At | |
4480 | this point we have not seen all the input files, so it is | |
4481 | possible that DEF_REGULAR is not set now but will be set | |
4482 | later (it is never cleared). In case of a weak definition, | |
4483 | DEF_REGULAR may be cleared later by a strong definition in | |
4484 | a shared library. We account for that possibility below by | |
4485 | storing information in the dyn_relocs field of the hash | |
4486 | table entry. A similar situation occurs when creating | |
4487 | shared libraries and symbol visibility changes render the | |
4488 | symbol local. | |
7619e7c7 | 4489 | |
25dbc73a AM |
4490 | If on the other hand, we are creating an executable, we |
4491 | may need to keep relocations for symbols satisfied by a | |
4492 | dynamic library if we manage to avoid copy relocs for the | |
4493 | symbol. */ | |
0e1862bb | 4494 | if ((bfd_link_pic (info) |
1d483afe | 4495 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 4496 | || (h != NULL |
198f1157 | 4497 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
4498 | || h->root.type == bfd_link_hash_defweak |
4499 | || !h->def_regular)))) | |
4500 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 4501 | && !bfd_link_pic (info) |
25dbc73a AM |
4502 | && h != NULL |
4503 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 4504 | || !h->def_regular))) |
25dbc73a | 4505 | { |
25dbc73a AM |
4506 | #ifdef DEBUG |
4507 | fprintf (stderr, | |
4508 | "ppc_elf_check_relocs needs to " | |
4509 | "create relocation for %s\n", | |
4510 | (h && h->root.root.string | |
4511 | ? h->root.root.string : "<unknown>")); | |
4512 | #endif | |
4513 | if (sreloc == NULL) | |
4514 | { | |
c9a2f333 AM |
4515 | if (htab->elf.dynobj == NULL) |
4516 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
4517 | |
4518 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
4519 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
4520 | ||
25dbc73a | 4521 | if (sreloc == NULL) |
83bac4b0 | 4522 | return FALSE; |
25dbc73a | 4523 | } |
7619e7c7 | 4524 | |
25dbc73a AM |
4525 | /* If this is a global symbol, we count the number of |
4526 | relocations we need for this symbol. */ | |
4527 | if (h != NULL) | |
4528 | { | |
f95f8542 AM |
4529 | struct elf_dyn_relocs *p; |
4530 | struct elf_dyn_relocs **rel_head; | |
4531 | ||
91d6fa6a | 4532 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
4533 | p = *rel_head; |
4534 | if (p == NULL || p->sec != sec) | |
4535 | { | |
4536 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4537 | if (p == NULL) | |
4538 | return FALSE; | |
4539 | p->next = *rel_head; | |
4540 | *rel_head = p; | |
4541 | p->sec = sec; | |
4542 | p->count = 0; | |
4543 | p->pc_count = 0; | |
4544 | } | |
4545 | p->count += 1; | |
4546 | if (!must_be_dyn_reloc (info, r_type)) | |
4547 | p->pc_count += 1; | |
25dbc73a AM |
4548 | } |
4549 | else | |
4550 | { | |
4551 | /* Track dynamic relocs needed for local syms too. | |
4552 | We really need local syms available to do this | |
4553 | easily. Oh well. */ | |
f95f8542 AM |
4554 | struct ppc_dyn_relocs *p; |
4555 | struct ppc_dyn_relocs **rel_head; | |
4556 | bfd_boolean is_ifunc; | |
25dbc73a | 4557 | asection *s; |
6edfbbad | 4558 | void *vpp; |
87d72d41 | 4559 | Elf_Internal_Sym *isym; |
6edfbbad | 4560 | |
87d72d41 AM |
4561 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4562 | abfd, r_symndx); | |
4563 | if (isym == NULL) | |
25dbc73a | 4564 | return FALSE; |
7fce784e | 4565 | |
87d72d41 AM |
4566 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4567 | if (s == NULL) | |
4568 | s = sec; | |
4569 | ||
6edfbbad | 4570 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
4571 | rel_head = (struct ppc_dyn_relocs **) vpp; |
4572 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4573 | p = *rel_head; | |
4574 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4575 | p = p->next; | |
4576 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4577 | { | |
4578 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4579 | if (p == NULL) | |
4580 | return FALSE; | |
4581 | p->next = *rel_head; | |
4582 | *rel_head = p; | |
4583 | p->sec = sec; | |
4584 | p->ifunc = is_ifunc; | |
4585 | p->count = 0; | |
4586 | } | |
4587 | p->count += 1; | |
25dbc73a | 4588 | } |
7619e7c7 | 4589 | } |
25dbc73a AM |
4590 | |
4591 | break; | |
7619e7c7 AM |
4592 | } |
4593 | } | |
ee05f2fe | 4594 | |
25dbc73a AM |
4595 | return TRUE; |
4596 | } | |
4597 | \f | |
005d79fd AM |
4598 | /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD |
4599 | and OBFD, and merge non-conflicting ones. */ | |
4600 | void | |
50e03d47 | 4601 | _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info) |
34c8bcba | 4602 | { |
50e03d47 | 4603 | bfd *obfd = info->output_bfd; |
c6e65352 DJ |
4604 | obj_attribute *in_attr, *in_attrs; |
4605 | obj_attribute *out_attr, *out_attrs; | |
34c8bcba | 4606 | |
c6e65352 DJ |
4607 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4608 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4609 | ||
c6e65352 DJ |
4610 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4611 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
005d79fd | 4612 | |
c6e65352 | 4613 | if (in_attr->i != out_attr->i) |
34c8bcba | 4614 | { |
005d79fd AM |
4615 | int in_fp = in_attr->i & 3; |
4616 | int out_fp = out_attr->i & 3; | |
4617 | ||
4618 | if (in_fp == 0) | |
34c8bcba | 4619 | ; |
005d79fd AM |
4620 | else if (out_fp == 0) |
4621 | { | |
4622 | out_attr->type = 1; | |
4623 | out_attr->i ^= in_fp; | |
4624 | } | |
4625 | else if (out_fp != 2 && in_fp == 2) | |
34c8bcba | 4626 | _bfd_error_handler |
695344c0 | 4627 | /* xgettext:c-format */ |
34c8bcba | 4628 | (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd); |
005d79fd AM |
4629 | else if (out_fp == 2 && in_fp != 2) |
4630 | _bfd_error_handler | |
695344c0 | 4631 | /* xgettext:c-format */ |
005d79fd AM |
4632 | (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd); |
4633 | else if (out_fp == 1 && in_fp == 3) | |
3c7b9897 | 4634 | _bfd_error_handler |
695344c0 | 4635 | /* xgettext:c-format */ |
005d79fd AM |
4636 | (_("Warning: %B uses double-precision hard float, " |
4637 | "%B uses single-precision hard float"), obfd, ibfd); | |
4638 | else if (out_fp == 3 && in_fp == 1) | |
3c7b9897 | 4639 | _bfd_error_handler |
695344c0 | 4640 | /* xgettext:c-format */ |
005d79fd AM |
4641 | (_("Warning: %B uses double-precision hard float, " |
4642 | "%B uses single-precision hard float"), ibfd, obfd); | |
4643 | ||
4644 | in_fp = in_attr->i & 0xc; | |
4645 | out_fp = out_attr->i & 0xc; | |
4646 | if (in_fp == 0) | |
4647 | ; | |
4648 | else if (out_fp == 0) | |
4649 | { | |
4650 | out_attr->type = 1; | |
4651 | out_attr->i ^= in_fp; | |
4652 | } | |
4653 | else if (out_fp != 2 * 4 && in_fp == 2 * 4) | |
3c7b9897 | 4654 | _bfd_error_handler |
695344c0 | 4655 | /* xgettext:c-format */ |
005d79fd AM |
4656 | (_("Warning: %B uses 64-bit long double, " |
4657 | "%B uses 128-bit long double"), ibfd, obfd); | |
4658 | else if (in_fp != 2 * 4 && out_fp == 2 * 4) | |
34c8bcba | 4659 | _bfd_error_handler |
695344c0 | 4660 | /* xgettext:c-format */ |
005d79fd AM |
4661 | (_("Warning: %B uses 64-bit long double, " |
4662 | "%B uses 128-bit long double"), obfd, ibfd); | |
4663 | else if (out_fp == 1 * 4 && in_fp == 3 * 4) | |
34c8bcba | 4664 | _bfd_error_handler |
695344c0 | 4665 | /* xgettext:c-format */ |
005d79fd AM |
4666 | (_("Warning: %B uses IBM long double, " |
4667 | "%B uses IEEE long double"), ibfd, obfd); | |
4668 | else if (out_fp == 3 * 4 && in_fp == 1 * 4) | |
34c8bcba | 4669 | _bfd_error_handler |
695344c0 | 4670 | /* xgettext:c-format */ |
005d79fd AM |
4671 | (_("Warning: %B uses IBM long double, " |
4672 | "%B uses IEEE long double"), obfd, ibfd); | |
c6e65352 | 4673 | } |
005d79fd AM |
4674 | } |
4675 | ||
4676 | /* Merge object attributes from IBFD into OBFD. Warn if | |
4677 | there are conflicting attributes. */ | |
4678 | static bfd_boolean | |
50e03d47 | 4679 | ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
005d79fd | 4680 | { |
50e03d47 | 4681 | bfd *obfd; |
005d79fd AM |
4682 | obj_attribute *in_attr, *in_attrs; |
4683 | obj_attribute *out_attr, *out_attrs; | |
4684 | ||
50e03d47 | 4685 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 4686 | |
50e03d47 | 4687 | obfd = info->output_bfd; |
005d79fd AM |
4688 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4689 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
c6e65352 DJ |
4690 | |
4691 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4692 | merge non-conflicting ones. */ | |
4693 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4694 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4695 | if (in_attr->i != out_attr->i) | |
4696 | { | |
005d79fd AM |
4697 | int in_vec = in_attr->i & 3; |
4698 | int out_vec = out_attr->i & 3; | |
c6e65352 | 4699 | |
005d79fd AM |
4700 | if (in_vec == 0) |
4701 | ; | |
4702 | else if (out_vec == 0) | |
c6e65352 | 4703 | { |
005d79fd AM |
4704 | out_attr->type = 1; |
4705 | out_attr->i = in_vec; | |
c6e65352 | 4706 | } |
c6e65352 DJ |
4707 | /* For now, allow generic to transition to AltiVec or SPE |
4708 | without a warning. If GCC marked files with their stack | |
4709 | alignment and used don't-care markings for files which are | |
4710 | not affected by the vector ABI, we could warn about this | |
4711 | case too. */ | |
005d79fd | 4712 | else if (in_vec == 1) |
c6e65352 | 4713 | ; |
005d79fd AM |
4714 | else if (out_vec == 1) |
4715 | { | |
4716 | out_attr->type = 1; | |
4717 | out_attr->i = in_vec; | |
4718 | } | |
4719 | else if (out_vec < in_vec) | |
c6e65352 | 4720 | _bfd_error_handler |
695344c0 | 4721 | /* xgettext:c-format */ |
005d79fd AM |
4722 | (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"), |
4723 | obfd, ibfd); | |
4724 | else if (out_vec > in_vec) | |
c6e65352 | 4725 | _bfd_error_handler |
695344c0 | 4726 | /* xgettext:c-format */ |
005d79fd AM |
4727 | (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"), |
4728 | ibfd, obfd); | |
34c8bcba JM |
4729 | } |
4730 | ||
f82e0623 NF |
4731 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4732 | and merge non-conflicting ones. */ | |
4733 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4734 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4735 | if (in_attr->i != out_attr->i) | |
4736 | { | |
005d79fd AM |
4737 | int in_struct = in_attr->i & 3; |
4738 | int out_struct = out_attr->i & 3; | |
4739 | ||
4740 | if (in_struct == 0 || in_struct == 3) | |
f82e0623 | 4741 | ; |
005d79fd AM |
4742 | else if (out_struct == 0) |
4743 | { | |
4744 | out_attr->type = 1; | |
4745 | out_attr->i = in_struct; | |
4746 | } | |
4747 | else if (out_struct < in_struct) | |
4748 | _bfd_error_handler | |
695344c0 | 4749 | /* xgettext:c-format */ |
005d79fd AM |
4750 | (_("Warning: %B uses r3/r4 for small structure returns, " |
4751 | "%B uses memory"), obfd, ibfd); | |
4752 | else if (out_struct > in_struct) | |
4753 | _bfd_error_handler | |
695344c0 | 4754 | /* xgettext:c-format */ |
005d79fd AM |
4755 | (_("Warning: %B uses r3/r4 for small structure returns, " |
4756 | "%B uses memory"), ibfd, obfd); | |
f82e0623 NF |
4757 | } |
4758 | ||
34c8bcba | 4759 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 4760 | _bfd_elf_merge_object_attributes (ibfd, info); |
34c8bcba JM |
4761 | |
4762 | return TRUE; | |
4763 | } | |
4764 | ||
8853c3d3 AM |
4765 | /* Merge backend specific data from an object file to the output |
4766 | object file when linking. */ | |
4767 | ||
4768 | static bfd_boolean | |
50e03d47 | 4769 | ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
8853c3d3 | 4770 | { |
50e03d47 | 4771 | bfd *obfd = info->output_bfd; |
8853c3d3 AM |
4772 | flagword old_flags; |
4773 | flagword new_flags; | |
4774 | bfd_boolean error; | |
4775 | ||
0c8d6e5c | 4776 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4777 | return TRUE; |
4778 | ||
cc643b88 | 4779 | /* Check if we have the same endianness. */ |
50e03d47 | 4780 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
8853c3d3 AM |
4781 | return FALSE; |
4782 | ||
50e03d47 | 4783 | if (!ppc_elf_merge_obj_attributes (ibfd, info)) |
34c8bcba JM |
4784 | return FALSE; |
4785 | ||
8853c3d3 AM |
4786 | new_flags = elf_elfheader (ibfd)->e_flags; |
4787 | old_flags = elf_elfheader (obfd)->e_flags; | |
4788 | if (!elf_flags_init (obfd)) | |
4789 | { | |
4790 | /* First call, no flags set. */ | |
4791 | elf_flags_init (obfd) = TRUE; | |
4792 | elf_elfheader (obfd)->e_flags = new_flags; | |
4793 | } | |
4794 | ||
4795 | /* Compatible flags are ok. */ | |
4796 | else if (new_flags == old_flags) | |
4797 | ; | |
4798 | ||
4799 | /* Incompatible flags. */ | |
4800 | else | |
4801 | { | |
4802 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4803 | to be linked with either. */ | |
4804 | error = FALSE; | |
4805 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4806 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4807 | { | |
4808 | error = TRUE; | |
4eca0228 | 4809 | _bfd_error_handler |
8853c3d3 AM |
4810 | (_("%B: compiled with -mrelocatable and linked with " |
4811 | "modules compiled normally"), ibfd); | |
4812 | } | |
4813 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4814 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4815 | { | |
4816 | error = TRUE; | |
4eca0228 | 4817 | _bfd_error_handler |
8853c3d3 AM |
4818 | (_("%B: compiled normally and linked with " |
4819 | "modules compiled with -mrelocatable"), ibfd); | |
4820 | } | |
4821 | ||
4822 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
4823 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
4824 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
4825 | ||
4826 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
4827 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
4828 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
4829 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
4830 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
4831 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
4832 | ||
4833 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
4834 | any module uses it. */ | |
4835 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
4836 | ||
4837 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4838 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4839 | ||
4840 | /* Warn about any other mismatches. */ | |
4841 | if (new_flags != old_flags) | |
4842 | { | |
4843 | error = TRUE; | |
4eca0228 | 4844 | _bfd_error_handler |
695344c0 | 4845 | /* xgettext:c-format */ |
cd9af601 AM |
4846 | (_("%B: uses different e_flags (%#x) fields " |
4847 | "than previous modules (%#x)"), | |
4848 | ibfd, new_flags, old_flags); | |
8853c3d3 AM |
4849 | } |
4850 | ||
4851 | if (error) | |
4852 | { | |
4853 | bfd_set_error (bfd_error_bad_value); | |
4854 | return FALSE; | |
4855 | } | |
4856 | } | |
4857 | ||
4858 | return TRUE; | |
4859 | } | |
b9c361e0 JL |
4860 | |
4861 | static void | |
95f0d0d2 | 4862 | ppc_elf_vle_split16 (bfd *input_bfd, |
08dc996f AM |
4863 | asection *input_section, |
4864 | unsigned long offset, | |
95f0d0d2 | 4865 | bfd_byte *loc, |
86c95733 | 4866 | bfd_vma value, |
08dc996f AM |
4867 | split16_format_type split16_format, |
4868 | bfd_boolean fixup) | |
b9c361e0 | 4869 | { |
08dc996f | 4870 | unsigned int insn, opcode, top5; |
b9c361e0 | 4871 | |
95f0d0d2 | 4872 | insn = bfd_get_32 (input_bfd, loc); |
673cff9b | 4873 | opcode = insn & 0xfc00f800; |
08dc996f AM |
4874 | if (opcode == E_OR2I_INSN |
4875 | || opcode == E_AND2I_DOT_INSN | |
4876 | || opcode == E_OR2IS_INSN | |
4877 | || opcode == E_LIS_INSN | |
4878 | || opcode == E_AND2IS_DOT_INSN) | |
4879 | { | |
4880 | if (split16_format != split16a_type) | |
4881 | { | |
4882 | if (fixup) | |
4883 | split16_format = split16a_type; | |
4884 | else | |
4885 | _bfd_error_handler | |
4886 | /* xgettext:c-format */ | |
4887 | (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"), | |
4888 | input_bfd, input_section, offset, opcode); | |
4889 | } | |
4890 | } | |
4891 | else if (opcode == E_ADD2I_DOT_INSN | |
4892 | || opcode == E_ADD2IS_INSN | |
4893 | || opcode == E_CMP16I_INSN | |
4894 | || opcode == E_MULL2I_INSN | |
4895 | || opcode == E_CMPL16I_INSN | |
4896 | || opcode == E_CMPH16I_INSN | |
4897 | || opcode == E_CMPHL16I_INSN) | |
4898 | { | |
4899 | if (split16_format != split16d_type) | |
4900 | { | |
4901 | if (fixup) | |
4902 | split16_format = split16d_type; | |
4903 | else | |
4904 | _bfd_error_handler | |
4905 | /* xgettext:c-format */ | |
4906 | (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"), | |
4907 | input_bfd, input_section, offset, opcode); | |
4908 | } | |
4909 | } | |
86c95733 | 4910 | top5 = value & 0xf800; |
5499c7c7 AM |
4911 | top5 = top5 << (split16_format == split16a_type ? 5 : 10); |
4912 | insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff); | |
b9c361e0 | 4913 | insn |= top5; |
86c95733 | 4914 | insn |= value & 0x7ff; |
95f0d0d2 | 4915 | bfd_put_32 (input_bfd, insn, loc); |
b9c361e0 | 4916 | } |
83eef883 AFB |
4917 | |
4918 | static void | |
4919 | ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value) | |
4920 | { | |
4921 | unsigned int insn; | |
4922 | ||
4923 | insn = bfd_get_32 (output_bfd, loc); | |
4924 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
4925 | /* Top 4 bits of value to 17..20. */ | |
4926 | insn |= (value & 0xf0000) >> 5; | |
4927 | /* Next 5 bits of the value to 11..15. */ | |
4928 | insn |= (value & 0xf800) << 5; | |
4929 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
4930 | insn |= value & 0x7ff; | |
4931 | bfd_put_32 (output_bfd, insn, loc); | |
4932 | } | |
4933 | ||
8853c3d3 | 4934 | \f |
d7128ce4 AM |
4935 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
4936 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
4937 | int | |
4938 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 4939 | struct bfd_link_info *info) |
d7128ce4 AM |
4940 | { |
4941 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 4942 | flagword flags; |
d7128ce4 AM |
4943 | |
4944 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
4945 | |
4946 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 4947 | { |
b3874e1a AM |
4948 | struct elf_link_hash_entry *h; |
4949 | ||
5446cbdf | 4950 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 4951 | htab->plt_type = PLT_OLD; |
0e1862bb | 4952 | else if (bfd_link_pic (info) |
b3874e1a AM |
4953 | && htab->elf.dynamic_sections_created |
4954 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
4955 | FALSE, FALSE, TRUE)) != NULL | |
4956 | && (h->type == STT_FUNC | |
4957 | || h->needs_plt) | |
4958 | && h->ref_regular | |
4959 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
21d68fcd | 4960 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
b3874e1a AM |
4961 | { |
4962 | /* Profiling of shared libs (and pies) is not supported with | |
4963 | secure plt, because ppc32 does profiling before a | |
4964 | function prologue and a secure plt pic call stubs needs | |
4965 | r30 to be set up. */ | |
4966 | htab->plt_type = PLT_OLD; | |
4967 | } | |
016687f8 AM |
4968 | else |
4969 | { | |
4970 | bfd *ibfd; | |
5446cbdf | 4971 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4972 | |
4973 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4974 | Use the old style bss plt if a file makes plt calls | |
4975 | without using the new relocs, and if ld isn't given | |
4976 | --secure-plt and we never see REL16 relocs. */ | |
4977 | if (plt_type == PLT_UNSET) | |
4978 | plt_type = PLT_OLD; | |
c72f2fb2 | 4979 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4980 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4981 | { |
4982 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4983 | plt_type = PLT_NEW; | |
4984 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4985 | { | |
4986 | plt_type = PLT_OLD; | |
4987 | htab->old_bfd = ibfd; | |
4988 | break; | |
4989 | } | |
4990 | } | |
4991 | htab->plt_type = plt_type; | |
4992 | } | |
4993 | } | |
5446cbdf | 4994 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
4995 | { |
4996 | if (htab->old_bfd != NULL) | |
4997 | info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"), | |
4998 | htab->old_bfd); | |
4999 | else | |
5000 | info->callbacks->einfo (_("%P: bss-plt forced by profiling\n")); | |
5001 | } | |
d7128ce4 | 5002 | |
4a3dc543 | 5003 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 5004 | |
4a3dc543 | 5005 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
5006 | { |
5007 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
5008 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
5009 | |
5010 | /* The new PLT is a loaded section. */ | |
ce558b89 AM |
5011 | if (htab->elf.splt != NULL |
5012 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags)) | |
86b9da88 AM |
5013 | return -1; |
5014 | ||
5015 | /* The new GOT is not executable. */ | |
ce558b89 AM |
5016 | if (htab->elf.sgot != NULL |
5017 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags)) | |
86b9da88 | 5018 | return -1; |
d7128ce4 AM |
5019 | } |
5020 | else | |
5021 | { | |
5022 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
5023 | if (htab->glink != NULL |
5024 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
5025 | return -1; | |
d7128ce4 | 5026 | } |
4a3dc543 | 5027 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
5028 | } |
5029 | \f | |
25dbc73a AM |
5030 | /* Return the section that should be marked against GC for a given |
5031 | relocation. */ | |
586119b3 | 5032 | |
25dbc73a AM |
5033 | static asection * |
5034 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 5035 | struct bfd_link_info *info, |
25dbc73a AM |
5036 | Elf_Internal_Rela *rel, |
5037 | struct elf_link_hash_entry *h, | |
5038 | Elf_Internal_Sym *sym) | |
5039 | { | |
5040 | if (h != NULL) | |
07adf181 AM |
5041 | switch (ELF32_R_TYPE (rel->r_info)) |
5042 | { | |
5043 | case R_PPC_GNU_VTINHERIT: | |
5044 | case R_PPC_GNU_VTENTRY: | |
5045 | return NULL; | |
5046 | } | |
5047 | ||
5048 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 5049 | } |
25dbc73a | 5050 | \f |
3a71aa26 AM |
5051 | /* Set plt output section type, htab->tls_get_addr, and call the |
5052 | generic ELF tls_setup function. */ | |
7fce784e | 5053 | |
25dbc73a | 5054 | asection * |
5446cbdf | 5055 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 5056 | { |
25dbc73a | 5057 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 5058 | |
25dbc73a | 5059 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
5060 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5061 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
5062 | if (htab->plt_type != PLT_NEW) |
5063 | htab->params->no_tls_get_addr_opt = TRUE; | |
5064 | ||
5446cbdf | 5065 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
5066 | { |
5067 | struct elf_link_hash_entry *opt, *tga; | |
5068 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
5069 | FALSE, FALSE, TRUE); | |
5070 | if (opt != NULL | |
5071 | && (opt->root.type == bfd_link_hash_defined | |
5072 | || opt->root.type == bfd_link_hash_defweak)) | |
5073 | { | |
5074 | /* If glibc supports an optimized __tls_get_addr call stub, | |
5075 | signalled by the presence of __tls_get_addr_opt, and we'll | |
5076 | be calling __tls_get_addr via a plt call stub, then | |
5077 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
5078 | tga = htab->tls_get_addr; | |
5079 | if (htab->elf.dynamic_sections_created | |
5080 | && tga != NULL | |
5081 | && (tga->type == STT_FUNC | |
5082 | || tga->needs_plt) | |
5083 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
21d68fcd | 5084 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga))) |
a7f2871e AM |
5085 | { |
5086 | struct plt_entry *ent; | |
32af9f6e AM |
5087 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
5088 | if (ent->plt.refcount > 0) | |
5089 | break; | |
5090 | if (ent != NULL) | |
a7f2871e AM |
5091 | { |
5092 | tga->root.type = bfd_link_hash_indirect; | |
5093 | tga->root.u.i.link = &opt->root; | |
5094 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 5095 | opt->mark = 1; |
a7f2871e AM |
5096 | if (opt->dynindx != -1) |
5097 | { | |
5098 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
5099 | opt->dynindx = -1; | |
5100 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5101 | opt->dynstr_index); | |
5102 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
5103 | return FALSE; | |
5104 | } | |
5105 | htab->tls_get_addr = opt; | |
5106 | } | |
5107 | } | |
5108 | } | |
5109 | else | |
5446cbdf | 5110 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 5111 | } |
4a3dc543 | 5112 | if (htab->plt_type == PLT_NEW |
ce558b89 AM |
5113 | && htab->elf.splt != NULL |
5114 | && htab->elf.splt->output_section != NULL) | |
d7128ce4 | 5115 | { |
ce558b89 AM |
5116 | elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS; |
5117 | elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE; | |
d7128ce4 AM |
5118 | } |
5119 | ||
25dbc73a | 5120 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
5121 | } |
5122 | ||
3a71aa26 AM |
5123 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
5124 | HASH. */ | |
5125 | ||
5126 | static bfd_boolean | |
5127 | branch_reloc_hash_match (const bfd *ibfd, | |
5128 | const Elf_Internal_Rela *rel, | |
5129 | const struct elf_link_hash_entry *hash) | |
5130 | { | |
5131 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5132 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
5133 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
5134 | ||
e054468f | 5135 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
5136 | { |
5137 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5138 | struct elf_link_hash_entry *h; | |
5139 | ||
5140 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5141 | while (h->root.type == bfd_link_hash_indirect | |
5142 | || h->root.type == bfd_link_hash_warning) | |
5143 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5144 | if (h == hash) | |
5145 | return TRUE; | |
5146 | } | |
5147 | return FALSE; | |
5148 | } | |
5149 | ||
25dbc73a AM |
5150 | /* Run through all the TLS relocs looking for optimization |
5151 | opportunities. */ | |
252b5132 | 5152 | |
25dbc73a AM |
5153 | bfd_boolean |
5154 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
5155 | struct bfd_link_info *info) | |
252b5132 | 5156 | { |
7fce784e | 5157 | bfd *ibfd; |
25dbc73a AM |
5158 | asection *sec; |
5159 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 5160 | int pass; |
252b5132 | 5161 | |
3cbc1e5e | 5162 | if (!bfd_link_executable (info)) |
25dbc73a | 5163 | return TRUE; |
252b5132 | 5164 | |
7619e7c7 | 5165 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
5166 | if (htab == NULL) |
5167 | return FALSE; | |
5168 | ||
b7fcf6f6 AM |
5169 | /* Make two passes through the relocs. First time check that tls |
5170 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
5171 | followed by such a call. If they are not, don't do any tls |
5172 | optimization. On the second pass twiddle tls_mask flags to | |
5173 | notify relocate_section that optimization can be done, and | |
5174 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 5175 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 5176 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 AM |
5177 | { |
5178 | Elf_Internal_Sym *locsyms = NULL; | |
0ffa91dd | 5179 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 5180 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 5181 | |
b7fcf6f6 AM |
5182 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
5183 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5184 | { | |
5185 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 5186 | int expecting_tls_get_addr = 0; |
252b5132 | 5187 | |
b7fcf6f6 AM |
5188 | /* Read the relocations. */ |
5189 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5190 | info->keep_memory); | |
5191 | if (relstart == NULL) | |
5192 | return FALSE; | |
7619e7c7 | 5193 | |
b7fcf6f6 AM |
5194 | relend = relstart + sec->reloc_count; |
5195 | for (rel = relstart; rel < relend; rel++) | |
5196 | { | |
5197 | enum elf_ppc_reloc_type r_type; | |
5198 | unsigned long r_symndx; | |
5199 | struct elf_link_hash_entry *h = NULL; | |
5200 | char *tls_mask; | |
5201 | char tls_set, tls_clear; | |
5202 | bfd_boolean is_local; | |
b7fcf6f6 AM |
5203 | bfd_signed_vma *got_count; |
5204 | ||
5205 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5206 | if (r_symndx >= symtab_hdr->sh_info) | |
5207 | { | |
5208 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 5209 | |
b7fcf6f6 AM |
5210 | sym_hashes = elf_sym_hashes (ibfd); |
5211 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5212 | while (h->root.type == bfd_link_hash_indirect | |
5213 | || h->root.type == bfd_link_hash_warning) | |
5214 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5215 | } | |
7619e7c7 | 5216 | |
b7fcf6f6 AM |
5217 | is_local = FALSE; |
5218 | if (h == NULL | |
5219 | || !h->def_dynamic) | |
5220 | is_local = TRUE; | |
7619e7c7 | 5221 | |
b7fcf6f6 | 5222 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
5223 | /* If this section has old-style __tls_get_addr calls |
5224 | without marker relocs, then check that each | |
5225 | __tls_get_addr call reloc is preceded by a reloc | |
5226 | that conceivably belongs to the __tls_get_addr arg | |
5227 | setup insn. If we don't find matching arg setup | |
5228 | relocs, don't do any tls optimization. */ | |
5229 | if (pass == 0 | |
5230 | && sec->has_tls_get_addr_call | |
5231 | && h != NULL | |
5232 | && h == htab->tls_get_addr | |
5233 | && !expecting_tls_get_addr | |
5234 | && is_branch_reloc (r_type)) | |
5235 | { | |
25f53a85 | 5236 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
5237 | "TLS optimization disabled\n", |
5238 | ibfd, sec, rel->r_offset); | |
5239 | if (elf_section_data (sec)->relocs != relstart) | |
5240 | free (relstart); | |
5241 | return TRUE; | |
5242 | } | |
5243 | ||
5244 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
5245 | switch (r_type) |
5246 | { | |
5247 | case R_PPC_GOT_TLSLD16: | |
5248 | case R_PPC_GOT_TLSLD16_LO: | |
5249 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5250 | /* Fall through. */ |
b7fcf6f6 AM |
5251 | |
5252 | case R_PPC_GOT_TLSLD16_HI: | |
5253 | case R_PPC_GOT_TLSLD16_HA: | |
5254 | /* These relocs should never be against a symbol | |
5255 | defined in a shared lib. Leave them alone if | |
5256 | that turns out to be the case. */ | |
5257 | if (!is_local) | |
5258 | continue; | |
5259 | ||
5260 | /* LD -> LE */ | |
5261 | tls_set = 0; | |
5262 | tls_clear = TLS_LD; | |
5263 | break; | |
5264 | ||
5265 | case R_PPC_GOT_TLSGD16: | |
5266 | case R_PPC_GOT_TLSGD16_LO: | |
5267 | expecting_tls_get_addr = 1; | |
1a0670f3 | 5268 | /* Fall through. */ |
b7fcf6f6 AM |
5269 | |
5270 | case R_PPC_GOT_TLSGD16_HI: | |
5271 | case R_PPC_GOT_TLSGD16_HA: | |
5272 | if (is_local) | |
5273 | /* GD -> LE */ | |
5274 | tls_set = 0; | |
5275 | else | |
5276 | /* GD -> IE */ | |
5277 | tls_set = TLS_TLS | TLS_TPRELGD; | |
5278 | tls_clear = TLS_GD; | |
5279 | break; | |
5280 | ||
5281 | case R_PPC_GOT_TPREL16: | |
5282 | case R_PPC_GOT_TPREL16_LO: | |
5283 | case R_PPC_GOT_TPREL16_HI: | |
5284 | case R_PPC_GOT_TPREL16_HA: | |
5285 | if (is_local) | |
5286 | { | |
5287 | /* IE -> LE */ | |
5288 | tls_set = 0; | |
5289 | tls_clear = TLS_TPREL; | |
5290 | break; | |
5291 | } | |
5292 | else | |
5293 | continue; | |
5294 | ||
32af9f6e AM |
