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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
b90efa5b | 2 | Copyright (C) 1994-2015 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" |
70a38d42 | 38 | #include "elf-linux-psinfo.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 | { | |
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 */ | |
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 | { | |
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 */ | |
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) */ | |
121 | 0x7d8903a6, /* mtctr r12 */ | |
122 | 0x819e0004, /* lwz r12,4(r30) */ | |
123 | 0x4e800420, /* bctr */ | |
124 | 0x60000000, /* nop */ | |
125 | 0x60000000, /* nop */ | |
126 | 0x60000000, /* nop */ | |
127 | 0x60000000, /* nop */ | |
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 | |
137 | /* The number of relocations in the PLTResolve slot when when creating | |
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 */ | |
417 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ | |
433 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ |
252b5132 RH |
449 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
465 | ppc_elf_addr16_ha_reloc, /* special_function */ |
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 RH |
479 | 0, /* bitpos */ |
480 | complain_overflow_signed, /* complain_on_overflow */ | |
481 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ |
252b5132 RH |
500 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
516 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
531 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
626 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
642 | bfd_elf_generic_reloc, /* special_function */ |
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 */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ |
252b5132 RH |
674 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
690 | ppc_elf_addr16_ha_reloc, /* special_function */ |
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 */ | |
706 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ |
252b5132 RH |
721 | bfd_elf_generic_reloc, /* special_function */ |
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 */ | |
736 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ |
252b5132 RH |
751 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
252b5132 RH |
766 | ppc_elf_addr16_ha_reloc, /* special_function */ |
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 */ |
7619e7c7 AM |
1242 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
7619e7c7 AM |
1257 | bfd_elf_generic_reloc, /* special_function */ |
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 */ | |
1272 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ | |
1287 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ | |
25dbc73a AM |
1304 | ppc_elf_addr16_ha_reloc, /* special_function */ |
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 */ |
25dbc73a AM |
1321 | bfd_elf_generic_reloc, /* special_function */ |
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 */ |
25dbc73a AM |
1338 | bfd_elf_generic_reloc, /* special_function */ |
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 */ | |
1354 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ | |
1371 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ | |
1395 | bfd_elf_generic_reloc, /* special_function */ | |
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 */ | |
1429 | 0xfe, /* dst_mask */ | |
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 */ |
b9c361e0 JL |
1455 | bfd_elf_generic_reloc, /* special_function */ |
1456 | "R_PPC_VLE_LO16A", /* name */ | |
1457 | FALSE, /* partial_inplace */ | |
1458 | 0, /* src_mask */ | |
bdaacd3a | 1459 | 0x1f007ff, /* 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 */ |
b9c361e0 JL |
1470 | bfd_elf_generic_reloc, /* special_function */ |
1471 | "R_PPC_VLE_LO16D", /* name */ | |
1472 | FALSE, /* partial_inplace */ | |
1473 | 0, /* src_mask */ | |
1474 | 0x1f07ff, /* dst_mask */ | |
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 */ |
b9c361e0 JL |
1485 | bfd_elf_generic_reloc, /* special_function */ |
1486 | "R_PPC_VLE_HI16A", /* name */ | |
1487 | FALSE, /* partial_inplace */ | |
1488 | 0, /* src_mask */ | |
bdaacd3a | 1489 | 0x1f007ff, /* 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 */ |
b9c361e0 JL |
1500 | bfd_elf_generic_reloc, /* special_function */ |
1501 | "R_PPC_VLE_HI16D", /* name */ | |
1502 | FALSE, /* partial_inplace */ | |
1503 | 0, /* src_mask */ | |
1504 | 0x1f07ff, /* dst_mask */ | |
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 */ |
b9c361e0 JL |
1515 | bfd_elf_generic_reloc, /* special_function */ |
1516 | "R_PPC_VLE_HA16A", /* name */ | |
1517 | FALSE, /* partial_inplace */ | |
1518 | 0, /* src_mask */ | |
bdaacd3a | 1519 | 0x1f007ff, /* 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 */ |
b9c361e0 JL |
1530 | bfd_elf_generic_reloc, /* special_function */ |
1531 | "R_PPC_VLE_HA16D", /* name */ | |
1532 | FALSE, /* partial_inplace */ | |
1533 | 0, /* src_mask */ | |
1534 | 0x1f07ff, /* dst_mask */ | |
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 */ |
b9c361e0 JL |
1547 | bfd_elf_generic_reloc, /* special_function */ |
1548 | "R_PPC_VLE_SDA21", /* name */ | |
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 */ |
b9c361e0 JL |
1562 | bfd_elf_generic_reloc, /* special_function */ |
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 */ | |
86c95733 | 1576 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1577 | bfd_elf_generic_reloc, /* special_function */ |
1578 | "R_PPC_VLE_SDAREL_LO16A", /* name */ | |
1579 | FALSE, /* partial_inplace */ | |
1580 | 0, /* src_mask */ | |
bdaacd3a | 1581 | 0x1f007ff, /* 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 */ | |
86c95733 | 1591 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1592 | bfd_elf_generic_reloc, /* special_function */ |
1593 | "R_PPC_VLE_SDAREL_LO16D", /* name */ | |
1594 | FALSE, /* partial_inplace */ | |
1595 | 0, /* src_mask */ | |
1596 | 0x1f07ff, /* dst_mask */ | |
1597 | FALSE), /* pcrel_offset */ | |
1598 | ||
1599 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
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 */ | |
86c95733 | 1606 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1607 | bfd_elf_generic_reloc, /* special_function */ |
1608 | "R_PPC_VLE_SDAREL_HI16A", /* name */ | |
1609 | FALSE, /* partial_inplace */ | |
1610 | 0, /* src_mask */ | |
bdaacd3a | 1611 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1612 | FALSE), /* pcrel_offset */ |
1613 | ||
1614 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
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 */ | |
86c95733 | 1621 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1622 | bfd_elf_generic_reloc, /* special_function */ |
1623 | "R_PPC_VLE_SDAREL_HI16D", /* name */ | |
1624 | FALSE, /* partial_inplace */ | |
1625 | 0, /* src_mask */ | |
1626 | 0x1f07ff, /* dst_mask */ | |
1627 | FALSE), /* pcrel_offset */ | |
1628 | ||
1629 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
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 */ | |
86c95733 | 1636 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1637 | bfd_elf_generic_reloc, /* special_function */ |
1638 | "R_PPC_VLE_SDAREL_HA16A", /* name */ | |
1639 | FALSE, /* partial_inplace */ | |
1640 | 0, /* src_mask */ | |
bdaacd3a | 1641 | 0x1f007ff, /* dst_mask */ |
b9c361e0 JL |
1642 | FALSE), /* pcrel_offset */ |
1643 | ||
1644 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
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 */ | |
86c95733 | 1651 | complain_overflow_dont, /* complain_on_overflow */ |
b9c361e0 JL |
1652 | bfd_elf_generic_reloc, /* special_function */ |
1653 | "R_PPC_VLE_SDAREL_HA16D", /* name */ | |
1654 | FALSE, /* partial_inplace */ | |
1655 | 0, /* src_mask */ | |
1656 | 0x1f07ff, /* dst_mask */ | |
1657 | FALSE), /* pcrel_offset */ | |
1658 | ||
e054468f AM |
1659 | HOWTO (R_PPC_IRELATIVE, /* type */ |
1660 | 0, /* rightshift */ | |
1661 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1662 | 32, /* bitsize */ | |
1663 | FALSE, /* pc_relative */ | |
1664 | 0, /* bitpos */ | |
86c95733 | 1665 | complain_overflow_dont, /* complain_on_overflow */ |
e054468f AM |
1666 | bfd_elf_generic_reloc, /* special_function */ |
1667 | "R_PPC_IRELATIVE", /* name */ | |
1668 | FALSE, /* partial_inplace */ | |
1669 | 0, /* src_mask */ | |
1670 | 0xffffffff, /* dst_mask */ | |
1671 | FALSE), /* pcrel_offset */ | |
1672 | ||
d7128ce4 AM |
1673 | /* A 16 bit relative relocation. */ |
1674 | HOWTO (R_PPC_REL16, /* type */ | |
1675 | 0, /* rightshift */ | |
1676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1677 | 16, /* bitsize */ | |
1678 | TRUE, /* pc_relative */ | |
1679 | 0, /* bitpos */ | |
86c95733 | 1680 | complain_overflow_signed, /* complain_on_overflow */ |
d7128ce4 AM |
1681 | bfd_elf_generic_reloc, /* special_function */ |
1682 | "R_PPC_REL16", /* name */ | |
1683 | FALSE, /* partial_inplace */ | |
1684 | 0, /* src_mask */ | |
1685 | 0xffff, /* dst_mask */ | |
1686 | TRUE), /* pcrel_offset */ | |
1687 | ||
1688 | /* A 16 bit relative relocation without overflow. */ | |
1689 | HOWTO (R_PPC_REL16_LO, /* type */ | |
1690 | 0, /* rightshift */ | |
1691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1692 | 16, /* bitsize */ | |
1693 | TRUE, /* pc_relative */ | |
1694 | 0, /* bitpos */ | |
1695 | complain_overflow_dont,/* complain_on_overflow */ | |
1696 | bfd_elf_generic_reloc, /* special_function */ | |
1697 | "R_PPC_REL16_LO", /* name */ | |
1698 | FALSE, /* partial_inplace */ | |
1699 | 0, /* src_mask */ | |
1700 | 0xffff, /* dst_mask */ | |
1701 | TRUE), /* pcrel_offset */ | |
1702 | ||
1703 | /* The high order 16 bits of a relative address. */ | |
1704 | HOWTO (R_PPC_REL16_HI, /* type */ | |
1705 | 16, /* 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_HI", /* 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, plus 1 if the contents of | |
1719 | the low 16 bits, treated as a signed number, is negative. */ | |
1720 | HOWTO (R_PPC_REL16_HA, /* type */ | |
1721 | 16, /* rightshift */ | |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 16, /* bitsize */ | |
1724 | TRUE, /* pc_relative */ | |
1725 | 0, /* bitpos */ | |
1726 | complain_overflow_dont, /* complain_on_overflow */ | |
1727 | ppc_elf_addr16_ha_reloc, /* special_function */ | |
1728 | "R_PPC_REL16_HA", /* name */ | |
1729 | FALSE, /* partial_inplace */ | |
1730 | 0, /* src_mask */ | |
1731 | 0xffff, /* dst_mask */ | |
1732 | TRUE), /* pcrel_offset */ | |
1733 | ||
25dbc73a AM |
1734 | /* GNU extension to record C++ vtable hierarchy. */ |
1735 | HOWTO (R_PPC_GNU_VTINHERIT, /* type */ | |
1736 | 0, /* rightshift */ | |
1737 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1738 | 0, /* bitsize */ | |
1739 | FALSE, /* pc_relative */ | |
1740 | 0, /* bitpos */ | |
1741 | complain_overflow_dont, /* complain_on_overflow */ | |
1742 | NULL, /* special_function */ | |
1743 | "R_PPC_GNU_VTINHERIT", /* name */ | |
1744 | FALSE, /* partial_inplace */ | |
1745 | 0, /* src_mask */ | |
1746 | 0, /* dst_mask */ | |
1747 | FALSE), /* pcrel_offset */ | |
1748 | ||
1749 | /* GNU extension to record C++ vtable member usage. */ | |
1750 | HOWTO (R_PPC_GNU_VTENTRY, /* type */ | |
1751 | 0, /* rightshift */ | |
1752 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1753 | 0, /* bitsize */ | |
1754 | FALSE, /* pc_relative */ | |
1755 | 0, /* bitpos */ | |
1756 | complain_overflow_dont, /* complain_on_overflow */ | |
1757 | NULL, /* special_function */ | |
1758 | "R_PPC_GNU_VTENTRY", /* name */ | |
7619e7c7 AM |
1759 | FALSE, /* partial_inplace */ |
1760 | 0, /* src_mask */ | |
25dbc73a | 1761 | 0, /* dst_mask */ |
7619e7c7 AM |
1762 | FALSE), /* pcrel_offset */ |
1763 | ||
25dbc73a AM |
1764 | /* Phony reloc to handle AIX style TOC entries. */ |
1765 | HOWTO (R_PPC_TOC16, /* type */ | |
7619e7c7 AM |
1766 | 0, /* rightshift */ |
1767 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1768 | 16, /* bitsize */ | |
1769 | FALSE, /* pc_relative */ | |
1770 | 0, /* bitpos */ | |
25dbc73a | 1771 | complain_overflow_signed, /* complain_on_overflow */ |
7619e7c7 | 1772 | bfd_elf_generic_reloc, /* special_function */ |
25dbc73a | 1773 | "R_PPC_TOC16", /* name */ |
7619e7c7 AM |
1774 | FALSE, /* partial_inplace */ |
1775 | 0, /* src_mask */ | |
1776 | 0xffff, /* dst_mask */ | |
1777 | FALSE), /* pcrel_offset */ | |
25dbc73a | 1778 | }; |
70a38d42 SDJ |
1779 | |
1780 | /* External 32-bit PPC structure for PRPSINFO. This structure is | |
1781 | ABI-defined, thus we choose to use char arrays here in order to | |
1782 | avoid dealing with different types in different architectures. | |
1783 | ||
1784 | The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while | |
1785 | most non-PPC architectures use `short int'. | |
1786 | ||
1787 | This structure will ultimately be written in the corefile's note | |
1788 | section, as the PRPSINFO. */ | |
1789 | ||
1790 | struct elf_external_ppc_linux_prpsinfo32 | |
1791 | { | |
1792 | char pr_state; /* Numeric process state. */ | |
1793 | char pr_sname; /* Char for pr_state. */ | |
1794 | char pr_zomb; /* Zombie. */ | |
1795 | char pr_nice; /* Nice val. */ | |
1796 | char pr_flag[4]; /* Flags. */ | |
1797 | char pr_uid[4]; | |
1798 | char pr_gid[4]; | |
1799 | char pr_pid[4]; | |
1800 | char pr_ppid[4]; | |
1801 | char pr_pgrp[4]; | |
1802 | char pr_sid[4]; | |
1803 | char pr_fname[16]; /* Filename of executable. */ | |
1804 | char pr_psargs[80]; /* Initial part of arg list. */ | |
1805 | }; | |
1806 | ||
1807 | /* Helper macro to swap (properly handling endianess) things from the | |
1808 | `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32' | |
1809 | structure. | |
1810 | ||
1811 | Note that FROM should be a pointer, and TO should be the explicit type. */ | |
1812 | ||
1813 | #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \ | |
1814 | do \ | |
1815 | { \ | |
1816 | H_PUT_8 (abfd, from->pr_state, &to.pr_state); \ | |
1817 | H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \ | |
1818 | H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \ | |
1819 | H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \ | |
1820 | H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \ | |
1821 | H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \ | |
1822 | H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \ | |
1823 | H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \ | |
1824 | H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \ | |
1825 | H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \ | |
1826 | H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \ | |
1827 | strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \ | |
1828 | strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \ | |
1829 | } while (0) | |
1830 | ||
25dbc73a AM |
1831 | \f |
1832 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
1833 | ||
1834 | static void | |
1835 | ppc_elf_howto_init (void) | |
1836 | { | |
1837 | unsigned int i, type; | |
1838 | ||
1839 | for (i = 0; | |
1840 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
1841 | i++) | |
1842 | { | |
1843 | type = ppc_elf_howto_raw[i].type; | |
1844 | if (type >= (sizeof (ppc_elf_howto_table) | |