5295 | case R_PPC_TLSGD: |
5296 | case R_PPC_TLSLD: | |
5297 | expecting_tls_get_addr = 2; | |
5298 | tls_set = 0; | |
5299 | tls_clear = 0; | |
5300 | break; | |
5301 | ||
b7fcf6f6 | 5302 | default: |
25dbc73a | 5303 | continue; |
b7fcf6f6 | 5304 | } |
25dbc73a | 5305 | |
b7fcf6f6 AM |
5306 | if (pass == 0) |
5307 | { | |
727fc41e | 5308 | if (!expecting_tls_get_addr |
32af9f6e AM |
5309 | || (expecting_tls_get_addr == 1 |
5310 | && !sec->has_tls_get_addr_call)) | |
b7fcf6f6 | 5311 | continue; |
25dbc73a | 5312 | |
3a71aa26 AM |
5313 | if (rel + 1 < relend |
5314 | && branch_reloc_hash_match (ibfd, rel + 1, | |
5315 | htab->tls_get_addr)) | |
5316 | continue; | |
25dbc73a | 5317 | |
b7fcf6f6 AM |
5318 | /* Uh oh, we didn't find the expected call. We |
5319 | could just mark this symbol to exclude it | |
5320 | from tls optimization but it's safer to skip | |
663a1470 | 5321 | the entire optimization. */ |
25f53a85 | 5322 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
5323 | "TLS optimization disabled\n"), |
5324 | ibfd, sec, rel->r_offset); | |
5325 | if (elf_section_data (sec)->relocs != relstart) | |
5326 | free (relstart); | |
5327 | return TRUE; | |
b7fcf6f6 | 5328 | } |
25dbc73a | 5329 | |
32af9f6e AM |
5330 | if (expecting_tls_get_addr) |
5331 | { | |
5332 | struct plt_entry *ent; | |
5333 | bfd_vma addend = 0; | |
5334 | ||
0e1862bb | 5335 | if (bfd_link_pic (info) |
32af9f6e AM |
5336 | && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24) |
5337 | addend = rel[1].r_addend; | |
5338 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
5339 | got2, addend); | |
5340 | if (ent != NULL && ent->plt.refcount > 0) | |
5341 | ent->plt.refcount -= 1; | |
5342 | ||
5343 | if (expecting_tls_get_addr == 2) | |
5344 | continue; | |
5345 | } | |
5346 | ||
b7fcf6f6 AM |
5347 | if (h != NULL) |
5348 | { | |
5349 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
5350 | got_count = &h->got.refcount; | |
5351 | } | |
5352 | else | |
5353 | { | |
b7fcf6f6 | 5354 | bfd_signed_vma *lgot_refs; |
e054468f | 5355 | struct plt_entry **local_plt; |
b7fcf6f6 | 5356 | char *lgot_masks; |
25dbc73a | 5357 | |
b7fcf6f6 AM |
5358 | if (locsyms == NULL) |
5359 | { | |
5360 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5361 | if (locsyms == NULL) | |
5362 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5363 | symtab_hdr->sh_info, | |
5364 | 0, NULL, NULL, NULL); | |
5365 | if (locsyms == NULL) | |
5366 | { | |
5367 | if (elf_section_data (sec)->relocs != relstart) | |
5368 | free (relstart); | |
5369 | return FALSE; | |
5370 | } | |
5371 | } | |
b7fcf6f6 AM |
5372 | lgot_refs = elf_local_got_refcounts (ibfd); |
5373 | if (lgot_refs == NULL) | |
5374 | abort (); | |
e054468f AM |
5375 | local_plt = (struct plt_entry **) |
5376 | (lgot_refs + symtab_hdr->sh_info); | |
5377 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
5378 | tls_mask = &lgot_masks[r_symndx]; |
5379 | got_count = &lgot_refs[r_symndx]; | |
5380 | } | |
25dbc73a | 5381 | |
b7fcf6f6 AM |
5382 | if (tls_set == 0) |
5383 | { | |
5384 | /* We managed to get rid of a got entry. */ | |
5385 | if (*got_count > 0) | |
5386 | *got_count -= 1; | |
5387 | } | |
25dbc73a | 5388 | |
b7fcf6f6 AM |
5389 | *tls_mask |= tls_set; |
5390 | *tls_mask &= ~tls_clear; | |
5391 | } | |
25dbc73a | 5392 | |
b7fcf6f6 AM |
5393 | if (elf_section_data (sec)->relocs != relstart) |
5394 | free (relstart); | |
5395 | } | |
5396 | ||
5397 | if (locsyms != NULL | |
5398 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
5399 | { | |
5400 | if (!info->keep_memory) | |
5401 | free (locsyms); | |
5402 | else | |
5403 | symtab_hdr->contents = (unsigned char *) locsyms; | |
5404 | } | |
5405 | } | |
9a23f96e | 5406 | htab->do_tls_opt = 1; |
25dbc73a AM |
5407 | return TRUE; |
5408 | } | |
5409 | \f | |
98bbb1b8 | 5410 | /* Find dynamic relocs for H that apply to read-only sections. */ |
625af618 | 5411 | |
98bbb1b8 AM |
5412 | static asection * |
5413 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
625af618 | 5414 | { |
6061a67d | 5415 | struct elf_dyn_relocs *p; |
625af618 AM |
5416 | |
5417 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5418 | { | |
5419 | asection *s = p->sec->output_section; | |
5420 | ||
98bbb1b8 AM |
5421 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
5422 | return p->sec; | |
625af618 | 5423 | } |
98bbb1b8 | 5424 | return NULL; |
625af618 AM |
5425 | } |
5426 | ||
287c7eaf AM |
5427 | /* Return true if we have dynamic relocs against H or any of its weak |
5428 | aliases, that apply to read-only sections. Cannot be used after | |
5429 | size_dynamic_sections. */ | |
5430 | ||
5431 | static bfd_boolean | |
5432 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5433 | { | |
5434 | struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h); | |
5435 | do | |
5436 | { | |
5437 | if (readonly_dynrelocs (&eh->elf)) | |
5438 | return TRUE; | |
5439 | eh = ppc_elf_hash_entry (eh->elf.u.alias); | |
5440 | } while (eh != NULL && &eh->elf != h); | |
5441 | ||
5442 | return FALSE; | |
5443 | } | |
5444 | ||
5445 | /* Return whether H has pc-relative dynamic relocs. */ | |
5446 | ||
5447 | static bfd_boolean | |
5448 | pc_dynrelocs (struct elf_link_hash_entry *h) | |
5449 | { | |
5450 | struct elf_dyn_relocs *p; | |
5451 | ||
5452 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5453 | if (p->pc_count != 0) | |
5454 | return TRUE; | |
5455 | return FALSE; | |
5456 | } | |
5457 | ||
25dbc73a AM |
5458 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5459 | regular object. The current definition is in some section of the | |
5460 | dynamic object, but we're not including those sections. We have to | |
5461 | change the definition to something the rest of the link can | |
5462 | understand. */ | |
7fce784e | 5463 | |
25dbc73a AM |
5464 | static bfd_boolean |
5465 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5466 | struct elf_link_hash_entry *h) | |
5467 | { | |
5468 | struct ppc_elf_link_hash_table *htab; | |
5469 | asection *s; | |
7fce784e | 5470 | |
25dbc73a AM |
5471 | #ifdef DEBUG |
5472 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
5473 | h->root.root.string); | |
5474 | #endif | |
252b5132 | 5475 | |
25dbc73a AM |
5476 | /* Make sure we know what is going on here. */ |
5477 | htab = ppc_elf_hash_table (info); | |
5478 | BFD_ASSERT (htab->elf.dynobj != NULL | |
5479 | && (h->needs_plt | |
91e21fb7 | 5480 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 5481 | || h->is_weakalias |
25dbc73a AM |
5482 | || (h->def_dynamic |
5483 | && h->ref_regular | |
5484 | && !h->def_regular))); | |
252b5132 | 5485 | |
25dbc73a AM |
5486 | /* Deal with function syms. */ |
5487 | if (h->type == STT_FUNC | |
e054468f | 5488 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5489 | || h->needs_plt) |
5490 | { | |
529fe20e AM |
5491 | bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h) |
5492 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
287c7eaf AM |
5493 | /* Discard dyn_relocs when non-pic if we've decided that a |
5494 | function symbol is local. */ | |
5495 | if (!bfd_link_pic (info) && local) | |
5496 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
529fe20e | 5497 | |
25dbc73a AM |
5498 | /* Clear procedure linkage table information for any symbol that |
5499 | won't need a .plt entry. */ | |
a6aa5195 AM |
5500 | struct plt_entry *ent; |
5501 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5502 | if (ent->plt.refcount > 0) | |
5503 | break; | |
5504 | if (ent == NULL | |
529fe20e | 5505 | || (h->type != STT_GNU_IFUNC && local)) |
252b5132 | 5506 | { |
25dbc73a | 5507 | /* A PLT entry is not required/allowed when: |
252b5132 | 5508 | |
25dbc73a AM |
5509 | 1. We are not using ld.so; because then the PLT entry |
5510 | can't be set up, so we can't use one. In this case, | |
5511 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 5512 | |
25dbc73a AM |
5513 | 2. GC has rendered the entry unused. |
5514 | ||
5515 | 3. We know for certain that a call to this symbol | |
5516 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 5517 | h->plt.plist = NULL; |
25dbc73a | 5518 | h->needs_plt = 0; |
d1eca1e4 | 5519 | h->pointer_equality_needed = 0; |
25dbc73a | 5520 | } |
625af618 AM |
5521 | else |
5522 | { | |
d1eca1e4 AM |
5523 | /* Taking a function's address in a read/write section |
5524 | doesn't require us to define the function symbol in the | |
1009ef28 | 5525 | executable on a plt call stub. A dynamic reloc can |
f0158f44 AM |
5526 | be used instead, giving better runtime performance. |
5527 | (Calls via that function pointer don't need to bounce | |
5528 | through the plt call stub.) Similarly, use a dynamic | |
5529 | reloc for a weak reference when possible, allowing the | |
5530 | resolution of the symbol to be set at load time rather | |
5531 | than link time. */ | |
5532 | if ((h->pointer_equality_needed | |
3988aed5 AM |
5533 | || (h->non_got_ref |
5534 | && !h->ref_regular_nonweak | |
5535 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
1009ef28 AM |
5536 | && !htab->is_vxworks |
5537 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
98bbb1b8 | 5538 | && !readonly_dynrelocs (h)) |
d1eca1e4 AM |
5539 | { |
5540 | h->pointer_equality_needed = 0; | |
3988aed5 AM |
5541 | /* If we haven't seen a branch reloc then we don't need |
5542 | a plt entry. */ | |
5543 | if (!h->needs_plt) | |
5544 | h->plt.plist = NULL; | |
d1eca1e4 | 5545 | } |
287c7eaf | 5546 | else if (!bfd_link_pic (info)) |
529fe20e AM |
5547 | /* We are going to be defining the function symbol on the |
5548 | plt stub, so no dyn_relocs needed when non-pic. */ | |
287c7eaf | 5549 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
625af618 | 5550 | } |
d3e454b9 | 5551 | h->protected_def = 0; |
3988aed5 | 5552 | /* Function symbols can't have copy relocs. */ |
25dbc73a | 5553 | return TRUE; |
252b5132 | 5554 | } |
25dbc73a | 5555 | else |
a6aa5195 | 5556 | h->plt.plist = NULL; |
252b5132 | 5557 | |
25dbc73a AM |
5558 | /* If this is a weak symbol, and there is a real definition, the |
5559 | processor independent code will have arranged for us to see the | |
5560 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 5561 | if (h->is_weakalias) |
252b5132 | 5562 | { |
60d67dc8 AM |
5563 | struct elf_link_hash_entry *def = weakdef (h); |
5564 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
5565 | h->root.u.def.section = def->root.u.def.section; | |
5566 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
5567 | if (def->root.u.def.section == htab->elf.sdynbss |
5568 | || def->root.u.def.section == htab->elf.sdynrelro | |
5569 | || def->root.u.def.section == htab->dynsbss) | |
5570 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
25dbc73a AM |
5571 | return TRUE; |
5572 | } | |
dc810e39 | 5573 | |
25dbc73a AM |
5574 | /* This is a reference to a symbol defined by a dynamic object which |
5575 | is not a function. */ | |
252b5132 | 5576 | |
25dbc73a AM |
5577 | /* If we are creating a shared library, we must presume that the |
5578 | only references to the symbol are via the global offset table. | |
5579 | For such cases we need not do anything here; the relocations will | |
5580 | be handled correctly by relocate_section. */ | |
0e1862bb | 5581 | if (bfd_link_pic (info)) |
d3e454b9 AM |
5582 | { |
5583 | h->protected_def = 0; | |
5584 | return TRUE; | |
5585 | } | |
252b5132 | 5586 | |
25dbc73a AM |
5587 | /* If there are no references to this symbol that do not use the |
5588 | GOT, we don't need to generate a copy reloc. */ | |
5589 | if (!h->non_got_ref) | |
d3e454b9 AM |
5590 | { |
5591 | h->protected_def = 0; | |
5592 | return TRUE; | |
5593 | } | |
5594 | ||
5595 | /* Protected variables do not work with .dynbss. The copy in | |
5596 | .dynbss won't be used by the shared library with the protected | |
5597 | definition for the variable. Editing to PIC, or text relocations | |
5598 | are preferable to an incorrect program. */ | |
5599 | if (h->protected_def) | |
5600 | { | |
5601 | if (ELIMINATE_COPY_RELOCS | |
5602 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
5603 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
5604 | && htab->params->pic_fixup == 0 | |
5605 | && info->disable_target_specific_optimizations <= 1) | |
5606 | htab->params->pic_fixup = 1; | |
d3e454b9 AM |
5607 | return TRUE; |
5608 | } | |
25dbc73a | 5609 | |
a127494f AM |
5610 | /* If -z nocopyreloc was given, we won't generate them either. */ |
5611 | if (info->nocopyreloc) | |
529fe20e | 5612 | return TRUE; |
a127494f | 5613 | |
dce2246a | 5614 | /* If we don't find any dynamic relocs in read-only sections, then |
cfd2c773 NS |
5615 | we'll be keeping the dynamic relocs and avoiding the copy reloc. |
5616 | We can't do this if there are any small data relocations. This | |
5617 | doesn't work on VxWorks, where we can not have dynamic | |
5618 | relocations (other than copy and jump slot relocations) in an | |
5619 | executable. */ | |
4dc4a9a5 | 5620 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 5621 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
5622 | && !htab->is_vxworks |
5623 | && !h->def_regular | |
287c7eaf | 5624 | && !alias_readonly_dynrelocs (h)) |
529fe20e | 5625 | return TRUE; |
252b5132 | 5626 | |
25dbc73a AM |
5627 | /* We must allocate the symbol in our .dynbss section, which will |
5628 | become part of the .bss section of the executable. There will be | |
5629 | an entry for this symbol in the .dynsym section. The dynamic | |
5630 | object will contain position independent code, so all references | |
5631 | from the dynamic object to this symbol will go through the global | |
5632 | offset table. The dynamic linker will use the .dynsym entry to | |
5633 | determine the address it must put in the global offset table, so | |
5634 | both the dynamic object and the regular object will refer to the | |
5635 | same memory location for the variable. | |
5636 | ||
4dc4a9a5 DJ |
5637 | Of course, if the symbol is referenced using SDAREL relocs, we |
5638 | must instead allocate it in .sbss. */ | |
4dc4a9a5 | 5639 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 5640 | s = htab->dynsbss; |
5474d94f AM |
5641 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
5642 | s = htab->elf.sdynrelro; | |
25dbc73a | 5643 | else |
9d19e4fd | 5644 | s = htab->elf.sdynbss; |
25dbc73a AM |
5645 | BFD_ASSERT (s != NULL); |
5646 | ||
1d7e9d18 | 5647 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
5648 | { |
5649 | asection *srel; | |
5650 | ||
4a7e5234 AM |
5651 | /* We must generate a R_PPC_COPY reloc to tell the dynamic |
5652 | linker to copy the initial value out of the dynamic object | |
5653 | and into the runtime process image. */ | |
4dc4a9a5 | 5654 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 5655 | srel = htab->relsbss; |
5474d94f AM |
5656 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
5657 | srel = htab->elf.sreldynrelro; | |
25dbc73a | 5658 | else |
9d19e4fd | 5659 | srel = htab->elf.srelbss; |
25dbc73a AM |
5660 | BFD_ASSERT (srel != NULL); |
5661 | srel->size += sizeof (Elf32_External_Rela); | |
5662 | h->needs_copy = 1; | |
5663 | } | |
7619e7c7 | 5664 | |
529fe20e | 5665 | /* We no longer want dyn_relocs. */ |
287c7eaf | 5666 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
6cabe1ea | 5667 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
5668 | } |
5669 | \f | |
ac39eb42 AM |
5670 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
5671 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
5672 | specifying the addend on the plt relocation. For -fpic code, the sym | |
5673 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
5674 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
5675 | |
5676 | static bfd_boolean | |
5677 | add_stub_sym (struct plt_entry *ent, | |
5678 | struct elf_link_hash_entry *h, | |
ac39eb42 | 5679 | struct bfd_link_info *info) |
0ba07910 AM |
5680 | { |
5681 | struct elf_link_hash_entry *sh; | |
5682 | size_t len1, len2, len3; | |
5683 | char *name; | |
ac39eb42 AM |
5684 | const char *stub; |
5685 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
5686 | ||
0e1862bb | 5687 | if (bfd_link_pic (info)) |
ac39eb42 AM |
5688 | stub = ".plt_pic32."; |
5689 | else | |
5690 | stub = ".plt_call32."; | |
0ba07910 AM |
5691 | |
5692 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 5693 | len2 = strlen (stub); |
0ba07910 AM |
5694 | len3 = 0; |
5695 | if (ent->sec) | |
5696 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 5697 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
5698 | if (name == NULL) |
5699 | return FALSE; | |
5700 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
5701 | if (ent->sec) | |
5702 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
5703 | memcpy (name + 8 + len3, stub, len2); |
5704 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
5705 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
5706 | if (sh == NULL) | |
5707 | return FALSE; | |
5708 | if (sh->root.type == bfd_link_hash_new) | |
5709 | { | |
5710 | sh->root.type = bfd_link_hash_defined; | |
5711 | sh->root.u.def.section = htab->glink; | |
5712 | sh->root.u.def.value = ent->glink_offset; | |
5713 | sh->ref_regular = 1; | |
5714 | sh->def_regular = 1; | |
5715 | sh->ref_regular_nonweak = 1; | |
5716 | sh->forced_local = 1; | |
5717 | sh->non_elf = 0; | |
2ec55de3 | 5718 | sh->root.linker_def = 1; |
0ba07910 AM |
5719 | } |
5720 | return TRUE; | |
5721 | } | |
5722 | ||
3b36f7e6 AM |
5723 | /* Allocate NEED contiguous space in .got, and return the offset. |
5724 | Handles allocation of the got header when crossing 32k. */ | |
5725 | ||
5726 | static bfd_vma | |
5727 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5728 | { | |
5729 | bfd_vma where; | |
4a3dc543 | 5730 | unsigned int max_before_header; |
3b36f7e6 | 5731 | |
4a3dc543 | 5732 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 | 5733 | { |
ce558b89 AM |
5734 | where = htab->elf.sgot->size; |
5735 | htab->elf.sgot->size += need; | |
9d8504b1 | 5736 | } |
3b36f7e6 AM |
5737 | else |
5738 | { | |
4a3dc543 RS |
5739 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5740 | if (need <= htab->got_gap) | |
3b36f7e6 | 5741 | { |
4a3dc543 RS |
5742 | where = max_before_header - htab->got_gap; |
5743 | htab->got_gap -= need; | |
5744 | } | |
5745 | else | |
5746 | { | |
ce558b89 AM |
5747 | if (htab->elf.sgot->size + need > max_before_header |
5748 | && htab->elf.sgot->size <= max_before_header) | |
4a3dc543 | 5749 | { |
ce558b89 AM |
5750 | htab->got_gap = max_before_header - htab->elf.sgot->size; |
5751 | htab->elf.sgot->size = max_before_header + htab->got_header_size; | |
4a3dc543 | 5752 | } |
ce558b89 AM |
5753 | where = htab->elf.sgot->size; |
5754 | htab->elf.sgot->size += need; | |
3b36f7e6 | 5755 | } |
3b36f7e6 AM |
5756 | } |
5757 | return where; | |
5758 | } | |
5759 | ||
f15d0b54 AM |
5760 | /* Calculate size of GOT entries for symbol given its TLS_MASK. |
5761 | TLS_LD is excluded because those go in a special GOT slot. */ | |
5762 | ||
5763 | static inline unsigned int | |
5764 | got_entries_needed (int tls_mask) | |
5765 | { | |
5766 | unsigned int need; | |
5767 | if ((tls_mask & TLS_TLS) == 0) | |
5768 | need = 4; | |
5769 | else | |
5770 | { | |
5771 | need = 0; | |
5772 | if ((tls_mask & TLS_GD) != 0) | |
5773 | need += 8; | |
5774 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5775 | need += 4; | |
5776 | if ((tls_mask & TLS_DTPREL) != 0) | |
5777 | need += 4; | |
5778 | } | |
5779 | return need; | |
5780 | } | |
5781 | ||
5782 | /* Calculate size of relocs needed for symbol given its TLS_MASK and | |
5783 | NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at | |
5784 | link time. */ | |
5785 | ||
5786 | static inline unsigned int | |
5787 | got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known) | |
5788 | { | |
5789 | /* All the entries we allocated need relocs. | |
5790 | Except IE in executable with a local symbol. We could also omit | |
5791 | the DTPREL reloc on the second word of a GD entry under the same | |
5792 | condition as that for IE, but ld.so needs to differentiate | |
5793 | LD and GD entries. */ | |
5794 | if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known) | |
5795 | need -= 4; | |
5796 | return need * sizeof (Elf32_External_Rela) / 4; | |
5797 | } | |
5798 | ||
46434633 | 5799 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
5800 | |
5801 | static bfd_boolean | |
46434633 AM |
5802 | ensure_undef_dynamic (struct bfd_link_info *info, |
5803 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
5804 | { |
5805 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5806 | ||
5807 | if (htab->dynamic_sections_created | |
46434633 AM |
5808 | && ((info->dynamic_undefined_weak != 0 |
5809 | && h->root.type == bfd_link_hash_undefweak) | |
5810 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
5811 | && h->dynindx == -1 |
5812 | && !h->forced_local | |
5813 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5814 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
5815 | return TRUE; | |
5816 | } | |
5817 | ||
25dbc73a | 5818 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5819 | |
b34976b6 | 5820 | static bfd_boolean |
25dbc73a | 5821 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5822 | { |
25dbc73a AM |
5823 | struct bfd_link_info *info = inf; |
5824 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5825 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5826 | struct elf_dyn_relocs *p; |
f0158f44 | 5827 | bfd_boolean dyn; |
252b5132 | 5828 | |
25dbc73a | 5829 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5830 | return TRUE; |
252b5132 | 5831 | |
7619e7c7 | 5832 | htab = ppc_elf_hash_table (info); |
25dbc73a | 5833 | eh = (struct ppc_elf_link_hash_entry *) h; |
d3e454b9 AM |
5834 | if (eh->elf.got.refcount > 0 |
5835 | || (ELIMINATE_COPY_RELOCS | |
5836 | && !eh->elf.def_regular | |
5837 | && eh->elf.protected_def | |
5838 | && eh->has_addr16_ha | |
5839 | && eh->has_addr16_lo | |
5840 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5841 | { |
d6e14abc AM |
5842 | unsigned int need; |
5843 | ||
46434633 AM |
5844 | /* Make sure this symbol is output as a dynamic symbol. */ |
5845 | if (!ensure_undef_dynamic (info, &eh->elf)) | |
f0158f44 | 5846 | return FALSE; |
252b5132 | 5847 | |
d6e14abc | 5848 | need = 0; |
f15d0b54 | 5849 | if ((eh->tls_mask & TLS_LD) != 0) |
25dbc73a | 5850 | { |
f15d0b54 AM |
5851 | if (!eh->elf.def_dynamic) |
5852 | /* We'll just use htab->tlsld_got.offset. This should | |
5853 | always be the case. It's a little odd if we have | |
5854 | a local dynamic reloc against a non-local symbol. */ | |
5855 | htab->tlsld_got.refcount += 1; | |
5856 | else | |
d6e14abc | 5857 | need += 8; |
d6e14abc | 5858 | } |
f15d0b54 | 5859 | need += got_entries_needed (eh->tls_mask); |
d6e14abc AM |
5860 | if (need == 0) |
5861 | eh->elf.got.offset = (bfd_vma) -1; | |
5862 | else | |
5863 | { | |
3b36f7e6 | 5864 | eh->elf.got.offset = allocate_got (htab, need); |
0e1862bb | 5865 | if ((bfd_link_pic (info) |
f0158f44 AM |
5866 | || (htab->elf.dynamic_sections_created |
5867 | && eh->elf.dynindx != -1 | |
5868 | && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
21d68fcd | 5869 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf)) |
252b5132 | 5870 | { |
f15d0b54 AM |
5871 | asection *rsec; |
5872 | bfd_boolean tprel_known = (bfd_link_executable (info) | |
5873 | && SYMBOL_REFERENCES_LOCAL (info, | |
5874 | &eh->elf)); | |
5875 | ||
5876 | need = got_relocs_needed (eh->tls_mask, need, tprel_known); | |
5877 | if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic) | |
5878 | need -= sizeof (Elf32_External_Rela); | |
5879 | rsec = htab->elf.srelgot; | |
0bed072f | 5880 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5881 | rsec = htab->elf.irelplt; |
f15d0b54 | 5882 | rsec->size += need; |
252b5132 | 5883 | } |
25dbc73a AM |
5884 | } |
5885 | } | |
5886 | else | |
5887 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5888 | |
954b63d4 AM |
5889 | /* If no dynamic sections we can't have dynamic relocs, except for |
5890 | IFUNCs which are handled even in static executables. */ | |
f0158f44 AM |
5891 | if (!htab->elf.dynamic_sections_created |
5892 | && h->type != STT_GNU_IFUNC) | |
5893 | eh->dyn_relocs = NULL; | |
5894 | ||
529fe20e AM |
5895 | /* Discard relocs on undefined symbols that must be local. */ |
5896 | else if (h->root.type == bfd_link_hash_undefined | |
5897 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
5898 | eh->dyn_relocs = NULL; | |
5899 | ||
5900 | /* Also discard relocs on undefined weak syms with non-default | |
5901 | visibility, or when dynamic_undefined_weak says so. */ | |
5902 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
5903 | eh->dyn_relocs = NULL; | |
5904 | ||
f0158f44 | 5905 | if (eh->dyn_relocs == NULL) |
287c7eaf | 5906 | ; |
252b5132 | 5907 | |
25dbc73a AM |
5908 | /* In the shared -Bsymbolic case, discard space allocated for |
5909 | dynamic pc-relative relocs against symbols which turn out to be | |
5910 | defined in regular objects. For the normal shared case, discard | |
5911 | space for relocs that have become local due to symbol visibility | |
5912 | changes. */ | |
f0158f44 | 5913 | else if (bfd_link_pic (info)) |
25dbc73a AM |
5914 | { |
5915 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 5916 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
5917 | generated via assembly. We want calls to protected symbols to |
5918 | resolve directly to the function rather than going via the plt. | |
5919 | If people want function pointer comparisons to work as expected | |
5920 | then they should avoid writing weird assembly. */ | |
529fe20e | 5921 | if (SYMBOL_CALLS_LOCAL (info, h)) |
25dbc73a | 5922 | { |
6061a67d | 5923 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
5924 | |
5925 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 5926 | { |
25dbc73a AM |
5927 | p->count -= p->pc_count; |
5928 | p->pc_count = 0; | |
5929 | if (p->count == 0) | |
5930 | *pp = p->next; | |
5931 | else | |
5932 | pp = &p->next; | |
252b5132 | 5933 | } |
25dbc73a | 5934 | } |
252b5132 | 5935 | |
3348747a NS |
5936 | if (htab->is_vxworks) |
5937 | { | |
6061a67d | 5938 | struct elf_dyn_relocs **pp; |
3348747a NS |
5939 | |
5940 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5941 | { | |
5942 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
5943 | *pp = p->next; | |
5944 | else | |
5945 | pp = &p->next; | |
5946 | } | |
5947 | } | |
5948 | ||
954b63d4 | 5949 | if (eh->dyn_relocs != NULL) |
25dbc73a | 5950 | { |
46434633 AM |
5951 | /* Make sure this symbol is output as a dynamic symbol. */ |
5952 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5953 | return FALSE; |
25dbc73a AM |
5954 | } |
5955 | } | |
5956 | else if (ELIMINATE_COPY_RELOCS) | |
5957 | { | |
f0158f44 | 5958 | /* For the non-pic case, discard space for relocs against |
25dbc73a AM |
5959 | symbols which turn out to need copy relocs or are not |
5960 | dynamic. */ | |
529fe20e | 5961 | if (h->dynamic_adjusted |
d3e454b9 | 5962 | && !h->def_regular |
529fe20e | 5963 | && !ELF_COMMON_DEF_P (h) |
d3e454b9 AM |
5964 | && !(h->protected_def |
5965 | && eh->has_addr16_ha | |
5966 | && eh->has_addr16_lo | |
5967 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5968 | { |
46434633 AM |
5969 | /* Make sure this symbol is output as a dynamic symbol. */ |
5970 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5971 | return FALSE; |
7619e7c7 | 5972 | |
f0158f44 | 5973 | if (h->dynindx == -1) |
287c7eaf | 5974 | eh->dyn_relocs = NULL; |
25dbc73a | 5975 | } |
f0158f44 | 5976 | else |
287c7eaf | 5977 | eh->dyn_relocs = NULL; |
25dbc73a | 5978 | } |
252b5132 | 5979 | |
f0158f44 | 5980 | /* Allocate space. */ |
25dbc73a AM |
5981 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5982 | { | |
5983 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 5984 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5985 | sreloc = htab->elf.irelplt; |
25dbc73a AM |
5986 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
5987 | } | |
252b5132 | 5988 | |
f0158f44 AM |
5989 | /* Handle PLT relocs. Done last, after dynindx has settled. */ |
5990 | dyn = htab->elf.dynamic_sections_created && h->dynindx != -1; | |
5991 | if (dyn || h->type == STT_GNU_IFUNC) | |
5992 | { | |
5993 | struct plt_entry *ent; | |
5994 | bfd_boolean doneone = FALSE; | |
5995 | bfd_vma plt_offset = 0, glink_offset = 0; | |
5996 | ||
5997 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5998 | if (ent->plt.refcount > 0) | |
5999 | { | |
6000 | asection *s = htab->elf.splt; | |
6001 | ||
6002 | if (!dyn) | |
6003 | s = htab->elf.iplt; | |
6004 | ||
6005 | if (htab->plt_type == PLT_NEW || !dyn) | |
6006 | { | |
6007 | if (!doneone) | |
6008 | { | |
6009 | plt_offset = s->size; | |
6010 | s->size += 4; | |
6011 | } | |
6012 | ent->plt.offset = plt_offset; | |
6013 | ||
6014 | s = htab->glink; | |
6015 | if (!doneone || bfd_link_pic (info)) | |
6016 | { | |
6017 | glink_offset = s->size; | |
6018 | s->size += GLINK_ENTRY_SIZE; | |
6019 | if (h == htab->tls_get_addr | |
6020 | && !htab->params->no_tls_get_addr_opt) | |
6021 | s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE; | |
6022 | } | |
6023 | if (!doneone | |
6024 | && !bfd_link_pic (info) | |
6025 | && h->def_dynamic | |
6026 | && !h->def_regular) | |
6027 | { | |
6028 | h->root.u.def.section = s; | |
6029 | h->root.u.def.value = glink_offset; | |
6030 | } | |
6031 | ent->glink_offset = glink_offset; | |
6032 | ||
6033 | if (htab->params->emit_stub_syms | |
6034 | && !add_stub_sym (ent, h, info)) | |
6035 | return FALSE; | |
6036 | } | |
6037 | else | |
6038 | { | |
6039 | if (!doneone) | |
6040 | { | |
6041 | /* If this is the first .plt entry, make room | |
6042 | for the special first entry. */ | |
6043 | if (s->size == 0) | |
6044 | s->size += htab->plt_initial_entry_size; | |
6045 | ||
6046 | /* The PowerPC PLT is actually composed of two | |
6047 | parts, the first part is 2 words (for a load | |
6048 | and a jump), and then there is a remaining | |
6049 | word available at the end. */ | |
6050 | plt_offset = (htab->plt_initial_entry_size | |
6051 | + (htab->plt_slot_size | |
6052 | * ((s->size | |
6053 | - htab->plt_initial_entry_size) | |
6054 | / htab->plt_entry_size))); | |
6055 | ||
6056 | /* If this symbol is not defined in a regular | |
6057 | file, and we are not generating a shared | |
6058 | library, then set the symbol to this location | |
6059 | in the .plt. This is to avoid text | |
6060 | relocations, and is required to make | |
6061 | function pointers compare as equal between | |
6062 | the normal executable and the shared library. */ | |
6063 | if (! bfd_link_pic (info) | |
6064 | && h->def_dynamic | |
6065 | && !h->def_regular) | |
6066 | { | |
6067 | h->root.u.def.section = s; | |
6068 | h->root.u.def.value = plt_offset; | |
6069 | } | |
6070 | ||
6071 | /* Make room for this entry. */ | |
6072 | s->size += htab->plt_entry_size; | |
6073 | /* After the 8192nd entry, room for two entries | |
6074 | is allocated. */ | |
6075 | if (htab->plt_type == PLT_OLD | |
6076 | && (s->size - htab->plt_initial_entry_size) | |
6077 | / htab->plt_entry_size | |
6078 | > PLT_NUM_SINGLE_ENTRIES) | |
6079 | s->size += htab->plt_entry_size; | |
6080 | } | |
6081 | ent->plt.offset = plt_offset; | |
6082 | } | |
6083 | ||
6084 | /* We also need to make an entry in the .rela.plt section. */ | |
6085 | if (!doneone) | |
6086 | { | |
6087 | if (!dyn) | |
6088 | htab->elf.irelplt->size += sizeof (Elf32_External_Rela); | |
6089 | else | |
6090 | { | |
6091 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
6092 | ||
6093 | if (htab->plt_type == PLT_VXWORKS) | |
6094 | { | |
6095 | /* Allocate space for the unloaded relocations. */ | |
6096 | if (!bfd_link_pic (info) | |
6097 | && htab->elf.dynamic_sections_created) | |
6098 | { | |
6099 | if (ent->plt.offset | |
6100 | == (bfd_vma) htab->plt_initial_entry_size) | |
6101 | { | |
6102 | htab->srelplt2->size | |
6103 | += (sizeof (Elf32_External_Rela) | |
6104 | * VXWORKS_PLTRESOLVE_RELOCS); | |
6105 | } | |
6106 | ||
6107 | htab->srelplt2->size | |
6108 | += (sizeof (Elf32_External_Rela) | |
6109 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
6110 | } | |
6111 | ||
6112 | /* Every PLT entry has an associated GOT entry in | |
6113 | .got.plt. */ | |
6114 | htab->elf.sgotplt->size += 4; | |
6115 | } | |
6116 | } | |
6117 | doneone = TRUE; | |
6118 | } | |
6119 | } | |
6120 | else | |
6121 | ent->plt.offset = (bfd_vma) -1; | |
6122 | ||
6123 | if (!doneone) | |
6124 | { | |
6125 | h->plt.plist = NULL; | |
6126 | h->needs_plt = 0; | |
6127 | } | |
6128 | } | |
6129 | else | |
6130 | { | |
6131 | h->plt.plist = NULL; | |
6132 | h->needs_plt = 0; | |
6133 | } | |
6134 | ||
25dbc73a AM |
6135 | return TRUE; |
6136 | } | |
7619e7c7 | 6137 | |
625af618 AM |
6138 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
6139 | read-only sections. */ | |
7619e7c7 | 6140 | |
25dbc73a | 6141 | static bfd_boolean |
0caf6c82 | 6142 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
25dbc73a | 6143 | { |
98bbb1b8 | 6144 | asection *sec; |
0caf6c82 | 6145 | |
25dbc73a AM |
6146 | if (h->root.type == bfd_link_hash_indirect) |
6147 | return TRUE; | |
252b5132 | 6148 | |
98bbb1b8 AM |
6149 | sec = readonly_dynrelocs (h); |
6150 | if (sec != NULL) | |
25dbc73a | 6151 | { |
98bbb1b8 AM |
6152 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
6153 | ||
0caf6c82 | 6154 | info->flags |= DF_TEXTREL; |
98bbb1b8 | 6155 | info->callbacks->minfo |
63c1f59d AM |
6156 | (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"), |
6157 | sec->owner, h->root.root.string, sec); | |
ee05f2fe | 6158 | |
625af618 AM |
6159 | /* Not an error, just cut short the traversal. */ |
6160 | return FALSE; | |
25dbc73a AM |
6161 | } |
6162 | return TRUE; | |
6163 | } | |
6164 | ||
6177242a AM |
6165 | static const unsigned char glink_eh_frame_cie[] = |
6166 | { | |
6167 | 0, 0, 0, 16, /* length. */ | |
6168 | 0, 0, 0, 0, /* id. */ | |
6169 | 1, /* CIE version. */ | |
6170 | 'z', 'R', 0, /* Augmentation string. */ | |
6171 | 4, /* Code alignment. */ | |
6172 | 0x7c, /* Data alignment. */ | |
6173 | 65, /* RA reg. */ | |
6174 | 1, /* Augmentation size. */ | |
6175 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
6176 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
6177 | }; | |
6178 | ||
25dbc73a AM |
6179 | /* Set the sizes of the dynamic sections. */ |
6180 | ||
6181 | static bfd_boolean | |
93d1b056 | 6182 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
6183 | struct bfd_link_info *info) |
6184 | { | |
6185 | struct ppc_elf_link_hash_table *htab; | |
6186 | asection *s; | |
6187 | bfd_boolean relocs; | |
6188 | bfd *ibfd; | |
7fce784e | 6189 | |
252b5132 | 6190 | #ifdef DEBUG |
25dbc73a | 6191 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 6192 | #endif |
252b5132 | 6193 | |
25dbc73a AM |
6194 | htab = ppc_elf_hash_table (info); |
6195 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 6196 | |
25dbc73a AM |
6197 | if (elf_hash_table (info)->dynamic_sections_created) |
6198 | { | |
6199 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 6200 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 6201 | { |
3d4d4302 | 6202 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
6203 | BFD_ASSERT (s != NULL); |
6204 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6205 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6206 | } | |
6207 | } | |
252b5132 | 6208 | |
4a3dc543 | 6209 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 6210 | htab->got_header_size = 16; |
4a3dc543 | 6211 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 6212 | htab->got_header_size = 12; |
252b5132 | 6213 | |
25dbc73a AM |
6214 | /* Set up .got offsets for local syms, and space for local dynamic |
6215 | relocs. */ | |
c72f2fb2 | 6216 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
6217 | { |
6218 | bfd_signed_vma *local_got; | |
6219 | bfd_signed_vma *end_local_got; | |
e054468f AM |
6220 | struct plt_entry **local_plt; |
6221 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
6222 | char *lgot_masks; |
6223 | bfd_size_type locsymcount; | |
6224 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 6225 | |
0c8d6e5c | 6226 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 6227 | continue; |
7fce784e | 6228 | |
25dbc73a AM |
6229 | for (s = ibfd->sections; s != NULL; s = s->next) |
6230 | { | |
f95f8542 | 6231 | struct ppc_dyn_relocs *p; |
252b5132 | 6232 | |
f95f8542 | 6233 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
6234 | elf_section_data (s)->local_dynrel); |
6235 | p != NULL; | |
6236 | p = p->next) | |
6237 | { | |
6238 | if (!bfd_is_abs_section (p->sec) | |
6239 | && bfd_is_abs_section (p->sec->output_section)) | |
6240 | { | |
6241 | /* Input section has been discarded, either because | |
6242 | it is a copy of a linkonce section or due to | |
6243 | linker script /DISCARD/, so we'll be discarding | |
6244 | the relocs too. */ | |
7fce784e | 6245 | } |
3348747a NS |
6246 | else if (htab->is_vxworks |
6247 | && strcmp (p->sec->output_section->name, | |
6248 | ".tls_vars") == 0) | |
6249 | { | |
6250 | /* Relocations in vxworks .tls_vars sections are | |
6251 | handled specially by the loader. */ | |
6252 | } | |
25dbc73a | 6253 | else if (p->count != 0) |
7fce784e | 6254 | { |
25f23106 | 6255 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 6256 | if (p->ifunc) |
ce558b89 | 6257 | sreloc = htab->elf.irelplt; |
25f23106 | 6258 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
25dbc73a AM |
6259 | if ((p->sec->output_section->flags |
6260 | & (SEC_READONLY | SEC_ALLOC)) | |
6261 | == (SEC_READONLY | SEC_ALLOC)) | |
0caf6c82 L |
6262 | { |
6263 | info->flags |= DF_TEXTREL; | |
6264 | info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"), | |
6265 | p->sec->owner, p->sec); | |
6266 | } | |
7fce784e | 6267 | } |
252b5132 | 6268 | } |
252b5132 | 6269 | } |
252b5132 | 6270 | |
25dbc73a AM |
6271 | local_got = elf_local_got_refcounts (ibfd); |
6272 | if (!local_got) | |
6273 | continue; | |
252b5132 | 6274 | |
0ffa91dd | 6275 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
6276 | locsymcount = symtab_hdr->sh_info; |
6277 | end_local_got = local_got + locsymcount; | |
e054468f AM |
6278 | local_plt = (struct plt_entry **) end_local_got; |
6279 | end_local_plt = local_plt + locsymcount; | |
6280 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 6281 | |
25dbc73a AM |
6282 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
6283 | if (*local_got > 0) | |
6284 | { | |
f15d0b54 AM |
6285 | unsigned int need; |
6286 | if ((*lgot_masks & TLS_LD) != 0) | |
6287 | htab->tlsld_got.refcount += 1; | |
6288 | need = got_entries_needed (*lgot_masks); | |
d6e14abc AM |
6289 | if (need == 0) |
6290 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
6291 | else |
6292 | { | |
3b36f7e6 | 6293 | *local_got = allocate_got (htab, need); |
0e1862bb | 6294 | if (bfd_link_pic (info)) |
0bed072f | 6295 | { |
f15d0b54 AM |
6296 | asection *srel; |
6297 | bfd_boolean tprel_known = bfd_link_executable (info); | |
6298 | ||
6299 | need = got_relocs_needed (*lgot_masks, need, tprel_known); | |
6300 | srel = htab->elf.srelgot; | |
0bed072f | 6301 | if ((*lgot_masks & PLT_IFUNC) != 0) |
ce558b89 | 6302 | srel = htab->elf.irelplt; |
f15d0b54 | 6303 | srel->size += need; |
0bed072f | 6304 | } |
25dbc73a AM |
6305 | } |
6306 | } | |
6307 | else | |
6308 | *local_got = (bfd_vma) -1; | |
e054468f AM |
6309 | |
6310 | if (htab->is_vxworks) | |
6311 | continue; | |
6312 | ||
6313 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
6314 | for (; local_plt < end_local_plt; ++local_plt) | |
6315 | { | |
6316 | struct plt_entry *ent; | |
6317 | bfd_boolean doneone = FALSE; | |
6318 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6319 | ||
6320 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
6321 | if (ent->plt.refcount > 0) | |
6322 | { | |
ce558b89 | 6323 | s = htab->elf.iplt; |
e054468f AM |
6324 | |
6325 | if (!doneone) | |
6326 | { | |
6327 | plt_offset = s->size; | |
6328 | s->size += 4; | |
6329 | } | |
6330 | ent->plt.offset = plt_offset; | |
6331 | ||
6332 | s = htab->glink; | |
0e1862bb | 6333 | if (!doneone || bfd_link_pic (info)) |
e054468f AM |
6334 | { |
6335 | glink_offset = s->size; | |
6336 | s->size += GLINK_ENTRY_SIZE; | |
6337 | } | |
6338 | ent->glink_offset = glink_offset; | |
6339 | ||
6340 | if (!doneone) | |
6341 | { | |
ce558b89 | 6342 | htab->elf.irelplt->size += sizeof (Elf32_External_Rela); |
e054468f AM |
6343 | doneone = TRUE; |
6344 | } | |
6345 | } | |
6346 | else | |
6347 | ent->plt.offset = (bfd_vma) -1; | |
6348 | } | |
25dbc73a | 6349 | } |
252b5132 | 6350 | |
b7fcf6f6 AM |
6351 | /* Allocate space for global sym dynamic relocs. */ |
6352 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
6353 | ||
3b36f7e6 AM |
6354 | if (htab->tlsld_got.refcount > 0) |
6355 | { | |
6356 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
0e1862bb | 6357 | if (bfd_link_pic (info)) |
ce558b89 | 6358 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3b36f7e6 AM |
6359 | } |
6360 | else | |
6361 | htab->tlsld_got.offset = (bfd_vma) -1; | |
6362 | ||
ce558b89 | 6363 | if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
6364 | { |
6365 | unsigned int g_o_t = 32768; | |
6366 | ||
4d962050 AM |
6367 | /* If we haven't allocated the header, do so now. When we get here, |
6368 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
6369 | or 32780 to 65536 (header allocated). For new plt/got, the | |
6370 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
ce558b89 | 6371 | if (htab->elf.sgot->size <= 32768) |
3b36f7e6 | 6372 | { |
ce558b89 | 6373 | g_o_t = htab->elf.sgot->size; |
4a3dc543 | 6374 | if (htab->plt_type == PLT_OLD) |
4d962050 | 6375 | g_o_t += 4; |
ce558b89 | 6376 | htab->elf.sgot->size += htab->got_header_size; |
3b36f7e6 | 6377 | } |
3b36f7e6 AM |
6378 | |
6379 | htab->elf.hgot->root.u.def.value = g_o_t; | |
6380 | } | |
0e1862bb | 6381 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
6382 | { |
6383 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
6384 | |
6385 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
6386 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 6387 | } |
15bfcc77 AM |
6388 | if (info->emitrelocations) |
6389 | { | |
6390 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
6391 | ||
6392 | if (sda != NULL && sda->ref_regular) | |
6393 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6394 | sda = htab->sdata[1].sym; | |
6395 | if (sda != NULL && sda->ref_regular) | |
6396 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6397 | } | |
3b36f7e6 | 6398 | |
e054468f AM |
6399 | if (htab->glink != NULL |
6400 | && htab->glink->size != 0 | |
6401 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
6402 | { |
6403 | htab->glink_pltresolve = htab->glink->size; | |
888a7fc3 AM |
6404 | /* Space for the branch table. ??? We don't need entries for |
6405 | non-dynamic symbols in this table. This case can arise with | |
6406 | static ifuncs or forced local ifuncs. */ | |
86b9da88 AM |
6407 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; |
6408 | /* Pad out to align the start of PLTresolve. */ | |
5446cbdf AM |
6409 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
6410 | ? 63 : 15); | |
d7128ce4 | 6411 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 6412 | |
5446cbdf | 6413 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
6414 | { |
6415 | struct elf_link_hash_entry *sh; | |
6416 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
6417 | TRUE, FALSE, FALSE); | |
6418 | if (sh == NULL) | |
6419 | return FALSE; | |
6420 | if (sh->root.type == bfd_link_hash_new) | |
6421 | { | |
6422 | sh->root.type = bfd_link_hash_defined; | |
6423 | sh->root.u.def.section = htab->glink; | |
6424 | sh->root.u.def.value = htab->glink_pltresolve; | |
6425 | sh->ref_regular = 1; | |
6426 | sh->def_regular = 1; | |
6427 | sh->ref_regular_nonweak = 1; | |
6428 | sh->forced_local = 1; | |
6429 | sh->non_elf = 0; | |
2ec55de3 | 6430 | sh->root.linker_def = 1; |
0ba07910 AM |
6431 | } |
6432 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
6433 | TRUE, FALSE, FALSE); | |
6434 | if (sh == NULL) | |
6435 | return FALSE; | |
6436 | if (sh->root.type == bfd_link_hash_new) | |
6437 | { | |
6438 | sh->root.type = bfd_link_hash_defined; | |
6439 | sh->root.u.def.section = htab->glink; | |
6440 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
6441 | sh->ref_regular = 1; | |
6442 | sh->def_regular = 1; | |
6443 | sh->ref_regular_nonweak = 1; | |
6444 | sh->forced_local = 1; | |
6445 | sh->non_elf = 0; | |
2ec55de3 | 6446 | sh->root.linker_def = 1; |
0ba07910 AM |
6447 | } |
6448 | } | |
d7128ce4 AM |
6449 | } |
6450 | ||
6177242a AM |
6451 | if (htab->glink != NULL |
6452 | && htab->glink->size != 0 | |
6453 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
6454 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
6455 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
6456 | { |
6457 | s = htab->glink_eh_frame; | |
6458 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 6459 | if (bfd_link_pic (info)) |
6177242a AM |
6460 | { |
6461 | s->size += 4; | |
6462 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
6463 | s->size += 4; | |
6464 | } | |
6465 | } | |
6466 | ||
25dbc73a AM |
6467 | /* We've now determined the sizes of the various dynamic sections. |
6468 | Allocate memory for them. */ | |
6469 | relocs = FALSE; | |
6470 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 6471 | { |
9d8504b1 PB |
6472 | bfd_boolean strip_section = TRUE; |
6473 | ||
25dbc73a AM |
6474 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
6475 | continue; | |
252b5132 | 6476 | |
ce558b89 AM |
6477 | if (s == htab->elf.splt |
6478 | || s == htab->elf.sgot) | |
25dbc73a | 6479 | { |
9d8504b1 PB |
6480 | /* We'd like to strip these sections if they aren't needed, but if |
6481 | we've exported dynamic symbols from them we must leave them. | |
6482 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 6483 | if (htab->elf.hplt != NULL) |
9d8504b1 | 6484 | strip_section = FALSE; |
25dbc73a AM |
6485 | /* Strip this section if we don't need it; see the |
6486 | comment below. */ | |
6487 | } | |
ce558b89 | 6488 | else if (s == htab->elf.iplt |
e054468f | 6489 | || s == htab->glink |
6177242a | 6490 | || s == htab->glink_eh_frame |
ce558b89 | 6491 | || s == htab->elf.sgotplt |
e054468f | 6492 | || s == htab->sbss |
9d19e4fd | 6493 | || s == htab->elf.sdynbss |
5474d94f | 6494 | || s == htab->elf.sdynrelro |
15bfcc77 | 6495 | || s == htab->dynsbss) |
25dbc73a | 6496 | { |
c9a2f333 | 6497 | /* Strip these too. */ |
25dbc73a | 6498 | } |
15bfcc77 AM |
6499 | else if (s == htab->sdata[0].section |
6500 | || s == htab->sdata[1].section) | |
6501 | { | |
6502 | strip_section = (s->flags & SEC_KEEP) == 0; | |
6503 | } | |
a0f49396 NC |
6504 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
6505 | ".rela")) | |
25dbc73a | 6506 | { |
c456f082 | 6507 | if (s->size != 0) |
25dbc73a AM |
6508 | { |
6509 | /* Remember whether there are any relocation sections. */ | |
6510 | relocs = TRUE; | |
252b5132 | 6511 | |
25dbc73a AM |
6512 | /* We use the reloc_count field as a counter if we need |
6513 | to copy relocs into the output file. */ | |
6514 | s->reloc_count = 0; | |
252b5132 RH |
6515 | } |
6516 | } | |
25dbc73a AM |
6517 | else |
6518 | { | |
6519 | /* It's not one of our sections, so don't allocate space. */ | |
6520 | continue; | |
6521 | } | |
252b5132 | 6522 | |
9d8504b1 | 6523 | if (s->size == 0 && strip_section) |
25dbc73a | 6524 | { |
c456f082 AM |
6525 | /* If we don't need this section, strip it from the |
6526 | output file. This is mostly to handle .rela.bss and | |
6527 | .rela.plt. We must create both sections in | |
6528 | create_dynamic_sections, because they must be created | |
6529 | before the linker maps input sections to output | |
6530 | sections. The linker does that before | |
6531 | adjust_dynamic_symbol is called, and it is that | |
6532 | function which decides whether anything needs to go | |
6533 | into these sections. */ | |
8423293d | 6534 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
6535 | continue; |
6536 | } | |
7fce784e | 6537 | |
d7128ce4 | 6538 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
6539 | continue; |
6540 | ||
25dbc73a AM |
6541 | /* Allocate memory for the section contents. */ |
6542 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
6543 | if (s->contents == NULL) | |
6544 | return FALSE; | |
6545 | } | |
252b5132 | 6546 | |
25dbc73a | 6547 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 6548 | { |
25dbc73a AM |
6549 | /* Add some entries to the .dynamic section. We fill in the |
6550 | values later, in ppc_elf_finish_dynamic_sections, but we | |
6551 | must add the entries now so that we get the correct size for | |
6552 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6553 | dynamic linker and used by the debugger. */ | |
6554 | #define add_dynamic_entry(TAG, VAL) \ | |
6555 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 6556 | |
0e1862bb | 6557 | if (bfd_link_executable (info)) |
7619e7c7 | 6558 | { |
25dbc73a AM |
6559 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
6560 | return FALSE; | |
7619e7c7 AM |
6561 | } |
6562 | ||
ce558b89 | 6563 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
7619e7c7 | 6564 | { |
25dbc73a AM |
6565 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6566 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6567 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
6568 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
6569 | return FALSE; | |
6570 | } | |
7619e7c7 | 6571 | |
c7e17e05 AM |
6572 | if (htab->plt_type == PLT_NEW |
6573 | && htab->glink != NULL | |
6574 | && htab->glink->size != 0) | |
d7128ce4 | 6575 | { |
1fe44d79 | 6576 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 6577 | return FALSE; |
5446cbdf | 6578 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
6579 | && htab->tls_get_addr != NULL |
6580 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 6581 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 6582 | return FALSE; |
d7128ce4 AM |
6583 | } |
6584 | ||
25dbc73a AM |
6585 | if (relocs) |
6586 | { | |
6587 | if (!add_dynamic_entry (DT_RELA, 0) | |
6588 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6589 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
6590 | return FALSE; | |
6591 | } | |
7619e7c7 | 6592 | |
25dbc73a AM |
6593 | /* If any dynamic relocs apply to a read-only section, then we |
6594 | need a DT_TEXTREL entry. */ | |
6595 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 6596 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 6597 | info); |
7619e7c7 | 6598 | |
25dbc73a AM |
6599 | if ((info->flags & DF_TEXTREL) != 0) |
6600 | { | |
6601 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
6602 | return FALSE; | |
7619e7c7 | 6603 | } |
7a2b07ff NS |
6604 | if (htab->is_vxworks |
6605 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
6606 | return FALSE; | |
6607 | } | |
25dbc73a AM |
6608 | #undef add_dynamic_entry |
6609 | ||
7e01508c AM |
6610 | if (htab->glink_eh_frame != NULL |
6611 | && htab->glink_eh_frame->contents != NULL) | |
6612 | { | |
6613 | unsigned char *p = htab->glink_eh_frame->contents; | |
6614 | bfd_vma val; | |
6615 | ||
6616 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
6617 | /* CIE length (rewrite in case little-endian). */ | |
6618 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
6619 | p += sizeof (glink_eh_frame_cie); | |
6620 | /* FDE length. */ | |
6621 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
6622 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6623 | p += 4; | |
6624 | /* CIE pointer. */ | |
6625 | val = p - htab->glink_eh_frame->contents; | |
6626 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6627 | p += 4; | |
6628 | /* Offset to .glink. Set later. */ | |
6629 | p += 4; | |
6630 | /* .glink size. */ | |
6631 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
6632 | p += 4; | |
6633 | /* Augmentation. */ | |
6634 | p += 1; | |
6635 | ||
0e1862bb | 6636 | if (bfd_link_pic (info) |
7e01508c AM |
6637 | && htab->elf.dynamic_sections_created) |
6638 | { | |
6639 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
6640 | if (adv < 64) | |
6641 | *p++ = DW_CFA_advance_loc + adv; | |
6642 | else if (adv < 256) | |
6643 | { | |
6644 | *p++ = DW_CFA_advance_loc1; | |
6645 | *p++ = adv; | |
6646 | } | |
6647 | else if (adv < 65536) | |
6648 | { | |
6649 | *p++ = DW_CFA_advance_loc2; | |
6650 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
6651 | p += 2; | |
6652 | } | |
6653 | else | |
6654 | { | |
6655 | *p++ = DW_CFA_advance_loc4; | |
6656 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
6657 | p += 4; | |
6658 | } | |
6659 | *p++ = DW_CFA_register; | |
6660 | *p++ = 65; | |
6661 | p++; | |
6662 | *p++ = DW_CFA_advance_loc + 4; | |
6663 | *p++ = DW_CFA_restore_extended; | |
6664 | *p++ = 65; | |
6665 | } | |
6666 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
6667 | == htab->glink_eh_frame->size); | |
6668 | } | |
6669 | ||
7619e7c7 AM |
6670 | return TRUE; |
6671 | } | |
0eb4a168 | 6672 | |
93d1b056 AM |
6673 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
6674 | if it looks like nothing is using them. */ | |
6675 | ||
6676 | static void | |
6677 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
6678 | { | |
6679 | struct elf_link_hash_entry *sda = lsect->sym; | |
6680 | ||
6681 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
6682 | { | |
6683 | asection *s; | |
6684 | ||
6685 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6686 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6687 | { | |
6688 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6689 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6690 | { | |
6691 | sda->def_regular = 0; | |
6692 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6693 | sda->ref_dynamic = 1; | |
6694 | sda->forced_local = 0; | |
6695 | } | |
6696 | } | |
6697 | } | |
6698 | } | |
6699 | ||
6700 | void | |
6701 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6702 | { | |
6703 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6704 | ||
6705 | if (htab != NULL) | |
6706 | { | |
6707 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6708 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6709 | } | |
6710 | } | |
6711 | ||
6712 | ||
0eb4a168 AM |
6713 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6714 | ||
6715 | static bfd_boolean | |
6716 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6717 | { | |
6718 | if (h->plt.plist != NULL | |
6719 | && !h->def_regular | |
6720 | && (!h->pointer_equality_needed | |
6721 | || !h->ref_regular_nonweak)) | |
6722 | return FALSE; | |
6723 | ||
6724 | return _bfd_elf_hash_symbol (h); | |
6725 | } | |
25dbc73a AM |
6726 | \f |
6727 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6728 | ||
01017ef8 NS |
6729 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6730 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6731 | static const int shared_stub_entry[] = |
6732 | { | |
6733 | 0x7c0802a6, /* mflr 0 */ | |
6734 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6735 | 0x7d8802a6, /* mflr 12 */ |
6736 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6737 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6738 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6739 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6740 | 0x4e800420, /* bctr */ |
6741 | }; | |
6742 | ||
6743 | static const int stub_entry[] = | |
6744 | { | |
01017ef8 NS |
6745 | 0x3d800000, /* lis 12,xxx@ha */ |
6746 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6747 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6748 | 0x4e800420, /* bctr */ |
6749 | }; | |
6750 | ||
5446cbdf AM |
6751 | struct ppc_elf_relax_info |
6752 | { | |
6753 | unsigned int workaround_size; | |
d3e454b9 | 6754 | unsigned int picfixup_size; |
5446cbdf AM |
6755 | }; |
6756 | ||
6757 | /* This function implements long branch trampolines, and the ppc476 | |
6758 | icache bug workaround. Any section needing trampolines or patch | |
6759 | space for the workaround has its size extended so that we can | |
53291d1f | 6760 | add trampolines at the end of the section. */ |
5446cbdf | 6761 | |
25dbc73a AM |
6762 | static bfd_boolean |
6763 | ppc_elf_relax_section (bfd *abfd, | |
6764 | asection *isec, | |
6765 | struct bfd_link_info *link_info, | |
6766 | bfd_boolean *again) | |
6767 | { | |
d3e454b9 | 6768 | struct one_branch_fixup |
25dbc73a | 6769 | { |
d3e454b9 | 6770 | struct one_branch_fixup *next; |
25dbc73a | 6771 | asection *tsec; |
01017ef8 NS |
6772 | /* Final link, can use the symbol offset. For a |
6773 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6774 | bfd_vma toff; |
6775 | bfd_vma trampoff; | |
6776 | }; | |
7619e7c7 | 6777 | |
25dbc73a AM |
6778 | Elf_Internal_Shdr *symtab_hdr; |
6779 | bfd_byte *contents = NULL; | |
6780 | Elf_Internal_Sym *isymbuf = NULL; | |
6781 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6782 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 6783 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 6784 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6785 | unsigned changes = 0; |
5446cbdf | 6786 | bfd_boolean workaround_change; |
d7128ce4 | 6787 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 6788 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 6789 | asection *got2; |
50248c89 | 6790 | bfd_boolean maybe_pasted; |
7619e7c7 | 6791 | |
25dbc73a | 6792 | *again = FALSE; |
7619e7c7 | 6793 | |
5446cbdf | 6794 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6795 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6796 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6797 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6798 | || isec->size < 4) | |
25dbc73a | 6799 | return TRUE; |
7619e7c7 | 6800 | |
c8a1f254 NS |
6801 | /* We cannot represent the required PIC relocs in the output, so don't |
6802 | do anything. The linker doesn't support mixing -shared and -r | |
6803 | anyway. */ | |
0e1862bb | 6804 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 6805 | return TRUE; |
5b914448 | 6806 | |
5446cbdf AM |
6807 | htab = ppc_elf_hash_table (link_info); |
6808 | if (htab == NULL) | |
6809 | return TRUE; | |
6810 | ||
6811 | isec->size = (isec->size + 3) & -4; | |
6812 | if (isec->rawsize == 0) | |
6813 | isec->rawsize = isec->size; | |
6814 | trampbase = isec->size; | |
6815 | ||
53291d1f AM |
6816 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6817 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6818 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6819 | ||
d3e454b9 AM |
6820 | if (htab->params->ppc476_workaround |
6821 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
6822 | { |
6823 | if (elf_section_data (isec)->sec_info == NULL) | |
6824 | { | |
5446cbdf AM |
6825 | elf_section_data (isec)->sec_info |
6826 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6827 | if (elf_section_data (isec)->sec_info == NULL) | |
6828 | return FALSE; | |
6829 | } | |
6830 | relax_info = elf_section_data (isec)->sec_info; | |
6831 | trampbase -= relax_info->workaround_size; | |
6832 | } | |
6833 | ||
50248c89 AM |
6834 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6835 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6836 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6837 | trampoff = trampbase; |
6838 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6839 | trampoff += 4; |
7619e7c7 | 6840 | |
0ffa91dd | 6841 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
6842 | picfixup_size = 0; |
6843 | if (htab->params->branch_trampolines | |
6844 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 6845 | { |
5446cbdf AM |
6846 | /* Get a copy of the native relocations. */ |
6847 | if (isec->reloc_count != 0) | |
25dbc73a | 6848 | { |
5446cbdf AM |
6849 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6850 | link_info->keep_memory); | |
6851 | if (internal_relocs == NULL) | |
6852 | goto error_return; | |
25dbc73a | 6853 | } |
7619e7c7 | 6854 | |
5446cbdf AM |
6855 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6856 | ||
6857 | irelend = internal_relocs + isec->reloc_count; | |
6858 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6859 | { |
5446cbdf AM |
6860 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6861 | bfd_vma toff, roff; | |
6862 | asection *tsec; | |
d3e454b9 | 6863 | struct one_branch_fixup *f; |
5446cbdf | 6864 | size_t insn_offset = 0; |
d3e454b9 | 6865 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
6866 | bfd_byte *hit_addr; |
6867 | unsigned long t0; | |
6868 | struct elf_link_hash_entry *h; | |
6869 | struct plt_entry **plist; | |
6870 | unsigned char sym_type; | |
6871 | ||
6872 | switch (r_type) | |
6873 | { | |
6874 | case R_PPC_REL24: | |
6875 | case R_PPC_LOCAL24PC: | |
6876 | case R_PPC_PLTREL24: | |
6877 | max_branch_offset = 1 << 25; | |
6878 | break; | |
6879 | ||
6880 | case R_PPC_REL14: | |
6881 | case R_PPC_REL14_BRTAKEN: | |
6882 | case R_PPC_REL14_BRNTAKEN: | |
6883 | max_branch_offset = 1 << 15; | |
6884 | break; | |
7fce784e | 6885 | |
d3e454b9 AM |
6886 | case R_PPC_ADDR16_HA: |
6887 | if (htab->params->pic_fixup > 0) | |
6888 | break; | |
6889 | continue; | |
6890 | ||
5446cbdf AM |
6891 | default: |
6892 | continue; | |
6893 | } | |
6894 | ||
6895 | /* Get the value of the symbol referred to by the reloc. */ | |
6896 | h = NULL; | |
6897 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
25dbc73a | 6898 | { |
5446cbdf AM |
6899 | /* A local symbol. */ |
6900 | Elf_Internal_Sym *isym; | |
6901 | ||
6902 | /* Read this BFD's local symbols. */ | |
25dbc73a | 6903 | if (isymbuf == NULL) |
5446cbdf AM |
6904 | { |
6905 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6906 | if (isymbuf == NULL) | |
6907 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
6908 | symtab_hdr->sh_info, 0, | |
6909 | NULL, NULL, NULL); | |
6910 | if (isymbuf == 0) | |
6911 | goto error_return; | |
6912 | } | |
6913 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6914 | if (isym->st_shndx == SHN_UNDEF) | |
6915 | tsec = bfd_und_section_ptr; | |
6916 | else if (isym->st_shndx == SHN_ABS) | |
6917 | tsec = bfd_abs_section_ptr; | |
6918 | else if (isym->st_shndx == SHN_COMMON) | |
6919 | tsec = bfd_com_section_ptr; | |
6920 | else | |
6921 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6922 | ||
6923 | toff = isym->st_value; | |
6924 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6925 | } |
25dbc73a | 6926 | else |
5446cbdf AM |
6927 | { |
6928 | /* Global symbol handling. */ | |
6929 | unsigned long indx; | |
7fce784e | 6930 | |
5446cbdf AM |