1845 | / sizeof (ppc_elf_howto_table[0]))) | |
1846 | abort (); | |
1847 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | static reloc_howto_type * | |
1852 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1853 | bfd_reloc_code_real_type code) | |
1854 | { | |
1855 | enum elf_ppc_reloc_type r; | |
1856 | ||
1857 | /* Initialize howto table if not already done. */ | |
1858 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
1859 | ppc_elf_howto_init (); | |
1860 | ||
1861 | switch (code) | |
1862 | { | |
1863 | default: | |
1864 | return NULL; | |
1865 | ||
1866 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
1867 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
1868 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 1869 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 1870 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 1871 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
1872 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
1873 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
1874 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
1875 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
1876 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
1877 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
1878 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
1879 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
1880 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
1881 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 1882 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 1883 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 1884 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
1885 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
1886 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
1887 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
1888 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
1889 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
1890 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
1891 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
1892 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
1893 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
1894 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 1895 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
1896 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
1897 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
1898 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
1899 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 1900 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 1901 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 1902 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
1903 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
1904 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
1905 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
1906 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 1907 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
1908 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
1909 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
1910 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
1911 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 1912 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 1913 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 1914 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 1915 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
1916 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
1917 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
1918 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
1919 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 1920 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 1921 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 1922 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
1923 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
1924 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
1925 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
1926 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
1927 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
1928 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
1929 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
1930 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
1931 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
1932 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
1933 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
1934 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
1935 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
1936 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
1937 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
1938 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
1939 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
1940 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
1941 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
1942 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
1943 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
1944 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
1945 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
1946 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
1947 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
1948 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
1949 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
1950 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
1951 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
1952 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
1953 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
1954 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
1955 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
1956 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
1957 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
1958 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
1959 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
1960 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
1961 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
1962 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
1963 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
1964 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
1965 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
1966 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
1967 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
1968 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
1969 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
1970 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
1971 | r = R_PPC_VLE_SDAREL_LO16A; | |
1972 | break; | |
1973 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
1974 | r = R_PPC_VLE_SDAREL_LO16D; | |
1975 | break; | |
1976 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
1977 | r = R_PPC_VLE_SDAREL_HI16A; | |
1978 | break; | |
1979 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
1980 | r = R_PPC_VLE_SDAREL_HI16D; | |
1981 | break; | |
1982 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
1983 | r = R_PPC_VLE_SDAREL_HA16A; | |
1984 | break; | |
1985 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
1986 | r = R_PPC_VLE_SDAREL_HA16D; | |
1987 | break; | |
d7128ce4 AM |
1988 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
1989 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
1990 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
1991 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
25dbc73a AM |
1992 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
1993 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
1994 | } | |
1995 | ||
1996 | return ppc_elf_howto_table[r]; | |
1997 | }; | |
1998 | ||
157090f7 AM |
1999 | static reloc_howto_type * |
2000 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2001 | const char *r_name) | |
2002 | { | |
2003 | unsigned int i; | |
2004 | ||
2005 | for (i = 0; | |
2006 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
2007 | i++) | |
2008 | if (ppc_elf_howto_raw[i].name != NULL | |
2009 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
2010 | return &ppc_elf_howto_raw[i]; | |
2011 | ||
2012 | return NULL; | |
2013 | } | |
2014 | ||
25dbc73a AM |
2015 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2016 | ||
2017 | static void | |
2018 | ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
2019 | arelent *cache_ptr, | |
2020 | Elf_Internal_Rela *dst) | |
2021 | { | |
cd21f5da NC |
2022 | unsigned int r_type; |
2023 | ||
25dbc73a AM |
2024 | /* Initialize howto table if not already done. */ |
2025 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2026 | ppc_elf_howto_init (); | |
2027 | ||
cd21f5da NC |
2028 | r_type = ELF32_R_TYPE (dst->r_info); |
2029 | if (r_type >= R_PPC_max) | |
2030 | { | |
64d29018 | 2031 | (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"), |
cd21f5da NC |
2032 | abfd, r_type); |
2033 | bfd_set_error (bfd_error_bad_value); | |
2034 | r_type = R_PPC_NONE; | |
2035 | } | |
2036 | cache_ptr->howto = ppc_elf_howto_table[r_type]; | |
375de94a AM |
2037 | |
2038 | /* Just because the above assert didn't trigger doesn't mean that | |
2039 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
2040 | if (!cache_ptr->howto) | |
2041 | { | |
2042 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
cd21f5da | 2043 | abfd, r_type); |
375de94a AM |
2044 | bfd_set_error (bfd_error_bad_value); |
2045 | ||
2046 | cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE]; | |
2047 | } | |
25dbc73a AM |
2048 | } |
2049 | ||
d7128ce4 | 2050 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
2051 | |
2052 | static bfd_reloc_status_type | |
2053 | ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
2054 | arelent *reloc_entry, | |
2055 | asymbol *symbol, | |
2056 | void *data ATTRIBUTE_UNUSED, | |
2057 | asection *input_section, | |
2058 | bfd *output_bfd, | |
2059 | char **error_message ATTRIBUTE_UNUSED) | |
2060 | { | |
2061 | bfd_vma relocation; | |
2062 | ||
2063 | if (output_bfd != NULL) | |
2064 | { | |
2065 | reloc_entry->address += input_section->output_offset; | |
2066 | return bfd_reloc_ok; | |
2067 | } | |
2068 | ||
25dbc73a AM |
2069 | if (bfd_is_com_section (symbol->section)) |
2070 | relocation = 0; | |
2071 | else | |
2072 | relocation = symbol->value; | |
2073 | ||
2074 | relocation += symbol->section->output_section->vma; | |
2075 | relocation += symbol->section->output_offset; | |
2076 | relocation += reloc_entry->addend; | |
d7128ce4 AM |
2077 | if (reloc_entry->howto->pc_relative) |
2078 | relocation -= reloc_entry->address; | |
25dbc73a AM |
2079 | |
2080 | reloc_entry->addend += (relocation & 0x8000) << 1; | |
2081 | ||
2082 | return bfd_reloc_continue; | |
2083 | } | |
2084 | ||
2085 | static bfd_reloc_status_type | |
2086 | ppc_elf_unhandled_reloc (bfd *abfd, | |
2087 | arelent *reloc_entry, | |
2088 | asymbol *symbol, | |
2089 | void *data, | |
2090 | asection *input_section, | |
2091 | bfd *output_bfd, | |
2092 | char **error_message) | |
2093 | { | |
2094 | /* If this is a relocatable link (output_bfd test tells us), just | |
2095 | call the generic function. Any adjustment will be done at final | |
2096 | link time. */ | |
2097 | if (output_bfd != NULL) | |
2098 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2099 | input_section, output_bfd, error_message); | |
2100 | ||
2101 | if (error_message != NULL) | |
2102 | { | |
2103 | static char buf[60]; | |
2104 | sprintf (buf, _("generic linker can't handle %s"), | |
2105 | reloc_entry->howto->name); | |
2106 | *error_message = buf; | |
2107 | } | |
2108 | return bfd_reloc_dangerous; | |
2109 | } | |
2110 | \f | |
2111 | /* Sections created by the linker. */ | |
2112 | ||
2113 | typedef struct elf_linker_section | |
2114 | { | |
c9a2f333 | 2115 | /* Pointer to the bfd section. */ |
25dbc73a | 2116 | asection *section; |
c9a2f333 AM |
2117 | /* Section name. */ |
2118 | const char *name; | |
2119 | /* Associated bss section name. */ | |
2120 | const char *bss_name; | |
2121 | /* Associated symbol name. */ | |
2122 | const char *sym_name; | |
046183de AM |
2123 | /* Associated symbol. */ |
2124 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
2125 | } elf_linker_section_t; |
2126 | ||
2127 | /* Linked list of allocated pointer entries. This hangs off of the | |
2128 | symbol lists, and provides allows us to return different pointers, | |
2129 | based on different addend's. */ | |
2130 | ||
2131 | typedef struct elf_linker_section_pointers | |
2132 | { | |
2133 | /* next allocated pointer for this symbol */ | |
2134 | struct elf_linker_section_pointers *next; | |
2135 | /* offset of pointer from beginning of section */ | |
2136 | bfd_vma offset; | |
2137 | /* addend used */ | |
2138 | bfd_vma addend; | |
2139 | /* which linker section this is */ | |
2140 | elf_linker_section_t *lsect; | |
25dbc73a AM |
2141 | } elf_linker_section_pointers_t; |
2142 | ||
2143 | struct ppc_elf_obj_tdata | |
2144 | { | |
2145 | struct elf_obj_tdata elf; | |
2146 | ||
2147 | /* A mapping from local symbols to offsets into the various linker | |
2148 | sections added. This is index by the symbol index. */ | |
2149 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
2150 | |
2151 | /* Flags used to auto-detect plt type. */ | |
2152 | unsigned int makes_plt_call : 1; | |
2153 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
2154 | }; |
2155 | ||
2156 | #define ppc_elf_tdata(bfd) \ | |
2157 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 2158 | |
25dbc73a AM |
2159 | #define elf_local_ptr_offsets(bfd) \ |
2160 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 2161 | |
0c8d6e5c AM |
2162 | #define is_ppc_elf(bfd) \ |
2163 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2164 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 2165 | |
25dbc73a | 2166 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 2167 | |
25dbc73a AM |
2168 | static bfd_boolean |
2169 | ppc_elf_mkobject (bfd *abfd) | |
2170 | { | |
0ffa91dd | 2171 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 2172 | PPC32_ELF_DATA); |
25dbc73a | 2173 | } |
7619e7c7 | 2174 | |
25dbc73a AM |
2175 | /* Fix bad default arch selected for a 32 bit input bfd when the |
2176 | default is 64 bit. */ | |
7619e7c7 | 2177 | |
25dbc73a AM |
2178 | static bfd_boolean |
2179 | ppc_elf_object_p (bfd *abfd) | |
2180 | { | |
2181 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) | |
2182 | { | |
2183 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 2184 | |
25dbc73a AM |
2185 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
2186 | { | |
2187 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
2188 | abfd->arch_info = abfd->arch_info->next; | |
2189 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
2190 | } | |
2191 | } | |
2192 | return TRUE; | |
2193 | } | |
7619e7c7 | 2194 | |
25dbc73a | 2195 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 2196 | |
25dbc73a AM |
2197 | static bfd_boolean |
2198 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
2199 | { | |
2200 | BFD_ASSERT (!elf_flags_init (abfd) | |
2201 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 2202 | |
25dbc73a AM |
2203 | elf_elfheader (abfd)->e_flags = flags; |