6931 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
6932 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 6933 | |
5446cbdf AM |
6934 | while (h->root.type == bfd_link_hash_indirect |
6935 | || h->root.type == bfd_link_hash_warning) | |
6936 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 6937 | |
5446cbdf AM |
6938 | if (h->root.type == bfd_link_hash_defined |
6939 | || h->root.type == bfd_link_hash_defweak) | |
6940 | { | |
6941 | tsec = h->root.u.def.section; | |
6942 | toff = h->root.u.def.value; | |
6943 | } | |
6944 | else if (h->root.type == bfd_link_hash_undefined | |
6945 | || h->root.type == bfd_link_hash_undefweak) | |
6946 | { | |
6947 | tsec = bfd_und_section_ptr; | |
0e1862bb | 6948 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
6949 | } |
6950 | else | |
6951 | continue; | |
6952 | ||
9f7552cf AM |
6953 | /* If this branch is to __tls_get_addr then we may later |
6954 | optimise away the call. We won't be needing a long- | |
6955 | branch stub in that case. */ | |
0e1862bb | 6956 | if (bfd_link_executable (link_info) |
9f7552cf AM |
6957 | && h == htab->tls_get_addr |
6958 | && irel != internal_relocs) | |
6959 | { | |
6960 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6961 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6962 | unsigned int tls_mask = 0; | |
6963 | ||
6964 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6965 | R_PPC_TLSLD, or for older object files, a reloc | |
6966 | on the __tls_get_addr arg setup insn. Get tls | |
6967 | mask bits from the symbol on that reloc. */ | |
6968 | if (t_symndx < symtab_hdr->sh_info) | |
6969 | { | |
6970 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6971 | ||
6972 | if (local_got_offsets != NULL) | |
6973 | { | |
6974 | struct plt_entry **local_plt = (struct plt_entry **) | |
6975 | (local_got_offsets + symtab_hdr->sh_info); | |
6976 | char *lgot_masks = (char *) | |
6977 | (local_plt + symtab_hdr->sh_info); | |
6978 | tls_mask = lgot_masks[t_symndx]; | |
6979 | } | |
6980 | } | |
6981 | else | |
6982 | { | |
6983 | struct elf_link_hash_entry *th | |
6984 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
6985 | ||
6986 | while (th->root.type == bfd_link_hash_indirect | |
6987 | || th->root.type == bfd_link_hash_warning) | |
6988 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
6989 | ||
6990 | tls_mask | |
6991 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
6992 | } | |
6993 | ||
6994 | /* The mask bits tell us if the call will be | |
6995 | optimised away. */ | |
6996 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
6997 | && (t_rtype == R_PPC_TLSGD | |
6998 | || t_rtype == R_PPC_GOT_TLSGD16 | |
6999 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
7000 | continue; | |
7001 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
7002 | && (t_rtype == R_PPC_TLSLD | |
7003 | || t_rtype == R_PPC_GOT_TLSLD16 | |
7004 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
7005 | continue; | |
7006 | } | |
7007 | ||
5446cbdf AM |
7008 | sym_type = h->type; |
7009 | } | |
7619e7c7 | 7010 | |
d3e454b9 AM |
7011 | if (r_type == R_PPC_ADDR16_HA) |
7012 | { | |
7013 | if (h != NULL | |
7014 | && !h->def_regular | |
7015 | && h->protected_def | |
7016 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7017 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
7018 | picfixup_size += 12; | |
7019 | continue; | |
7020 | } | |
7021 | ||
5446cbdf AM |
7022 | /* The condition here under which we call find_plt_ent must |
7023 | match that in relocate_section. If we call find_plt_ent here | |
7024 | but not in relocate_section, or vice versa, then the branch | |
7025 | destination used here may be incorrect. */ | |
7026 | plist = NULL; | |
7027 | if (h != NULL) | |
25dbc73a | 7028 | { |
5446cbdf AM |
7029 | /* We know is_branch_reloc (r_type) is true. */ |
7030 | if (h->type == STT_GNU_IFUNC | |
7031 | || r_type == R_PPC_PLTREL24) | |
7032 | plist = &h->plt.plist; | |
25dbc73a | 7033 | } |
5446cbdf AM |
7034 | else if (sym_type == STT_GNU_IFUNC |
7035 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 7036 | { |
5446cbdf AM |
7037 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
7038 | struct plt_entry **local_plt = (struct plt_entry **) | |
7039 | (local_got_offsets + symtab_hdr->sh_info); | |
7040 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 7041 | } |
5446cbdf | 7042 | if (plist != NULL) |
a9585d22 | 7043 | { |
5446cbdf AM |
7044 | bfd_vma addend = 0; |
7045 | struct plt_entry *ent; | |
7046 | ||
0e1862bb | 7047 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
7048 | addend = irel->r_addend; |
7049 | ent = find_plt_ent (plist, got2, addend); | |
7050 | if (ent != NULL) | |
a9585d22 | 7051 | { |
5446cbdf AM |
7052 | if (htab->plt_type == PLT_NEW |
7053 | || h == NULL | |
7054 | || !htab->elf.dynamic_sections_created | |
7055 | || h->dynindx == -1) | |
7056 | { | |
7057 | tsec = htab->glink; | |
7058 | toff = ent->glink_offset; | |
7059 | } | |
7060 | else | |
7061 | { | |
ce558b89 | 7062 | tsec = htab->elf.splt; |
5446cbdf AM |
7063 | toff = ent->plt.offset; |
7064 | } | |
de972ffa AM |
7065 | } |
7066 | } | |
de972ffa | 7067 | |
5446cbdf AM |
7068 | /* If the branch and target are in the same section, you have |
7069 | no hope of adding stubs. We'll error out later should the | |
7070 | branch overflow. */ | |
7071 | if (tsec == isec) | |
7072 | continue; | |
25dbc73a | 7073 | |
5446cbdf AM |
7074 | /* There probably isn't any reason to handle symbols in |
7075 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
7076 | attribute for a code section, and we are only looking at | |
7077 | branches. However, implement it correctly here as a | |
7078 | reference for other target relax_section functions. */ | |
7079 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7080 | { | |
7081 | /* At this stage in linking, no SEC_MERGE symbol has been | |
7082 | adjusted, so all references to such symbols need to be | |
7083 | passed through _bfd_merged_section_offset. (Later, in | |
7084 | relocate_section, all SEC_MERGE symbols *except* for | |
7085 | section symbols have been adjusted.) | |
7086 | ||
7087 | gas may reduce relocations against symbols in SEC_MERGE | |
7088 | sections to a relocation against the section symbol when | |
7089 | the original addend was zero. When the reloc is against | |
7090 | a section symbol we should include the addend in the | |
7091 | offset passed to _bfd_merged_section_offset, since the | |
7092 | location of interest is the original symbol. On the | |
7093 | other hand, an access to "sym+addend" where "sym" is not | |
7094 | a section symbol should not include the addend; Such an | |
7095 | access is presumed to be an offset from "sym"; The | |
7096 | location of interest is just "sym". */ | |
7097 | if (sym_type == STT_SECTION) | |
7098 | toff += irel->r_addend; | |
7099 | ||
7100 | toff | |
7101 | = _bfd_merged_section_offset (abfd, &tsec, | |
7102 | elf_section_data (tsec)->sec_info, | |
7103 | toff); | |
7104 | ||
7105 | if (sym_type != STT_SECTION) | |
7106 | toff += irel->r_addend; | |
7107 | } | |
7108 | /* PLTREL24 addends are special. */ | |
7109 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 7110 | toff += irel->r_addend; |
7619e7c7 | 7111 | |
5446cbdf | 7112 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 7113 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
7114 | && tsec == bfd_und_section_ptr) |
7115 | || tsec->output_section == NULL | |
7116 | || (tsec->owner != NULL | |
7117 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
7118 | continue; | |
7619e7c7 | 7119 | |
5446cbdf | 7120 | roff = irel->r_offset; |
7de713b9 | 7121 | |
5446cbdf AM |
7122 | /* If the branch is in range, no need to do anything. */ |
7123 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 7124 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
7125 | /* A relocatable link may have sections moved during |
7126 | final link, so do not presume they remain in range. */ | |
7127 | || tsec->output_section == isec->output_section)) | |
7128 | { | |
7129 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 7130 | |
5446cbdf AM |
7131 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7132 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7133 | if (symaddr - reladdr + max_branch_offset | |
7134 | < 2 * max_branch_offset) | |
7135 | continue; | |
7136 | } | |
01017ef8 | 7137 | |
5446cbdf | 7138 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 7139 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
7140 | if (f->tsec == tsec && f->toff == toff) |
7141 | break; | |
252b5132 | 7142 | |
5446cbdf AM |
7143 | if (f == NULL) |
7144 | { | |
7145 | size_t size; | |
7146 | unsigned long stub_rtype; | |
25dbc73a | 7147 | |
5446cbdf AM |
7148 | val = trampoff - roff; |
7149 | if (val >= max_branch_offset) | |
7150 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
7151 | one. We'll report an error later. */ | |
7152 | continue; | |
252b5132 | 7153 | |
0e1862bb | 7154 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
7155 | { |
7156 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
7157 | insn_offset = 12; | |
7158 | } | |
7159 | else | |
7160 | { | |
7161 | size = 4 * ARRAY_SIZE (stub_entry); | |
7162 | insn_offset = 0; | |
7163 | } | |
7164 | stub_rtype = R_PPC_RELAX; | |
ce558b89 | 7165 | if (tsec == htab->elf.splt |
5446cbdf AM |
7166 | || tsec == htab->glink) |
7167 | { | |
7168 | stub_rtype = R_PPC_RELAX_PLT; | |
7169 | if (r_type == R_PPC_PLTREL24) | |
7170 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
7171 | } | |
252b5132 | 7172 | |
5446cbdf AM |
7173 | /* Hijack the old relocation. Since we need two |
7174 | relocations for this use a "composite" reloc. */ | |
7175 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
7176 | stub_rtype); | |
7177 | irel->r_offset = trampoff + insn_offset; | |
7178 | if (r_type == R_PPC_PLTREL24 | |
7179 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
7180 | irel->r_addend = 0; | |
7181 | ||
7182 | /* Record the fixup so we don't do it again this section. */ | |
7183 | f = bfd_malloc (sizeof (*f)); | |
d3e454b9 | 7184 | f->next = branch_fixups; |
5446cbdf AM |
7185 | f->tsec = tsec; |
7186 | f->toff = toff; | |
7187 | f->trampoff = trampoff; | |
d3e454b9 | 7188 | branch_fixups = f; |
5446cbdf AM |
7189 | |
7190 | trampoff += size; | |
7191 | changes++; | |
25dbc73a AM |
7192 | } |
7193 | else | |
7194 | { | |
5446cbdf AM |
7195 | val = f->trampoff - roff; |
7196 | if (val >= max_branch_offset) | |
7197 | continue; | |
252b5132 | 7198 | |
5446cbdf AM |
7199 | /* Nop out the reloc, since we're finalizing things here. */ |
7200 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7201 | } | |
252b5132 | 7202 | |
5446cbdf AM |
7203 | /* Get the section contents. */ |
7204 | if (contents == NULL) | |
25dbc73a | 7205 | { |
5446cbdf AM |
7206 | /* Get cached copy if it exists. */ |
7207 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
7208 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 7209 | /* Go get them off disk. */ |
5446cbdf | 7210 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
7211 | goto error_return; |
7212 | } | |
252b5132 | 7213 | |
5446cbdf AM |
7214 | /* Fix up the existing branch to hit the trampoline. */ |
7215 | hit_addr = contents + roff; | |
7216 | switch (r_type) | |
7217 | { | |
7218 | case R_PPC_REL24: | |
7219 | case R_PPC_LOCAL24PC: | |
7220 | case R_PPC_PLTREL24: | |
7221 | t0 = bfd_get_32 (abfd, hit_addr); | |
7222 | t0 &= ~0x3fffffc; | |
7223 | t0 |= val & 0x3fffffc; | |
7224 | bfd_put_32 (abfd, t0, hit_addr); | |
7225 | break; | |
252b5132 | 7226 | |
5446cbdf AM |
7227 | case R_PPC_REL14: |
7228 | case R_PPC_REL14_BRTAKEN: | |
7229 | case R_PPC_REL14_BRNTAKEN: | |
7230 | t0 = bfd_get_32 (abfd, hit_addr); | |
7231 | t0 &= ~0xfffc; | |
7232 | t0 |= val & 0xfffc; | |
7233 | bfd_put_32 (abfd, t0, hit_addr); | |
7234 | break; | |
7235 | } | |
25dbc73a | 7236 | } |
252b5132 | 7237 | |
d3e454b9 | 7238 | while (branch_fixups != NULL) |
25dbc73a | 7239 | { |
d3e454b9 AM |
7240 | struct one_branch_fixup *f = branch_fixups; |
7241 | branch_fixups = branch_fixups->next; | |
25dbc73a AM |
7242 | free (f); |
7243 | } | |
5446cbdf | 7244 | } |
252b5132 | 7245 | |
5446cbdf AM |
7246 | workaround_change = FALSE; |
7247 | newsize = trampoff; | |
795bc6b3 | 7248 | if (htab->params->ppc476_workaround |
0e1862bb | 7249 | && (!bfd_link_relocatable (link_info) |
795bc6b3 | 7250 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) |
5446cbdf AM |
7251 | { |
7252 | bfd_vma addr, end_addr; | |
7253 | unsigned int crossings; | |
795bc6b3 | 7254 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
7255 | |
7256 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 7257 | end_addr = addr + trampoff; |
5446cbdf | 7258 | addr &= -pagesize; |
795bc6b3 | 7259 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
7260 | if (crossings != 0) |
7261 | { | |
7262 | /* Keep space aligned, to ensure the patch code itself does | |
7263 | not cross a page. Don't decrease size calculated on a | |
7264 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 7265 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
7266 | newsize += crossings * 16; |
7267 | if (relax_info->workaround_size < newsize) | |
7268 | { | |
7269 | relax_info->workaround_size = newsize; | |
7270 | workaround_change = TRUE; | |
5446cbdf AM |
7271 | } |
7272 | /* Ensure relocate_section is called. */ | |
7273 | isec->flags |= SEC_RELOC; | |
7274 | } | |
7275 | newsize = trampoff + relax_info->workaround_size; | |
7276 | } | |
7277 | ||
d3e454b9 AM |
7278 | if (htab->params->pic_fixup > 0) |
7279 | { | |
7280 | picfixup_size -= relax_info->picfixup_size; | |
7281 | if (picfixup_size != 0) | |
7282 | relax_info->picfixup_size += picfixup_size; | |
7283 | newsize += relax_info->picfixup_size; | |
7284 | } | |
7285 | ||
7286 | if (changes != 0 || picfixup_size != 0 || workaround_change) | |
5446cbdf AM |
7287 | isec->size = newsize; |
7288 | ||
25dbc73a AM |
7289 | if (isymbuf != NULL |
7290 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 7291 | { |
25dbc73a AM |
7292 | if (! link_info->keep_memory) |
7293 | free (isymbuf); | |
252b5132 | 7294 | else |
25dbc73a AM |
7295 | { |
7296 | /* Cache the symbols for elf_link_input_bfd. */ | |
7297 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
7298 | } | |
252b5132 RH |
7299 | } |
7300 | ||
25dbc73a AM |
7301 | if (contents != NULL |
7302 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7303 | { | |
53291d1f | 7304 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
7305 | free (contents); |
7306 | else | |
7307 | { | |
7308 | /* Cache the section contents for elf_link_input_bfd. */ | |
7309 | elf_section_data (isec)->this_hdr.contents = contents; | |
7310 | } | |
7311 | } | |
252b5132 | 7312 | |
d3e454b9 | 7313 | changes += picfixup_size; |
9bc4e62b | 7314 | if (changes != 0) |
25dbc73a | 7315 | { |
9bc4e62b NS |
7316 | /* Append sufficient NOP relocs so we can write out relocation |
7317 | information for the trampolines. */ | |
d4730f92 | 7318 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
7319 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
7320 | * sizeof (*new_relocs)); | |
7321 | unsigned ix; | |
5b914448 | 7322 | |
9bc4e62b NS |
7323 | if (!new_relocs) |
7324 | goto error_return; | |
7325 | memcpy (new_relocs, internal_relocs, | |
7326 | isec->reloc_count * sizeof (*new_relocs)); | |
7327 | for (ix = changes; ix--;) | |
7328 | { | |
7329 | irel = new_relocs + ix + isec->reloc_count; | |
7330 | ||
7331 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7332 | } | |
7333 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 7334 | free (internal_relocs); |
9bc4e62b NS |
7335 | elf_section_data (isec)->relocs = new_relocs; |
7336 | isec->reloc_count += changes; | |
d4730f92 BS |
7337 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
7338 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 7339 | } |
5446cbdf AM |
7340 | else if (internal_relocs != NULL |
7341 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 7342 | free (internal_relocs); |
252b5132 | 7343 | |
5446cbdf | 7344 | *again = changes != 0 || workaround_change; |
b34976b6 | 7345 | return TRUE; |
25dbc73a AM |
7346 | |
7347 | error_return: | |
d3e454b9 | 7348 | while (branch_fixups != NULL) |
5446cbdf | 7349 | { |
d3e454b9 AM |
7350 | struct one_branch_fixup *f = branch_fixups; |
7351 | branch_fixups = branch_fixups->next; | |
5446cbdf AM |
7352 | free (f); |
7353 | } | |
25dbc73a AM |
7354 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
7355 | free (isymbuf); | |
7356 | if (contents != NULL | |
7357 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7358 | free (contents); | |
7359 | if (internal_relocs != NULL | |
7360 | && elf_section_data (isec)->relocs != internal_relocs) | |
7361 | free (internal_relocs); | |
7362 | return FALSE; | |
252b5132 | 7363 | } |
252b5132 | 7364 | \f |
8a696751 AM |
7365 | /* What to do when ld finds relocations against symbols defined in |
7366 | discarded sections. */ | |
7367 | ||
7368 | static unsigned int | |
7369 | ppc_elf_action_discarded (asection *sec) | |
7370 | { | |
7371 | if (strcmp (".fixup", sec->name) == 0) | |
7372 | return 0; | |
7373 | ||
7374 | if (strcmp (".got2", sec->name) == 0) | |
7375 | return 0; | |
7376 | ||
7377 | return _bfd_elf_default_action_discarded (sec); | |
7378 | } | |
c9a2f333 | 7379 | \f |
25dbc73a | 7380 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 7381 | |
25dbc73a | 7382 | static bfd_vma |
76750a2f | 7383 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
7384 | elf_linker_section_t *lsect, |
7385 | struct elf_link_hash_entry *h, | |
7386 | bfd_vma relocation, | |
2bb04cf2 | 7387 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
7388 | { |
7389 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 7390 | |
25dbc73a | 7391 | BFD_ASSERT (lsect != NULL); |
252b5132 | 7392 | |
25dbc73a | 7393 | if (h != NULL) |
252b5132 | 7394 | { |
25dbc73a AM |
7395 | /* Handle global symbol. */ |
7396 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 7397 | |
25dbc73a | 7398 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
7399 | BFD_ASSERT (eh->elf.def_regular); |
7400 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
7401 | } |
7402 | else | |
7403 | { | |
7404 | /* Handle local symbol. */ | |
7405 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 7406 | |
0c8d6e5c | 7407 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 7408 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
7409 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
7410 | } | |
252b5132 | 7411 | |
76750a2f AM |
7412 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
7413 | rel->r_addend, | |
7414 | lsect); | |
7415 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 7416 | |
76750a2f AM |
7417 | /* Offset will always be a multiple of four, so use the bottom bit |
7418 | as a "written" flag. */ | |
7419 | if ((linker_section_ptr->offset & 1) == 0) | |
7420 | { | |
7421 | bfd_put_32 (lsect->section->owner, | |
7422 | relocation + linker_section_ptr->addend, | |
7423 | lsect->section->contents + linker_section_ptr->offset); | |
7424 | linker_section_ptr->offset += 1; | |
252b5132 RH |
7425 | } |
7426 | ||
bd6c6e2b AM |
7427 | relocation = (lsect->section->output_section->vma |
7428 | + lsect->section->output_offset | |
76750a2f | 7429 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 7430 | - SYM_VAL (lsect->sym)); |
252b5132 | 7431 | |
25dbc73a AM |
7432 | #ifdef DEBUG |
7433 | fprintf (stderr, | |
7434 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
7435 | lsect->name, (long) relocation, (long) relocation); | |
7436 | #endif | |
252b5132 | 7437 | |
bd6c6e2b | 7438 | return relocation; |
252b5132 | 7439 | } |
25dbc73a | 7440 | |
e054468f AM |
7441 | #define PPC_LO(v) ((v) & 0xffff) |
7442 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7443 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7444 | ||
7445 | static void | |
a7f2871e | 7446 | write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p, |
e054468f AM |
7447 | struct bfd_link_info *info) |
7448 | { | |
7449 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7450 | bfd *output_bfd = info->output_bfd; | |
7451 | bfd_vma plt; | |
e054468f AM |
7452 | |
7453 | plt = ((ent->plt.offset & ~1) | |
7454 | + plt_sec->output_section->vma | |
7455 | + plt_sec->output_offset); | |
e054468f | 7456 | |
0e1862bb | 7457 | if (bfd_link_pic (info)) |
e054468f AM |
7458 | { |
7459 | bfd_vma got = 0; | |
7460 | ||
7461 | if (ent->addend >= 32768) | |
7462 | got = (ent->addend | |
7463 | + ent->sec->output_section->vma | |
7464 | + ent->sec->output_offset); | |
7465 | else if (htab->elf.hgot != NULL) | |
7466 | got = SYM_VAL (htab->elf.hgot); | |
7467 | ||
7468 | plt -= got; | |
7469 | ||
7470 | if (plt + 0x8000 < 0x10000) | |
7471 | { | |
7472 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
7473 | p += 4; | |
7474 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7475 | p += 4; | |
7476 | bfd_put_32 (output_bfd, BCTR, p); | |
7477 | p += 4; | |
da3a2088 | 7478 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); |
e054468f AM |
7479 | p += 4; |
7480 | } | |
7481 | else | |
7482 | { | |
7483 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7484 | p += 4; | |
7485 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7486 | p += 4; | |
7487 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7488 | p += 4; | |
7489 | bfd_put_32 (output_bfd, BCTR, p); | |
7490 | p += 4; | |
7491 | } | |
7492 | } | |
7493 | else | |
7494 | { | |
7495 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7496 | p += 4; | |
7497 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7498 | p += 4; | |
7499 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7500 | p += 4; | |
7501 | bfd_put_32 (output_bfd, BCTR, p); | |
7502 | p += 4; | |
7503 | } | |
7504 | } | |
7505 | ||
bd6c6e2b AM |
7506 | /* Return true if symbol is defined statically. */ |
7507 | ||
7508 | static bfd_boolean | |
7509 | is_static_defined (struct elf_link_hash_entry *h) | |
7510 | { | |
7511 | return ((h->root.type == bfd_link_hash_defined | |
7512 | || h->root.type == bfd_link_hash_defweak) | |
7513 | && h->root.u.def.section != NULL | |
7514 | && h->root.u.def.section->output_section != NULL); | |
7515 | } | |
7516 | ||
2d0f3896 AM |
7517 | /* If INSN is an opcode that may be used with an @tls operand, return |
7518 | the transformed insn for TLS optimisation, otherwise return 0. If | |
7519 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
7520 | ||
7521 | unsigned int | |
7522 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
7523 | { | |
7524 | unsigned int rtra; | |
7525 | ||
7526 | if ((insn & (0x3f << 26)) != 31 << 26) | |
7527 | return 0; | |
7528 | ||
7529 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
7530 | rtra = insn & ((1 << 26) - (1 << 16)); | |
7531 | else if (((insn >> 16) & 0x1f) == reg) | |
7532 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
7533 | else | |
7534 | return 0; | |
7535 | ||
7536 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
7537 | /* add -> addi. */ | |
7538 | insn = 14 << 26; | |
7539 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
7540 | && ((insn & (0x1f << 6)) < 14 << 6 | |
7541 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
7542 | && (insn & (0x1f << 6)) < 24 << 6))) | |
7543 | /* load and store indexed -> dform. */ | |
7544 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
7545 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
7546 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7547 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
7548 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
7549 | /* lwax -> lwa. */ | |
7550 | insn = (58 << 26) | 2; | |
7551 | else | |
7552 | return 0; | |
7553 | insn |= rtra; | |
7554 | return insn; | |
7555 | } | |
7556 | ||
766bc656 AM |
7557 | /* If INSN is an opcode that may be used with an @tprel operand, return |
7558 | the transformed insn for an undefined weak symbol, ie. with the | |
7559 | thread pointer REG operand removed. Otherwise return 0. */ | |
7560 | ||
7561 | unsigned int | |
7562 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
7563 | { | |
7564 | if ((insn & (0x1f << 16)) == reg << 16 | |
7565 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7566 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
7567 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7568 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7569 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7570 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7571 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7572 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7573 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7574 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7575 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7576 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7577 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7578 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7579 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7580 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7581 | && (insn & 3) != 1) | |
7582 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7583 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
7584 | { | |
7585 | insn &= ~(0x1f << 16); | |
7586 | } | |
7587 | else if ((insn & (0x1f << 21)) == reg << 21 | |
7588 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
7589 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
7590 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
7591 | { | |
7592 | insn &= ~(0x1f << 21); | |
7593 | insn |= (insn & (0x1f << 16)) << 5; | |
7594 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
7595 | insn -= 2 >> 26; /* convert to ori,oris */ | |
7596 | } | |
7597 | else | |
7598 | insn = 0; | |
7599 | return insn; | |
7600 | } | |
7601 | ||
1fe532cf AM |
7602 | static bfd_boolean |
7603 | is_insn_ds_form (unsigned int insn) | |
7604 | { | |
7605 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
7606 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
7607 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
7608 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
7609 | } | |
7610 | ||
7611 | static bfd_boolean | |
7612 | is_insn_dq_form (unsigned int insn) | |
7613 | { | |
a680de9a PB |
7614 | return ((insn & (0x3f << 26)) == 56u << 26 /* lq */ |
7615 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
7616 | && (insn & 3) == 1)); | |
1fe532cf AM |
7617 | } |
7618 | ||
252b5132 RH |
7619 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7620 | to handle the relocations for a section. | |
7621 | ||
7622 | The relocs are always passed as Rela structures; if the section | |
7623 | actually uses Rel structures, the r_addend field will always be | |
7624 | zero. | |
7625 | ||
7626 | This function is responsible for adjust the section contents as | |
7627 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7628 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
7629 | necessary. |
7630 | ||
7631 | This function does not have to worry about setting the reloc | |
7632 | address or the reloc symbol index. | |
7633 | ||
7634 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7635 | ||
7636 | LOCAL_SECTIONS is an array giving the section in the input file | |
7637 | corresponding to the st_shndx field of each local symbol. | |
7638 | ||
7639 | The global hash table entry for the global symbols can be found | |
7640 | via elf_sym_hashes (input_bfd). | |
7641 | ||
1049f94e | 7642 | When generating relocatable output, this function must handle |
252b5132 RH |
7643 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7644 | going to be the section symbol corresponding to the output | |
7645 | section, which means that the addend must be adjusted | |
7646 | accordingly. */ | |
7647 | ||
b34976b6 | 7648 | static bfd_boolean |
55fd94b0 AM |
7649 | ppc_elf_relocate_section (bfd *output_bfd, |
7650 | struct bfd_link_info *info, | |
7651 | bfd *input_bfd, | |
7652 | asection *input_section, | |
7653 | bfd_byte *contents, | |
7654 | Elf_Internal_Rela *relocs, | |
7655 | Elf_Internal_Sym *local_syms, | |
7656 | asection **local_sections) | |
252b5132 | 7657 | { |
7619e7c7 AM |
7658 | Elf_Internal_Shdr *symtab_hdr; |
7659 | struct elf_link_hash_entry **sym_hashes; | |
7660 | struct ppc_elf_link_hash_table *htab; | |
7661 | Elf_Internal_Rela *rel; | |
c316a17c | 7662 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
7663 | Elf_Internal_Rela *relend; |
7664 | Elf_Internal_Rela outrel; | |
f95f8542 | 7665 | asection *got2; |
252b5132 | 7666 | bfd_vma *local_got_offsets; |
b34976b6 | 7667 | bfd_boolean ret = TRUE; |
95f0d0d2 | 7668 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
3348747a | 7669 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
7670 | unsigned int picfixup_size = 0; |
7671 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 7672 | |
252b5132 | 7673 | #ifdef DEBUG |
d003868e AM |
7674 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
7675 | "%ld relocations%s", | |
7676 | input_bfd, input_section, | |
7677 | (long) input_section->reloc_count, | |
0e1862bb | 7678 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
7679 | #endif |
7680 | ||
a6aa5195 AM |
7681 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7682 | ||
e47cd125 | 7683 | /* Initialize howto table if not already done. */ |
8da6118f | 7684 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7685 | ppc_elf_howto_init (); |
7686 | ||
7619e7c7 | 7687 | htab = ppc_elf_hash_table (info); |
252b5132 | 7688 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7689 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7690 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7691 | /* We have to handle relocations in vxworks .tls_vars sections |
7692 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 7693 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
7694 | && !strcmp (input_section->output_section->name, |
7695 | ".tls_vars")); | |
d3e454b9 AM |
7696 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
7697 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 7698 | rel = wrel = relocs; |
7619e7c7 | 7699 | relend = relocs + input_section->reloc_count; |
c316a17c | 7700 | for (; rel < relend; wrel++, rel++) |
252b5132 | 7701 | { |
7619e7c7 AM |
7702 | enum elf_ppc_reloc_type r_type; |
7703 | bfd_vma addend; | |
7704 | bfd_reloc_status_type r; | |
7705 | Elf_Internal_Sym *sym; | |
7706 | asection *sec; | |
7707 | struct elf_link_hash_entry *h; | |
7708 | const char *sym_name; | |
252b5132 RH |
7709 | reloc_howto_type *howto; |
7710 | unsigned long r_symndx; | |
7711 | bfd_vma relocation; | |
91d6fa6a | 7712 | bfd_vma branch_bit, from; |
7619e7c7 AM |
7713 | bfd_boolean unresolved_reloc; |
7714 | bfd_boolean warned; | |
7715 | unsigned int tls_type, tls_mask, tls_gd; | |
e054468f | 7716 | struct plt_entry **ifunc; |
86c95733 | 7717 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7718 | |
c316a17c | 7719 | again: |
55fd94b0 AM |
7720 | r_type = ELF32_R_TYPE (rel->r_info); |
7721 | sym = NULL; | |
7722 | sec = NULL; | |
7723 | h = NULL; | |
7619e7c7 AM |
7724 | unresolved_reloc = FALSE; |
7725 | warned = FALSE; | |
252b5132 | 7726 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7727 | |
252b5132 RH |