2204 | elf_flags_init (abfd) = TRUE; | |
2205 | return TRUE; | |
2206 | } | |
2207 | ||
25dbc73a | 2208 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 2209 | |
b34976b6 | 2210 | static bfd_boolean |
25dbc73a | 2211 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 2212 | { |
25dbc73a AM |
2213 | int offset; |
2214 | unsigned int size; | |
252b5132 | 2215 | |
25dbc73a AM |
2216 | switch (note->descsz) |
2217 | { | |
2218 | default: | |
2219 | return FALSE; | |
252b5132 | 2220 | |
25dbc73a AM |
2221 | case 268: /* Linux/PPC. */ |
2222 | /* pr_cursig */ | |
228e534f | 2223 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 2224 | |
25dbc73a | 2225 | /* pr_pid */ |
228e534f | 2226 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 2227 | |
25dbc73a AM |
2228 | /* pr_reg */ |
2229 | offset = 72; | |
2230 | size = 192; | |
deaaf2f3 | 2231 | |
25dbc73a AM |
2232 | break; |
2233 | } | |
deaaf2f3 | 2234 | |
25dbc73a AM |
2235 | /* Make a ".reg/999" section. */ |
2236 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2237 | size, note->descpos + offset); | |
2238 | } | |
252b5132 | 2239 | |
25dbc73a AM |
2240 | static bfd_boolean |
2241 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2242 | { | |
2243 | switch (note->descsz) | |
deaaf2f3 | 2244 | { |
25dbc73a AM |
2245 | default: |
2246 | return FALSE; | |
deaaf2f3 | 2247 | |
25dbc73a | 2248 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 2249 | elf_tdata (abfd)->core->pid |
bc989cdc | 2250 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 2251 | elf_tdata (abfd)->core->program |
25dbc73a | 2252 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 2253 | elf_tdata (abfd)->core->command |
25dbc73a AM |
2254 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
2255 | } | |
9abc968f | 2256 | |
25dbc73a AM |
2257 | /* Note that for some reason, a spurious space is tacked |
2258 | onto the end of the args in some (at least one anyway) | |
2259 | implementations, so strip it off if it exists. */ | |
70bccea4 | 2260 | |
25dbc73a | 2261 | { |
228e534f | 2262 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 2263 | int n = strlen (command); |
70bccea4 | 2264 | |
25dbc73a AM |
2265 | if (0 < n && command[n - 1] == ' ') |
2266 | command[n - 1] = '\0'; | |
2267 | } | |
deaaf2f3 | 2268 | |
25dbc73a AM |
2269 | return TRUE; |
2270 | } | |
deaaf2f3 | 2271 | |
70a38d42 SDJ |
2272 | char * |
2273 | elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz, | |
2274 | const struct elf_internal_linux_prpsinfo *prpsinfo) | |
2275 | { | |
2276 | struct elf_external_ppc_linux_prpsinfo32 data; | |
2277 | ||
2278 | memset (&data, 0, sizeof (data)); | |
2279 | PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data); | |
2280 | ||
2281 | return elfcore_write_note (abfd, buf, bufsiz, | |
2282 | "CORE", NT_PRPSINFO, &data, sizeof (data)); | |
2283 | } | |
2284 | ||
183e98be AM |
2285 | static char * |
2286 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
2287 | { | |
2288 | switch (note_type) | |
2289 | { | |
2290 | default: | |
2291 | return NULL; | |
2292 | ||
2293 | case NT_PRPSINFO: | |
2294 | { | |
2295 | char data[128]; | |
2296 | va_list ap; | |
2297 | ||
2298 | va_start (ap, note_type); | |
75cd47ed | 2299 | memset (data, 0, sizeof (data)); |
183e98be AM |
2300 | strncpy (data + 32, va_arg (ap, const char *), 16); |
2301 | strncpy (data + 48, va_arg (ap, const char *), 80); | |
2302 | va_end (ap); | |
2303 | return elfcore_write_note (abfd, buf, bufsiz, | |
2304 | "CORE", note_type, data, sizeof (data)); | |
2305 | } | |
2306 | ||
2307 | case NT_PRSTATUS: | |
2308 | { | |
2309 | char data[268]; | |
2310 | va_list ap; | |
2311 | long pid; | |
2312 | int cursig; | |
2313 | const void *greg; | |
2314 | ||
2315 | va_start (ap, note_type); | |
2316 | memset (data, 0, 72); | |
2317 | pid = va_arg (ap, long); | |
2318 | bfd_put_32 (abfd, pid, data + 24); | |
2319 | cursig = va_arg (ap, int); | |
2320 | bfd_put_16 (abfd, cursig, data + 12); | |
2321 | greg = va_arg (ap, const void *); | |
2322 | memcpy (data + 72, greg, 192); | |
2323 | memset (data + 264, 0, 4); | |
2324 | va_end (ap); | |
2325 | return elfcore_write_note (abfd, buf, bufsiz, | |
2326 | "CORE", note_type, data, sizeof (data)); | |
2327 | } | |
2328 | } | |
2329 | } | |
2330 | ||
b9c361e0 | 2331 | static flagword |
68ffbac6 | 2332 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
2333 | { |
2334 | ||
2335 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
2336 | return SHF_PPC_VLE; | |
2337 | ||
2338 | return 0; | |
2339 | } | |
2340 | ||
2341 | /* Add the VLE flag if required. */ | |
2342 | ||
2343 | bfd_boolean | |
2344 | ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr) | |
2345 | { | |
2346 | if (bfd_get_mach (abfd) == bfd_mach_ppc_vle | |
2347 | && (shdr->sh_flags & SHF_EXECINSTR) != 0) | |
2348 | shdr->sh_flags |= SHF_PPC_VLE; | |
2349 | ||
2350 | return TRUE; | |
2351 | } | |
2352 | ||
25dbc73a AM |
2353 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
2354 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 2355 | |
25dbc73a AM |
2356 | static bfd_vma |
2357 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
2358 | const asection *plt ATTRIBUTE_UNUSED, | |
2359 | const arelent *rel) | |
2360 | { | |
2361 | return rel->address; | |
2362 | } | |
deaaf2f3 | 2363 | |
25dbc73a | 2364 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
2365 | is called when bfd_section_from_shdr finds a section with an unknown |
2366 | type. */ | |
deaaf2f3 | 2367 | |
25dbc73a | 2368 | static bfd_boolean |
6dc132d9 L |
2369 | ppc_elf_section_from_shdr (bfd *abfd, |
2370 | Elf_Internal_Shdr *hdr, | |
2371 | const char *name, | |
2372 | int shindex) | |
25dbc73a AM |
2373 | { |
2374 | asection *newsect; | |
2375 | flagword flags; | |
d1c6de6f | 2376 | |
6dc132d9 | 2377 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 2378 | return FALSE; |
deaaf2f3 | 2379 | |
25dbc73a AM |
2380 | newsect = hdr->bfd_section; |
2381 | flags = bfd_get_section_flags (abfd, newsect); | |
2382 | if (hdr->sh_flags & SHF_EXCLUDE) | |
2383 | flags |= SEC_EXCLUDE; | |
9abc968f | 2384 | |
25dbc73a AM |
2385 | if (hdr->sh_type == SHT_ORDERED) |
2386 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 2387 | |
25dbc73a AM |
2388 | bfd_set_section_flags (abfd, newsect, flags); |
2389 | return TRUE; | |
2390 | } | |
2391 | ||
2392 | /* Set up any other section flags and such that may be necessary. */ | |
2393 | ||
2394 | static bfd_boolean | |
2395 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
2396 | Elf_Internal_Shdr *shdr, | |
2397 | asection *asect) | |
2398 | { | |
25dbc73a AM |
2399 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
2400 | shdr->sh_type = SHT_ORDERED; | |
2401 | ||
2402 | return TRUE; | |
2403 | } | |
2404 | ||
2405 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
2406 | need to bump up the number of section headers. */ | |
2407 | ||
2408 | static int | |
a6b96beb AM |
2409 | ppc_elf_additional_program_headers (bfd *abfd, |
2410 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
2411 | { |
2412 | asection *s; | |
2413 | int ret = 0; | |
d1c6de6f | 2414 | |
25dbc73a AM |
2415 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
2416 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2417 | ++ret; | |
d1c6de6f | 2418 | |
25dbc73a AM |
2419 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
2420 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
2421 | ++ret; | |
deaaf2f3 | 2422 | |
25dbc73a AM |
2423 | return ret; |
2424 | } | |
deaaf2f3 | 2425 | |
68ffbac6 | 2426 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
2427 | |
2428 | bfd_boolean | |
2429 | ppc_elf_modify_segment_map (bfd *abfd, | |
2430 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2431 | { | |
2432 | struct elf_segment_map *m, *n; | |
2433 | bfd_size_type amt; | |
2434 | unsigned int j, k; | |
2435 | bfd_boolean sect0_vle, sectj_vle; | |
2436 | ||
2437 | /* At this point in the link, output sections have already been sorted by | |
2438 | LMA and assigned to segments. All that is left to do is to ensure | |
2439 | there is no mixing of VLE & non-VLE sections in a text segment. | |
2440 | If we find that case, we split the segment. | |
2441 | We maintain the original output section order. */ | |
2442 | ||
12bd6957 | 2443 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 JL |
2444 | { |
2445 | if (m->count == 0) | |
2446 | continue; | |
2447 | ||
94caa966 | 2448 | sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0; |
b9c361e0 JL |
2449 | for (j = 1; j < m->count; ++j) |
2450 | { | |
94caa966 AM |
2451 | sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0; |
2452 | ||
2453 | if (sectj_vle != sect0_vle) | |
b9c361e0 JL |
2454 | break; |
2455 | } | |
2456 | if (j >= m->count) | |
2457 | continue; | |
2458 | ||
b9c361e0 JL |
2459 | /* sections 0..j-1 stay in this (current) segment, |
2460 | the remainder are put in a new segment. | |
2461 | The scan resumes with the new segment. */ | |
2462 | ||
2463 | /* Fix the new segment. */ | |
2464 | amt = sizeof (struct elf_segment_map); | |
2465 | amt += (m->count - j - 1) * sizeof (asection *); | |
2466 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
2467 | if (n == NULL) | |
2468 | return FALSE; | |
2469 | ||
2470 | n->p_type = PT_LOAD; | |
2471 | n->p_flags = PF_X | PF_R; | |
2472 | if (sectj_vle) | |
2473 | n->p_flags |= PF_PPC_VLE; | |
2474 | n->count = m->count - j; | |
2475 | for (k = 0; k < n->count; ++k) | |
2476 | { | |
2477 | n->sections[k] = m->sections[j+k]; | |
2478 | m->sections[j+k] = NULL; | |
2479 | } | |
2480 | n->next = m->next; | |
2481 | m->next = n; | |
2482 | ||
2483 | /* Fix the current segment */ | |
2484 | m->count = j; | |
2485 | } | |
2486 | ||
2487 | return TRUE; | |
2488 | } | |
2489 | ||
25dbc73a AM |
2490 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
2491 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
2492 | that the linker doesn't crater when trying to make more than | |
2493 | 2 sections. */ | |
e656e369 | 2494 | |
b35d266b | 2495 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 2496 | { |
0112cd26 NC |
2497 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2498 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2499 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2500 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2501 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
2502 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
2503 | { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 }, | |
2504 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2505 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2506 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2507 | }; |
2508 | ||
551b43fd AM |
2509 | /* This is what we want for new plt/got. */ |
2510 | static struct bfd_elf_special_section ppc_alt_plt = | |
0112cd26 | 2511 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
2512 | |
2513 | static const struct bfd_elf_special_section * | |
2514 | ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
7f4d3958 | 2515 | { |
b35d266b | 2516 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
2517 | |
2518 | /* See if this is one of the special sections. */ | |
2519 | if (sec->name == NULL) | |
2520 | return NULL; | |
2521 | ||
2522 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
2523 | sec->use_rela_p); | |
2524 | if (ssect != NULL) | |
2525 | { | |
2526 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
2527 | ssect = &ppc_alt_plt; | |
2528 | return ssect; | |
2529 | } | |
2530 | ||
2531 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
2532 | } | |
25dbc73a AM |
2533 | \f |
2534 | /* Very simple linked list structure for recording apuinfo values. */ | |
2535 | typedef struct apuinfo_list | |
2536 | { | |
2537 | struct apuinfo_list *next; | |
2538 | unsigned long value; | |
2539 | } | |
2540 | apuinfo_list; | |
e656e369 | 2541 | |
25dbc73a | 2542 | static apuinfo_list *head; |
f2faa800 | 2543 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 2544 | |
25dbc73a AM |
2545 | static void |
2546 | apuinfo_list_init (void) | |
2547 | { | |
2548 | head = NULL; | |
f2faa800 | 2549 | apuinfo_set = FALSE; |
25dbc73a | 2550 | } |
9abc968f | 2551 | |
25dbc73a AM |
2552 | static void |
2553 | apuinfo_list_add (unsigned long value) | |
2554 | { | |
2555 | apuinfo_list *entry = head; | |
deaaf2f3 | 2556 | |
25dbc73a AM |
2557 | while (entry != NULL) |
2558 | { | |
2559 | if (entry->value == value) | |
2560 | return; | |
2561 | entry = entry->next; | |
2562 | } | |
b4a38de6 | 2563 | |
25dbc73a AM |
2564 | entry = bfd_malloc (sizeof (* entry)); |
2565 | if (entry == NULL) | |
2566 | return; | |
e656e369 | 2567 | |
25dbc73a AM |
2568 | entry->value = value; |
2569 | entry->next = head; | |
2570 | head = entry; | |
2571 | } | |
9abc968f | 2572 | |
25dbc73a AM |
2573 | static unsigned |
2574 | apuinfo_list_length (void) | |
2575 | { | |
2576 | apuinfo_list *entry; | |
2577 | unsigned long count; | |
9abc968f | 2578 | |
25dbc73a AM |
2579 | for (entry = head, count = 0; |
2580 | entry; | |
2581 | entry = entry->next) | |
2582 | ++ count; | |
e656e369 | 2583 | |
25dbc73a AM |
2584 | return count; |
2585 | } | |
eea6121a | 2586 | |
25dbc73a AM |
2587 | static inline unsigned long |
2588 | apuinfo_list_element (unsigned long number) | |
2589 | { | |
2590 | apuinfo_list * entry; | |
e656e369 | 2591 | |
25dbc73a AM |
2592 | for (entry = head; |
2593 | entry && number --; | |
2594 | entry = entry->next) | |
2595 | ; | |
252b5132 | 2596 | |
25dbc73a AM |
2597 | return entry ? entry->value : 0; |
2598 | } | |
2599 | ||
2600 | static void | |
2601 | apuinfo_list_finish (void) | |
2602 | { | |
2603 | apuinfo_list *entry; | |
2604 | ||
2605 | for (entry = head; entry;) | |
252b5132 | 2606 | { |
25dbc73a AM |
2607 | apuinfo_list *next = entry->next; |
2608 | free (entry); | |
2609 | entry = next; | |
2610 | } | |
9abc968f | 2611 | |
25dbc73a AM |
2612 | head = NULL; |
2613 | } | |
9abc968f | 2614 | |
25dbc73a AM |
2615 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
2616 | #define APUINFO_LABEL "APUinfo" | |
9abc968f | 2617 | |
25dbc73a AM |
2618 | /* Scan the input BFDs and create a linked list of |
2619 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 2620 | |
25dbc73a AM |
2621 | static void |
2622 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
2623 | { | |
2624 | bfd *ibfd; | |
2625 | asection *asec; | |
deddc40b NS |
2626 | char *buffer = NULL; |
2627 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 2628 | unsigned i; |
25dbc73a AM |
2629 | unsigned long length; |
2630 | const char *error_message = NULL; | |
9abc968f | 2631 | |
25dbc73a AM |
2632 | if (link_info == NULL) |
2633 | return; | |
9abc968f | 2634 | |
25dbc73a | 2635 | apuinfo_list_init (); |
252b5132 | 2636 | |
25dbc73a | 2637 | /* Read in the input sections contents. */ |
c72f2fb2 | 2638 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 2639 | { |
25dbc73a | 2640 | unsigned long datum; |
252b5132 | 2641 | |
25dbc73a AM |
2642 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
2643 | if (asec == NULL) | |
2644 | continue; | |
252b5132 | 2645 | |
deddc40b | 2646 | error_message = _("corrupt %s section in %B"); |
25dbc73a | 2647 | length = asec->size; |
deddc40b NS |
2648 | if (length < 20) |
2649 | goto fail; | |
2650 | ||
f2faa800 | 2651 | apuinfo_set = TRUE; |
deddc40b | 2652 | if (largest_input_size < asec->size) |
25dbc73a | 2653 | { |
deddc40b NS |
2654 | if (buffer) |
2655 | free (buffer); | |
2656 | largest_input_size = asec->size; | |
2657 | buffer = bfd_malloc (largest_input_size); | |
2658 | if (!buffer) | |
2659 | return; | |
25dbc73a | 2660 | } |
5b914448 | 2661 | |
25dbc73a | 2662 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 2663 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a AM |
2664 | { |
2665 | error_message = _("unable to read in %s section from %B"); | |
2666 | goto fail; | |
2667 | } | |
252b5132 | 2668 | |
25dbc73a AM |
2669 | /* Verify the contents of the header. Note - we have to |
2670 | extract the values this way in order to allow for a | |
2671 | host whose endian-ness is different from the target. */ | |
deddc40b | 2672 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
2673 | if (datum != sizeof APUINFO_LABEL) |
2674 | goto fail; | |
252b5132 | 2675 | |
deddc40b | 2676 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
2677 | if (datum != 0x2) |
2678 | goto fail; | |
252b5132 | 2679 | |
deddc40b | 2680 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 2681 | goto fail; |
252b5132 | 2682 | |
25dbc73a | 2683 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 2684 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
2685 | if (datum + 20 != length) |
2686 | goto fail; | |
2687 | ||
25dbc73a AM |
2688 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
2689 | for (i = 0; i < datum; i += 4) | |
deddc40b | 2690 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
2691 | } |
2692 | ||
25dbc73a | 2693 | error_message = NULL; |
252b5132 | 2694 | |
f2faa800 | 2695 | if (apuinfo_set) |
deddc40b | 2696 | { |
f2faa800 NS |
2697 | /* Compute the size of the output section. */ |
2698 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 2699 | |
deddc40b NS |
2700 | /* Set the output section size, if it exists. */ |
2701 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 2702 | |
deddc40b NS |
2703 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
2704 | { | |
2705 | ibfd = abfd; | |
2706 | error_message = _("warning: unable to set size of %s section in %B"); | |
2707 | } | |
2708 | } | |
25dbc73a AM |
2709 | |
2710 | fail: | |
deddc40b NS |
2711 | if (buffer) |
2712 | free (buffer); | |
25dbc73a AM |
2713 | |
2714 | if (error_message) | |
2715 | (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME); | |
2716 | } | |
252b5132 | 2717 | |
25dbc73a AM |
2718 | /* Prevent the output section from accumulating the input sections' |
2719 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 2720 | |
25dbc73a AM |
2721 | static bfd_boolean |
2722 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 2723 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
2724 | asection *asec, |
2725 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
2726 | { | |
f2faa800 | 2727 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
2728 | } |
2729 | ||
25dbc73a AM |
2730 | /* Finally we can generate the output section. */ |
2731 | ||
2732 | static void | |
2733 | ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
7619e7c7 | 2734 | { |
25dbc73a AM |
2735 | bfd_byte *buffer; |
2736 | asection *asec; | |
2737 | unsigned i; | |
2738 | unsigned num_entries; | |
2739 | bfd_size_type length; | |
7619e7c7 | 2740 | |
25dbc73a AM |
2741 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
2742 | if (asec == NULL) | |
2743 | return; | |
2744 | ||
f2faa800 | 2745 | if (!apuinfo_set) |
25dbc73a AM |
2746 | return; |
2747 | ||
2748 | length = asec->size; | |
2749 | if (length < 20) | |
2750 | return; | |
2751 | ||
2752 | buffer = bfd_malloc (length); | |
2753 | if (buffer == NULL) | |
7619e7c7 | 2754 | { |
25dbc73a AM |
2755 | (*_bfd_error_handler) |
2756 | (_("failed to allocate space for new APUinfo section.")); | |
2757 | return; | |
7619e7c7 | 2758 | } |
7619e7c7 | 2759 | |
25dbc73a AM |
2760 | /* Create the apuinfo header. */ |
2761 | num_entries = apuinfo_list_length (); | |
2762 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
2763 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
2764 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
2765 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 2766 | |
25dbc73a AM |
2767 | length = 20; |
2768 | for (i = 0; i < num_entries; i++) | |
feee612b | 2769 | { |
25dbc73a AM |
2770 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
2771 | length += 4; | |
feee612b | 2772 | } |
feee612b | 2773 | |
25dbc73a AM |
2774 | if (length != asec->size) |
2775 | (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); | |
252b5132 | 2776 | |
25dbc73a AM |
2777 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
2778 | (*_bfd_error_handler) (_("failed to install new APUinfo section.")); | |
252b5132 | 2779 | |
25dbc73a AM |
2780 | free (buffer); |
2781 | ||
2782 | apuinfo_list_finish (); | |
252b5132 | 2783 | } |
25dbc73a | 2784 | \f |
7382d32a | 2785 | static bfd_boolean |
c6dd29ce | 2786 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 2787 | { |
c6dd29ce | 2788 | bfd_byte buf[GLINK_ENTRY_SIZE]; |
7382d32a | 2789 | |
c6dd29ce | 2790 | if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE)) |
7382d32a AM |
2791 | return FALSE; |
2792 | ||
c6dd29ce AM |
2793 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
2794 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
2795 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 | |
2796 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
2797 | } |
2798 | ||
468392fb AM |
2799 | static bfd_boolean |
2800 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2801 | { | |
2802 | bfd_vma vma = *(bfd_vma *) ptr; | |
2803 | return ((section->flags & SEC_ALLOC) != 0 | |
2804 | && section->vma <= vma | |
2805 | && vma < section->vma + section->size); | |
2806 | } | |
2807 | ||
2808 | static long | |
2809 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
2810 | long dynsymcount, asymbol **dynsyms, | |
2811 | asymbol **ret) | |
2812 | { | |
2813 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2814 | asection *plt, *relplt, *dynamic, *glink; | |
2815 | bfd_vma glink_vma = 0; | |
2816 | bfd_vma resolv_vma = 0; | |
2817 | bfd_vma stub_vma; | |
2818 | asymbol *s; | |
2819 | arelent *p; | |
2820 | long count, i; | |
2821 | size_t size; | |
2822 | char *names; | |
2823 | bfd_byte buf[4]; | |
2824 | ||
2825 | *ret = NULL; | |
2826 | ||
2827 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
2828 | return 0; | |
2829 | ||
2830 | if (dynsymcount <= 0) | |
2831 | return 0; | |
2832 | ||
2833 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
2834 | if (relplt == NULL) | |
2835 | return 0; | |
2836 | ||
2837 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
2838 | if (plt == NULL) | |
2839 | return 0; | |
2840 | ||
2841 | /* Call common code to handle old-style executable PLTs. */ | |
2842 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
2843 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
2844 | dynsymcount, dynsyms, ret); | |
2845 | ||
2846 | /* If this object was prelinked, the prelinker stored the address | |
2847 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
2848 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
2849 | if (dynamic != NULL) | |
2850 | { | |
2851 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2852 | size_t extdynsize; | |
2853 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2854 | ||
2855 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
2856 | return -1; | |
2857 | ||
2858 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2859 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2860 | ||
2861 | extdyn = dynbuf; | |
2862 | extdynend = extdyn + dynamic->size; | |
2863 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2864 | { | |
2865 | Elf_Internal_Dyn dyn; | |
2866 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2867 | ||
2868 | if (dyn.d_tag == DT_NULL) | |
2869 | break; | |
2870 | ||
2871 | if (dyn.d_tag == DT_PPC_GOT) | |
2872 | { | |
2873 | unsigned int g_o_t = dyn.d_un.d_val; | |
2874 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
2875 | if (got != NULL | |
2876 | && bfd_get_section_contents (abfd, got, buf, | |
2877 | g_o_t - got->vma + 4, 4)) | |
2878 | glink_vma = bfd_get_32 (abfd, buf); | |
2879 | break; | |
2880 | } | |
2881 | } | |
2882 | free (dynbuf); | |
2883 | } | |
2884 | ||
2885 | /* Otherwise we read the first plt entry. */ | |
2886 | if (glink_vma == 0) | |
2887 | { | |
2888 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
2889 | glink_vma = bfd_get_32 (abfd, buf); | |
2890 | } | |
2891 | ||
2892 | if (glink_vma == 0) | |
2893 | return 0; | |
2894 | ||
2895 | /* The .glink section usually does not survive the final | |
2896 | link; search for the section (usually .text) where the | |
2897 | glink stubs now reside. */ | |
2898 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
2899 | if (glink == NULL) | |
2900 | return 0; | |
2901 | ||
2902 | /* Determine glink PLT resolver by reading the relative branch | |
2903 | from the first glink stub. */ | |
2904 | if (bfd_get_section_contents (abfd, glink, buf, | |
2905 | glink_vma - glink->vma, 4)) | |
2906 | { | |
2907 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2908 | ||
2909 | /* The first glink stub may either branch to the resolver ... */ | |
2910 | insn ^= B; | |
2911 | if ((insn & ~0x3fffffc) == 0) | |
2912 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
2913 | ||
2914 | /* ... or fall through a bunch of NOPs. */ | |
2915 | else if ((insn ^ B ^ NOP) == 0) | |
2916 | for (i = 4; | |
2917 | bfd_get_section_contents (abfd, glink, buf, | |
2918 | glink_vma - glink->vma + i, 4); | |
2919 | i += 4) | |
2920 | if (bfd_get_32 (abfd, buf) != NOP) | |
2921 | { | |
2922 | resolv_vma = glink_vma + i; | |
2923 | break; | |
2924 | } | |
2925 | } | |
2926 | ||
7382d32a | 2927 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
2928 | /* If the stubs are those for -shared/-pie then we might have |
2929 | multiple stubs for each plt entry. If that is the case then | |
2930 | there is no way to associate stubs with their plt entries short | |
2931 | of figuring out the GOT pointer value used in the stub. */ | |
c6dd29ce AM |
2932 | if (!is_nonpic_glink_stub (abfd, glink, |
2933 | glink_vma - GLINK_ENTRY_SIZE - glink->vma)) | |
7382d32a AM |
2934 | return 0; |
2935 | ||
468392fb AM |
2936 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
2937 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
2938 | return -1; | |
2939 | ||
468392fb AM |
2940 | size = count * sizeof (asymbol); |
2941 | p = relplt->relocation; | |
2942 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
2943 | { |
2944 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2945 | if (p->addend != 0) | |
2946 | size += sizeof ("+0x") - 1 + 8; | |
2947 | } | |
468392fb AM |
2948 | |
2949 | size += sizeof (asymbol) + sizeof ("__glink"); | |
2950 | ||
2951 | if (resolv_vma) | |
2952 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
2953 | ||
2954 | s = *ret = bfd_malloc (size); | |
2955 | if (s == NULL) | |
2956 | return -1; | |
2957 | ||
1079403c | 2958 | stub_vma = glink_vma; |
468392fb | 2959 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
2960 | p = relplt->relocation + count - 1; |
2961 | for (i = 0; i < count; i++) | |
468392fb AM |
2962 | { |
2963 | size_t len; | |
2964 | ||
2965 | *s = **p->sym_ptr_ptr; | |
2966 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2967 | we are defining a symbol, ensure one of them is set. */ | |
2968 | if ((s->flags & BSF_LOCAL) == 0) | |
2969 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2970 | s->flags |= BSF_SYNTHETIC; |
468392fb | 2971 | s->section = glink; |
1079403c AM |
2972 | stub_vma -= 16; |
2973 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
2974 | stub_vma -= 32; | |
468392fb AM |
2975 | s->value = stub_vma - glink->vma; |
2976 | s->name = names; | |
2977 | s->udata.p = NULL; | |
2978 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2979 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2980 | names += len; | |
e054468f AM |
2981 | if (p->addend != 0) |
2982 | { | |
2983 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2984 | names += sizeof ("+0x") - 1; | |
2985 | bfd_sprintf_vma (abfd, names, p->addend); | |
2986 | names += strlen (names); | |
2987 | } | |
468392fb AM |
2988 | memcpy (names, "@plt", sizeof ("@plt")); |
2989 | names += sizeof ("@plt"); | |
2990 | ++s; | |
1079403c | 2991 | --p; |
468392fb AM |
2992 | } |
2993 | ||
2994 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 2995 | memset (s, 0, sizeof *s); |
468392fb | 2996 | s->the_bfd = abfd; |
6ba2a415 | 2997 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2998 | s->section = glink; |
2999 | s->value = glink_vma - glink->vma; | |
3000 | s->name = names; | |
3001 | memcpy (names, "__glink", sizeof ("__glink")); | |
3002 | names += sizeof ("__glink"); | |
3003 | s++; | |
3004 | count++; | |
3005 | ||
3006 | if (resolv_vma) | |
3007 | { | |
3008 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 3009 | memset (s, 0, sizeof *s); |
468392fb | 3010 | s->the_bfd = abfd; |
6ba2a415 | 3011 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3012 | s->section = glink; |
3013 | s->value = resolv_vma - glink->vma; | |
3014 | s->name = names; | |
3015 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3016 | names += sizeof ("__glink_PLTresolve"); | |
3017 | s++; | |
3018 | count++; | |
3019 | } | |
3020 | ||
3021 | return count; | |
3022 | } | |
3023 | \f | |
25dbc73a AM |
3024 | /* The following functions are specific to the ELF linker, while |
3025 | functions above are used generally. They appear in this file more | |
3026 | or less in the order in which they are called. eg. | |
3027 | ppc_elf_check_relocs is called early in the link process, | |
3028 | ppc_elf_finish_dynamic_sections is one of the last functions | |
3029 | called. */ | |
252b5132 | 3030 | |
a6aa5195 | 3031 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 3032 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
3033 | struct plt_entry |
3034 | { | |
3035 | struct plt_entry *next; | |
3036 | ||
3037 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
3038 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
3039 | GOT pointer reg. It will always be at least 32768. (Current |
3040 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
3041 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
3042 | bfd_vma addend; |
3043 | ||
3044 | /* The .got2 section. */ | |
3045 | asection *sec; | |
3046 | ||
3047 | /* PLT refcount or offset. */ | |
3048 | union | |
3049 | { | |
3050 | bfd_signed_vma refcount; | |
3051 | bfd_vma offset; | |
3052 | } plt; | |
3053 | ||
3054 | /* .glink stub offset. */ | |
3055 | bfd_vma glink_offset; | |
3056 | }; | |
3057 | ||
1d483afe | 3058 | /* Of those relocs that might be copied as dynamic relocs, this function |
25dbc73a AM |
3059 | selects those that must be copied when linking a shared library, |
3060 | even when the symbol is local. */ | |
252b5132 | 3061 | |
1d483afe AM |
3062 | static int |
3063 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3064 | enum elf_ppc_reloc_type r_type) | |
3065 | { | |
3066 | switch (r_type) | |
3067 | { | |
3068 | default: | |