7728 | if (r_symndx < symtab_hdr->sh_info) |
7729 | { | |
7730 | sym = local_syms + r_symndx; | |
7731 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7732 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7733 | |
8517fae7 | 7734 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7735 | } |
7736 | else | |
7737 | { | |
62d887d4 L |
7738 | bfd_boolean ignored; |
7739 | ||
b2a8e766 AM |
7740 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7741 | r_symndx, symtab_hdr, sym_hashes, | |
7742 | h, sec, relocation, | |
62d887d4 | 7743 | unresolved_reloc, warned, ignored); |
9abc968f | 7744 | |
252b5132 | 7745 | sym_name = h->root.root.string; |
7619e7c7 AM |
7746 | } |
7747 | ||
dbaa2011 | 7748 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7749 | { |
7750 | /* For relocs against symbols from removed linkonce sections, | |
7751 | or sections discarded by a linker script, we just want the | |
7752 | section contents zeroed. Avoid any special processing. */ | |
7753 | howto = NULL; | |
7754 | if (r_type < R_PPC_max) | |
7755 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
7756 | |
7757 | _bfd_clear_contents (howto, input_bfd, input_section, | |
7758 | contents + rel->r_offset); | |
7759 | wrel->r_offset = rel->r_offset; | |
7760 | wrel->r_info = 0; | |
7761 | wrel->r_addend = 0; | |
7762 | ||
7763 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 7764 | symbols defined in discarded sections. Not done for |
c316a17c AM |
7765 | non-debug to preserve relocs in .eh_frame which the |
7766 | eh_frame editing code expects to be present. */ | |
7767 | if (bfd_link_relocatable (info) | |
7768 | && (input_section->flags & SEC_DEBUGGING)) | |
7769 | wrel--; | |
7770 | ||
7771 | continue; | |
ab96bf03 AM |
7772 | } |
7773 | ||
0e1862bb | 7774 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
7775 | { |
7776 | if (got2 != NULL | |
7777 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7778 | && rel->r_addend != 0) |
ab96bf03 AM |
7779 | { |
7780 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7781 | addend specifies the GOT pointer offset within .got2. */ | |
7782 | rel->r_addend += got2->output_offset; | |
7783 | } | |
53291d1f AM |
7784 | if (r_type != R_PPC_RELAX_PLT |
7785 | && r_type != R_PPC_RELAX_PLTREL24 | |
7786 | && r_type != R_PPC_RELAX) | |
c316a17c | 7787 | goto copy_reloc; |
ab96bf03 AM |
7788 | } |
7789 | ||
7619e7c7 AM |
7790 | /* TLS optimizations. Replace instruction sequences and relocs |
7791 | based on information we collected in tls_optimize. We edit | |
7792 | RELOCS so that --emit-relocs will output something sensible | |
7793 | for the final instruction stream. */ | |
7794 | tls_mask = 0; | |
7795 | tls_gd = 0; | |
727fc41e AM |
7796 | if (h != NULL) |
7797 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7798 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7799 | { |
e054468f | 7800 | struct plt_entry **local_plt; |
727fc41e | 7801 | char *lgot_masks; |
e054468f AM |
7802 | local_plt |
7803 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7804 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7805 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7806 | } |
7807 | ||
7808 | /* Ensure reloc mapping code below stays sane. */ | |
7809 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7810 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7811 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7812 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7813 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7814 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7815 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7816 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7817 | abort (); | |
7818 | switch (r_type) | |
7819 | { | |
7820 | default: | |
7821 | break; | |
7822 | ||
7823 | case R_PPC_GOT_TPREL16: | |
7824 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7825 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7826 | && (tls_mask & TLS_TPREL) == 0) |
7827 | { | |
7828 | bfd_vma insn; | |
91d6fa6a | 7829 | |
95f0d0d2 | 7830 | insn = bfd_get_32 (input_bfd, |
c316a17c | 7831 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7832 | insn &= 31 << 21; |
7833 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
95f0d0d2 | 7834 | bfd_put_32 (input_bfd, insn, |
c316a17c | 7835 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7836 | r_type = R_PPC_TPREL16_HA; |
7837 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7838 | } | |
7839 | break; | |
7840 | ||
7841 | case R_PPC_TLS: | |
e054468f | 7842 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7843 | && (tls_mask & TLS_TPREL) == 0) |
7844 | { | |
2d0f3896 AM |
7845 | bfd_vma insn; |
7846 | ||
95f0d0d2 | 7847 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7848 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7849 | if (insn == 0) | |
7619e7c7 | 7850 | abort (); |
95f0d0d2 | 7851 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
7619e7c7 AM |
7852 | r_type = R_PPC_TPREL16_LO; |
7853 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7854 | |
7619e7c7 | 7855 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7856 | PPC_TPREL16_LO which is at low-order half-word. */ |
7857 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7858 | } |
7859 | break; | |
7860 | ||
7861 | case R_PPC_GOT_TLSGD16_HI: | |
7862 | case R_PPC_GOT_TLSGD16_HA: | |
7863 | tls_gd = TLS_TPRELGD; | |
e054468f | 7864 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7865 | goto tls_gdld_hi; |
7866 | break; | |
7867 | ||
7868 | case R_PPC_GOT_TLSLD16_HI: | |
7869 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7870 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7871 | { |
7872 | tls_gdld_hi: | |
7873 | if ((tls_mask & tls_gd) != 0) | |
7874 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7875 | + R_PPC_GOT_TPREL16); | |
7876 | else | |
7877 | { | |
4fe5ca5b | 7878 | rel->r_offset -= d_offset; |
95f0d0d2 | 7879 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7880 | r_type = R_PPC_NONE; |
7881 | } | |
7882 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7883 | } | |
7884 | break; | |
7885 | ||
7886 | case R_PPC_GOT_TLSGD16: | |
7887 | case R_PPC_GOT_TLSGD16_LO: | |
7888 | tls_gd = TLS_TPRELGD; | |
e054468f | 7889 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7890 | goto tls_ldgd_opt; |
7619e7c7 AM |
7891 | break; |
7892 | ||
7893 | case R_PPC_GOT_TLSLD16: | |
7894 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7895 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7896 | { |
3a71aa26 | 7897 | unsigned int insn1, insn2; |
b7fcf6f6 | 7898 | bfd_vma offset; |
7619e7c7 | 7899 | |
b7fcf6f6 | 7900 | tls_ldgd_opt: |
727fc41e AM |
7901 | offset = (bfd_vma) -1; |
7902 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7903 | __tls_get_addr calls, we must trust that the call | |
7904 | stays with its arg setup insns, ie. that the next | |
7905 | reloc is the __tls_get_addr call associated with | |
7906 | the current reloc. Edit both insns. */ | |
7907 | if (input_section->has_tls_get_addr_call | |
7908 | && rel + 1 < relend | |
7909 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7910 | htab->tls_get_addr)) | |
7911 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7912 | /* We read the low GOT_TLS insn because we need to keep |
7913 | the destination reg. It may be something other than | |
7914 | the usual r3, and moved to r3 before the call by | |
7915 | intervening code. */ | |
95f0d0d2 | 7916 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 7917 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7918 | if ((tls_mask & tls_gd) != 0) |
7919 | { | |
7920 | /* IE */ | |
b86ac8e3 | 7921 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 7922 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
7923 | if (offset != (bfd_vma) -1) |
7924 | { | |
f58d5a2d | 7925 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e | 7926 | insn2 = 0x7c631214; /* add 3,3,2 */ |
95f0d0d2 | 7927 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7928 | } |
b7fcf6f6 AM |
7929 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7930 | + R_PPC_GOT_TPREL16); | |
7931 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7932 | } | |
7933 | else | |
7934 | { | |
7935 | /* LE */ | |
b86ac8e3 AM |
7936 | insn1 &= 0x1f << 21; |
7937 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7938 | if (tls_gd == 0) |
7939 | { | |
b7fcf6f6 | 7940 | /* Was an LD reloc. */ |
1d483afe AM |
7941 | for (r_symndx = 0; |
7942 | r_symndx < symtab_hdr->sh_info; | |
7943 | r_symndx++) | |
7944 | if (local_sections[r_symndx] == sec) | |
7945 | break; | |
7946 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7947 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7948 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7949 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7950 | rel->r_addend -= (local_syms[r_symndx].st_value |
7951 | + sec->output_offset | |
7952 | + sec->output_section->vma); | |
7619e7c7 | 7953 | } |
b7fcf6f6 AM |
7954 | r_type = R_PPC_TPREL16_HA; |
7955 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7956 | if (offset != (bfd_vma) -1) |
7957 | { | |
7958 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7959 | rel[1].r_offset = offset + d_offset; | |
7960 | rel[1].r_addend = rel->r_addend; | |
7961 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 7962 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7963 | } |
b7fcf6f6 | 7964 | } |
95f0d0d2 | 7965 | bfd_put_32 (input_bfd, insn1, |
b7fcf6f6 | 7966 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7967 | if (tls_gd == 0) |
7968 | { | |
7969 | /* We changed the symbol on an LD reloc. Start over | |
7970 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 7971 | goto again; |
7619e7c7 | 7972 | } |
252b5132 | 7973 | } |
7619e7c7 | 7974 | break; |
727fc41e AM |
7975 | |
7976 | case R_PPC_TLSGD: | |
e054468f | 7977 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
727fc41e AM |
7978 | { |
7979 | unsigned int insn2; | |
7980 | bfd_vma offset = rel->r_offset; | |
7981 | ||
7982 | if ((tls_mask & TLS_TPRELGD) != 0) | |
7983 | { | |
7984 | /* IE */ | |
7985 | r_type = R_PPC_NONE; | |
7986 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
7987 | } | |
7988 | else | |
7989 | { | |
7990 | /* LE */ | |
7991 | r_type = R_PPC_TPREL16_LO; | |
7992 | rel->r_offset += d_offset; | |
7993 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7994 | } | |
7995 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
95f0d0d2 | 7996 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
7997 | /* Zap the reloc on the _tls_get_addr call too. */ |
7998 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 7999 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
8000 | } |
8001 | break; | |
8002 | ||
8003 | case R_PPC_TLSLD: | |
e054468f | 8004 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
727fc41e AM |
8005 | { |
8006 | unsigned int insn2; | |
8007 | ||
8008 | for (r_symndx = 0; | |
8009 | r_symndx < symtab_hdr->sh_info; | |
8010 | r_symndx++) | |
8011 | if (local_sections[r_symndx] == sec) | |
8012 | break; | |
8013 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 8014 | r_symndx = STN_UNDEF; |
727fc41e | 8015 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 8016 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
8017 | rel->r_addend -= (local_syms[r_symndx].st_value |
8018 | + sec->output_offset | |
8019 | + sec->output_section->vma); | |
8020 | ||
8021 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
8022 | rel->r_offset += d_offset; | |
8023 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 8024 | bfd_put_32 (input_bfd, insn2, |
727fc41e AM |
8025 | contents + rel->r_offset - d_offset); |
8026 | /* Zap the reloc on the _tls_get_addr call too. */ | |
8027 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 8028 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 8029 | goto again; |
727fc41e AM |
8030 | } |
8031 | break; | |
7619e7c7 AM |
8032 | } |
8033 | ||
8034 | /* Handle other relocations that tweak non-addend part of insn. */ | |
8035 | branch_bit = 0; | |
8036 | switch (r_type) | |
8037 | { | |
8038 | default: | |
8039 | break; | |
8040 | ||
8041 | /* Branch taken prediction relocations. */ | |
8042 | case R_PPC_ADDR14_BRTAKEN: | |
8043 | case R_PPC_REL14_BRTAKEN: | |
8044 | branch_bit = BRANCH_PREDICT_BIT; | |
1a0670f3 | 8045 | /* Fall through. */ |
7619e7c7 | 8046 | |
4cc11e76 | 8047 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
8048 | case R_PPC_ADDR14_BRNTAKEN: |
8049 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a NC |
8050 | { |
8051 | bfd_vma insn; | |
7619e7c7 | 8052 | |
95f0d0d2 | 8053 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
91d6fa6a NC |
8054 | insn &= ~BRANCH_PREDICT_BIT; |
8055 | insn |= branch_bit; | |
7619e7c7 | 8056 | |
91d6fa6a NC |
8057 | from = (rel->r_offset |
8058 | + input_section->output_offset | |
8059 | + input_section->output_section->vma); | |
7619e7c7 | 8060 | |
91d6fa6a NC |
8061 | /* Invert 'y' bit if not the default. */ |
8062 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8063 | insn ^= BRANCH_PREDICT_BIT; | |
8064 | ||
95f0d0d2 | 8065 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
91d6fa6a NC |
8066 | break; |
8067 | } | |
252b5132 RH |
8068 | } |
8069 | ||
d3e454b9 AM |
8070 | if (ELIMINATE_COPY_RELOCS |
8071 | && h != NULL | |
8072 | && !h->def_regular | |
8073 | && h->protected_def | |
8074 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
8075 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
8076 | && htab->params->pic_fixup > 0) | |
8077 | { | |
8078 | /* Convert lis;addi or lis;load/store accessing a protected | |
8079 | variable defined in a shared library to PIC. */ | |
8080 | unsigned int insn; | |
8081 | ||
8082 | if (r_type == R_PPC_ADDR16_HA) | |
8083 | { | |
95f0d0d2 | 8084 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8085 | contents + rel->r_offset - d_offset); |
8086 | if ((insn & (0x3f << 26)) == (15u << 26) | |
8087 | && (insn & (0x1f << 16)) == 0 /* lis */) | |
8088 | { | |
8089 | bfd_byte *p; | |
8090 | bfd_vma off; | |
8091 | bfd_vma got_addr; | |
8092 | ||
8093 | p = (contents + input_section->size | |
8094 | - relax_info->workaround_size | |
8095 | - relax_info->picfixup_size | |
8096 | + picfixup_size); | |
8097 | off = (p - contents) - (rel->r_offset - d_offset); | |
8098 | if (off > 0x1fffffc || (off & 3) != 0) | |
8099 | info->callbacks->einfo | |
174d0a74 | 8100 | (_("%H: fixup branch overflow\n"), |
d3e454b9 AM |
8101 | input_bfd, input_section, rel->r_offset); |
8102 | ||
95f0d0d2 | 8103 | bfd_put_32 (input_bfd, B | off, |
d3e454b9 | 8104 | contents + rel->r_offset - d_offset); |
ce558b89 AM |
8105 | got_addr = (htab->elf.sgot->output_section->vma |
8106 | + htab->elf.sgot->output_offset | |
d3e454b9 | 8107 | + (h->got.offset & ~1)); |
c316a17c AM |
8108 | wrel->r_offset = (p - contents) + d_offset; |
8109 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
8110 | wrel->r_addend = got_addr; | |
d3e454b9 | 8111 | insn &= ~0xffff; |
4aef7643 | 8112 | insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff; |
95f0d0d2 | 8113 | bfd_put_32 (input_bfd, insn, p); |
d3e454b9 AM |
8114 | |
8115 | /* Convert lis to lwz, loading address from GOT. */ | |
8116 | insn &= ~0xffff; | |
8117 | insn ^= (32u ^ 15u) << 26; | |
8118 | insn |= (insn & (0x1f << 21)) >> 5; | |
8119 | insn |= got_addr & 0xffff; | |
95f0d0d2 | 8120 | bfd_put_32 (input_bfd, insn, p + 4); |
d3e454b9 | 8121 | |
95f0d0d2 | 8122 | bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); |
d3e454b9 AM |
8123 | picfixup_size += 12; |
8124 | ||
8125 | /* Use one of the spare relocs, so --emit-relocs | |
8126 | output is reasonable. */ | |
8127 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
8128 | wrel++, rel++; |
8129 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 8130 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 8131 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
8132 | |
8133 | /* Continue on as if we had a got reloc, to output | |
8134 | dynamic reloc. */ | |
8135 | r_type = R_PPC_GOT16_LO; | |
8136 | } | |
8137 | else | |
2c4d9cbe | 8138 | _bfd_error_handler |
695344c0 | 8139 | /* xgettext:c-format */ |
e3fbc3da | 8140 | (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"), |
d3e454b9 AM |
8141 | input_bfd, input_section, rel->r_offset, |
8142 | "R_PPC_ADDR16_HA", insn); | |
8143 | } | |
8144 | else if (r_type == R_PPC_ADDR16_LO) | |
8145 | { | |
95f0d0d2 | 8146 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
8147 | contents + rel->r_offset - d_offset); |
8148 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
8149 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
8150 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
8151 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
8152 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
8153 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
8154 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
8155 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
8156 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
8157 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
8158 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
8159 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
8160 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
8161 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
8162 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
8163 | && (insn & 3) != 1) | |
8164 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
8165 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
8166 | { | |
8167 | /* Arrange to apply the reloc addend, if any. */ | |
8168 | relocation = 0; | |
8169 | unresolved_reloc = FALSE; | |
8170 | rel->r_info = ELF32_R_INFO (0, r_type); | |
8171 | } | |
8172 | else | |
2c4d9cbe | 8173 | _bfd_error_handler |
695344c0 | 8174 | /* xgettext:c-format */ |
e3fbc3da | 8175 | (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"), |
d3e454b9 AM |
8176 | input_bfd, input_section, rel->r_offset, |
8177 | "R_PPC_ADDR16_LO", insn); | |
8178 | } | |
8179 | } | |
8180 | ||
e054468f | 8181 | ifunc = NULL; |
25f23106 | 8182 | if (!htab->is_vxworks) |
e054468f | 8183 | { |
de972ffa AM |
8184 | struct plt_entry *ent; |
8185 | ||
e054468f AM |
8186 | if (h != NULL) |
8187 | { | |
8188 | if (h->type == STT_GNU_IFUNC) | |
8189 | ifunc = &h->plt.plist; | |
8190 | } | |
de972ffa AM |
8191 | else if (local_got_offsets != NULL |
8192 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 8193 | { |
de972ffa | 8194 | struct plt_entry **local_plt; |
e054468f | 8195 | |
de972ffa AM |
8196 | local_plt = (struct plt_entry **) (local_got_offsets |
8197 | + symtab_hdr->sh_info); | |
8198 | ifunc = local_plt + r_symndx; | |
e054468f | 8199 | } |
e054468f | 8200 | |
de972ffa AM |
8201 | ent = NULL; |
8202 | if (ifunc != NULL | |
0e1862bb | 8203 | && (!bfd_link_pic (info) |
de972ffa AM |
8204 | || is_branch_reloc (r_type))) |
8205 | { | |
8206 | addend = 0; | |
0e1862bb | 8207 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info)) |
de972ffa AM |
8208 | addend = rel->r_addend; |
8209 | ent = find_plt_ent (ifunc, got2, addend); | |
8210 | } | |
8211 | if (ent != NULL) | |
8212 | { | |
888a7fc3 AM |
8213 | if (bfd_link_pic (info) |
8214 | && ent->sec != got2 | |
8215 | && htab->plt_type != PLT_NEW | |
8216 | && (!htab->elf.dynamic_sections_created | |
8217 | || h == NULL | |
8218 | || h->dynindx == -1)) | |
8219 | { | |
8220 | /* Uh oh, we are going to create a pic glink stub | |
8221 | for an ifunc (here for h == NULL and later in | |
8222 | finish_dynamic_symbol for h != NULL), and | |
8223 | apparently are using code compiled with | |
8224 | -mbss-plt. The difficulty is that -mbss-plt code | |
8225 | gives no indication via a magic PLTREL24 addend | |
8226 | whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or | |
8227 | is pointing into a .got2 section (and how far | |
8228 | into .got2). */ | |
8229 | info->callbacks->einfo | |
695344c0 | 8230 | /* xgettext:c-format */ |
174d0a74 | 8231 | (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"), |
888a7fc3 AM |
8232 | input_bfd, input_section, rel->r_offset, sym_name); |
8233 | } | |
e054468f AM |
8234 | if (h == NULL && (ent->plt.offset & 1) == 0) |
8235 | { | |
8236 | Elf_Internal_Rela rela; | |
8237 | bfd_byte *loc; | |
8238 | ||
ce558b89 AM |
8239 | rela.r_offset = (htab->elf.iplt->output_section->vma |
8240 | + htab->elf.iplt->output_offset | |
e054468f AM |
8241 | + ent->plt.offset); |
8242 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8243 | rela.r_addend = relocation; | |
ce558b89 AM |
8244 | loc = htab->elf.irelplt->contents; |
8245 | loc += (htab->elf.irelplt->reloc_count++ | |
25f23106 | 8246 | * sizeof (Elf32_External_Rela)); |
e054468f | 8247 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
82e66161 | 8248 | htab->local_ifunc_resolver = 1; |
e054468f AM |
8249 | |
8250 | ent->plt.offset |= 1; | |
8251 | } | |
8252 | if (h == NULL && (ent->glink_offset & 1) == 0) | |
8253 | { | |
a7f2871e AM |
8254 | unsigned char *p = ((unsigned char *) htab->glink->contents |
8255 | + ent->glink_offset); | |
ce558b89 | 8256 | write_glink_stub (ent, htab->elf.iplt, p, info); |
e054468f AM |
8257 | ent->glink_offset |= 1; |
8258 | } | |
8259 | ||
8260 | unresolved_reloc = FALSE; | |
8261 | if (htab->plt_type == PLT_NEW | |
8262 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
8263 | || h == NULL |
8264 | || h->dynindx == -1) | |
e054468f AM |
8265 | relocation = (htab->glink->output_section->vma |
8266 | + htab->glink->output_offset | |
8267 | + (ent->glink_offset & ~1)); | |
8268 | else | |
ce558b89 AM |
8269 | relocation = (htab->elf.splt->output_section->vma |
8270 | + htab->elf.splt->output_offset | |
e054468f AM |
8271 | + ent->plt.offset); |
8272 | } | |
8273 | } | |
8274 | ||
7619e7c7 | 8275 | addend = rel->r_addend; |
7619e7c7 | 8276 | howto = NULL; |
55fd94b0 AM |
8277 | if (r_type < R_PPC_max) |
8278 | howto = ppc_elf_howto_table[r_type]; | |
9a23f96e AM |
8279 | |
8280 | switch (r_type) | |
8281 | { | |
8282 | default: | |
8283 | break; | |
8284 | ||
8285 | case R_PPC_TPREL16_HA: | |
8286 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8287 | { | |
8288 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8289 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8290 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8291 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
8292 | /* xgettext:c-format */ | |
8293 | info->callbacks->minfo | |
8294 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8295 | input_bfd, input_section, rel->r_offset, howto->name, insn); | |
8296 | else | |
8297 | bfd_put_32 (input_bfd, NOP, p); | |
8298 | } | |
8299 | break; | |
8300 | ||
8301 | case R_PPC_TPREL16_LO: | |
8302 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
8303 | { | |
8304 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8305 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8306 | insn &= ~(0x1f << 16); | |
8307 | insn |= 2 << 16; | |
8308 | bfd_put_32 (input_bfd, insn, p); | |
8309 | } | |
8310 | break; | |
8311 | } | |
8312 | ||
8313 | tls_type = 0; | |
7619e7c7 | 8314 | switch (r_type) |
252b5132 RH |
8315 | { |
8316 | default: | |
25f53a85 | 8317 | info->callbacks->einfo |
695344c0 | 8318 | /* xgettext:c-format */ |
8de848d8 | 8319 | (_("%P: %B: unknown relocation type %d for symbol %s\n"), |
d003868e | 8320 | input_bfd, (int) r_type, sym_name); |
252b5132 RH |
8321 | |
8322 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8323 | ret = FALSE; |
c316a17c | 8324 | goto copy_reloc; |
252b5132 | 8325 | |
7619e7c7 AM |
8326 | case R_PPC_NONE: |
8327 | case R_PPC_TLS: | |
727fc41e AM |
8328 | case R_PPC_TLSGD: |
8329 | case R_PPC_TLSLD: | |
7619e7c7 AM |
8330 | case R_PPC_EMB_MRKREF: |
8331 | case R_PPC_GNU_VTINHERIT: | |
8332 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 8333 | goto copy_reloc; |
7595d193 | 8334 | |
7619e7c7 AM |
8335 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
8336 | address in the GOT as relocation value instead of the | |
8337 | symbol's value itself. Also, create a GOT entry for the | |
8338 | symbol and put the symbol value there. */ | |
8339 | case R_PPC_GOT_TLSGD16: | |
8340 | case R_PPC_GOT_TLSGD16_LO: | |
8341 | case R_PPC_GOT_TLSGD16_HI: | |
8342 | case R_PPC_GOT_TLSGD16_HA: | |
8343 | tls_type = TLS_TLS | TLS_GD; | |
8344 | goto dogot; | |
8345 | ||
8346 | case R_PPC_GOT_TLSLD16: | |
8347 | case R_PPC_GOT_TLSLD16_LO: | |
8348 | case R_PPC_GOT_TLSLD16_HI: | |
8349 | case R_PPC_GOT_TLSLD16_HA: | |
8350 | tls_type = TLS_TLS | TLS_LD; | |
8351 | goto dogot; | |
8352 | ||
8353 | case R_PPC_GOT_TPREL16: | |
8354 | case R_PPC_GOT_TPREL16_LO: | |
8355 | case R_PPC_GOT_TPREL16_HI: | |
8356 | case R_PPC_GOT_TPREL16_HA: | |
8357 | tls_type = TLS_TLS | TLS_TPREL; | |
8358 | goto dogot; | |
8359 | ||
8360 | case R_PPC_GOT_DTPREL16: | |
8361 | case R_PPC_GOT_DTPREL16_LO: | |
8362 | case R_PPC_GOT_DTPREL16_HI: | |
8363 | case R_PPC_GOT_DTPREL16_HA: | |
8364 | tls_type = TLS_TLS | TLS_DTPREL; | |
8365 | goto dogot; | |
8366 | ||
8367 | case R_PPC_GOT16: | |
8368 | case R_PPC_GOT16_LO: | |
8369 | case R_PPC_GOT16_HI: | |
8370 | case R_PPC_GOT16_HA: | |
727fc41e | 8371 | tls_mask = 0; |
7619e7c7 AM |
8372 | dogot: |
8373 | { | |
8374 | /* Relocation is to the entry for this symbol in the global | |
8375 | offset table. */ | |
8376 | bfd_vma off; | |
8377 | bfd_vma *offp; | |
8378 | unsigned long indx; | |
8379 | ||
ce558b89 | 8380 | if (htab->elf.sgot == NULL) |
7619e7c7 AM |
8381 | abort (); |
8382 | ||
8383 | indx = 0; | |
8384 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 8385 | && (h == NULL |
f5385ebf | 8386 | || !h->def_dynamic)) |
7619e7c7 AM |
8387 | offp = &htab->tlsld_got.offset; |
8388 | else if (h != NULL) | |
8389 | { | |
f0158f44 AM |
8390 | if (!htab->elf.dynamic_sections_created |
8391 | || h->dynindx == -1 | |
8392 | || SYMBOL_REFERENCES_LOCAL (info, h) | |
21d68fcd | 8393 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7619e7c7 AM |
8394 | /* This is actually a static link, or it is a |
8395 | -Bsymbolic link and the symbol is defined | |
8396 | locally, or the symbol was forced to be local | |
8397 | because of a version file. */ | |
8398 | ; | |
8399 | else | |
8400 | { | |
8401 | indx = h->dynindx; | |
8402 | unresolved_reloc = FALSE; | |
8403 | } | |
8404 | offp = &h->got.offset; | |
8405 | } | |
8406 | else | |
8407 | { | |
8408 | if (local_got_offsets == NULL) | |
8409 | abort (); | |
8410 | offp = &local_got_offsets[r_symndx]; | |
8411 | } | |
8412 | ||
8413 | /* The offset must always be a multiple of 4. We use the | |
8414 | least significant bit to record whether we have already | |
8415 | processed this entry. */ | |
8416 | off = *offp; | |
8417 | if ((off & 1) != 0) | |
8418 | off &= ~1; | |
8419 | else | |
8420 | { | |
70bccea4 AM |
8421 | unsigned int tls_m = (tls_mask |
8422 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
8423 | | TLS_TPREL | TLS_TPRELGD)); | |
8424 | ||
8425 | if (offp == &htab->tlsld_got.offset) | |
8426 | tls_m = TLS_LD; | |
8427 | else if (h == NULL | |
f5385ebf | 8428 | || !h->def_dynamic) |
70bccea4 AM |
8429 | tls_m &= ~TLS_LD; |
8430 | ||
8431 | /* We might have multiple got entries for this sym. | |
8432 | Initialize them all. */ | |
8433 | do | |
7619e7c7 | 8434 | { |
70bccea4 AM |
8435 | int tls_ty = 0; |
8436 | ||
8437 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 8438 | { |
70bccea4 AM |
8439 | tls_ty = TLS_TLS | TLS_LD; |
8440 | tls_m &= ~TLS_LD; | |
8441 | } | |
8442 | else if ((tls_m & TLS_GD) != 0) | |
8443 | { | |
8444 | tls_ty = TLS_TLS | TLS_GD; | |
8445 | tls_m &= ~TLS_GD; | |
8446 | } | |
8447 | else if ((tls_m & TLS_DTPREL) != 0) | |
8448 | { | |
8449 | tls_ty = TLS_TLS | TLS_DTPREL; | |
8450 | tls_m &= ~TLS_DTPREL; | |
8451 | } | |
8452 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
8453 | { | |
8454 | tls_ty = TLS_TLS | TLS_TPREL; | |
8455 | tls_m = 0; | |
7619e7c7 | 8456 | } |
7619e7c7 | 8457 | |
70bccea4 | 8458 | /* Generate relocs for the dynamic linker. */ |
f0158f44 AM |
8459 | if (indx != 0 |
8460 | || (bfd_link_pic (info) | |
8461 | && (h == NULL | |
21d68fcd | 8462 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
f15d0b54 AM |
8463 | || offp == &htab->tlsld_got.offset) |
8464 | && !(tls_ty == (TLS_TLS | TLS_TPREL) | |
8465 | && bfd_link_executable (info) | |
8466 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
7619e7c7 | 8467 | { |
ce558b89 | 8468 | asection *rsec = htab->elf.srelgot; |
91d6fa6a | 8469 | bfd_byte * loc; |
91e21fb7 | 8470 | |
0bed072f | 8471 | if (ifunc != NULL) |
82e66161 AM |
8472 | { |
8473 | rsec = htab->elf.irelplt; | |
8474 | if (indx == 0) | |
8475 | htab->local_ifunc_resolver = 1; | |
8476 | else if (is_static_defined (h)) | |
8477 | htab->maybe_local_ifunc_resolver = 1; | |
8478 | } | |
ce558b89 AM |
8479 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
8480 | + htab->elf.sgot->output_offset | |
70bccea4 | 8481 | + off); |
e515b051 | 8482 | outrel.r_addend = 0; |
70bccea4 AM |
8483 | if (tls_ty & (TLS_LD | TLS_GD)) |
8484 | { | |
8485 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
8486 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8487 | { | |
25f23106 AM |
8488 | loc = rsec->contents; |
8489 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8490 | * sizeof (Elf32_External_Rela)); |
8491 | bfd_elf32_swap_reloca_out (output_bfd, | |
8492 | &outrel, loc); | |
e515b051 | 8493 | outrel.r_offset += 4; |
70bccea4 AM |
8494 | outrel.r_info |
8495 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
8496 | } |
8497 | } | |
8498 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
8499 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
8500 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8501 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 8502 | else if (indx != 0) |
70bccea4 | 8503 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
8504 | else if (ifunc != NULL) |
8505 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8506 | else | |
8507 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 8508 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
8509 | { |
8510 | outrel.r_addend += relocation; | |
8511 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
8512 | { |
8513 | if (htab->elf.tls_sec == NULL) | |
8514 | outrel.r_addend = 0; | |
8515 | else | |
8516 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
8517 | } | |
e515b051 | 8518 | } |
25f23106 AM |
8519 | loc = rsec->contents; |
8520 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8521 | * sizeof (Elf32_External_Rela)); |
8522 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
8523 | } |
8524 | ||
70bccea4 AM |
8525 | /* Init the .got section contents if we're not |
8526 | emitting a reloc. */ | |
8527 | else | |
7619e7c7 | 8528 | { |
70bccea4 AM |
8529 | bfd_vma value = relocation; |
8530 | ||
f0158f44 | 8531 | if (tls_ty != 0) |
70bccea4 | 8532 | { |
989f9879 AM |
8533 | if (htab->elf.tls_sec == NULL) |
8534 | value = 0; | |
8535 | else | |
8536 | { | |
f0158f44 AM |
8537 | if (tls_ty & TLS_LD) |
8538 | value = 0; | |
8539 | else | |
8540 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 8541 | if (tls_ty & TLS_TPREL) |
989f9879 AM |
8542 | value += DTP_OFFSET - TP_OFFSET; |
8543 | } | |
70bccea4 | 8544 | |
f0158f44 | 8545 | if (tls_ty & (TLS_LD | TLS_GD)) |