3069 | return 1; | |
3070 | ||
3071 | case R_PPC_REL24: | |
3072 | case R_PPC_REL14: | |
3073 | case R_PPC_REL14_BRTAKEN: | |
3074 | case R_PPC_REL14_BRNTAKEN: | |
3075 | case R_PPC_REL32: | |
3076 | return 0; | |
3077 | ||
3078 | case R_PPC_TPREL32: | |
3079 | case R_PPC_TPREL16: | |
3080 | case R_PPC_TPREL16_LO: | |
3081 | case R_PPC_TPREL16_HI: | |
3082 | case R_PPC_TPREL16_HA: | |
3083 | return !info->executable; | |
3084 | } | |
3085 | } | |
252b5132 | 3086 | |
25dbc73a AM |
3087 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3088 | copying dynamic variables from a shared lib into an app's dynbss | |
3089 | section, and instead use a dynamic relocation to point into the | |
3090 | shared lib. */ | |
3091 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 3092 | |
f95f8542 AM |
3093 | /* Used to track dynamic relocations for local symbols. */ |
3094 | struct ppc_dyn_relocs | |
3095 | { | |
3096 | struct ppc_dyn_relocs *next; | |
3097 | ||
3098 | /* The input section of the reloc. */ | |
3099 | asection *sec; | |
3100 | ||
3101 | /* Total number of relocs copied for the input section. */ | |
3102 | unsigned int count : 31; | |
3103 | ||
3104 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3105 | unsigned int ifunc : 1; | |
3106 | }; | |
3107 | ||
25dbc73a | 3108 | /* PPC ELF linker hash entry. */ |
252b5132 | 3109 | |
25dbc73a AM |
3110 | struct ppc_elf_link_hash_entry |
3111 | { | |
3112 | struct elf_link_hash_entry elf; | |
252b5132 | 3113 | |
25dbc73a AM |
3114 | /* If this symbol is used in the linker created sections, the processor |
3115 | specific backend uses this field to map the field into the offset | |
3116 | from the beginning of the section. */ | |
3117 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 3118 | |
25dbc73a | 3119 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3120 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 3121 | |
25dbc73a AM |
3122 | /* Contexts in which symbol is used in the GOT (or TOC). |
3123 | TLS_GD .. TLS_TLS bits are or'd into the mask as the | |
3124 | corresponding relocs are encountered during check_relocs. | |
3125 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3126 | indicate the corresponding GOT entry type is not needed. */ | |
3127 | #define TLS_GD 1 /* GD reloc. */ | |
3128 | #define TLS_LD 2 /* LD reloc. */ | |
3129 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3130 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3131 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3132 | #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3133 | #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */ |
25dbc73a | 3134 | char tls_mask; |
4dc4a9a5 DJ |
3135 | |
3136 | /* Nonzero if we have seen a small data relocation referring to this | |
3137 | symbol. */ | |
3138 | unsigned char has_sda_refs; | |
25dbc73a | 3139 | }; |
252b5132 | 3140 | |
25dbc73a AM |
3141 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
3142 | ||
3143 | /* PPC ELF linker hash table. */ | |
3144 | ||
3145 | struct ppc_elf_link_hash_table | |
3146 | { | |
3147 | struct elf_link_hash_table elf; | |
3148 | ||
5446cbdf AM |
3149 | /* Various options passed from the linker. */ |
3150 | struct ppc_elf_params *params; | |
3151 | ||
25dbc73a AM |
3152 | /* Short-cuts to get to dynamic linker sections. */ |
3153 | asection *got; | |
3154 | asection *relgot; | |
d7128ce4 | 3155 | asection *glink; |
25dbc73a AM |
3156 | asection *plt; |
3157 | asection *relplt; | |
e054468f AM |
3158 | asection *iplt; |
3159 | asection *reliplt; | |
25dbc73a AM |
3160 | asection *dynbss; |
3161 | asection *relbss; | |
3162 | asection *dynsbss; | |
3163 | asection *relsbss; | |
c9a2f333 | 3164 | elf_linker_section_t sdata[2]; |
25dbc73a | 3165 | asection *sbss; |
6177242a | 3166 | asection *glink_eh_frame; |
25dbc73a | 3167 | |
016687f8 AM |
3168 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
3169 | asection *srelplt2; | |
3170 | ||
3171 | /* The .got.plt section (VxWorks only)*/ | |
3172 | asection *sgotplt; | |
3173 | ||
1d483afe | 3174 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 3175 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 3176 | |
016687f8 AM |
3177 | /* The bfd that forced an old-style PLT. */ |
3178 | bfd *old_bfd; | |
5b914448 | 3179 | |
25dbc73a AM |
3180 | /* TLS local dynamic got entry handling. */ |
3181 | union { | |
3182 | bfd_signed_vma refcount; | |
3183 | bfd_vma offset; | |
3184 | } tlsld_got; | |
252b5132 | 3185 | |
c6dd29ce | 3186 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
3187 | bfd_vma glink_pltresolve; |
3188 | ||
3b36f7e6 AM |
3189 | /* Size of reserved GOT entries. */ |
3190 | unsigned int got_header_size; | |
3191 | /* Non-zero if allocating the header left a gap. */ | |
3192 | unsigned int got_gap; | |
3193 | ||
4a3dc543 RS |
3194 | /* The type of PLT we have chosen to use. */ |
3195 | enum ppc_elf_plt_type plt_type; | |
3196 | ||
9d8504b1 | 3197 | /* True if the target system is VxWorks. */ |
016687f8 | 3198 | unsigned int is_vxworks:1; |
9d8504b1 PB |
3199 | |
3200 | /* The size of PLT entries. */ | |
3201 | int plt_entry_size; | |
3202 | /* The distance between adjacent PLT slots. */ | |
3203 | int plt_slot_size; | |
3204 | /* The size of the first PLT entry. */ | |
3205 | int plt_initial_entry_size; | |
016687f8 | 3206 | |
87d72d41 AM |
3207 | /* Small local sym cache. */ |
3208 | struct sym_cache sym_cache; | |
25dbc73a | 3209 | }; |
252b5132 | 3210 | |
94caa966 AM |
3211 | /* Rename some of the generic section flags to better document how they |
3212 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
3213 | ||
3214 | /* Nonzero if this section has TLS related relocations. */ | |
3215 | #define has_tls_reloc sec_flg0 | |
3216 | ||
3217 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3218 | #define has_tls_get_addr_call sec_flg1 | |
3219 | ||
25dbc73a | 3220 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 3221 | |
25dbc73a | 3222 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
3223 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3224 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 3225 | |
25dbc73a | 3226 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 3227 | |
25dbc73a AM |
3228 | static struct bfd_hash_entry * |
3229 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3230 | struct bfd_hash_table *table, | |
3231 | const char *string) | |
252b5132 | 3232 | { |
25dbc73a AM |
3233 | /* Allocate the structure if it has not already been allocated by a |
3234 | subclass. */ | |
3235 | if (entry == NULL) | |
3236 | { | |
3237 | entry = bfd_hash_allocate (table, | |
3238 | sizeof (struct ppc_elf_link_hash_entry)); | |
3239 | if (entry == NULL) | |
3240 | return entry; | |
3241 | } | |
252b5132 | 3242 | |
25dbc73a AM |
3243 | /* Call the allocation method of the superclass. */ |
3244 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3245 | if (entry != NULL) | |
3246 | { | |
3247 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
3248 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
3249 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 3250 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 3251 | } |
252b5132 | 3252 | |
25dbc73a | 3253 | return entry; |
252b5132 | 3254 | } |
3dab13f6 | 3255 | |
25dbc73a | 3256 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 3257 | |
25dbc73a AM |
3258 | static struct bfd_link_hash_table * |
3259 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 3260 | { |
25dbc73a | 3261 | struct ppc_elf_link_hash_table *ret; |
da3a2088 | 3262 | static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12 }; |
3dab13f6 | 3263 | |
25dbc73a AM |
3264 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
3265 | if (ret == NULL) | |
3266 | return NULL; | |
3dab13f6 | 3267 | |
66eb6687 AM |
3268 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
3269 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
3270 | sizeof (struct ppc_elf_link_hash_entry), |
3271 | PPC32_ELF_DATA)) | |
3dab13f6 | 3272 | { |
25dbc73a AM |
3273 | free (ret); |
3274 | return NULL; | |
3275 | } | |
58111eb7 | 3276 | |
a6aa5195 AM |
3277 | ret->elf.init_plt_refcount.refcount = 0; |
3278 | ret->elf.init_plt_refcount.glist = NULL; | |
3279 | ret->elf.init_plt_offset.offset = 0; | |
3280 | ret->elf.init_plt_offset.glist = NULL; | |
3281 | ||
db434ba0 AM |
3282 | ret->params = &default_params; |
3283 | ||
c9a2f333 AM |
3284 | ret->sdata[0].name = ".sdata"; |
3285 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
3286 | ret->sdata[0].bss_name = ".sbss"; | |
3287 | ||
3288 | ret->sdata[1].name = ".sdata2"; | |
3289 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
3290 | ret->sdata[1].bss_name = ".sbss2"; | |
3291 | ||
9d8504b1 PB |
3292 | ret->plt_entry_size = 12; |
3293 | ret->plt_slot_size = 8; | |
3294 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 3295 | |
25dbc73a AM |
3296 | return &ret->elf.root; |
3297 | } | |
3dab13f6 | 3298 | |
5446cbdf AM |
3299 | /* Hook linker params into hash table. */ |
3300 | ||
3301 | void | |
3302 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
3303 | { | |
3304 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3305 | ||
3306 | if (htab) | |
3307 | htab->params = params; | |
3308 | } | |
3309 | ||
9d8504b1 | 3310 | /* Create .got and the related sections. */ |
3dab13f6 | 3311 | |
25dbc73a AM |
3312 | static bfd_boolean |
3313 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
3314 | { | |
3315 | struct ppc_elf_link_hash_table *htab; | |
3316 | asection *s; | |
3317 | flagword flags; | |
3dab13f6 | 3318 | |
25dbc73a AM |
3319 | if (!_bfd_elf_create_got_section (abfd, info)) |
3320 | return FALSE; | |
3dab13f6 | 3321 | |
25dbc73a | 3322 | htab = ppc_elf_hash_table (info); |
3d4d4302 | 3323 | htab->got = s = bfd_get_linker_section (abfd, ".got"); |
25dbc73a AM |
3324 | if (s == NULL) |
3325 | abort (); | |
3dab13f6 | 3326 | |
9d8504b1 PB |
3327 | if (htab->is_vxworks) |
3328 | { | |
3d4d4302 | 3329 | htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt"); |
9d8504b1 PB |
3330 | if (!htab->sgotplt) |
3331 | abort (); | |
3332 | } | |
3333 | else | |
3334 | { | |
3335 | /* The powerpc .got has a blrl instruction in it. Mark it | |
3336 | executable. */ | |
3337 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | |
3338 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3339 | if (!bfd_set_section_flags (abfd, s, flags)) | |
3340 | return FALSE; | |
3341 | } | |
3dab13f6 | 3342 | |
3d4d4302 | 3343 | htab->relgot = bfd_get_linker_section (abfd, ".rela.got"); |
64e77c6d L |
3344 | if (!htab->relgot) |
3345 | abort (); | |
3dab13f6 | 3346 | |
25dbc73a AM |
3347 | return TRUE; |
3348 | } | |
3dab13f6 | 3349 | |
93d1b056 AM |
3350 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
3351 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
3352 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
3353 | ||
3354 | static bfd_boolean | |
3355 | ppc_elf_create_linker_section (bfd *abfd, | |
3356 | struct bfd_link_info *info, | |
3357 | flagword flags, | |
3358 | elf_linker_section_t *lsect) | |
3359 | { | |
3360 | asection *s; | |
3361 | ||
3362 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3363 | | SEC_LINKER_CREATED); | |
3364 | ||
3365 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
3366 | if (s == NULL) | |
3367 | return FALSE; | |
3368 | lsect->section = s; | |
3369 | ||
3370 | /* Define the sym on the first section of this name. */ | |
3371 | s = bfd_get_section_by_name (abfd, lsect->name); | |
3372 | ||
3373 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
3374 | if (lsect->sym == NULL) | |
3375 | return FALSE; | |
3376 | lsect->sym->root.u.def.value = 0x8000; | |
3377 | return TRUE; | |
3378 | } | |
3379 | ||
e054468f AM |
3380 | static bfd_boolean |
3381 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
3382 | { | |
3383 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
3384 | asection *s; | |
3385 | flagword flags; | |
3386 | ||
3387 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
3388 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3389 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
3390 | htab->glink = s; | |
3391 | if (s == NULL | |
5446cbdf AM |
3392 | || !bfd_set_section_alignment (abfd, s, |
3393 | htab->params->ppc476_workaround ? 6 : 4)) | |
e054468f AM |
3394 | return FALSE; |
3395 | ||
6177242a AM |
3396 | if (!info->no_ld_generated_unwind_info) |
3397 | { | |
3398 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3399 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3400 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
3401 | htab->glink_eh_frame = s; | |
3402 | if (s == NULL | |
3403 | || !bfd_set_section_alignment (abfd, s, 2)) | |
3404 | return FALSE; | |
3405 | } | |
3406 | ||
e054468f AM |
3407 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
3408 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
3409 | htab->iplt = s; | |
3410 | if (s == NULL | |
3411 | || !bfd_set_section_alignment (abfd, s, 4)) | |
3412 | return FALSE; | |
3413 | ||
3414 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3415 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3416 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
e054468f AM |
3417 | htab->reliplt = s; |
3418 | if (s == NULL | |
3419 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3420 | return FALSE; | |
93d1b056 AM |
3421 | |
3422 | if (!ppc_elf_create_linker_section (abfd, info, 0, | |
3423 | &htab->sdata[0])) | |
3424 | return FALSE; | |
3425 | ||
3426 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
3427 | &htab->sdata[1])) | |
3428 | return FALSE; | |
3429 | ||
e054468f AM |
3430 | return TRUE; |
3431 | } | |
3432 | ||
25dbc73a AM |
3433 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
3434 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
3435 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 3436 | |
25dbc73a AM |
3437 | static bfd_boolean |
3438 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3439 | { | |
3440 | struct ppc_elf_link_hash_table *htab; | |
3441 | asection *s; | |
3442 | flagword flags; | |
3dab13f6 | 3443 | |
25dbc73a | 3444 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 3445 | |
25dbc73a AM |
3446 | if (htab->got == NULL |
3447 | && !ppc_elf_create_got (abfd, info)) | |
3dab13f6 AM |
3448 | return FALSE; |
3449 | ||
25dbc73a AM |
3450 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
3451 | return FALSE; | |
3dab13f6 | 3452 | |
e054468f AM |
3453 | if (htab->glink == NULL |
3454 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 3455 | return FALSE; |
3dab13f6 | 3456 | |
3d4d4302 | 3457 | htab->dynbss = bfd_get_linker_section (abfd, ".dynbss"); |
14b2f831 AM |
3458 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
3459 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 3460 | htab->dynsbss = s; |
3496cb2a | 3461 | if (s == NULL) |
25dbc73a | 3462 | return FALSE; |
3dab13f6 | 3463 | |
25dbc73a AM |
3464 | if (! info->shared) |
3465 | { | |
3d4d4302 | 3466 | htab->relbss = bfd_get_linker_section (abfd, ".rela.bss"); |
e054468f AM |
3467 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
3468 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 3469 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 3470 | htab->relsbss = s; |
25dbc73a | 3471 | if (s == NULL |