7b609f53 | 8546 | { |
95f0d0d2 | 8547 | bfd_put_32 (input_bfd, value, |
ce558b89 | 8548 | htab->elf.sgot->contents + off + 4); |
676ee2b5 | 8549 | value = 1; |
7b609f53 | 8550 | } |
70bccea4 | 8551 | } |
95f0d0d2 | 8552 | bfd_put_32 (input_bfd, value, |
ce558b89 | 8553 | htab->elf.sgot->contents + off); |
7619e7c7 | 8554 | } |
70bccea4 AM |
8555 | |
8556 | off += 4; | |
8557 | if (tls_ty & (TLS_LD | TLS_GD)) | |
8558 | off += 4; | |
7619e7c7 | 8559 | } |
70bccea4 AM |
8560 | while (tls_m != 0); |
8561 | ||
8562 | off = *offp; | |
8563 | *offp = off | 1; | |
7619e7c7 AM |
8564 | } |
8565 | ||
8566 | if (off >= (bfd_vma) -2) | |
8567 | abort (); | |
8568 | ||
70bccea4 AM |
8569 | if ((tls_type & TLS_TLS) != 0) |
8570 | { | |
8571 | if (tls_type != (TLS_TLS | TLS_LD)) | |
8572 | { | |
8573 | if ((tls_mask & TLS_LD) != 0 | |
8574 | && !(h == NULL | |
f5385ebf | 8575 | || !h->def_dynamic)) |
70bccea4 AM |
8576 | off += 8; |
8577 | if (tls_type != (TLS_TLS | TLS_GD)) | |
8578 | { | |
8579 | if ((tls_mask & TLS_GD) != 0) | |
8580 | off += 8; | |
8581 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
8582 | { | |
8583 | if ((tls_mask & TLS_DTPREL) != 0) | |
8584 | off += 4; | |
8585 | } | |
8586 | } | |
8587 | } | |
8588 | } | |
8589 | ||
d3e454b9 AM |
8590 | /* If here for a picfixup, we're done. */ |
8591 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 8592 | goto copy_reloc; |
d3e454b9 | 8593 | |
ce558b89 AM |
8594 | relocation = (htab->elf.sgot->output_section->vma |
8595 | + htab->elf.sgot->output_offset | |
e87d4038 AM |
8596 | + off |
8597 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
8598 | |
8599 | /* Addends on got relocations don't make much sense. | |
8600 | x+off@got is actually x@got+off, and since the got is | |
8601 | generated by a hash table traversal, the value in the | |
8602 | got at entry m+n bears little relation to the entry m. */ | |
8603 | if (addend != 0) | |
25f53a85 | 8604 | info->callbacks->einfo |
695344c0 | 8605 | /* xgettext:c-format */ |
174d0a74 | 8606 | (_("%H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 8607 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 8608 | howto->name, |
7619e7c7 AM |
8609 | sym_name); |
8610 | } | |
86c95733 | 8611 | break; |
7619e7c7 | 8612 | |
86c95733 | 8613 | /* Relocations that need no special processing. */ |
7619e7c7 | 8614 | case R_PPC_LOCAL24PC: |
252b5132 RH |
8615 | /* It makes no sense to point a local relocation |
8616 | at a symbol not in this object. */ | |
7b609f53 | 8617 | if (unresolved_reloc) |
252b5132 | 8618 | { |
1a72702b AM |
8619 | (*info->callbacks->undefined_symbol) (info, |
8620 | h->root.root.string, | |
8621 | input_bfd, | |
8622 | input_section, | |
8623 | rel->r_offset, | |
8624 | TRUE); | |
c316a17c | 8625 | goto copy_reloc; |
252b5132 | 8626 | } |
888a7fc3 AM |
8627 | if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info)) |
8628 | { | |
8629 | /* @local on an ifunc does not really make sense since | |
8630 | the ifunc resolver can take you anywhere. More | |
8631 | seriously, calls to ifuncs must go through a plt call | |
8632 | stub, and for pic the plt call stubs uses r30 to | |
8633 | access the PLT. The problem is that a call that is | |
8634 | local won't have the +32k reloc addend trick marking | |
8635 | -fPIC code, so the linker won't know whether r30 is | |
8636 | _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */ | |
695344c0 | 8637 | /* xgettext:c-format */ |
174d0a74 | 8638 | info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"), |
888a7fc3 AM |
8639 | input_bfd, input_section, rel->r_offset, |
8640 | h->root.root.string); | |
8641 | } | |
252b5132 RH |
8642 | break; |
8643 | ||
7619e7c7 AM |
8644 | case R_PPC_DTPREL16: |
8645 | case R_PPC_DTPREL16_LO: | |
8646 | case R_PPC_DTPREL16_HI: | |
8647 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8648 | if (htab->elf.tls_sec != NULL) |
8649 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8650 | break; |
8651 | ||
70bccea4 AM |
8652 | /* Relocations that may need to be propagated if this is a shared |
8653 | object. */ | |
7619e7c7 AM |
8654 | case R_PPC_TPREL16: |
8655 | case R_PPC_TPREL16_LO: | |
8656 | case R_PPC_TPREL16_HI: | |
8657 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8658 | if (h != NULL |
8659 | && h->root.type == bfd_link_hash_undefweak | |
8660 | && h->dynindx == -1) | |
8661 | { | |
8662 | /* Make this relocation against an undefined weak symbol | |
8663 | resolve to zero. This is really just a tweak, since | |
8664 | code using weak externs ought to check that they are | |
8665 | defined before using them. */ | |
8666 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
95f0d0d2 | 8667 | unsigned int insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
8668 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); |
8669 | if (insn != 0) | |
95f0d0d2 | 8670 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
8671 | break; |
8672 | } | |
989f9879 AM |
8673 | if (htab->elf.tls_sec != NULL) |
8674 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 | 8675 | /* The TPREL16 relocs shouldn't really be used in shared |
7c8bbca5 AM |
8676 | libs or with non-local symbols as that will result in |
8677 | DT_TEXTREL being set, but support them anyway. */ | |
7619e7c7 AM |
8678 | goto dodyn; |
8679 | ||
8680 | case R_PPC_TPREL32: | |
989f9879 AM |
8681 | if (htab->elf.tls_sec != NULL) |
8682 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8683 | goto dodyn; |
8684 | ||
8685 | case R_PPC_DTPREL32: | |
989f9879 AM |
8686 | if (htab->elf.tls_sec != NULL) |
8687 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8688 | goto dodyn; |
8689 | ||
e515b051 AM |
8690 | case R_PPC_DTPMOD32: |
8691 | relocation = 1; | |
8692 | addend = 0; | |
8693 | goto dodyn; | |
8694 | ||
d7128ce4 AM |
8695 | case R_PPC_REL16: |
8696 | case R_PPC_REL16_LO: | |
8697 | case R_PPC_REL16_HI: | |
8698 | case R_PPC_REL16_HA: | |
a680de9a | 8699 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
8700 | break; |
8701 | ||
7619e7c7 | 8702 | case R_PPC_REL32: |
625af618 AM |
8703 | if (h == NULL || h == htab->elf.hgot) |
8704 | break; | |
8705 | /* fall through */ | |
8706 | ||
8707 | case R_PPC_ADDR32: | |
8708 | case R_PPC_ADDR16: | |
8709 | case R_PPC_ADDR16_LO: | |
8710 | case R_PPC_ADDR16_HI: | |
8711 | case R_PPC_ADDR16_HA: | |
8712 | case R_PPC_UADDR32: | |
8713 | case R_PPC_UADDR16: | |
8714 | goto dodyn; | |
8715 | ||
b9c361e0 JL |
8716 | case R_PPC_VLE_REL8: |
8717 | case R_PPC_VLE_REL15: | |
8718 | case R_PPC_VLE_REL24: | |
625af618 | 8719 | case R_PPC_REL24: |
7619e7c7 AM |
8720 | case R_PPC_REL14: |
8721 | case R_PPC_REL14_BRTAKEN: | |
8722 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8723 | /* If these relocations are not to a named symbol, they can be |
8724 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8725 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8726 | || h == htab->elf.hgot) |
252b5132 | 8727 | break; |
70bccea4 | 8728 | /* fall through */ |
252b5132 | 8729 | |
7619e7c7 | 8730 | case R_PPC_ADDR24: |
7619e7c7 AM |
8731 | case R_PPC_ADDR14: |
8732 | case R_PPC_ADDR14_BRTAKEN: | |
8733 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 8734 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
8735 | break; |
8736 | /* fall through */ | |
8737 | ||
7619e7c7 | 8738 | dodyn: |
3348747a NS |
8739 | if ((input_section->flags & SEC_ALLOC) == 0 |
8740 | || is_vxworks_tls) | |
c87b5a93 | 8741 | break; |
c87b5a93 | 8742 | |
287c7eaf AM |
8743 | if (bfd_link_pic (info) |
8744 | ? ((h == NULL | |
8745 | || ppc_elf_hash_entry (h)->dyn_relocs != NULL) | |
8746 | && ((h != NULL && pc_dynrelocs (h)) | |
8747 | || must_be_dyn_reloc (info, r_type))) | |
8748 | : (h != NULL | |
8749 | && ppc_elf_hash_entry (h)->dyn_relocs != NULL)) | |
252b5132 | 8750 | { |
0bb2d96a | 8751 | int skip; |
f95f8542 AM |
8752 | bfd_byte *loc; |
8753 | asection *sreloc; | |
82e66161 AM |
8754 | long indx = 0; |
8755 | ||
252b5132 | 8756 | #ifdef DEBUG |
55fd94b0 AM |
8757 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8758 | "create relocation for %s\n", | |
70bccea4 AM |
8759 | (h && h->root.root.string |
8760 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8761 | #endif |
8762 | ||
8763 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8764 | are copied into the output file to be resolved at run |
8765 | time. */ | |
0bb2d96a | 8766 | skip = 0; |
5b914448 AM |
8767 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8768 | input_section, | |
8769 | rel->r_offset); | |
0bb2d96a JJ |
8770 | if (outrel.r_offset == (bfd_vma) -1 |
8771 | || outrel.r_offset == (bfd_vma) -2) | |
8772 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8773 | outrel.r_offset += (input_section->output_section->vma |
8774 | + input_section->output_offset); | |
8775 | ||
8776 | if (skip) | |
8777 | memset (&outrel, 0, sizeof outrel); | |
21d68fcd | 8778 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 8779 | { |
82e66161 AM |
8780 | indx = h->dynindx; |
8781 | BFD_ASSERT (indx != -1); | |
7619e7c7 | 8782 | unresolved_reloc = FALSE; |
82e66161 | 8783 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
8784 | outrel.r_addend = rel->r_addend; |
8785 | } | |
8786 | else | |
8787 | { | |
47388f4c AM |
8788 | outrel.r_addend = relocation + rel->r_addend; |
8789 | ||
25f23106 | 8790 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8791 | { |
25f23106 AM |
8792 | if (ifunc != NULL) |
8793 | { | |
8794 | /* If we get here when building a static | |
8795 | executable, then the libc startup function | |
8796 | responsible for applying indirect function | |
8797 | relocations is going to complain about | |
8798 | the reloc type. | |
8799 | If we get here when building a dynamic | |
8800 | executable, it will be because we have | |
8801 | a text relocation. The dynamic loader | |
8802 | will set the text segment writable and | |
8803 | non-executable to apply text relocations. | |
8804 | So we'll segfault when trying to run the | |
8805 | indirection function to resolve the reloc. */ | |
25f53a85 | 8806 | info->callbacks->einfo |
695344c0 | 8807 | /* xgettext:c-format */ |
174d0a74 | 8808 | (_("%H: relocation %s for indirect " |
25f53a85 AM |
8809 | "function %s unsupported\n"), |
8810 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8811 | howto->name, |
8812 | sym_name); | |
8813 | ret = FALSE; | |
8814 | } | |
cf35638d | 8815 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8816 | ; |
252b5132 RH |
8817 | else if (sec == NULL || sec->owner == NULL) |
8818 | { | |
8819 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8820 | ret = FALSE; |
252b5132 RH |
8821 | } |
8822 | else | |
8823 | { | |
8824 | asection *osec; | |
8825 | ||
47388f4c AM |
8826 | /* We are turning this relocation into one |
8827 | against a section symbol. It would be | |
8828 | proper to subtract the symbol's value, | |
8829 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8830 | but ld.so expects buggy relocs. |
8831 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
8832 | osec = sec->output_section; |
8833 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
8834 | if (indx == 0) |
8835 | { | |
8836 | osec = htab->elf.text_index_section; | |
8837 | indx = elf_section_data (osec)->dynindx; | |
8838 | } | |
8839 | BFD_ASSERT (indx != 0); | |
252b5132 | 8840 | #ifdef DEBUG |
74541ad4 | 8841 | if (indx == 0) |
e460dd0d | 8842 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
8843 | indx, osec->name, osec->flags, |
8844 | h->root.root.string); | |
252b5132 RH |
8845 | #endif |
8846 | } | |
8847 | ||
8848 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8849 | } |
25f23106 AM |
8850 | else if (ifunc != NULL) |
8851 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8852 | else | |
8853 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8854 | } |
8855 | ||
82e66161 AM |
8856 | sreloc = elf_section_data (input_section)->sreloc; |
8857 | if (ifunc) | |
8858 | { | |
8859 | sreloc = htab->elf.irelplt; | |
8860 | if (indx == 0) | |
8861 | htab->local_ifunc_resolver = 1; | |
8862 | else if (is_static_defined (h)) | |
8863 | htab->maybe_local_ifunc_resolver = 1; | |
8864 | } | |
8865 | if (sreloc == NULL) | |
8866 | return FALSE; | |
8867 | ||
947216bf AM |
8868 | loc = sreloc->contents; |
8869 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8870 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8871 | |
2243deae | 8872 | if (skip == -1) |
c316a17c | 8873 | goto copy_reloc; |
2243deae | 8874 | |
f0158f44 AM |
8875 | /* This reloc will be computed at runtime. Clear the memory |
8876 | so that it contains a predictable value for prelink. */ | |
8877 | if (!skip) | |
2243deae L |
8878 | { |
8879 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8880 | addend = 0; | |
8881 | break; | |
8882 | } | |
252b5132 | 8883 | } |
252b5132 RH |
8884 | break; |
8885 | ||
32af9f6e AM |
8886 | case R_PPC_RELAX_PLT: |
8887 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8888 | if (h != NULL) |
8889 | { | |
32af9f6e AM |
8890 | struct plt_entry *ent; |
8891 | bfd_vma got2_addend = 0; | |
8892 | ||
8893 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8894 | { | |
0e1862bb | 8895 | if (bfd_link_pic (info)) |
32af9f6e AM |
8896 | got2_addend = addend; |
8897 | addend = 0; | |
8898 | } | |
8899 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8900 | if (htab->plt_type == PLT_NEW) |
8901 | relocation = (htab->glink->output_section->vma | |
8902 | + htab->glink->output_offset | |
8903 | + ent->glink_offset); | |
8904 | else | |
ce558b89 AM |
8905 | relocation = (htab->elf.splt->output_section->vma |
8906 | + htab->elf.splt->output_offset | |
de972ffa AM |
8907 | + ent->plt.offset); |
8908 | } | |
1a0670f3 | 8909 | /* Fall through. */ |
b4a38de6 | 8910 | |
32af9f6e | 8911 | case R_PPC_RELAX: |
9abc968f | 8912 | { |
53291d1f AM |
8913 | const int *stub; |
8914 | size_t size; | |
8915 | size_t insn_offset = rel->r_offset; | |
8916 | unsigned int insn; | |
9abc968f | 8917 | |
0e1862bb | 8918 | if (bfd_link_pic (info)) |
53291d1f AM |
8919 | { |
8920 | relocation -= (input_section->output_section->vma | |
8921 | + input_section->output_offset | |
8922 | + rel->r_offset - 4); | |
8923 | stub = shared_stub_entry; | |
95f0d0d2 AM |
8924 | bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12); |
8925 | bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8); | |
8926 | bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4); | |
53291d1f AM |
8927 | stub += 3; |
8928 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8929 | } | |
8930 | else | |
8931 | { | |
8932 | stub = stub_entry; | |
8933 | size = ARRAY_SIZE (stub_entry); | |
8934 | } | |
9abc968f | 8935 | |
9abc968f | 8936 | relocation += addend; |
0e1862bb | 8937 | if (bfd_link_relocatable (info)) |
53291d1f AM |
8938 | relocation = 0; |
8939 | ||
8940 | /* First insn is HA, second is LO. */ | |
8941 | insn = *stub++; | |
8942 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
95f0d0d2 | 8943 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8944 | insn_offset += 4; |
8945 | ||
8946 | insn = *stub++; | |
8947 | insn |= relocation & 0xffff; | |
95f0d0d2 | 8948 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8949 | insn_offset += 4; |
8950 | size -= 2; | |
8951 | ||
8952 | while (size != 0) | |
8953 | { | |
8954 | insn = *stub++; | |
8955 | --size; | |
95f0d0d2 | 8956 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8957 | insn_offset += 4; |
8958 | } | |
9bc4e62b NS |
8959 | |
8960 | /* Rewrite the reloc and convert one of the trailing nop | |
8961 | relocs to describe this relocation. */ | |
8962 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
8963 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
8964 | wrel->r_offset = rel->r_offset + d_offset; |
8965 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
8966 | wrel->r_addend = rel->r_addend; | |
8967 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
8968 | wrel++, rel++; | |
8969 | wrel->r_offset += 4; | |
8970 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 8971 | } |
8517fae7 | 8972 | continue; |
deaaf2f3 | 8973 | |
70bccea4 | 8974 | /* Indirect .sdata relocation. */ |
7619e7c7 | 8975 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 8976 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
8977 | if (!is_static_defined (htab->sdata[0].sym)) |
8978 | { | |
8979 | unresolved_reloc = TRUE; | |
8980 | break; | |
8981 | } | |
7619e7c7 | 8982 | relocation |
76750a2f AM |
8983 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
8984 | h, relocation, rel); | |
bd6c6e2b | 8985 | addend = 0; |
252b5132 RH |
8986 | break; |
8987 | ||
70bccea4 | 8988 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 8989 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 8990 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
8991 | if (!is_static_defined (htab->sdata[1].sym)) |
8992 | { | |
8993 | unresolved_reloc = TRUE; | |
8994 | break; | |
8995 | } | |
7619e7c7 | 8996 | relocation |
76750a2f AM |
8997 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
8998 | h, relocation, rel); | |
bd6c6e2b | 8999 | addend = 0; |
252b5132 RH |
9000 | break; |
9001 | ||
70bccea4 AM |
9002 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
9003 | section, not the actual VMA. This is appropriate when generating | |
9004 | an embedded ELF object, for which the .got section acts like the | |
9005 | AIX .toc section. */ | |
7619e7c7 | 9006 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
9007 | if (sec == NULL || sec->output_section == NULL) |
9008 | { | |
9009 | unresolved_reloc = TRUE; | |
9010 | break; | |
9011 | } | |
a0f49396 NC |
9012 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
9013 | ".got") == 0 | |
9014 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
9015 | ".cgot") == 0); | |
252b5132 | 9016 | |
3b4f3a11 | 9017 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
9018 | break; |
9019 | ||
7619e7c7 | 9020 | case R_PPC_PLTREL24: |
f75e0e33 AM |
9021 | if (h != NULL && ifunc == NULL) |
9022 | { | |
cbf95972 AM |
9023 | struct plt_entry *ent; |
9024 | ||
9025 | ent = find_plt_ent (&h->plt.plist, got2, | |
9026 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 | 9027 | if (ent == NULL |
ce558b89 | 9028 | || htab->elf.splt == NULL) |
f75e0e33 AM |
9029 | { |
9030 | /* We didn't make a PLT entry for this symbol. This | |
9031 | happens when statically linking PIC code, or when | |
9032 | using -Bsymbolic. */ | |
9033 | } | |
9034 | else | |
9035 | { | |
9036 | /* Relocation is to the entry for this symbol in the | |
9037 | procedure linkage table. */ | |
9038 | unresolved_reloc = FALSE; | |
9039 | if (htab->plt_type == PLT_NEW) | |
9040 | relocation = (htab->glink->output_section->vma | |
9041 | + htab->glink->output_offset | |
9042 | + ent->glink_offset); | |
9043 | else | |
ce558b89 AM |
9044 | relocation = (htab->elf.splt->output_section->vma |
9045 | + htab->elf.splt->output_offset | |
f75e0e33 AM |
9046 | + ent->plt.offset); |
9047 | } | |
9048 | } | |
252b5132 | 9049 | |
f75e0e33 AM |
9050 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
9051 | addend specifies the GOT pointer offset within .got2. | |
9052 | Don't apply it to the relocation field. */ | |
9053 | addend = 0; | |
8da6118f | 9054 | break; |
252b5132 | 9055 | |
70bccea4 | 9056 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 9057 | case R_PPC_SDAREL16: |
252b5132 RH |
9058 | { |
9059 | const char *name; | |
bd6c6e2b | 9060 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 9061 | |
bd6c6e2b AM |
9062 | if (sec == NULL |
9063 | || sec->output_section == NULL | |
9064 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9065 | { |
9066 | unresolved_reloc = TRUE; | |
9067 | break; | |
9068 | } | |
bd6c6e2b | 9069 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9070 | |
a0f49396 | 9071 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9072 | if (!(strcmp (name, ".sdata") == 0 |
9073 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 9074 | { |
25f53a85 | 9075 | info->callbacks->einfo |
695344c0 | 9076 | /* xgettext:c-format */ |
8de848d8 | 9077 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9078 | "in the wrong output section (%s)\n"), |
d003868e | 9079 | input_bfd, |
55fd94b0 AM |
9080 | sym_name, |
9081 | howto->name, | |
9082 | name); | |
252b5132 | 9083 | } |
252b5132 RH |
9084 | } |
9085 | break; | |
9086 | ||
70bccea4 | 9087 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 9088 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
9089 | { |
9090 | const char *name; | |
bd6c6e2b | 9091 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 9092 | |
bd6c6e2b AM |
9093 | if (sec == NULL |
9094 | || sec->output_section == NULL | |
9095 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
9096 | { |
9097 | unresolved_reloc = TRUE; | |
9098 | break; | |
9099 | } | |
bd6c6e2b | 9100 | addend -= SYM_VAL (sda); |
3b4f3a11 | 9101 | |
a0f49396 | 9102 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9103 | if (!(strcmp (name, ".sdata2") == 0 |
9104 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 9105 | { |
25f53a85 | 9106 | info->callbacks->einfo |
695344c0 | 9107 | /* xgettext:c-format */ |
8de848d8 | 9108 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9109 | "in the wrong output section (%s)\n"), |
d003868e | 9110 | input_bfd, |
55fd94b0 AM |
9111 | sym_name, |
9112 | howto->name, | |
9113 | name); | |
252b5132 | 9114 | } |
252b5132 RH |
9115 | } |
9116 | break; | |
9117 | ||
b9c361e0 | 9118 | case R_PPC_VLE_LO16A: |
86c95733 | 9119 | relocation = relocation + addend; |
08dc996f AM |
9120 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9121 | contents + rel->r_offset, relocation, | |
9122 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9123 | goto copy_reloc; |
b9c361e0 JL |
9124 | |
9125 | case R_PPC_VLE_LO16D: | |
86c95733 | 9126 | relocation = relocation + addend; |
08dc996f AM |
9127 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9128 | contents + rel->r_offset, relocation, | |
9129 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9130 | goto copy_reloc; |
b9c361e0 JL |
9131 | |
9132 | case R_PPC_VLE_HI16A: | |
86c95733 | 9133 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9134 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9135 | contents + rel->r_offset, relocation, | |
9136 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9137 | goto copy_reloc; |
b9c361e0 JL |
9138 | |
9139 | case R_PPC_VLE_HI16D: | |
86c95733 | 9140 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
9141 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9142 | contents + rel->r_offset, relocation, | |
9143 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9144 | goto copy_reloc; |
b9c361e0 JL |
9145 | |
9146 | case R_PPC_VLE_HA16A: | |
86c95733 | 9147 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9148 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9149 | contents + rel->r_offset, relocation, | |
9150 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9151 | goto copy_reloc; |
b9c361e0 JL |
9152 | |
9153 | case R_PPC_VLE_HA16D: | |
86c95733 | 9154 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
9155 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9156 | contents + rel->r_offset, relocation, | |
9157 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 9158 | goto copy_reloc; |
b9c361e0 | 9159 | |
70bccea4 | 9160 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 9161 | case R_PPC_EMB_SDA21: |
b9c361e0 | 9162 | case R_PPC_VLE_SDA21: |
7619e7c7 | 9163 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 9164 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
9165 | { |
9166 | const char *name; | |
9167 | int reg; | |
86c95733 | 9168 | unsigned int insn; |
bd6c6e2b | 9169 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 9170 | |
3b4f3a11 AM |
9171 | if (sec == NULL || sec->output_section == NULL) |
9172 | { | |
9173 | unresolved_reloc = TRUE; | |
9174 | break; | |
9175 | } | |
9176 | ||
a0f49396 | 9177 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9178 | if (strcmp (name, ".sdata") == 0 |
9179 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
9180 | { |
9181 | reg = 13; | |
bd6c6e2b | 9182 | sda = htab->sdata[0].sym; |
252b5132 | 9183 | } |
93d1b056 AM |
9184 | else if (strcmp (name, ".sdata2") == 0 |
9185 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
9186 | { |
9187 | reg = 2; | |
bd6c6e2b | 9188 | sda = htab->sdata[1].sym; |
252b5132 | 9189 | } |
8da6118f KH |
9190 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
9191 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
9192 | { |
9193 | reg = 0; | |
9194 | } | |
252b5132 RH |
9195 | else |
9196 | { | |
25f53a85 | 9197 | info->callbacks->einfo |
695344c0 | 9198 | /* xgettext:c-format */ |
8de848d8 | 9199 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 9200 | "in the wrong output section (%s)\n"), |
d003868e | 9201 | input_bfd, |
55fd94b0 AM |
9202 | sym_name, |
9203 | howto->name, | |
9204 | name); | |
252b5132 RH |
9205 | |
9206 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9207 | ret = FALSE; |
c316a17c | 9208 | goto copy_reloc; |
252b5132 RH |
9209 | } |
9210 | ||
bd6c6e2b AM |
9211 | if (sda != NULL) |
9212 | { | |
9213 | if (!is_static_defined (sda)) | |
9214 | { | |
9215 | unresolved_reloc = TRUE; | |
9216 | break; | |
9217 | } | |
9218 | addend -= SYM_VAL (sda); | |
9219 | } | |
9220 | ||
95f0d0d2 | 9221 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
b9c361e0 JL |
9222 | if (reg == 0 |
9223 | && (r_type == R_PPC_VLE_SDA21 | |
9224 | || r_type == R_PPC_VLE_SDA21_LO)) | |
9225 | { | |
86c95733 AM |
9226 | relocation = relocation + addend; |
9227 | addend = 0; | |
9228 | ||
9229 | /* Force e_li insn, keeping RT from original insn. */ | |
9230 | insn &= 0x1f << 21; | |
9231 | insn |= 28u << 26; | |
9232 | ||
9233 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
9234 | /* Top 4 bits of value to 17..20. */ | |
9235 | insn |= (relocation & 0xf0000) >> 5; | |
9236 | /* Next 5 bits of the value to 11..15. */ | |
9237 | insn |= (relocation & 0xf800) << 5; | |
9238 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
9239 | insn |= relocation & 0x7ff; | |
9240 | ||
95f0d0d2 | 9241 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
c3301df1 AM |
9242 | |
9243 | if (r_type == R_PPC_VLE_SDA21 | |
9244 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
9245 | goto overflow; | |
c316a17c | 9246 | goto copy_reloc; |
b9c361e0 JL |
9247 | } |
9248 | else if (r_type == R_PPC_EMB_SDA21 | |
9249 | || r_type == R_PPC_VLE_SDA21 | |
9250 | || r_type == R_PPC_VLE_SDA21_LO) | |
91d6fa6a | 9251 | { |
86c95733 | 9252 | /* Fill in register field. */ |
252b5132 | 9253 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
252b5132 | 9254 | } |
95f0d0d2 | 9255 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
9256 | } |
9257 | break; | |
9258 | ||
b9c361e0 JL |
9259 | case R_PPC_VLE_SDAREL_LO16A: |
9260 | case R_PPC_VLE_SDAREL_LO16D: | |
9261 | case R_PPC_VLE_SDAREL_HI16A: | |
9262 | case R_PPC_VLE_SDAREL_HI16D: | |
9263 | case R_PPC_VLE_SDAREL_HA16A: | |
9264 | case R_PPC_VLE_SDAREL_HA16D: | |
9265 | { | |
9266 | bfd_vma value; | |
9267 | const char *name; | |
b9c361e0 JL |
9268 | struct elf_link_hash_entry *sda = NULL; |
9269 | ||
9270 | if (sec == NULL || sec->output_section == NULL) | |
9271 | { | |
9272 | unresolved_reloc = TRUE; | |
9273 | break; | |
9274 | } | |
9275 | ||
a0f49396 | 9276 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
9277 | if (strcmp (name, ".sdata") == 0 |
9278 | || strcmp (name, ".sbss") == 0) | |
5499c7c7 | 9279 | sda = htab->sdata[0].sym; |
93d1b056 AM |
9280 | else if (strcmp (name, ".sdata2") == 0 |
9281 | || strcmp (name, ".sbss2") == 0) | |
5499c7c7 | 9282 | sda = htab->sdata[1].sym; |
b9c361e0 JL |
9283 | else |
9284 | { | |
4eca0228 | 9285 | _bfd_error_handler |
695344c0 | 9286 | /* xgettext:c-format */ |
b9c361e0 JL |
9287 | (_("%B: the target (%s) of a %s relocation is " |
9288 | "in the wrong output section (%s)"), | |
9289 | input_bfd, | |
9290 | sym_name, | |
9291 | howto->name, | |
9292 | name); | |
9293 | ||
9294 | bfd_set_error (bfd_error_bad_value); | |
9295 | ret = FALSE; | |
c316a17c | 9296 | goto copy_reloc; |
b9c361e0 JL |
9297 | } |
9298 | ||
5499c7c7 | 9299 | if (sda == NULL || !is_static_defined (sda)) |
b9c361e0 | 9300 | { |
5499c7c7 AM |
9301 | unresolved_reloc = TRUE; |
9302 | break; | |
b9c361e0 | 9303 | } |
5499c7c7 | 9304 | value = relocation + addend - SYM_VAL (sda); |
86c95733 AM |
9305 | |
9306 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
08dc996f AM |
9307 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9308 | contents + rel->r_offset, value, | |
9309 | split16a_type, | |
9310 | htab->params->vle_reloc_fixup); | |
86c95733 | 9311 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) |
08dc996f AM |
9312 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9313 | contents + rel->r_offset, value, | |
9314 | split16d_type, | |
9315 | htab->params->vle_reloc_fixup); | |
86c95733 | 9316 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) |
b9c361e0 | 9317 | { |
86c95733 | 9318 | value = value >> 16; |
08dc996f AM |
9319 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9320 | contents + rel->r_offset, value, | |
9321 | split16a_type, | |
9322 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9323 | } |
86c95733 | 9324 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 9325 | { |
86c95733 | 9326 | value = value >> 16; |
08dc996f AM |
9327 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9328 | contents + rel->r_offset, value, | |
9329 | split16d_type, | |
9330 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9331 | } |
86c95733 | 9332 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 9333 | { |
86c95733 | 9334 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9335 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9336 | contents + rel->r_offset, value, | |
9337 | split16a_type, | |
9338 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 9339 | } |
86c95733 | 9340 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 9341 | { |
86c95733 | 9342 | value = (value + 0x8000) >> 16; |
08dc996f AM |
9343 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
9344 | contents + rel->r_offset, value, | |
9345 | split16d_type, | |
9346 | htab->params->vle_reloc_fixup); | |
b9c361e0 JL |
9347 | } |
9348 | } | |
c316a17c | 9349 | goto copy_reloc; |
b9c361e0 | 9350 | |
83eef883 AFB |
9351 | case R_PPC_VLE_ADDR20: |
9352 | ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation); | |
9353 | continue; | |
9354 | ||
70bccea4 | 9355 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
9356 | case R_PPC_SECTOFF: |
9357 | case R_PPC_SECTOFF_LO: | |
9358 | case R_PPC_SECTOFF_HI: | |
9359 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
9360 | if (sec == NULL || sec->output_section == NULL) |
9361 | { | |
9362 | unresolved_reloc = TRUE; | |
9363 | break; | |
9364 | } | |
252b5132 | 9365 | addend -= sec->output_section->vma; |
252b5132 RH |
9366 | break; |
9367 | ||
70bccea4 | 9368 | /* Negative relocations. */ |
7619e7c7 AM |
9369 | case R_PPC_EMB_NADDR32: |
9370 | case R_PPC_EMB_NADDR16: | |
9371 | case R_PPC_EMB_NADDR16_LO: | |
9372 | case R_PPC_EMB_NADDR16_HI: | |
9373 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 9374 | addend -= 2 * relocation; |
252b5132 RH |
9375 | break; |
9376 | ||
7619e7c7 AM |
9377 | case R_PPC_COPY: |
9378 | case R_PPC_GLOB_DAT: | |
9379 | case R_PPC_JMP_SLOT: | |
9380 | case R_PPC_RELATIVE: | |
e054468f | 9381 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
9382 | case R_PPC_PLT32: |
9383 | case R_PPC_PLTREL32: | |
9384 | case R_PPC_PLT16_LO: | |
9385 | case R_PPC_PLT16_HI: | |
9386 | case R_PPC_PLT16_HA: | |
9387 | case R_PPC_ADDR30: | |
9388 | case R_PPC_EMB_RELSEC16: | |
9389 | case R_PPC_EMB_RELST_LO: | |
9390 | case R_PPC_EMB_RELST_HI: | |
9391 | case R_PPC_EMB_RELST_HA: | |
9392 | case R_PPC_EMB_BIT_FLD: | |
25f53a85 | 9393 | info->callbacks->einfo |
695344c0 | 9394 | /* xgettext:c-format */ |
8de848d8 | 9395 | (_("%P: %B: relocation %s is not yet supported for symbol %s\n"), |
d003868e | 9396 | input_bfd, |
7619e7c7 AM |
9397 | howto->name, |
9398 | sym_name); | |
252b5132 RH |
9399 | |
9400 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9401 | ret = FALSE; |
c316a17c | 9402 | goto copy_reloc; |
7619e7c7 | 9403 | } |
252b5132 | 9404 | |
7619e7c7 AM |
9405 | /* Do any further special processing. */ |
9406 | switch (r_type) | |
9407 | { | |
9408 | default: | |
9409 | break; | |
9410 | ||
9411 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 9412 | case R_PPC_REL16_HA: |
a680de9a | 9413 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
9414 | case R_PPC_SECTOFF_HA: |
9415 | case R_PPC_TPREL16_HA: | |
9416 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
9417 | case R_PPC_EMB_NADDR16_HA: |
9418 | case R_PPC_EMB_RELST_HA: | |
9419 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 9420 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
9421 | 'sec' would be NULL, and we should leave the symbol |
9422 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
9423 | if (sec == NULL) |
9424 | break; | |
1a0670f3 | 9425 | /* Fall through. */ |
5c5f6e17 AM |
9426 | |
9427 | case R_PPC_PLT16_HA: | |
9428 | case R_PPC_GOT16_HA: | |
9429 | case R_PPC_GOT_TLSGD16_HA: | |
9430 | case R_PPC_GOT_TLSLD16_HA: | |
9431 | case R_PPC_GOT_TPREL16_HA: | |
9432 | case R_PPC_GOT_DTPREL16_HA: | |
9433 | /* Add 0x10000 if sign bit in 0:15 is set. | |
9434 | Bits 0:15 are not used. */ | |
9435 | addend += 0x8000; | |
7619e7c7 | 9436 | break; |
1fe532cf AM |
9437 | |
9438 | case R_PPC_ADDR16: | |
9439 | case R_PPC_ADDR16_LO: | |
9440 | case R_PPC_GOT16: | |
9441 | case R_PPC_GOT16_LO: | |
9442 | case R_PPC_SDAREL16: | |
9443 | case R_PPC_SECTOFF: | |
9444 | case R_PPC_SECTOFF_LO: | |
9445 | case R_PPC_DTPREL16: | |
9446 | case R_PPC_DTPREL16_LO: | |
9447 | case R_PPC_TPREL16: | |
9448 | case R_PPC_TPREL16_LO: | |
9449 | case R_PPC_GOT_TLSGD16: | |
9450 | case R_PPC_GOT_TLSGD16_LO: | |
9451 | case R_PPC_GOT_TLSLD16: | |
9452 | case R_PPC_GOT_TLSLD16_LO: | |
9453 | case R_PPC_GOT_DTPREL16: | |
9454 | case R_PPC_GOT_DTPREL16_LO: | |
9455 | case R_PPC_GOT_TPREL16: | |
9456 | case R_PPC_GOT_TPREL16_LO: | |
9457 | { | |
9458 | /* The 32-bit ABI lacks proper relocations to deal with | |
9459 | certain 64-bit instructions. Prevent damage to bits | |
9460 | that make up part of the insn opcode. */ | |
9461 | unsigned int insn, mask, lobit; | |
9462 | ||
95f0d0d2 | 9463 | insn = bfd_get_32 (input_bfd, |
c316a17c | 9464 | contents + rel->r_offset - d_offset); |
1fe532cf AM |
9465 | mask = 0; |
9466 | if (is_insn_ds_form (insn)) | |
9467 | mask = 3; | |
9468 | else if (is_insn_dq_form (insn)) | |
9469 | mask = 15; | |
9470 | else | |
9471 | break; | |
a680de9a PB |
9472 | relocation += addend; |
9473 | addend = insn & mask; | |
9474 | lobit = mask & relocation; | |
1fe532cf AM |
9475 | if (lobit != 0) |
9476 | { | |
a680de9a | 9477 | relocation ^= lobit; |
1fe532cf | 9478 | info->callbacks->einfo |
695344c0 | 9479 | /* xgettext:c-format */ |
174d0a74 | 9480 | (_("%H: error: %s against `%s' not a multiple of %u\n"), |
1fe532cf AM |
9481 | input_bfd, input_section, rel->r_offset, |
9482 | howto->name, sym_name, mask + 1); | |
9483 | bfd_set_error (bfd_error_bad_value); | |
9484 | ret = FALSE; | |
9485 | } | |
1fe532cf AM |
9486 | } |
9487 | break; | |
252b5132 RH |
9488 | } |
9489 | ||
252b5132 | 9490 | #ifdef DEBUG |
55fd94b0 AM |
9491 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
9492 | "offset = %ld, addend = %ld\n", | |
252b5132 | 9493 | howto->name, |
8da6118f | 9494 | (int) r_type, |
252b5132 RH |
9495 | sym_name, |
9496 | r_symndx, | |
7619e7c7 | 9497 | (long) rel->r_offset, |
8da6118f | 9498 | (long) addend); |
252b5132 RH |
9499 | #endif |
9500 | ||
7619e7c7 AM |
9501 | if (unresolved_reloc |
9502 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
9503 | && h->def_dynamic) |
9504 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
9505 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 9506 | { |
25f53a85 | 9507 | info->callbacks->einfo |
695344c0 | 9508 | /* xgettext:c-format */ |
174d0a74 | 9509 | (_("%H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 9510 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9511 | howto->name, |
7619e7c7 AM |
9512 | sym_name); |
9513 | ret = FALSE; | |
9514 | } | |
9515 | ||
86c95733 AM |
9516 | /* 16-bit fields in insns mostly have signed values, but a |
9517 | few insns have 16-bit unsigned values. Really, we should | |
9518 | have different reloc types. */ | |
9519 | if (howto->complain_on_overflow != complain_overflow_dont | |
9520 | && howto->dst_mask == 0xffff | |
9521 | && (input_section->flags & SEC_CODE) != 0) | |
9522 | { | |
9523 | enum complain_overflow complain = complain_overflow_signed; | |
9524 | ||
9525 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9526 | { | |
9527 | unsigned int insn; | |
9528 | ||
9529 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
9530 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9531 | complain = complain_overflow_bitfield; | |
9532 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9533 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9534 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9535 | complain = complain_overflow_unsigned; |
9536 | } | |
9537 | if (howto->complain_on_overflow != complain) | |
9538 | { | |
9539 | alt_howto = *howto; | |
9540 | alt_howto.complain_on_overflow = complain; | |
9541 | howto = &alt_howto; | |
9542 | } | |
9543 | } | |
9544 | ||
a680de9a PB |
9545 | if (r_type == R_PPC_REL16DX_HA) |
9546 | { | |
9547 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
9548 | if (rel->r_offset + 4 > input_section->size) | |
9549 | r = bfd_reloc_outofrange; | |
9550 | else | |
9551 | { | |
9552 | unsigned int insn; | |
9553 | ||
9554 | relocation += addend; | |
9555 | relocation -= (rel->r_offset | |
9556 | + input_section->output_offset | |
9557 | + input_section->output_section->vma); | |
9558 | relocation >>= 16; | |
9559 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9560 | insn &= ~0x1fffc1; | |
9561 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
9562 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9563 | r = bfd_reloc_ok; | |
9564 | } | |
9565 | } | |
9566 | else | |
9567 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9568 | rel->r_offset, relocation, addend); | |
252b5132 | 9569 | |
7619e7c7 | 9570 | if (r != bfd_reloc_ok) |
252b5132 | 9571 | { |
7619e7c7 | 9572 | if (r == bfd_reloc_overflow) |
252b5132 | 9573 | { |
c3301df1 | 9574 | overflow: |
8131c122 AM |
9575 | /* On code like "if (foo) foo();" don't report overflow |
9576 | on a branch to zero when foo is undefined. */ | |
9577 | if (!warned | |
9578 | && !(h != NULL | |
9579 | && (h->root.type == bfd_link_hash_undefweak | |
9580 | || h->root.type == bfd_link_hash_undefined) | |
9581 | && is_branch_reloc (r_type))) | |
1a72702b AM |
9582 | info->callbacks->reloc_overflow |
9583 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
9584 | rel->r_addend, input_bfd, input_section, rel->r_offset); | |
dc1bc0c9 RH |
9585 | } |
9586 | else | |
9587 | { | |
25f53a85 | 9588 | info->callbacks->einfo |
695344c0 | 9589 | /* xgettext:c-format */ |
174d0a74 | 9590 | (_("%H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9591 | input_bfd, input_section, rel->r_offset, |
9592 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9593 | ret = FALSE; |
252b5132 RH |
9594 | } |
9595 | } | |
c316a17c AM |
9596 | copy_reloc: |
9597 | if (wrel != rel) | |
9598 | *wrel = *rel; | |
9599 | } | |
9600 | ||
9601 | if (wrel != rel) | |
9602 | { | |
9603 | Elf_Internal_Shdr *rel_hdr; | |
9604 | size_t deleted = rel - wrel; | |
9605 | ||
9606 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
9607 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9608 | if (rel_hdr->sh_size == 0) | |
9609 | { | |
9610 | /* It is too late to remove an empty reloc section. Leave | |
9611 | one NONE reloc. | |
9612 | ??? What is wrong with an empty section??? */ | |
9613 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
9614 | deleted -= 1; | |
9615 | wrel++; | |
9616 | } | |
9617 | relend = wrel; | |
9618 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
9619 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9620 | input_section->reloc_count -= deleted; | |
252b5132 RH |
9621 | } |
9622 | ||
252b5132 RH |
9623 | #ifdef DEBUG |
9624 | fprintf (stderr, "\n"); | |
9625 | #endif | |
9626 | ||
53291d1f AM |
9627 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9628 | && input_section->size != input_section->rawsize | |
9629 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9630 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9631 | { | |
9632 | /* Branch around the trampolines. */ | |
9633 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9634 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9635 | } | |
9636 | ||
5446cbdf | 9637 | if (htab->params->ppc476_workaround |
795bc6b3 | 9638 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 9639 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
9640 | || (input_section->output_section->alignment_power |
9641 | >= htab->params->pagesize_p2))) | |
5446cbdf | 9642 | { |
5446cbdf | 9643 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 9644 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 9645 | |
5446cbdf | 9646 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
9647 | { |
9648 | bfd_byte *p; | |
9649 | unsigned int n; | |
9650 | bfd_byte fill[4]; | |
9651 | ||
9652 | bfd_put_32 (input_bfd, BA, fill); | |
9653 | p = contents + input_section->size - relax_info->workaround_size; | |
9654 | n = relax_info->workaround_size >> 2; | |
9655 | while (n--) | |
9656 | { | |
9657 | memcpy (p, fill, 4); | |
9658 | p += 4; | |
9659 | } | |
9660 | } | |
5446cbdf AM |
9661 | |
9662 | /* The idea is: Replace the last instruction on a page with a | |
9663 | branch to a patch area. Put the insn there followed by a | |
9664 | branch back to the next page. Complicated a little by | |
9665 | needing to handle moved conditional branches, and by not | |
9666 | wanting to touch data-in-text. */ | |
9667 | ||
9668 | start_addr = (input_section->output_section->vma | |
9669 | + input_section->output_offset); | |
9670 | end_addr = (start_addr + input_section->size | |
9671 | - relax_info->workaround_size); | |
9672 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9673 | addr < end_addr; | |
9674 | addr += pagesize) | |
9675 | { | |
9676 | bfd_vma offset = addr - start_addr; | |
9677 | Elf_Internal_Rela *lo, *hi; | |
9678 | bfd_boolean is_data; | |
9679 | bfd_vma patch_off, patch_addr; | |
9680 | unsigned int insn; | |
9681 | ||
9682 | /* Do we have a data reloc at this offset? If so, leave | |
9683 | the word alone. */ | |
9684 | is_data = FALSE; | |
9685 | lo = relocs; | |
668e22e5 AM |
9686 | hi = relend; |
9687 | rel = NULL; | |
5446cbdf AM |
9688 | while (lo < hi) |
9689 | { | |
9690 | rel = lo + (hi - lo) / 2; | |
9691 | if (rel->r_offset < offset) | |
9692 | lo = rel + 1; | |
668e22e5 | 9693 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9694 | hi = rel; |
9695 | else | |
9696 | { | |
9697 | switch (ELF32_R_TYPE (rel->r_info)) | |
9698 | { | |
9699 | case R_PPC_ADDR32: | |
9700 | case R_PPC_UADDR32: | |
9701 | case R_PPC_REL32: | |
9702 | case R_PPC_ADDR30: | |
9703 | is_data = TRUE; | |
9704 | break; | |
9705 | default: | |
9706 | break; | |
9707 | } | |
9708 | break; | |
9709 | } | |
9710 | } | |
9711 | if (is_data) | |
9712 | continue; | |
9713 | ||
b4ab4364 AM |
9714 | /* Some instructions can be left alone too. Unconditional |
9715 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9716 | avoid the icache failure. | |
9717 | ||
9718 | The problem occurs due to prefetch across a page boundary | |
9719 | where stale instructions can be fetched from the next | |
9720 | page, and the mechanism for flushing these bad | |
9721 | instructions fails under certain circumstances. The | |
9722 | unconditional branches: | |
9723 | 1) Branch: b, bl, ba, bla, | |
9724 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9725 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9726 | where (2) and (3) have BO=0x14 making them unconditional, | |
9727 | prevent the bad prefetch because the prefetch itself is | |
9728 | affected by these instructions. This happens even if the | |
9729 | instruction is not executed. | |
9730 | ||
9731 | A bctr example: | |
9732 | . | |
9733 | . lis 9,new_page@ha | |
9734 | . addi 9,9,new_page@l | |
9735 | . mtctr 9 | |
9736 | . bctr | |
9737 | . nop | |
9738 | . nop | |
9739 | . new_page: | |
9740 | . | |
9741 | The bctr is not predicted taken due to ctr not being | |
9742 | ready, so prefetch continues on past the bctr into the | |
9743 | new page which might have stale instructions. If they | |
9744 | fail to be flushed, then they will be executed after the | |
9745 | bctr executes. Either of the following modifications | |
9746 | prevent the bad prefetch from happening in the first | |
9747 | place: | |
9748 | . | |
1b786873 L |
9749 | . lis 9,new_page@ha lis 9,new_page@ha |
9750 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9751 | . mtctr 9 mtctr 9 | |
9752 | . bctr bctr | |
b4ab4364 | 9753 | . nop b somewhere_else |
1b786873 L |
9754 | . b somewhere_else nop |
9755 | . new_page: new_page: | |
b4ab4364 | 9756 | . */ |
5446cbdf | 9757 | insn = bfd_get_32 (input_bfd, contents + offset); |
07d6d2b8 AM |
9758 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9759 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
9760 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 9761 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 | 9762 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
07d6d2b8 | 9763 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ |
5446cbdf AM |
9764 | continue; |
9765 | ||
9766 | patch_addr = (start_addr + input_section->size | |
9767 | - relax_info->workaround_size); | |
9768 | patch_addr = (patch_addr + 15) & -16; | |
9769 | patch_off = patch_addr - start_addr; | |
9770 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9771 | |
9772 | if (rel != NULL | |
9773 | && rel->r_offset >= offset | |
9774 | && rel->r_offset < offset + 4) | |
9775 | { | |
f8b44781 AM |
9776 | asection *sreloc; |
9777 | ||
668e22e5 AM |
9778 | /* If the insn we are patching had a reloc, adjust the |
9779 | reloc r_offset so that the reloc applies to the moved | |
9780 | location. This matters for -r and --emit-relocs. */ | |
9781 | if (rel + 1 != relend) | |
9782 | { | |
9783 | Elf_Internal_Rela tmp = *rel; | |
9784 | ||
9785 | /* Keep the relocs sorted by r_offset. */ | |
9786 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9787 | relend[-1] = tmp; | |
9788 | } | |
9789 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
9790 | |
9791 | /* Adjust REL16 addends too. */ | |
9792 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
9793 | { | |
9794 | case R_PPC_REL16: | |
9795 | case R_PPC_REL16_LO: | |
9796 | case R_PPC_REL16_HI: | |
9797 | case R_PPC_REL16_HA: | |
9798 | relend[-1].r_addend += patch_off - offset; | |
9799 | break; | |
9800 | default: | |
9801 | break; | |
9802 | } | |
9803 | ||
9804 | /* If we are building a PIE or shared library with | |
9805 | non-PIC objects, perhaps we had a dynamic reloc too? | |
9806 | If so, the dynamic reloc must move with the insn. */ | |
9807 | sreloc = elf_section_data (input_section)->sreloc; | |
9808 | if (sreloc != NULL) | |
9809 | { | |
1d5c94cb | 9810 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
9811 | bfd_vma soffset; |
9812 | ||
1d5c94cb AM |
9813 | slo = (Elf32_External_Rela *) sreloc->contents; |
9814 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
9815 | soffset = (offset + input_section->output_section->vma |
9816 | + input_section->output_offset); | |
9817 | while (slo < shi) | |
9818 | { | |
1d5c94cb AM |
9819 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
9820 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
9821 | &outrel); | |
f8b44781 AM |
9822 | if (outrel.r_offset < soffset) |
9823 | slo = srel + 1; | |
9824 | else if (outrel.r_offset > soffset + 3) | |
9825 | shi = srel; | |
9826 | else | |
9827 | { | |
1d5c94cb | 9828 | if (srel + 1 != srelend) |
f8b44781 | 9829 | { |
1d5c94cb AM |
9830 | memmove (srel, srel + 1, |
9831 | (srelend - (srel + 1)) * sizeof (*srel)); | |
9832 | srel = srelend - 1; | |
f8b44781 AM |
9833 | } |
9834 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
9835 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
9836 | (bfd_byte *) srel); | |
f8b44781 AM |
9837 | break; |
9838 | } | |
9839 | } | |
9840 | } | |
668e22e5 AM |
9841 | } |
9842 | else | |
9843 | rel = NULL; | |
9844 | ||
5446cbdf AM |
9845 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
9846 | && (insn & 2) == 0 /* relative */) | |
9847 | { | |
9848 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9849 | ||
9850 | delta += offset - patch_off; | |
0e1862bb | 9851 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 9852 | delta = 0; |
0e1862bb | 9853 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
9854 | { |
9855 | enum elf_ppc_reloc_type r_type; | |
9856 | ||
9857 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9858 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9859 | insn |= BRANCH_PREDICT_BIT; | |
9860 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9861 | insn &= ~BRANCH_PREDICT_BIT; | |
9862 | else | |
9863 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9864 | ||
9865 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9866 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9867 | && delta + 0x8000 < 0x10000 | |
9868 | && (bfd_signed_vma) delta < 0) | |
9869 | insn ^= BRANCH_PREDICT_BIT; | |
9870 | } | |
5446cbdf AM |
9871 | if (delta + 0x8000 < 0x10000) |
9872 | { | |
9873 | bfd_put_32 (input_bfd, | |
9874 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9875 | contents + patch_off); | |
9876 | patch_off += 4; | |
9877 | bfd_put_32 (input_bfd, | |
9878 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9879 | contents + patch_off); | |
9880 | patch_off += 4; | |
9881 | } | |
9882 | else | |
9883 | { | |
668e22e5 AM |
9884 | if (rel != NULL) |
9885 | { | |
9886 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9887 | ||
9888 | relend[-1].r_offset += 8; | |
9889 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9890 | } | |
5446cbdf AM |
9891 | bfd_put_32 (input_bfd, |
9892 | (insn & ~0xfffc) | 8, | |
9893 | contents + patch_off); | |
9894 | patch_off += 4; | |
9895 | bfd_put_32 (input_bfd, | |
9896 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9897 | contents + patch_off); | |
9898 | patch_off += 4; | |
9899 | bfd_put_32 (input_bfd, | |
9900 | B | ((delta - 8) & 0x3fffffc), | |
9901 | contents + patch_off); | |
9902 | patch_off += 4; | |
9903 | } | |
9904 | } | |
9905 | else | |
9906 | { | |
9907 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9908 | patch_off += 4; | |
9909 | bfd_put_32 (input_bfd, | |
9910 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9911 | contents + patch_off); | |
9912 | patch_off += 4; | |
9913 | } | |
9914 | BFD_ASSERT (patch_off <= input_section->size); | |
9915 | relax_info->workaround_size = input_section->size - patch_off; | |
9916 | } | |
9917 | } | |
9918 | ||
252b5132 RH |
9919 | return ret; |
9920 | } | |
252b5132 | 9921 | \f |
25dbc73a AM |
9922 | /* Finish up dynamic symbol handling. We set the contents of various |
9923 | dynamic sections here. */ | |
c5fccbec | 9924 | |
b34976b6 | 9925 | static bfd_boolean |
25dbc73a AM |
9926 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
9927 | struct bfd_link_info *info, | |
9928 | struct elf_link_hash_entry *h, | |
9929 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 9930 | { |
25dbc73a | 9931 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
9932 | struct plt_entry *ent; |
9933 | bfd_boolean doneone; | |
e1a9cb8e | 9934 | |
25dbc73a AM |
9935 | #ifdef DEBUG |
9936 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9937 | h->root.root.string); | |
9938 | #endif | |
e1a9cb8e | 9939 | |
25dbc73a AM |
9940 | htab = ppc_elf_hash_table (info); |
9941 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 9942 | |
a6aa5195 AM |
9943 | doneone = FALSE; |
9944 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9945 | if (ent->plt.offset != (bfd_vma) -1) | |
9946 | { | |
9947 | if (!doneone) | |
9948 | { | |
9949 | Elf_Internal_Rela rela; | |
9950 | bfd_byte *loc; | |
9951 | bfd_vma reloc_index; | |
e1a9cb8e | 9952 | |
e054468f | 9953 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9954 | || !htab->elf.dynamic_sections_created |
9955 | || h->dynindx == -1) | |
9d8504b1 PB |
9956 | reloc_index = ent->plt.offset / 4; |
9957 | else | |
9958 | { | |
9959 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
9960 | / htab->plt_slot_size); | |
9961 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 9962 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
9963 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
9964 | } | |
9965 | ||
a6aa5195 AM |
9966 | /* This symbol has an entry in the procedure linkage table. |
9967 | Set it up. */ | |
e054468f | 9968 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
9969 | && htab->elf.dynamic_sections_created |
9970 | && h->dynindx != -1) | |
a6aa5195 | 9971 | { |
9d8504b1 PB |
9972 | bfd_vma got_offset; |
9973 | const bfd_vma *plt_entry; | |
5b914448 | 9974 | |
9d8504b1 PB |
9975 | /* The first three entries in .got.plt are reserved. */ |
9976 | got_offset = (reloc_index + 3) * 4; | |
9977 | ||
9978 | /* Use the right PLT. */ | |
0e1862bb | 9979 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
9980 | : ppc_elf_vxworks_plt_entry; |
9981 | ||
9982 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 9983 | if (bfd_link_pic (info)) |
9d8504b1 | 9984 | { |
9d8504b1 | 9985 | bfd_put_32 (output_bfd, |
e87d4038 | 9986 | plt_entry[0] | PPC_HA (got_offset), |
ce558b89 | 9987 | htab->elf.splt->contents + ent->plt.offset + 0); |
9d8504b1 | 9988 | bfd_put_32 (output_bfd, |
e87d4038 | 9989 | plt_entry[1] | PPC_LO (got_offset), |
ce558b89 | 9990 | htab->elf.splt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
9991 | } |
9992 | else | |
9993 | { | |
e87d4038 | 9994 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 PB |
9995 | |
9996 | bfd_put_32 (output_bfd, | |
e87d4038 | 9997 | plt_entry[0] | PPC_HA (got_loc), |
ce558b89 | 9998 | htab->elf.splt->contents + ent->plt.offset + 0); |
9d8504b1 | 9999 | bfd_put_32 (output_bfd, |
e87d4038 | 10000 | plt_entry[1] | PPC_LO (got_loc), |
ce558b89 | 10001 | htab->elf.splt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
10002 | } |
10003 | ||
10004 | bfd_put_32 (output_bfd, plt_entry[2], | |
ce558b89 | 10005 | htab->elf.splt->contents + ent->plt.offset + 8); |
9d8504b1 | 10006 | bfd_put_32 (output_bfd, plt_entry[3], |
ce558b89 | 10007 | htab->elf.splt->contents + ent->plt.offset + 12); |
9d8504b1 PB |
10008 | |
10009 | /* This instruction is an immediate load. The value loaded is | |
10010 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
10011 | start of the .rela.plt section. The value is stored in the | |
10012 | low-order 16 bits of the load instruction. */ | |
10013 | /* NOTE: It appears that this is now an index rather than a | |
10014 | prescaled offset. */ | |
5b914448 | 10015 | bfd_put_32 (output_bfd, |
9d8504b1 | 10016 | plt_entry[4] | reloc_index, |
ce558b89 | 10017 | htab->elf.splt->contents + ent->plt.offset + 16); |
9d8504b1 PB |
10018 | /* This instruction is a PC-relative branch whose target is |
10019 | the start of the PLT section. The address of this branch | |
10020 | instruction is 20 bytes beyond the start of this PLT entry. | |
10021 | The address is encoded in bits 6-29, inclusive. The value | |
10022 | stored is right-shifted by two bits, permitting a 26-bit | |
10023 | offset. */ | |
5b914448 AM |
10024 | bfd_put_32 (output_bfd, |
10025 | (plt_entry[5] | |
9d8504b1 | 10026 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
ce558b89 | 10027 | htab->elf.splt->contents + ent->plt.offset + 20); |
9d8504b1 | 10028 | bfd_put_32 (output_bfd, plt_entry[6], |
ce558b89 | 10029 | htab->elf.splt->contents + ent->plt.offset + 24); |
9d8504b1 | 10030 | bfd_put_32 (output_bfd, plt_entry[7], |
ce558b89 | 10031 | htab->elf.splt->contents + ent->plt.offset + 28); |
9d8504b1 PB |
10032 | |
10033 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 10034 | the address immediately after the "bctr" instruction |
9d8504b1 | 10035 | in this PLT entry. */ |
ce558b89 AM |
10036 | bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma |
10037 | + htab->elf.splt->output_offset | |
9d8504b1 | 10038 | + ent->plt.offset + 16), |
ce558b89 | 10039 | htab->elf.sgotplt->contents + got_offset); |
9d8504b1 | 10040 | |
0e1862bb | 10041 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
10042 | { |
10043 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
10044 | loc = htab->srelplt2->contents | |
10045 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
10046 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
10047 | * sizeof (Elf32_External_Rela)); | |
10048 | ||
10049 | /* Provide the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10050 | rela.r_offset = (htab->elf.splt->output_section->vma |
10051 | + htab->elf.splt->output_offset | |
9d8504b1 | 10052 | + ent->plt.offset + 2); |
636ce3f5 | 10053 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10054 | R_PPC_ADDR16_HA); |
10055 | rela.r_addend = got_offset; | |
10056 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10057 | loc += sizeof (Elf32_External_Rela); | |
10058 | ||
10059 | /* Provide the @l relocation for the second instruction. */ | |
ce558b89 AM |
10060 | rela.r_offset = (htab->elf.splt->output_section->vma |
10061 | + htab->elf.splt->output_offset | |
9d8504b1 | 10062 | + ent->plt.offset + 6); |
636ce3f5 | 10063 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
10064 | R_PPC_ADDR16_LO); |
10065 | rela.r_addend = got_offset; | |
10066 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10067 | loc += sizeof (Elf32_External_Rela); | |
10068 | ||
10069 | /* Provide a relocation for the GOT entry corresponding to this | |
10070 | PLT slot. Point it at the middle of the .plt entry. */ | |
ce558b89 AM |
10071 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10072 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 10073 | + got_offset); |
7325306f | 10074 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
10075 | R_PPC_ADDR32); |
10076 | rela.r_addend = ent->plt.offset + 16; | |
10077 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10078 | } | |
10079 | ||
10080 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
10081 | In particular, the offset for the relocation is not the | |
10082 | address of the PLT entry for this function, as specified | |
10083 | by the ABI. Instead, the offset is set to the address of | |
10084 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
ce558b89 AM |
10085 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
10086 | + htab->elf.sgotplt->output_offset | |
9d8504b1 PB |
10087 | + got_offset); |
10088 | ||
a6aa5195 AM |
10089 | } |
10090 | else | |
10091 | { | |
ce558b89 | 10092 | asection *splt = htab->elf.splt; |
25f23106 AM |
10093 | if (!htab->elf.dynamic_sections_created |
10094 | || h->dynindx == -1) | |
ce558b89 | 10095 | splt = htab->elf.iplt; |
e054468f AM |
10096 | |
10097 | rela.r_offset = (splt->output_section->vma | |
10098 | + splt->output_offset | |
9d8504b1 | 10099 | + ent->plt.offset); |
e054468f | 10100 | if (htab->plt_type == PLT_OLD |
25f23106 AM |
10101 | || !htab->elf.dynamic_sections_created |
10102 | || h->dynindx == -1) | |
9d8504b1 PB |
10103 | { |
10104 | /* We don't need to fill in the .plt. The ppc dynamic | |
10105 | linker will fill it in. */ | |
10106 | } | |
10107 | else | |
10108 | { | |
10109 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
10110 | + htab->glink->output_section->vma | |
10111 | + htab->glink->output_offset); | |
10112 | bfd_put_32 (output_bfd, val, | |
e054468f | 10113 | splt->contents + ent->plt.offset); |
9d8504b1 | 10114 | } |
a6aa5195 | 10115 | } |
e1a9cb8e | 10116 | |
a6aa5195 | 10117 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 | 10118 | rela.r_addend = 0; |
e054468f AM |
10119 | if (!htab->elf.dynamic_sections_created |
10120 | || h->dynindx == -1) | |
10121 | { | |
10122 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
10123 | && h->def_regular | |
10124 | && (h->root.type == bfd_link_hash_defined | |
10125 | || h->root.type == bfd_link_hash_defweak)); | |
10126 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
10127 | rela.r_addend = SYM_VAL (h); | |
10128 | } | |
10129 | else | |
10130 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
e1a9cb8e | 10131 | |
25f23106 AM |
10132 | if (!htab->elf.dynamic_sections_created |
10133 | || h->dynindx == -1) | |
82e66161 AM |
10134 | { |
10135 | loc = (htab->elf.irelplt->contents | |
10136 | + (htab->elf.irelplt->reloc_count++ | |
10137 | * sizeof (Elf32_External_Rela))); | |
10138 | htab->local_ifunc_resolver = 1; | |
10139 | } | |
e054468f | 10140 | else |
82e66161 AM |
10141 | { |
10142 | loc = (htab->elf.srelplt->contents | |
10143 | + reloc_index * sizeof (Elf32_External_Rela)); | |
10144 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
10145 | htab->maybe_local_ifunc_resolver = 1; | |
10146 | } | |
a6aa5195 | 10147 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
e1a9cb8e | 10148 | |
a6aa5195 AM |
10149 | if (!h->def_regular) |
10150 | { | |
0eb4a168 AM |
10151 | /* Mark the symbol as undefined, rather than as |
10152 | defined in the .plt section. Leave the value if | |
10153 | there were any relocations where pointer equality | |
10154 | matters (this is a clue for the dynamic linker, to | |
10155 | make function pointer comparisons work between an | |
10156 | application and shared library), otherwise set it | |
10157 | to zero. */ | |
a6aa5195 | 10158 | sym->st_shndx = SHN_UNDEF; |
0eb4a168 | 10159 | if (!h->pointer_equality_needed) |
a6aa5195 | 10160 | sym->st_value = 0; |
0eb4a168 AM |
10161 | else if (!h->ref_regular_nonweak) |
10162 | { | |
625af618 AM |
10163 | /* This breaks function pointer comparisons, but |
10164 | that is better than breaking tests for a NULL | |
0eb4a168 | 10165 | function pointer. */ |
0eb4a168 AM |
10166 | sym->st_value = 0; |
10167 | } | |
a6aa5195 | 10168 | } |
de972ffa | 10169 | else if (h->type == STT_GNU_IFUNC |
0e1862bb | 10170 | && !bfd_link_pic (info)) |
de972ffa AM |
10171 | { |
10172 | /* Set the value of ifunc symbols in a non-pie | |
10173 | executable to the glink entry. This is to avoid | |
10174 | text relocations. We can't do this for ifunc in | |