25dbc73a AM |
3472 | || ! bfd_set_section_alignment (abfd, s, 2)) |
3473 | return FALSE; | |
3474 | } | |
3dab13f6 | 3475 | |
711de32c RS |
3476 | if (htab->is_vxworks |
3477 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
3478 | return FALSE; | |
9d8504b1 | 3479 | |
3d4d4302 AM |
3480 | htab->relplt = bfd_get_linker_section (abfd, ".rela.plt"); |
3481 | htab->plt = s = bfd_get_linker_section (abfd, ".plt"); | |
25dbc73a AM |
3482 | if (s == NULL) |
3483 | abort (); | |
3dab13f6 | 3484 | |
3b36f7e6 | 3485 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
3486 | if (htab->plt_type == PLT_VXWORKS) |
3487 | /* The VxWorks PLT is a loaded section with contents. */ | |
3488 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
3489 | return bfd_set_section_flags (abfd, s, flags); |
3490 | } | |
3dab13f6 | 3491 | |
25dbc73a | 3492 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 3493 | |
25dbc73a | 3494 | static void |
fcfa13d2 | 3495 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
3496 | struct elf_link_hash_entry *dir, |
3497 | struct elf_link_hash_entry *ind) | |
3498 | { | |
3499 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 3500 | |
25dbc73a AM |
3501 | edir = (struct ppc_elf_link_hash_entry *) dir; |
3502 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 3503 | |
c79d6685 AM |
3504 | edir->tls_mask |= eind->tls_mask; |
3505 | edir->has_sda_refs |= eind->has_sda_refs; | |
3506 | ||
3507 | /* If called to transfer flags for a weakdef during processing | |
3508 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
3509 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3510 | if (!(ELIMINATE_COPY_RELOCS | |
3511 | && eind->elf.root.type != bfd_link_hash_indirect | |
3512 | && edir->elf.dynamic_adjusted)) | |
3513 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
3514 | ||
3515 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
3516 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3517 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3518 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
3519 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
3520 | ||
25dbc73a AM |
3521 | if (eind->dyn_relocs != NULL) |
3522 | { | |
3523 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 3524 | { |
6061a67d AM |
3525 | struct elf_dyn_relocs **pp; |
3526 | struct elf_dyn_relocs *p; | |
3dab13f6 | 3527 | |
fcfa13d2 | 3528 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
3529 | list. Merge any entries against the same section. */ |
3530 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 3531 | { |
6061a67d | 3532 | struct elf_dyn_relocs *q; |
25dbc73a AM |
3533 | |
3534 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3535 | if (q->sec == p->sec) | |
3536 | { | |
3537 | q->pc_count += p->pc_count; | |
3538 | q->count += p->count; | |
3539 | *pp = p->next; | |
3540 | break; | |
3541 | } | |
3542 | if (q == NULL) | |
3543 | pp = &p->next; | |
3dab13f6 | 3544 | } |
25dbc73a | 3545 | *pp = edir->dyn_relocs; |
3dab13f6 | 3546 | } |
25dbc73a AM |
3547 | |
3548 | edir->dyn_relocs = eind->dyn_relocs; | |
3549 | eind->dyn_relocs = NULL; | |
3dab13f6 | 3550 | } |
3dab13f6 | 3551 | |
68ba6d40 AM |
3552 | /* If we were called to copy over info for a weak sym, that's all. |
3553 | You might think dyn_relocs need not be copied over; After all, | |
3554 | both syms will be dynamic or both non-dynamic so we're just | |
68ffbac6 | 3555 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
68ba6d40 AM |
3556 | code in ppc_elf_adjust_dynamic_symbol needs to check for |
3557 | dyn_relocs in read-only sections, and it does so on what is the | |
3558 | DIR sym here. */ | |
3559 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3560 | return; | |
3561 | ||
a6aa5195 AM |
3562 | /* Copy over the GOT refcount entries that we may have already seen to |
3563 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
3564 | edir->elf.got.refcount += eind->elf.got.refcount; |
3565 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
3566 | |
3567 | /* And plt entries. */ | |
3568 | if (eind->elf.plt.plist != NULL) | |
3569 | { | |
3570 | if (edir->elf.plt.plist != NULL) | |
3571 | { | |
3572 | struct plt_entry **entp; | |
3573 | struct plt_entry *ent; | |
3574 | ||
3575 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3576 | { | |
3577 | struct plt_entry *dent; | |
3578 | ||
3579 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3580 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
3581 | { | |
3582 | dent->plt.refcount += ent->plt.refcount; | |
3583 | *entp = ent->next; | |
3584 | break; | |
3585 | } | |
3586 | if (dent == NULL) | |
3587 | entp = &ent->next; | |
3588 | } | |
3589 | *entp = edir->elf.plt.plist; | |
3590 | } | |
3591 | ||
3592 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3593 | eind->elf.plt.plist = NULL; | |
3594 | } | |
3595 | ||
fcfa13d2 | 3596 | if (eind->elf.dynindx != -1) |
25dbc73a | 3597 | { |
fcfa13d2 AM |
3598 | if (edir->elf.dynindx != -1) |
3599 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3600 | edir->elf.dynstr_index); | |
a6aa5195 AM |
3601 | edir->elf.dynindx = eind->elf.dynindx; |
3602 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3603 | eind->elf.dynindx = -1; | |
3604 | eind->elf.dynstr_index = 0; | |
25dbc73a | 3605 | } |
25dbc73a | 3606 | } |
3dab13f6 | 3607 | |
25dbc73a AM |
3608 | /* Hook called by the linker routine which adds symbols from an object |
3609 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 3610 | |
25dbc73a AM |
3611 | static bfd_boolean |
3612 | ppc_elf_add_symbol_hook (bfd *abfd, | |
3613 | struct bfd_link_info *info, | |
3614 | Elf_Internal_Sym *sym, | |
3615 | const char **namep ATTRIBUTE_UNUSED, | |
3616 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3617 | asection **secp, | |
3618 | bfd_vma *valp) | |
3619 | { | |
3620 | if (sym->st_shndx == SHN_COMMON | |
3621 | && !info->relocatable | |
0c8d6e5c AM |
3622 | && is_ppc_elf (info->output_bfd) |
3623 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
3624 | { |
3625 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3626 | put into .sbss. */ | |
3627 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 3628 | |
25dbc73a AM |
3629 | htab = ppc_elf_hash_table (info); |
3630 | if (htab->sbss == NULL) | |
3631 | { | |
644285ef | 3632 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 3633 | |
644285ef AM |
3634 | if (!htab->elf.dynobj) |
3635 | htab->elf.dynobj = abfd; | |
3636 | ||
3496cb2a L |
3637 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
3638 | ".sbss", | |
3639 | flags); | |
3640 | if (htab->sbss == NULL) | |
25dbc73a | 3641 | return FALSE; |
3dab13f6 | 3642 | } |
3dab13f6 | 3643 | |
25dbc73a AM |
3644 | *secp = htab->sbss; |
3645 | *valp = sym->st_size; | |
3646 | } | |
3dab13f6 | 3647 | |
f1885d1e AM |
3648 | if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
3649 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE) | |
3650 | && (abfd->flags & DYNAMIC) == 0 | |
3651 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
f64b2e8d | 3652 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
e054468f | 3653 | |
25dbc73a | 3654 | return TRUE; |
3dab13f6 AM |
3655 | } |
3656 | \f | |
25dbc73a AM |
3657 | /* Find a linker generated pointer with a given addend and type. */ |
3658 | ||
3659 | static elf_linker_section_pointers_t * | |
3660 | elf_find_pointer_linker_section | |
3661 | (elf_linker_section_pointers_t *linker_pointers, | |
3662 | bfd_vma addend, | |
3663 | elf_linker_section_t *lsect) | |
252b5132 | 3664 | { |
25dbc73a AM |
3665 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
3666 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
3667 | return linker_pointers; | |
252b5132 | 3668 | |
25dbc73a AM |
3669 | return NULL; |
3670 | } | |
3671 | ||
3672 | /* Allocate a pointer to live in a linker created section. */ | |
3673 | ||
3674 | static bfd_boolean | |
93d1b056 AM |
3675 | elf_allocate_pointer_linker_section (bfd *abfd, |
3676 | elf_linker_section_t *lsect, | |
3677 | struct elf_link_hash_entry *h, | |
3678 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
3679 | { |
3680 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
3681 | elf_linker_section_pointers_t *linker_section_ptr; | |
3682 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
3683 | bfd_size_type amt; | |
3684 | ||
3685 | BFD_ASSERT (lsect != NULL); | |
3686 | ||
3687 | /* Is this a global symbol? */ | |
3688 | if (h != NULL) | |
3689 | { | |
3690 | struct ppc_elf_link_hash_entry *eh; | |
3691 | ||
3692 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3693 | eh = (struct ppc_elf_link_hash_entry *) h; | |
3694 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
3695 | rel->r_addend, | |
3696 | lsect)) | |
3697 | return TRUE; | |
3698 | ||
3699 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
3700 | } |
3701 | else | |
3702 | { | |
0c8d6e5c | 3703 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3704 | |
25dbc73a AM |
3705 | /* Allocation of a pointer to a local symbol. */ |
3706 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
3707 | ||
3708 | /* Allocate a table to hold the local symbols if first time. */ | |
3709 | if (!ptr) | |
3710 | { | |
0ffa91dd | 3711 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
3712 | |
3713 | amt = num_symbols; | |
3714 | amt *= sizeof (elf_linker_section_pointers_t *); | |
3715 | ptr = bfd_zalloc (abfd, amt); | |
3716 | ||
3717 | if (!ptr) | |
3718 | return FALSE; | |
3719 | ||
3720 | elf_local_ptr_offsets (abfd) = ptr; | |
3721 | } | |
3722 | ||
3723 | /* Has this symbol already been allocated? If so, our work is done. */ | |
3724 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
3725 | rel->r_addend, | |
3726 | lsect)) | |
3727 | return TRUE; | |
252b5132 | 3728 | |
25dbc73a | 3729 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 3730 | } |
41fcb14e | 3731 | |
25dbc73a AM |
3732 | /* Allocate space for a pointer in the linker section, and allocate |
3733 | a new pointer record from internal memory. */ | |
3734 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
3735 | amt = sizeof (elf_linker_section_pointers_t); | |
3736 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 3737 | |
25dbc73a | 3738 | if (!linker_section_ptr) |
7619e7c7 | 3739 | return FALSE; |
41fcb14e | 3740 | |
25dbc73a AM |
3741 | linker_section_ptr->next = *ptr_linker_section_ptr; |
3742 | linker_section_ptr->addend = rel->r_addend; | |
3743 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 3744 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 3745 | |
93d1b056 AM |
3746 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
3747 | return FALSE; | |
25dbc73a AM |
3748 | linker_section_ptr->offset = lsect->section->size; |
3749 | lsect->section->size += 4; | |
7619e7c7 | 3750 | |
25dbc73a AM |
3751 | #ifdef DEBUG |
3752 | fprintf (stderr, | |
3753 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
3754 | lsect->name, (long) linker_section_ptr->offset, | |
3755 | (long) lsect->section->size); | |
3756 | #endif | |
7619e7c7 AM |
3757 | |
3758 | return TRUE; | |
41fcb14e AM |
3759 | } |
3760 | ||
e054468f | 3761 | static struct plt_entry ** |
25dbc73a AM |
3762 | update_local_sym_info (bfd *abfd, |
3763 | Elf_Internal_Shdr *symtab_hdr, | |
3764 | unsigned long r_symndx, | |
3765 | int tls_type) | |
252b5132 | 3766 | { |
25dbc73a | 3767 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 3768 | struct plt_entry **local_plt; |
25dbc73a | 3769 | char *local_got_tls_masks; |
252b5132 | 3770 | |
25dbc73a | 3771 | if (local_got_refcounts == NULL) |
252b5132 | 3772 | { |
25dbc73a AM |
3773 | bfd_size_type size = symtab_hdr->sh_info; |
3774 | ||
e054468f AM |
3775 | size *= (sizeof (*local_got_refcounts) |
3776 | + sizeof (*local_plt) | |
3777 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
3778 | local_got_refcounts = bfd_zalloc (abfd, size); |
3779 | if (local_got_refcounts == NULL) | |
e054468f | 3780 | return NULL; |
25dbc73a | 3781 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 3782 | } |
41fcb14e | 3783 | |
e054468f AM |
3784 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
3785 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
25dbc73a | 3786 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
3787 | if (tls_type != PLT_IFUNC) |
3788 | local_got_refcounts[r_symndx] += 1; | |
3789 | return local_plt + r_symndx; | |
25dbc73a | 3790 | } |
41fcb14e | 3791 | |
a6aa5195 | 3792 | static bfd_boolean |
3ec01793 | 3793 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
3794 | asection *sec, bfd_vma addend) |
3795 | { | |
3796 | struct plt_entry *ent; | |
3797 | ||
32af9f6e AM |
3798 | if (addend < 32768) |
3799 | sec = NULL; | |
3ec01793 | 3800 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3801 | if (ent->sec == sec && ent->addend == addend) |
3802 | break; | |
3803 | if (ent == NULL) | |
3804 | { | |
3805 | bfd_size_type amt = sizeof (*ent); | |
3806 | ent = bfd_alloc (abfd, amt); | |
3807 | if (ent == NULL) | |
3808 | return FALSE; | |
3ec01793 | 3809 | ent->next = *plist; |
a6aa5195 AM |
3810 | ent->sec = sec; |
3811 | ent->addend = addend; | |
3812 | ent->plt.refcount = 0; | |
3ec01793 | 3813 | *plist = ent; |
a6aa5195 AM |
3814 | } |
3815 | ent->plt.refcount += 1; | |
3816 | return TRUE; | |
3817 | } | |
3818 | ||
3819 | static struct plt_entry * | |
3ec01793 | 3820 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
3821 | { |
3822 | struct plt_entry *ent; | |
3823 | ||
3824 | if (addend < 32768) | |
3825 | sec = NULL; | |
3ec01793 | 3826 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
3827 | if (ent->sec == sec && ent->addend == addend) |
3828 | break; | |
3829 | return ent; | |
3830 | } | |
3831 | ||
e054468f AM |
3832 | static bfd_boolean |
3833 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
3834 | { | |
3835 | return (r_type == R_PPC_PLTREL24 | |
3836 | || r_type == R_PPC_LOCAL24PC | |
3837 | || r_type == R_PPC_REL24 | |
3838 | || r_type == R_PPC_REL14 | |
3839 | || r_type == R_PPC_REL14_BRTAKEN | |
3840 | || r_type == R_PPC_REL14_BRNTAKEN | |
3841 | || r_type == R_PPC_ADDR24 | |
3842 | || r_type == R_PPC_ADDR14 | |
3843 | || r_type == R_PPC_ADDR14_BRTAKEN | |
3844 | || r_type == R_PPC_ADDR14_BRNTAKEN); | |
3845 | } | |
3846 | ||
25dbc73a AM |
3847 | static void |
3848 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
3849 | { | |
3850 | (*_bfd_error_handler) | |
3851 | (_("%B: relocation %s cannot be used when making a shared object"), | |
3852 | abfd, | |
3853 | ppc_elf_howto_table[r_type]->name); | |
3854 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
3855 | } |
3856 | ||
25dbc73a AM |
3857 | /* Look through the relocs for a section during the first phase, and |
3858 | allocate space in the global offset table or procedure linkage | |
3859 | table. */ | |
252b5132 | 3860 | |
b34976b6 | 3861 | static bfd_boolean |
25dbc73a AM |
3862 | ppc_elf_check_relocs (bfd *abfd, |
3863 | struct bfd_link_info *info, | |
3864 | asection *sec, | |
3865 | const Elf_Internal_Rela *relocs) | |
252b5132 | 3866 | { |
7619e7c7 | 3867 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
3868 | Elf_Internal_Shdr *symtab_hdr; |
3869 | struct elf_link_hash_entry **sym_hashes; | |
3870 | const Elf_Internal_Rela *rel; | |
3871 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 3872 | asection *got2, *sreloc; |
727fc41e | 3873 | struct elf_link_hash_entry *tga; |
25dbc73a AM |
3874 | |
3875 | if (info->relocatable) | |
3876 | return TRUE; | |
252b5132 | 3877 | |
c87b5a93 AM |
3878 | /* Don't do anything special with non-loaded, non-alloced sections. |
3879 | In particular, any relocs in such sections should not affect GOT | |
3880 | and PLT reference counting (ie. we don't allow them to create GOT | |
3881 | or PLT entries), there's no possibility or desire to optimize TLS | |
3882 | relocs, and there's not much point in propagating relocs to shared | |
3883 | libs that the dynamic linker won't relocate. */ | |
3884 | if ((sec->flags & SEC_ALLOC) == 0) | |
3885 | return TRUE; | |
3886 | ||
252b5132 | 3887 | #ifdef DEBUG |
25dbc73a AM |
3888 | _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B", |
3889 | sec, abfd); | |
252b5132 RH |
3890 | #endif |
3891 | ||
0c8d6e5c | 3892 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 3893 | |
25dbc73a AM |
3894 | /* Initialize howto table if not already done. */ |
3895 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
3896 | ppc_elf_howto_init (); | |
3897 | ||
7619e7c7 | 3898 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
3899 | if (htab->glink == NULL) |
3900 | { | |
3901 | if (htab->elf.dynobj == NULL) | |
3902 | htab->elf.dynobj = abfd; | |
3903 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
3904 | return FALSE; | |
3905 | } | |
727fc41e AM |
3906 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
3907 | FALSE, FALSE, TRUE); | |
0ffa91dd | 3908 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 3909 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 3910 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
3911 | sreloc = NULL; |
3912 | ||
3913 | rel_end = relocs + sec->reloc_count; | |
3914 | for (rel = relocs; rel < rel_end; rel++) | |
3915 | { | |
3916 | unsigned long r_symndx; | |
3917 | enum elf_ppc_reloc_type r_type; | |
3918 | struct elf_link_hash_entry *h; | |
727fc41e | 3919 | int tls_type; |
25dbc73a AM |
3920 | |
3921 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3922 | if (r_symndx < symtab_hdr->sh_info) | |
3923 | h = NULL; | |
3924 | else | |
973a3492 L |
3925 | { |
3926 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3927 | while (h->root.type == bfd_link_hash_indirect | |
3928 | || h->root.type == bfd_link_hash_warning) | |
3929 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
3930 | |
3931 | /* PR15323, ref flags aren't set for references in the same | |
3932 | object. */ | |
3933 | h->root.non_ir_ref = 1; | |
973a3492 | 3934 | } |
25dbc73a AM |
3935 | |
3936 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
3937 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
3938 | startup code. */ | |
3b36f7e6 AM |
3939 | if (h != NULL |
3940 | && htab->got == NULL | |
3941 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
252b5132 | 3942 | { |
3b36f7e6 AM |
3943 | if (htab->elf.dynobj == NULL) |
3944 | htab->elf.dynobj = abfd; | |
3945 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3946 | return FALSE; | |
3947 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 3948 | } |
252b5132 | 3949 | |
727fc41e | 3950 | tls_type = 0; |
de972ffa | 3951 | r_type = ELF32_R_TYPE (rel->r_info); |
06a162cf | 3952 | if (h == NULL && !htab->is_vxworks) |
e054468f | 3953 | { |
06a162cf AM |
3954 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3955 | abfd, r_symndx); | |
3956 | if (isym == NULL) | |
3957 | return FALSE; | |
3958 | ||
0bed072f | 3959 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 3960 | { |
06a162cf | 3961 | struct plt_entry **ifunc; |
06a162cf | 3962 | |
0bed072f | 3963 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf AM |
3964 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
3965 | PLT_IFUNC); | |
3966 | if (ifunc == NULL) | |
e054468f AM |
3967 | return FALSE; |
3968 | ||
06a162cf AM |
3969 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
3970 | In a non-pie executable even when there are | |
3971 | no plt calls. */ | |
0bed072f AM |
3972 | if (!info->shared |
3973 | || is_branch_reloc (r_type)) | |
e054468f | 3974 | { |
0bed072f AM |
3975 | bfd_vma addend = 0; |
3976 | if (r_type == R_PPC_PLTREL24) | |
3977 | { | |
3978 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
3979 | if (info->shared) | |
3980 | addend = rel->r_addend; | |
3981 | } | |
3982 | if (!update_plt_info (abfd, ifunc, got2, addend)) | |
3983 | return FALSE; | |
e054468f AM |
3984 | } |
3985 | } | |
25f23106 AM |
3986 | } |
3987 | ||
de972ffa AM |
3988 | if (!htab->is_vxworks |
3989 | && is_branch_reloc (r_type) | |
3990 | && h != NULL | |
3991 | && h == tga) | |
25f23106 | 3992 | { |
de972ffa AM |
3993 | if (rel != relocs |
3994 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
3995 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
3996 | /* We have a new-style __tls_get_addr call with a marker | |
3997 | reloc. */ | |
3998 | ; | |
3999 | else | |
4000 | /* Mark this section as having an old-style call. */ | |
4001 | sec->has_tls_get_addr_call = 1; | |
e054468f | 4002 | } |
727fc41e | 4003 | |
25dbc73a AM |
4004 | switch (r_type) |
4005 | { | |
727fc41e AM |
4006 | case R_PPC_TLSGD: |
4007 | case R_PPC_TLSLD: | |
4008 | /* These special tls relocs tie a call to __tls_get_addr with | |
4009 | its parameter symbol. */ | |
4010 | break; | |
4011 | ||
25dbc73a AM |
4012 | case R_PPC_GOT_TLSLD16: |
4013 | case R_PPC_GOT_TLSLD16_LO: | |
4014 | case R_PPC_GOT_TLSLD16_HI: | |
4015 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
4016 | tls_type = TLS_TLS | TLS_LD; |
4017 | goto dogottls; | |
252b5132 | 4018 | |
25dbc73a AM |
4019 | case R_PPC_GOT_TLSGD16: |
4020 | case R_PPC_GOT_TLSGD16_LO: | |
4021 | case R_PPC_GOT_TLSGD16_HI: | |
4022 | case R_PPC_GOT_TLSGD16_HA: | |
4023 | tls_type = TLS_TLS | TLS_GD; | |
4024 | goto dogottls; | |
4025 | ||
4026 | case R_PPC_GOT_TPREL16: | |
4027 | case R_PPC_GOT_TPREL16_LO: | |
4028 | case R_PPC_GOT_TPREL16_HI: | |
4029 | case R_PPC_GOT_TPREL16_HA: | |
afb93314 | 4030 | if (info->shared) |
25dbc73a AM |
4031 | info->flags |= DF_STATIC_TLS; |
4032 | tls_type = TLS_TLS | TLS_TPREL; | |
4033 | goto dogottls; | |
4034 | ||
4035 | case R_PPC_GOT_DTPREL16: | |
4036 | case R_PPC_GOT_DTPREL16_LO: | |
4037 | case R_PPC_GOT_DTPREL16_HI: | |
4038 | case R_PPC_GOT_DTPREL16_HA: | |
4039 | tls_type = TLS_TLS | TLS_DTPREL; | |
4040 | dogottls: | |
4041 | sec->has_tls_reloc = 1; | |
4042 | /* Fall thru */ | |
252b5132 | 4043 | |
25dbc73a AM |
4044 | /* GOT16 relocations */ |
4045 | case R_PPC_GOT16: | |
4046 | case R_PPC_GOT16_LO: | |
4047 | case R_PPC_GOT16_HI: | |
4048 | case R_PPC_GOT16_HA: | |
4049 | /* This symbol requires a global offset table entry. */ | |
4050 | if (htab->got == NULL) | |
4051 | { | |
4052 | if (htab->elf.dynobj == NULL) | |
4053 | htab->elf.dynobj = abfd; | |
4054 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
4055 | return FALSE; | |
4056 | } | |
4057 | if (h != NULL) | |
4058 | { | |
4059 | h->got.refcount += 1; | |
4060 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
4061 | } | |
4062 | else | |
4063 | /* This is a global offset table entry for a local symbol. */ | |
4064 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
4065 | return FALSE; | |
91e21fb7 AM |
4066 | |
4067 | /* We may also need a plt entry if the symbol turns out to be | |
4068 | an ifunc. */ | |
4069 | if (h != NULL && !info->shared) | |
4070 | { | |
4071 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4072 | return FALSE; | |
4073 | } | |
25dbc73a | 4074 | break; |
252b5132 | 4075 | |
25dbc73a AM |
4076 | /* Indirect .sdata relocation. */ |
4077 | case R_PPC_EMB_SDAI16: | |
4078 | if (info->shared) | |
4079 | { | |
4080 | bad_shared_reloc (abfd, r_type); | |
4081 | return FALSE; | |
4082 | } | |
93d1b056 AM |
4083 | htab->sdata[0].sym->ref_regular = 1; |
4084 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
4085 | h, rel)) | |
25dbc73a | 4086 | return FALSE; |
046183de AM |
4087 | if (h != NULL) |
4088 | { | |
4089 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4090 | h->non_got_ref = TRUE; | |
4091 | } | |
25dbc73a | 4092 | break; |
252b5132 | 4093 | |
25dbc73a AM |
4094 | /* Indirect .sdata2 relocation. */ |
4095 | case R_PPC_EMB_SDA2I16: | |
4096 | if (info->shared) | |
4097 | { | |
4098 | bad_shared_reloc (abfd, r_type); | |
4099 | return FALSE; | |
4100 | } | |
93d1b056 AM |
4101 | htab->sdata[1].sym->ref_regular = 1; |
4102 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
4103 | h, rel)) | |
25dbc73a | 4104 | return FALSE; |
046183de AM |
4105 | if (h != NULL) |
4106 | { | |
4107 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4108 | h->non_got_ref = TRUE; | |
4109 | } | |
25dbc73a | 4110 | break; |
252b5132 | 4111 | |
93d1b056 AM |
4112 | case R_PPC_SDAREL16: |
4113 | htab->sdata[0].sym->ref_regular = 1; | |
4114 | /* Fall thru */ | |
4115 | ||
b9c361e0 JL |
4116 | case R_PPC_VLE_SDAREL_LO16A: |
4117 | case R_PPC_VLE_SDAREL_LO16D: | |
4118 | case R_PPC_VLE_SDAREL_HI16A: | |
4119 | case R_PPC_VLE_SDAREL_HI16D: | |
4120 | case R_PPC_VLE_SDAREL_HA16A: | |
4121 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
4122 | if (h != NULL) |
4123 | { | |
4124 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4125 | h->non_got_ref = TRUE; | |
4126 | } | |
4127 | break; | |
4128 | ||
b9c361e0 JL |
4129 | case R_PPC_VLE_REL8: |
4130 | case R_PPC_VLE_REL15: | |
4131 | case R_PPC_VLE_REL24: | |
4132 | case R_PPC_VLE_LO16A: | |
4133 | case R_PPC_VLE_LO16D: | |
4134 | case R_PPC_VLE_HI16A: | |
4135 | case R_PPC_VLE_HI16D: | |
4136 | case R_PPC_VLE_HA16A: | |
4137 | case R_PPC_VLE_HA16D: | |
4138 | break; | |
4139 | ||
25dbc73a | 4140 | case R_PPC_EMB_SDA2REL: |
046183de AM |
4141 | if (info->shared) |
4142 | { | |
4143 | bad_shared_reloc (abfd, r_type); | |
4144 | return FALSE; | |
4145 | } | |
93d1b056 | 4146 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
4147 | if (h != NULL) |
4148 | { | |
4149 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4150 | h->non_got_ref = TRUE; | |
4151 | } | |
4152 | break; | |
4153 | ||
b9c361e0 JL |
4154 | case R_PPC_VLE_SDA21_LO: |
4155 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
4156 | case R_PPC_EMB_SDA21: |
4157 | case R_PPC_EMB_RELSDA: | |
046183de AM |
4158 | if (info->shared) |
4159 | { | |
4160 | bad_shared_reloc (abfd, r_type); | |
4161 | return FALSE; | |
4162 | } | |
046183de AM |
4163 | if (h != NULL) |
4164 | { | |
4165 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
4166 | h->non_got_ref = TRUE; | |
4167 | } | |
4168 | break; | |
4169 | ||
25dbc73a AM |
4170 | case R_PPC_EMB_NADDR32: |
4171 | case R_PPC_EMB_NADDR16: | |
4172 | case R_PPC_EMB_NADDR16_LO: | |
4173 | case R_PPC_EMB_NADDR16_HI: | |
4174 | case R_PPC_EMB_NADDR16_HA: | |
4175 | if (info->shared) | |
4176 | { | |
4177 | bad_shared_reloc (abfd, r_type); | |
4178 | return FALSE; | |
4179 | } | |
4dc4a9a5 | 4180 | if (h != NULL) |
046183de | 4181 | h->non_got_ref = TRUE; |
25dbc73a | 4182 | break; |
252b5132 | 4183 | |
25dbc73a | 4184 | case R_PPC_PLTREL24: |
de972ffa | 4185 | if (h == NULL) |
6d78d0b9 AM |
4186 | break; |
4187 | /* Fall through */ | |
4188 | case R_PPC_PLT32: | |
25dbc73a AM |
4189 | case R_PPC_PLTREL32: |
4190 | case R_PPC_PLT16_LO: | |
4191 | case R_PPC_PLT16_HI: | |
4192 | case R_PPC_PLT16_HA: | |
4193 | #ifdef DEBUG | |
4194 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
4195 | #endif | |
4196 | /* This symbol requires a procedure linkage table entry. We | |
4197 | actually build the entry in finish_dynamic_symbol, | |
4198 | because this might be a case of linking PIC code without | |
4199 | linking in any dynamic objects, in which case we don't | |
4200 | need to generate a procedure linkage table after all. */ | |
7619e7c7 | 4201 | |
25dbc73a AM |
4202 | if (h == NULL) |
4203 | { | |
4204 | /* It does not make sense to have a procedure linkage | |
4205 | table entry for a local symbol. */ | |
8de848d8 | 4206 | info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"), |
25f53a85 AM |
4207 | abfd, sec, rel->r_offset, |
4208 | ppc_elf_howto_table[r_type]->name); | |
25dbc73a AM |
4209 | bfd_set_error (bfd_error_bad_value); |
4210 | return FALSE; | |
4211 | } | |
a6aa5195 AM |
4212 | else |
4213 | { | |
016687f8 | 4214 | bfd_vma addend = 0; |
ee05f2fe | 4215 | |
016687f8 AM |
4216 | if (r_type == R_PPC_PLTREL24) |
4217 | { | |
4218 | ppc_elf_tdata (abfd)->makes_plt_call = 1; | |
a877a2b6 AM |
4219 | if (info->shared) |
4220 | addend = rel->r_addend; | |
016687f8 | 4221 | } |
a6aa5195 | 4222 | h->needs_plt = 1; |
32af9f6e | 4223 | if (!update_plt_info (abfd, &h->plt.plist, got2, addend)) |
a6aa5195 AM |
4224 | return FALSE; |
4225 | } | |
25dbc73a | 4226 | break; |
ee05f2fe | 4227 | |
25dbc73a AM |
4228 | /* The following relocations don't need to propagate the |
4229 | relocation if linking a shared object since they are | |
4230 | section relative. */ | |
4231 | case R_PPC_SECTOFF: | |
4232 | case R_PPC_SECTOFF_LO: | |
4233 | case R_PPC_SECTOFF_HI: | |
4234 | case R_PPC_SECTOFF_HA: | |
4235 | case R_PPC_DTPREL16: | |
4236 | case R_PPC_DTPREL16_LO: | |
4237 | case R_PPC_DTPREL16_HI: | |
4238 | case R_PPC_DTPREL16_HA: | |
4239 | case R_PPC_TOC16: | |
4240 | break; | |
252b5132 | 4241 | |
d7128ce4 AM |
4242 | case R_PPC_REL16: |
4243 | case R_PPC_REL16_LO: | |
4244 | case R_PPC_REL16_HI: | |
4245 | case R_PPC_REL16_HA: | |
016687f8 | 4246 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
4247 | break; |
4248 | ||
a6aa5195 | 4249 | /* These are just markers. */ |
25dbc73a AM |
4250 | case R_PPC_TLS: |
4251 | case R_PPC_EMB_MRKREF: | |
4252 | case R_PPC_NONE: | |
4253 | case R_PPC_max: | |
32af9f6e AM |
4254 | case R_PPC_RELAX: |
4255 | case R_PPC_RELAX_PLT: | |
4256 | case R_PPC_RELAX_PLTREL24: | |
25dbc73a | 4257 | break; |
252b5132 | 4258 | |
25dbc73a AM |
4259 | /* These should only appear in dynamic objects. */ |
4260 | case R_PPC_COPY: | |
4261 | case R_PPC_GLOB_DAT: | |
4262 | case R_PPC_JMP_SLOT: | |
4263 | case R_PPC_RELATIVE: | |
e054468f | 4264 | case R_PPC_IRELATIVE: |
25dbc73a | 4265 | break; |
252b5132 | 4266 | |
25dbc73a AM |
4267 | /* These aren't handled yet. We'll report an error later. */ |
4268 | case R_PPC_ADDR30: | |
4269 | case R_PPC_EMB_RELSEC16: | |
4270 | case R_PPC_EMB_RELST_LO: | |
4271 | case R_PPC_EMB_RELST_HI: | |
4272 | case R_PPC_EMB_RELST_HA: | |
4273 | case R_PPC_EMB_BIT_FLD: | |
4274 | break; | |
252b5132 | 4275 | |
25dbc73a AM |
4276 | /* This refers only to functions defined in the shared library. */ |
4277 | case R_PPC_LOCAL24PC: | |
727fc41e | 4278 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
4279 | { |
4280 | htab->plt_type = PLT_OLD; | |
4281 | htab->old_bfd = abfd; | |
4282 | } | |
c7e17e05 AM |
4283 | if (h != NULL && h->type == STT_GNU_IFUNC) |
4284 | { | |
4285 | if (info->shared) | |
4286 | { | |
4287 | info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"), | |
4288 | abfd, sec, rel->r_offset, | |
4289 | h->root.root.string); | |
4290 | bfd_set_error (bfd_error_bad_value); | |
4291 | return FALSE; | |
4292 | } | |
4293 | h->needs_plt = 1; | |
4294 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
4295 | return FALSE; | |
4296 | } | |
25dbc73a | 4297 | break; |
252b5132 | 4298 | |
25dbc73a AM |
4299 | /* This relocation describes the C++ object vtable hierarchy. |