10175 | allocate_dynrelocs, as we do for normal dynamic | |
10176 | function symbols with plt entries, because we need | |
10177 | to keep the original value around for the ifunc | |
10178 | relocation. */ | |
10179 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
10180 | (output_bfd, htab->glink->output_section)); | |
5b914448 AM |
10181 | sym->st_value = (ent->glink_offset |
10182 | + htab->glink->output_offset | |
de972ffa AM |
10183 | + htab->glink->output_section->vma); |
10184 | } | |
a6aa5195 AM |
10185 | doneone = TRUE; |
10186 | } | |
e1a9cb8e | 10187 | |
e054468f | 10188 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
10189 | || !htab->elf.dynamic_sections_created |
10190 | || h->dynindx == -1) | |
a6aa5195 | 10191 | { |
a7f2871e | 10192 | unsigned char *p; |
ce558b89 | 10193 | asection *splt = htab->elf.splt; |
25f23106 AM |
10194 | if (!htab->elf.dynamic_sections_created |
10195 | || h->dynindx == -1) | |
ce558b89 | 10196 | splt = htab->elf.iplt; |
e1a9cb8e | 10197 | |
a7f2871e AM |
10198 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
10199 | ||
5446cbdf | 10200 | if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
10201 | { |
10202 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
10203 | p += 4; | |
10204 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
10205 | p += 4; | |
10206 | bfd_put_32 (output_bfd, MR_0_3, p); | |
10207 | p += 4; | |
10208 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
10209 | p += 4; | |
10210 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
10211 | p += 4; | |
10212 | bfd_put_32 (output_bfd, BEQLR, p); | |
10213 | p += 4; | |
10214 | bfd_put_32 (output_bfd, MR_3_0, p); | |
10215 | p += 4; | |
10216 | bfd_put_32 (output_bfd, NOP, p); | |
10217 | p += 4; | |
10218 | } | |
10219 | ||
10220 | write_glink_stub (ent, splt, p, info); | |
e1a9cb8e | 10221 | |
0e1862bb | 10222 | if (!bfd_link_pic (info)) |
e054468f AM |
10223 | /* We only need one non-PIC glink stub. */ |
10224 | break; | |
a6aa5195 AM |
10225 | } |
10226 | else | |
10227 | break; | |
10228 | } | |
e1a9cb8e | 10229 | |
25dbc73a AM |
10230 | if (h->needs_copy) |
10231 | { | |
10232 | asection *s; | |
10233 | Elf_Internal_Rela rela; | |
10234 | bfd_byte *loc; | |
e1a9cb8e | 10235 | |
25dbc73a | 10236 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 10237 | |
25dbc73a AM |
10238 | #ifdef DEBUG |
10239 | fprintf (stderr, ", copy"); | |
10240 | #endif | |
e1a9cb8e | 10241 | |
25dbc73a | 10242 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 10243 | |
4dc4a9a5 | 10244 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 10245 | s = htab->relsbss; |
afbf7e8e | 10246 | else if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f | 10247 | s = htab->elf.sreldynrelro; |
25dbc73a | 10248 | else |
9d19e4fd | 10249 | s = htab->elf.srelbss; |
25dbc73a | 10250 | BFD_ASSERT (s != NULL); |
e1a9cb8e | 10251 | |
e87d4038 | 10252 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
10253 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
10254 | rela.r_addend = 0; | |
10255 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
10256 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10257 | } | |
e1a9cb8e | 10258 | |
25dbc73a AM |
10259 | #ifdef DEBUG |
10260 | fprintf (stderr, "\n"); | |
10261 | #endif | |
e1a9cb8e | 10262 | |
25dbc73a AM |
10263 | return TRUE; |
10264 | } | |
10265 | \f | |
10266 | static enum elf_reloc_type_class | |
7e612e98 AM |
10267 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
10268 | const asection *rel_sec, | |
10269 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 10270 | { |
7e612e98 AM |
10271 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
10272 | ||
ce558b89 | 10273 | if (rel_sec == htab->elf.irelplt) |
7e612e98 AM |
10274 | return reloc_class_ifunc; |
10275 | ||
25dbc73a AM |
10276 | switch (ELF32_R_TYPE (rela->r_info)) |
10277 | { | |
10278 | case R_PPC_RELATIVE: | |
10279 | return reloc_class_relative; | |
25dbc73a AM |
10280 | case R_PPC_JMP_SLOT: |
10281 | return reloc_class_plt; | |
10282 | case R_PPC_COPY: | |
10283 | return reloc_class_copy; | |
10284 | default: | |
10285 | return reloc_class_normal; | |
10286 | } | |
e1a9cb8e | 10287 | } |
25dbc73a AM |
10288 | \f |
10289 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 10290 | |
25dbc73a AM |
10291 | static bfd_boolean |
10292 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
10293 | struct bfd_link_info *info) | |
e1a9cb8e | 10294 | { |
25dbc73a AM |
10295 | asection *sdyn; |
10296 | struct ppc_elf_link_hash_table *htab; | |
1fe44d79 | 10297 | bfd_vma got; |
e87d4038 AM |
10298 | bfd *dynobj; |
10299 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 10300 | |
25dbc73a AM |
10301 | #ifdef DEBUG |
10302 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
10303 | #endif | |
6b0817e5 | 10304 | |
25dbc73a | 10305 | htab = ppc_elf_hash_table (info); |
ce558b89 | 10306 | dynobj = htab->elf.dynobj; |
3d4d4302 | 10307 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
e1a9cb8e | 10308 | |
1fe44d79 AM |
10309 | got = 0; |
10310 | if (htab->elf.hgot != NULL) | |
e87d4038 | 10311 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 10312 | |
25dbc73a | 10313 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 10314 | { |
25dbc73a | 10315 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 10316 | |
ce558b89 | 10317 | BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL); |
86bbe32f | 10318 | |
25dbc73a AM |
10319 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
10320 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
10321 | for (; dyncon < dynconend; dyncon++) | |
10322 | { | |
10323 | Elf_Internal_Dyn dyn; | |
10324 | asection *s; | |
e1a9cb8e | 10325 | |
9d8504b1 | 10326 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 10327 | |
25dbc73a AM |
10328 | switch (dyn.d_tag) |
10329 | { | |
10330 | case DT_PLTGOT: | |
9d8504b1 | 10331 | if (htab->is_vxworks) |
ce558b89 | 10332 | s = htab->elf.sgotplt; |
9d8504b1 | 10333 | else |
ce558b89 | 10334 | s = htab->elf.splt; |
25dbc73a AM |
10335 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10336 | break; | |
86bbe32f | 10337 | |
25dbc73a | 10338 | case DT_PLTRELSZ: |
ce558b89 | 10339 | dyn.d_un.d_val = htab->elf.srelplt->size; |
25dbc73a | 10340 | break; |
e1a9cb8e | 10341 | |
25dbc73a | 10342 | case DT_JMPREL: |
ce558b89 | 10343 | s = htab->elf.srelplt; |
25dbc73a AM |
10344 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
10345 | break; | |
2f89ff8d | 10346 | |
1fe44d79 AM |
10347 | case DT_PPC_GOT: |
10348 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
10349 | break; |
10350 | ||
82e66161 AM |
10351 | case DT_TEXTREL: |
10352 | if (htab->local_ifunc_resolver) | |
10353 | info->callbacks->einfo | |
10354 | (_("%X%P: text relocations and GNU indirect " | |
10355 | "functions will result in a segfault at runtime\n")); | |
10356 | else if (htab->maybe_local_ifunc_resolver) | |
10357 | info->callbacks->einfo | |
10358 | (_("%P: warning: text relocations and GNU indirect " | |
10359 | "functions may result in a segfault at runtime\n")); | |
10360 | continue; | |
10361 | ||
25dbc73a | 10362 | default: |
7a2b07ff NS |
10363 | if (htab->is_vxworks |
10364 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
10365 | break; | |
25dbc73a AM |
10366 | continue; |
10367 | } | |
4c45e5c9 | 10368 | |
25dbc73a AM |
10369 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
10370 | } | |
10371 | } | |
4c45e5c9 | 10372 | |
6528b6eb AM |
10373 | if (htab->elf.sgot != NULL |
10374 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
25dbc73a | 10375 | { |
ce558b89 AM |
10376 | if (htab->elf.hgot->root.u.def.section == htab->elf.sgot |
10377 | || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt) | |
e87d4038 | 10378 | { |
e79f5955 | 10379 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 10380 | |
e87d4038 AM |
10381 | p += htab->elf.hgot->root.u.def.value; |
10382 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
10383 | { |
10384 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
10385 | so that a function can easily find the address of | |
10386 | _GLOBAL_OFFSET_TABLE_. */ | |
10387 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
10388 | < htab->elf.hgot->root.u.def.section->size); | |
10389 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
10390 | } | |
3b36f7e6 | 10391 | |
e87d4038 | 10392 | if (sdyn != NULL) |
e79f5955 AM |
10393 | { |
10394 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
10395 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
10396 | < htab->elf.hgot->root.u.def.section->size); | |
10397 | bfd_put_32 (output_bfd, val, p); | |
10398 | } | |
e87d4038 AM |
10399 | } |
10400 | else | |
10401 | { | |
695344c0 | 10402 | /* xgettext:c-format */ |
8de848d8 | 10403 | info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"), |
25f53a85 | 10404 | htab->elf.hgot->root.root.string, |
ce558b89 AM |
10405 | (htab->elf.sgotplt != NULL |
10406 | ? htab->elf.sgotplt->name | |
10407 | : htab->elf.sgot->name)); | |
e87d4038 AM |
10408 | bfd_set_error (bfd_error_bad_value); |
10409 | ret = FALSE; | |
10410 | } | |
25dbc73a | 10411 | |
ce558b89 | 10412 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; |
25dbc73a AM |
10413 | } |
10414 | ||
9d8504b1 | 10415 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
6528b6eb AM |
10416 | if (htab->is_vxworks |
10417 | && htab->elf.splt != NULL | |
10418 | && htab->elf.splt->size != 0 | |
10419 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
9d8504b1 | 10420 | { |
6528b6eb | 10421 | asection *splt = htab->elf.splt; |
9d8504b1 | 10422 | /* Use the right PLT. */ |
0e1862bb | 10423 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
10424 | ? ppc_elf_vxworks_pic_plt0_entry |
10425 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 10426 | |
0e1862bb | 10427 | if (!bfd_link_pic (info)) |
9d8504b1 | 10428 | { |
e87d4038 | 10429 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10430 | |
e87d4038 | 10431 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10432 | splt->contents + 0); |
e87d4038 | 10433 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10434 | splt->contents + 4); |
10435 | } | |
10436 | else | |
10437 | { | |
10438 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10439 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10440 | } | |
10441 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10442 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10443 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10444 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10445 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10446 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10447 | ||
0e1862bb | 10448 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
10449 | { |
10450 | Elf_Internal_Rela rela; | |
10451 | bfd_byte *loc; | |
10452 | ||
10453 | loc = htab->srelplt2->contents; | |
10454 | ||
10455 | /* Output the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10456 | rela.r_offset = (htab->elf.splt->output_section->vma |
10457 | + htab->elf.splt->output_offset | |
9d8504b1 | 10458 | + 2); |
636ce3f5 | 10459 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10460 | rela.r_addend = 0; |
10461 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10462 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10463 | |
9d8504b1 | 10464 | /* Output the @l relocation for the second instruction. */ |
ce558b89 AM |
10465 | rela.r_offset = (htab->elf.splt->output_section->vma |
10466 | + htab->elf.splt->output_offset | |
9d8504b1 | 10467 | + 6); |
636ce3f5 | 10468 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10469 | rela.r_addend = 0; |
10470 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10471 | loc += sizeof (Elf32_External_Rela); | |
10472 | ||
10473 | /* Fix up the remaining relocations. They may have the wrong | |
10474 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10475 | in which symbols were output. */ | |
10476 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10477 | { | |
10478 | Elf_Internal_Rela rel; | |
10479 | ||
10480 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10481 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10482 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10483 | loc += sizeof (Elf32_External_Rela); | |
10484 | ||
10485 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10486 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10487 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10488 | loc += sizeof (Elf32_External_Rela); | |
10489 | ||
10490 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10491 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10492 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10493 | loc += sizeof (Elf32_External_Rela); | |
10494 | } | |
10495 | } | |
10496 | } | |
10497 | ||
e054468f AM |
10498 | if (htab->glink != NULL |
10499 | && htab->glink->contents != NULL | |
10500 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10501 | { |
10502 | unsigned char *p; | |
10503 | unsigned char *endp; | |
a6aa5195 | 10504 | bfd_vma res0; |
d7128ce4 | 10505 | unsigned int i; |
a6aa5195 AM |
10506 | |
10507 | /* | |
10508 | * PIC glink code is the following: | |
10509 | * | |
10510 | * # ith PLT code stub. | |
10511 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10512 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10513 | * mtctr 11 | |
10514 | * bctr | |
10515 | * | |
10516 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10517 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10518 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10519 | * res_0: b PLTresolve | |
10520 | * res_1: b PLTresolve | |
10521 | * . | |
10522 | * # Some number of entries towards the end can be nops | |
10523 | * res_n_m3: nop | |
10524 | * res_n_m2: nop | |
10525 | * res_n_m1: | |
10526 | * | |
10527 | * PLTresolve: | |
10528 | * addis 11,11,(1f-res_0)@ha | |
10529 | * mflr 0 | |
10530 | * bcl 20,31,1f | |
10531 | * 1: addi 11,11,(1b-res_0)@l | |
10532 | * mflr 12 | |
10533 | * mtlr 0 | |
07d6d2b8 | 10534 | * sub 11,11,12 # r11 = index * 4 |
a6aa5195 | 10535 | * addis 12,12,(got+4-1b)@ha |
07d6d2b8 AM |
10536 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve |
10537 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
a6aa5195 AM |
10538 | * mtctr 0 |
10539 | * add 0,11,11 | |
07d6d2b8 | 10540 | * add 11,0,11 # r11 = index * 12 = reloc offset. |
a6aa5195 AM |
10541 | * bctr |
10542 | */ | |
10543 | static const unsigned int pic_plt_resolve[] = | |
10544 | { | |
10545 | ADDIS_11_11, | |
10546 | MFLR_0, | |
10547 | BCL_20_31, | |
10548 | ADDI_11_11, | |
10549 | MFLR_12, | |
10550 | MTLR_0, | |
10551 | SUB_11_11_12, | |
10552 | ADDIS_12_12, | |
10553 | LWZ_0_12, | |
10554 | LWZ_12_12, | |
10555 | MTCTR_0, | |
10556 | ADD_0_11_11, | |
10557 | ADD_11_0_11, | |
10558 | BCTR, | |
10559 | NOP, | |
10560 | NOP | |
10561 | }; | |
10562 | ||
176a0d42 AM |
10563 | /* |
10564 | * Non-PIC glink code is a little simpler. | |
10565 | * | |
10566 | * # ith PLT code stub. | |
10567 | * lis 11,(plt+(i-1)*4)@ha | |
10568 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10569 | * mtctr 11 | |
10570 | * bctr | |
10571 | * | |
10572 | * The branch table is the same, then comes | |
10573 | * | |
10574 | * PLTresolve: | |
10575 | * lis 12,(got+4)@ha | |
10576 | * addis 11,11,(-res_0)@ha | |
07d6d2b8 AM |
10577 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve |
10578 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
176a0d42 AM |
10579 | * mtctr 0 |
10580 | * add 0,11,11 | |
07d6d2b8 AM |
10581 | * lwz 12,(got+8)@l(12) # got[2] contains the map address |
10582 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
176a0d42 AM |
10583 | * bctr |
10584 | */ | |
d7128ce4 AM |
10585 | static const unsigned int plt_resolve[] = |
10586 | { | |
a6aa5195 AM |
10587 | LIS_12, |
10588 | ADDIS_11_11, | |
10589 | LWZ_0_12, | |
10590 | ADDI_11_11, | |
d7128ce4 | 10591 | MTCTR_0, |
7e8aeb9a | 10592 | ADD_0_11_11, |
a6aa5195 | 10593 | LWZ_12_12, |
7e8aeb9a | 10594 | ADD_11_0_11, |
d7128ce4 AM |
10595 | BCTR, |
10596 | NOP, | |
10597 | NOP, | |
a6aa5195 AM |
10598 | NOP, |
10599 | NOP, | |
10600 | NOP, | |
10601 | NOP, | |
d7128ce4 AM |
10602 | NOP |
10603 | }; | |
10604 | ||
a6aa5195 AM |
10605 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
10606 | abort (); | |
10607 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
10608 | abort (); |
10609 | ||
a6aa5195 | 10610 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10611 | and perhaps some padding. */ |
a6aa5195 AM |
10612 | p = htab->glink->contents; |
10613 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10614 | endp = htab->glink->contents; |
10615 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10616 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10617 | { |
10618 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10619 | p += 4; | |
10620 | } | |
10621 | while (p < endp) | |
10622 | { | |
10623 | bfd_put_32 (output_bfd, NOP, p); | |
10624 | p += 4; | |
10625 | } | |
10626 | ||
7e8aeb9a | 10627 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10628 | + htab->glink->output_section->vma |
10629 | + htab->glink->output_offset); | |
10630 | ||
da3a2088 AM |
10631 | if (htab->params->ppc476_workaround) |
10632 | { | |
10633 | /* Ensure that a call stub at the end of a page doesn't | |
10634 | result in prefetch over the end of the page into the | |
10635 | glink branch table. */ | |
10636 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10637 | bfd_vma page_addr; | |
10638 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10639 | + htab->glink->output_offset); | |
10640 | ||
10641 | for (page_addr = res0 & -pagesize; | |
10642 | page_addr > glink_start; | |
10643 | page_addr -= pagesize) | |
10644 | { | |
10645 | /* We have a plt call stub that may need fixing. */ | |
10646 | bfd_byte *loc; | |
10647 | unsigned int insn; | |
10648 | ||
10649 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10650 | insn = bfd_get_32 (output_bfd, loc); | |
10651 | if (insn == BCTR) | |
10652 | { | |
10653 | /* By alignment, we know that there must be at least | |
10654 | one other call stub before this one. */ | |
10655 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10656 | if (insn == BCTR) | |
10657 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10658 | else | |
10659 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10660 | } | |
10661 | } | |
10662 | } | |
10663 | ||
86b9da88 | 10664 | /* Last comes the PLTresolve stub. */ |
0e1862bb | 10665 | if (bfd_link_pic (info)) |
7e8aeb9a | 10666 | { |
a6aa5195 | 10667 | bfd_vma bcl; |
d7128ce4 | 10668 | |
a6aa5195 | 10669 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 10670 | { |
da3a2088 AM |
10671 | unsigned int insn = pic_plt_resolve[i]; |
10672 | ||
10673 | if (htab->params->ppc476_workaround && insn == NOP) | |
10674 | insn = BA + 0; | |
10675 | bfd_put_32 (output_bfd, insn, p); | |
7e8aeb9a AM |
10676 | p += 4; |
10677 | } | |
a6aa5195 AM |
10678 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
10679 | ||
10680 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
10681 | + htab->glink->output_section->vma | |
10682 | + htab->glink->output_offset); | |
10683 | ||
10684 | bfd_put_32 (output_bfd, | |
10685 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
10686 | bfd_put_32 (output_bfd, | |
10687 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
10688 | bfd_put_32 (output_bfd, | |
10689 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
10690 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
10691 | { | |
10692 | bfd_put_32 (output_bfd, | |
10693 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
10694 | bfd_put_32 (output_bfd, | |
10695 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
10696 | } | |
10697 | else | |
10698 | { | |
10699 | bfd_put_32 (output_bfd, | |
10700 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
10701 | bfd_put_32 (output_bfd, | |
10702 | LWZ_12_12 + 4, p + 9*4); | |
10703 | } | |
7e8aeb9a AM |
10704 | } |
10705 | else | |
d7128ce4 | 10706 | { |
a6aa5195 | 10707 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a | 10708 | { |
da3a2088 AM |
10709 | unsigned int insn = plt_resolve[i]; |
10710 | ||
10711 | if (htab->params->ppc476_workaround && insn == NOP) | |
10712 | insn = BA + 0; | |
10713 | bfd_put_32 (output_bfd, insn, p); | |
7e8aeb9a AM |
10714 | p += 4; |
10715 | } | |
a6aa5195 AM |
10716 | p -= 4 * ARRAY_SIZE (plt_resolve); |
10717 | ||
10718 | bfd_put_32 (output_bfd, | |
10719 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
10720 | bfd_put_32 (output_bfd, | |
10721 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
10722 | bfd_put_32 (output_bfd, | |
10723 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
10724 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10725 | { | |
10726 | bfd_put_32 (output_bfd, | |
10727 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
10728 | bfd_put_32 (output_bfd, | |
10729 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
10730 | } | |
10731 | else | |
10732 | { | |
10733 | bfd_put_32 (output_bfd, | |
10734 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
10735 | bfd_put_32 (output_bfd, | |
10736 | LWZ_12_12 + 4, p + 6*4); | |
10737 | } | |
d7128ce4 | 10738 | } |
d7128ce4 AM |
10739 | } |
10740 | ||
6177242a AM |
10741 | if (htab->glink_eh_frame != NULL |
10742 | && htab->glink_eh_frame->contents != NULL) | |
10743 | { | |
10744 | unsigned char *p = htab->glink_eh_frame->contents; | |
10745 | bfd_vma val; | |
10746 | ||
6177242a AM |
10747 | p += sizeof (glink_eh_frame_cie); |
10748 | /* FDE length. */ | |
6177242a AM |
10749 | p += 4; |
10750 | /* CIE pointer. */ | |
6177242a AM |
10751 | p += 4; |
10752 | /* Offset to .glink. */ | |
10753 | val = (htab->glink->output_section->vma | |
10754 | + htab->glink->output_offset); | |
10755 | val -= (htab->glink_eh_frame->output_section->vma | |
10756 | + htab->glink_eh_frame->output_offset); | |
10757 | val -= p - htab->glink_eh_frame->contents; | |
10758 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10759 | |
dbaa2011 | 10760 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10761 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10762 | htab->glink_eh_frame, | |
10763 | htab->glink_eh_frame->contents)) | |
10764 | return FALSE; | |
10765 | } | |
10766 | ||
e87d4038 | 10767 | return ret; |
25dbc73a | 10768 | } |
e1a9cb8e | 10769 | \f |
6d00b590 | 10770 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10771 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10772 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10773 | #define TARGET_BIG_NAME "elf32-powerpc" |
10774 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10775 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 | 10776 | #define ELF_MACHINE_CODE EM_PPC |
d0facd1b NC |
10777 | #ifdef __QNXTARGET__ |
10778 | #define ELF_MAXPAGESIZE 0x1000 | |
04c6a44c | 10779 | #define ELF_COMMONPAGESIZE 0x1000 |
d0facd1b | 10780 | #else |
252b5132 | 10781 | #define ELF_MAXPAGESIZE 0x10000 |
04c6a44c | 10782 | #define ELF_COMMONPAGESIZE 0x10000 |
d0facd1b | 10783 | #endif |
b1342370 | 10784 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
10785 | #define elf_info_to_howto ppc_elf_info_to_howto |
10786 | ||
10787 | #ifdef EM_CYGNUS_POWERPC | |
10788 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10789 | #endif | |
10790 | ||
10791 | #ifdef EM_PPC_OLD | |
10792 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10793 | #endif | |
10794 | ||
10795 | #define elf_backend_plt_not_loaded 1 | |
5474d94f | 10796 | #define elf_backend_want_dynrelro 1 |
252b5132 | 10797 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10798 | #define elf_backend_can_refcount 1 |
b491616a | 10799 | #define elf_backend_rela_normal 1 |
53291d1f | 10800 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10801 | |
43c40ab2 | 10802 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10803 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10804 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10805 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10806 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10807 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10808 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10809 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10810 | |
feee612b | 10811 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 | 10812 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
252b5132 RH |
10813 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
10814 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10815 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10816 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
c0e331c7 | 10817 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
7fce784e | 10818 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10819 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10820 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10821 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10822 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10823 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10824 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10825 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10826 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
954b63d4 | 10827 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10828 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10829 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10830 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10831 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10832 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10833 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10834 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10835 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10836 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10837 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10838 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10839 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
252b5132 RH |
10840 | |
10841 | #include "elf32-target.h" | |
9d8504b1 | 10842 | |
7b8e7dad AM |
10843 | /* FreeBSD 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_fbsd_vec |
7b8e7dad AM |
10850 | #undef TARGET_BIG_NAME |
10851 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10852 | ||
10853 | #undef ELF_OSABI | |
10854 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10855 | ||
10856 | #undef elf32_bed | |
10857 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10858 | ||
10859 | #include "elf32-target.h" | |
10860 | ||
9d8504b1 PB |
10861 | /* VxWorks Target */ |
10862 | ||
10863 | #undef TARGET_LITTLE_SYM | |
10864 | #undef TARGET_LITTLE_NAME | |
10865 | ||
10866 | #undef TARGET_BIG_SYM | |
6d00b590 | 10867 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10868 | #undef TARGET_BIG_NAME |
10869 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10870 | ||
7b8e7dad AM |
10871 | #undef ELF_OSABI |
10872 | ||
d5e3d971 PB |
10873 | /* VxWorks uses the elf default section flags for .plt. */ |
10874 | static const struct bfd_elf_special_section * | |
4aef7643 | 10875 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec) |
9d8504b1 | 10876 | { |
d5e3d971 PB |
10877 | if (sec->name == NULL) |
10878 | return NULL; | |
10879 | ||
10880 | if (strcmp (sec->name, ".plt") == 0) | |
10881 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10882 | ||
10883 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10884 | } | |
9d8504b1 PB |
10885 | |
10886 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10887 | appropriately for VxWorks. */ | |
10888 | static struct bfd_link_hash_table * | |
10889 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10890 | { | |
10891 | struct bfd_link_hash_table *ret; | |
10892 | ||
10893 | ret = ppc_elf_link_hash_table_create (abfd); | |
10894 | if (ret) | |
10895 | { | |
10896 | struct ppc_elf_link_hash_table *htab | |
954b63d4 | 10897 | = (struct ppc_elf_link_hash_table *)ret; |
9d8504b1 | 10898 | htab->is_vxworks = 1; |
4a3dc543 | 10899 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10900 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10901 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10902 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10903 | } | |
10904 | return ret; | |
10905 | } | |
10906 | ||
10907 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10908 | static bfd_boolean | |
10909 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10910 | struct bfd_link_info *info, | |
10911 | Elf_Internal_Sym *sym, | |
4aef7643 AM |
10912 | const char **namep, |
10913 | flagword *flagsp, | |
9d8504b1 PB |
10914 | asection **secp, |
10915 | bfd_vma *valp) | |
10916 | { | |
4aef7643 AM |
10917 | if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, |
10918 | valp)) | |
9d8504b1 PB |
10919 | return FALSE; |
10920 | ||
4aef7643 | 10921 | return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp); |
9d8504b1 PB |
10922 | } |
10923 | ||
9d8504b1 PB |
10924 | static void |
10925 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
10926 | { | |
4aef7643 AM |
10927 | ppc_elf_final_write_processing (abfd, linker); |
10928 | elf_vxworks_final_write_processing (abfd, linker); | |
9d8504b1 PB |
10929 | } |
10930 | ||
10931 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10932 | define it. */ | |
10933 | #undef elf_backend_want_plt_sym | |
10934 | #define elf_backend_want_plt_sym 1 | |
10935 | #undef elf_backend_want_got_plt | |
10936 | #define elf_backend_want_got_plt 1 | |
10937 | #undef elf_backend_got_symbol_offset | |
10938 | #define elf_backend_got_symbol_offset 0 | |
10939 | #undef elf_backend_plt_not_loaded | |
10940 | #define elf_backend_plt_not_loaded 0 | |
10941 | #undef elf_backend_plt_readonly | |
10942 | #define elf_backend_plt_readonly 1 | |
10943 | #undef elf_backend_got_header_size | |
10944 | #define elf_backend_got_header_size 12 | |
64f52338 AM |
10945 | #undef elf_backend_dtrel_excludes_plt |
10946 | #define elf_backend_dtrel_excludes_plt 1 | |
9d8504b1 | 10947 | |
468392fb AM |
10948 | #undef bfd_elf32_get_synthetic_symtab |
10949 | ||
9d8504b1 PB |
10950 | #undef bfd_elf32_bfd_link_hash_table_create |
10951 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10952 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10953 | #undef elf_backend_add_symbol_hook |
10954 | #define elf_backend_add_symbol_hook \ | |
10955 | ppc_elf_vxworks_add_symbol_hook | |
10956 | #undef elf_backend_link_output_symbol_hook | |
10957 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10958 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10959 | #undef elf_backend_final_write_processing |
10960 | #define elf_backend_final_write_processing \ | |
10961 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10962 | #undef elf_backend_get_sec_type_attr |
10963 | #define elf_backend_get_sec_type_attr \ | |
10964 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10965 | #undef elf_backend_emit_relocs |
10966 | #define elf_backend_emit_relocs \ | |
10967 | elf_vxworks_emit_relocs | |
10968 | ||
10969 | #undef elf32_bed | |
10970 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 10971 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
10972 | |
10973 | #include "elf32-target.h" |