4300 | Reconstruct it for later use during GC. */ | |
4301 | case R_PPC_GNU_VTINHERIT: | |
4302 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4303 | return FALSE; | |
4304 | break; | |
252b5132 | 4305 | |
25dbc73a AM |
4306 | /* This relocation describes which C++ vtable entries are actually |
4307 | used. Record for later use during GC. */ | |
4308 | case R_PPC_GNU_VTENTRY: | |
d17e0c6e JB |
4309 | BFD_ASSERT (h != NULL); |
4310 | if (h != NULL | |
4311 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
25dbc73a AM |
4312 | return FALSE; |
4313 | break; | |
252b5132 | 4314 | |
25dbc73a AM |
4315 | /* We shouldn't really be seeing these. */ |
4316 | case R_PPC_TPREL32: | |
1d483afe AM |
4317 | case R_PPC_TPREL16: |
4318 | case R_PPC_TPREL16_LO: | |
4319 | case R_PPC_TPREL16_HI: | |
4320 | case R_PPC_TPREL16_HA: | |
afb93314 | 4321 | if (info->shared) |
25dbc73a AM |
4322 | info->flags |= DF_STATIC_TLS; |
4323 | goto dodyn; | |
252b5132 | 4324 | |
25dbc73a AM |
4325 | /* Nor these. */ |
4326 | case R_PPC_DTPMOD32: | |
4327 | case R_PPC_DTPREL32: | |
4328 | goto dodyn; | |
252b5132 | 4329 | |
9edfd1af AM |
4330 | case R_PPC_REL32: |
4331 | if (h == NULL | |
4332 | && got2 != NULL | |
4333 | && (sec->flags & SEC_CODE) != 0 | |
a877a2b6 | 4334 | && info->shared |
4a3dc543 | 4335 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
4336 | { |
4337 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
4338 | the start of a function, which assembles to a REL32 | |
4339 | reference to .got2. If we detect one of these, then | |
4340 | force the old PLT layout because the linker cannot | |
4341 | reliably deduce the GOT pointer value needed for | |
4342 | PLT call stubs. */ | |
4343 | asection *s; | |
87d72d41 | 4344 | Elf_Internal_Sym *isym; |
9edfd1af | 4345 | |
87d72d41 AM |
4346 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4347 | abfd, r_symndx); | |
4348 | if (isym == NULL) | |
4349 | return FALSE; | |
4350 | ||
4351 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 4352 | if (s == got2) |
016687f8 AM |
4353 | { |
4354 | htab->plt_type = PLT_OLD; | |
4355 | htab->old_bfd = abfd; | |
4356 | } | |
9edfd1af | 4357 | } |
7123df0e | 4358 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 4359 | break; |
625af618 AM |
4360 | /* fall through */ |
4361 | ||
4362 | case R_PPC_ADDR32: | |
4363 | case R_PPC_ADDR16: | |
4364 | case R_PPC_ADDR16_LO: | |
4365 | case R_PPC_ADDR16_HI: | |
4366 | case R_PPC_ADDR16_HA: | |
4367 | case R_PPC_UADDR32: | |
4368 | case R_PPC_UADDR16: | |
4369 | if (h != NULL && !info->shared) | |
4370 | { | |
4371 | /* We may need a plt entry if the symbol turns out to be | |
4372 | a function defined in a dynamic object. */ | |
3ec01793 | 4373 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
4374 | return FALSE; |
4375 | ||
4376 | /* We may need a copy reloc too. */ | |
4377 | h->non_got_ref = 1; | |
4378 | h->pointer_equality_needed = 1; | |
4379 | } | |
4380 | goto dodyn; | |
9edfd1af | 4381 | |
25dbc73a AM |
4382 | case R_PPC_REL24: |
4383 | case R_PPC_REL14: | |
4384 | case R_PPC_REL14_BRTAKEN: | |
4385 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 4386 | if (h == NULL) |
25dbc73a | 4387 | break; |
7123df0e | 4388 | if (h == htab->elf.hgot) |
d7128ce4 | 4389 | { |
7123df0e | 4390 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
4391 | { |
4392 | htab->plt_type = PLT_OLD; | |
4393 | htab->old_bfd = abfd; | |
4394 | } | |
d7128ce4 AM |
4395 | break; |
4396 | } | |
25dbc73a | 4397 | /* fall through */ |
ee05f2fe | 4398 | |
25dbc73a | 4399 | case R_PPC_ADDR24: |
25dbc73a AM |
4400 | case R_PPC_ADDR14: |
4401 | case R_PPC_ADDR14_BRTAKEN: | |
4402 | case R_PPC_ADDR14_BRNTAKEN: | |
25dbc73a AM |
4403 | if (h != NULL && !info->shared) |
4404 | { | |
4405 | /* We may need a plt entry if the symbol turns out to be | |
4406 | a function defined in a dynamic object. */ | |
e054468f | 4407 | h->needs_plt = 1; |
de972ffa | 4408 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 4409 | return FALSE; |
625af618 | 4410 | break; |
25dbc73a | 4411 | } |
7619e7c7 | 4412 | |
25dbc73a AM |
4413 | dodyn: |
4414 | /* If we are creating a shared library, and this is a reloc | |
4415 | against a global symbol, or a non PC relative reloc | |
4416 | against a local symbol, then we need to copy the reloc | |
4417 | into the shared library. However, if we are linking with | |
4418 | -Bsymbolic, we do not need to copy a reloc against a | |
4419 | global symbol which is defined in an object we are | |
4420 | including in the link (i.e., DEF_REGULAR is set). At | |
4421 | this point we have not seen all the input files, so it is | |
4422 | possible that DEF_REGULAR is not set now but will be set | |
4423 | later (it is never cleared). In case of a weak definition, | |
4424 | DEF_REGULAR may be cleared later by a strong definition in | |
4425 | a shared library. We account for that possibility below by | |
4426 | storing information in the dyn_relocs field of the hash | |
4427 | table entry. A similar situation occurs when creating | |
4428 | shared libraries and symbol visibility changes render the | |
4429 | symbol local. | |
7619e7c7 | 4430 | |
25dbc73a AM |
4431 | If on the other hand, we are creating an executable, we |
4432 | may need to keep relocations for symbols satisfied by a | |
4433 | dynamic library if we manage to avoid copy relocs for the | |
4434 | symbol. */ | |
4435 | if ((info->shared | |
1d483afe | 4436 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 4437 | || (h != NULL |
198f1157 | 4438 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
4439 | || h->root.type == bfd_link_hash_defweak |
4440 | || !h->def_regular)))) | |
4441 | || (ELIMINATE_COPY_RELOCS | |
4442 | && !info->shared | |
25dbc73a AM |
4443 | && h != NULL |
4444 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 4445 | || !h->def_regular))) |
25dbc73a | 4446 | { |
25dbc73a AM |
4447 | #ifdef DEBUG |
4448 | fprintf (stderr, | |
4449 | "ppc_elf_check_relocs needs to " | |
4450 | "create relocation for %s\n", | |
4451 | (h && h->root.root.string | |
4452 | ? h->root.root.string : "<unknown>")); | |
4453 | #endif | |
4454 | if (sreloc == NULL) | |
4455 | { | |
c9a2f333 AM |
4456 | if (htab->elf.dynobj == NULL) |
4457 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
4458 | |
4459 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
4460 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
4461 | ||
25dbc73a | 4462 | if (sreloc == NULL) |
83bac4b0 | 4463 | return FALSE; |
25dbc73a | 4464 | } |
7619e7c7 | 4465 | |
25dbc73a AM |
4466 | /* If this is a global symbol, we count the number of |
4467 | relocations we need for this symbol. */ | |
4468 | if (h != NULL) | |
4469 | { | |
f95f8542 AM |
4470 | struct elf_dyn_relocs *p; |
4471 | struct elf_dyn_relocs **rel_head; | |
4472 | ||
91d6fa6a | 4473 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
4474 | p = *rel_head; |
4475 | if (p == NULL || p->sec != sec) | |
4476 | { | |
4477 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4478 | if (p == NULL) | |
4479 | return FALSE; | |
4480 | p->next = *rel_head; | |
4481 | *rel_head = p; | |
4482 | p->sec = sec; | |
4483 | p->count = 0; | |
4484 | p->pc_count = 0; | |
4485 | } | |
4486 | p->count += 1; | |
4487 | if (!must_be_dyn_reloc (info, r_type)) | |
4488 | p->pc_count += 1; | |
25dbc73a AM |
4489 | } |
4490 | else | |
4491 | { | |
4492 | /* Track dynamic relocs needed for local syms too. | |
4493 | We really need local syms available to do this | |
4494 | easily. Oh well. */ | |
f95f8542 AM |
4495 | struct ppc_dyn_relocs *p; |
4496 | struct ppc_dyn_relocs **rel_head; | |
4497 | bfd_boolean is_ifunc; | |
25dbc73a | 4498 | asection *s; |
6edfbbad | 4499 | void *vpp; |
87d72d41 | 4500 | Elf_Internal_Sym *isym; |
6edfbbad | 4501 | |
87d72d41 AM |
4502 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
4503 | abfd, r_symndx); | |
4504 | if (isym == NULL) | |
25dbc73a | 4505 | return FALSE; |
7fce784e | 4506 | |
87d72d41 AM |
4507 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
4508 | if (s == NULL) | |
4509 | s = sec; | |
4510 | ||
6edfbbad | 4511 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
4512 | rel_head = (struct ppc_dyn_relocs **) vpp; |
4513 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
4514 | p = *rel_head; | |
4515 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
4516 | p = p->next; | |
4517 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
4518 | { | |
4519 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
4520 | if (p == NULL) | |
4521 | return FALSE; | |
4522 | p->next = *rel_head; | |
4523 | *rel_head = p; | |
4524 | p->sec = sec; | |
4525 | p->ifunc = is_ifunc; | |
4526 | p->count = 0; | |
4527 | } | |
4528 | p->count += 1; | |
25dbc73a | 4529 | } |
7619e7c7 | 4530 | } |
25dbc73a AM |
4531 | |
4532 | break; | |
7619e7c7 AM |
4533 | } |
4534 | } | |
ee05f2fe | 4535 | |
25dbc73a AM |
4536 | return TRUE; |
4537 | } | |
4538 | \f | |
34c8bcba JM |
4539 | |
4540 | /* Merge object attributes from IBFD into OBFD. Raise an error if | |
4541 | there are conflicting attributes. */ | |
4542 | static bfd_boolean | |
4543 | ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd) | |
4544 | { | |
c6e65352 DJ |
4545 | obj_attribute *in_attr, *in_attrs; |
4546 | obj_attribute *out_attr, *out_attrs; | |
34c8bcba JM |
4547 | |
4548 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
4549 | { | |
4550 | /* This is the first object. Copy the attributes. */ | |
4551 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
4552 | ||
4553 | /* Use the Tag_null value to indicate the attributes have been | |
4554 | initialized. */ | |
4555 | elf_known_obj_attributes_proc (obfd)[0].i = 1; | |
4556 | ||
4557 | return TRUE; | |
4558 | } | |
4559 | ||
c6e65352 DJ |
4560 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
4561 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
4562 | ||
34c8bcba JM |
4563 | /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge |
4564 | non-conflicting ones. */ | |
c6e65352 DJ |
4565 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
4566 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
4567 | if (in_attr->i != out_attr->i) | |
34c8bcba | 4568 | { |
c6e65352 DJ |
4569 | out_attr->type = 1; |
4570 | if (out_attr->i == 0) | |
4571 | out_attr->i = in_attr->i; | |
4572 | else if (in_attr->i == 0) | |
34c8bcba | 4573 | ; |
c6e65352 | 4574 | else if (out_attr->i == 1 && in_attr->i == 2) |
34c8bcba JM |
4575 | _bfd_error_handler |
4576 | (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd); | |
3c7b9897 AM |
4577 | else if (out_attr->i == 1 && in_attr->i == 3) |
4578 | _bfd_error_handler | |
5b914448 | 4579 | (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"), |
3c7b9897 AM |
4580 | obfd, ibfd); |
4581 | else if (out_attr->i == 3 && in_attr->i == 1) | |
4582 | _bfd_error_handler | |
5b914448 | 4583 | (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"), |
3c7b9897 AM |
4584 | ibfd, obfd); |
4585 | else if (out_attr->i == 3 && in_attr->i == 2) | |
4586 | _bfd_error_handler | |
5b914448 | 4587 | (_("Warning: %B uses soft float, %B uses single-precision hard float"), |
3c7b9897 AM |
4588 | ibfd, obfd); |
4589 | else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3)) | |
34c8bcba JM |
4590 | _bfd_error_handler |
4591 | (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd); | |
3c7b9897 | 4592 | else if (in_attr->i > 3) |
34c8bcba JM |
4593 | _bfd_error_handler |
4594 | (_("Warning: %B uses unknown floating point ABI %d"), ibfd, | |
c6e65352 | 4595 | in_attr->i); |
34c8bcba JM |
4596 | else |
4597 | _bfd_error_handler | |
4598 | (_("Warning: %B uses unknown floating point ABI %d"), obfd, | |
c6e65352 DJ |
4599 | out_attr->i); |
4600 | } | |
4601 | ||
4602 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
4603 | merge non-conflicting ones. */ | |
4604 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
4605 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4606 | if (in_attr->i != out_attr->i) | |
4607 | { | |
4608 | const char *in_abi = NULL, *out_abi = NULL; | |
4609 | ||
4610 | switch (in_attr->i) | |
4611 | { | |
4612 | case 1: in_abi = "generic"; break; | |
4613 | case 2: in_abi = "AltiVec"; break; | |
4614 | case 3: in_abi = "SPE"; break; | |
4615 | } | |
4616 | ||
4617 | switch (out_attr->i) | |
4618 | { | |
4619 | case 1: out_abi = "generic"; break; | |
4620 | case 2: out_abi = "AltiVec"; break; | |
4621 | case 3: out_abi = "SPE"; break; | |
4622 | } | |
4623 | ||
4624 | out_attr->type = 1; | |
4625 | if (out_attr->i == 0) | |
4626 | out_attr->i = in_attr->i; | |
4627 | else if (in_attr->i == 0) | |
4628 | ; | |
4629 | /* For now, allow generic to transition to AltiVec or SPE | |
4630 | without a warning. If GCC marked files with their stack | |
4631 | alignment and used don't-care markings for files which are | |
4632 | not affected by the vector ABI, we could warn about this | |
4633 | case too. */ | |
4634 | else if (out_attr->i == 1) | |
4635 | out_attr->i = in_attr->i; | |
4636 | else if (in_attr->i == 1) | |
4637 | ; | |
4638 | else if (in_abi == NULL) | |
4639 | _bfd_error_handler | |
4640 | (_("Warning: %B uses unknown vector ABI %d"), ibfd, | |
4641 | in_attr->i); | |
4642 | else if (out_abi == NULL) | |
4643 | _bfd_error_handler | |
4644 | (_("Warning: %B uses unknown vector ABI %d"), obfd, | |
4645 | in_attr->i); | |
4646 | else | |
4647 | _bfd_error_handler | |
4648 | (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""), | |
4649 | ibfd, obfd, in_abi, out_abi); | |
34c8bcba JM |
4650 | } |
4651 | ||
f82e0623 NF |
4652 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
4653 | and merge non-conflicting ones. */ | |
4654 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4655 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
4656 | if (in_attr->i != out_attr->i) | |
4657 | { | |
4658 | out_attr->type = 1; | |
4659 | if (out_attr->i == 0) | |
4660 | out_attr->i = in_attr->i; | |
4661 | else if (in_attr->i == 0) | |
4662 | ; | |
4663 | else if (out_attr->i == 1 && in_attr->i == 2) | |
4664 | _bfd_error_handler | |
4665 | (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd); | |
4666 | else if (out_attr->i == 2 && in_attr->i == 1) | |
4667 | _bfd_error_handler | |
4668 | (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd); | |
4669 | else if (in_attr->i > 2) | |
4670 | _bfd_error_handler | |
4671 | (_("Warning: %B uses unknown small structure return convention %d"), ibfd, | |
4672 | in_attr->i); | |
4673 | else | |
4674 | _bfd_error_handler | |
4675 | (_("Warning: %B uses unknown small structure return convention %d"), obfd, | |
4676 | out_attr->i); | |
4677 | } | |
4678 | ||
34c8bcba JM |
4679 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
4680 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
4681 | ||
4682 | return TRUE; | |
4683 | } | |
4684 | ||
8853c3d3 AM |
4685 | /* Merge backend specific data from an object file to the output |
4686 | object file when linking. */ | |
4687 | ||
4688 | static bfd_boolean | |
4689 | ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
4690 | { | |
4691 | flagword old_flags; | |
4692 | flagword new_flags; | |
4693 | bfd_boolean error; | |
4694 | ||
0c8d6e5c | 4695 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
4696 | return TRUE; |
4697 | ||
cc643b88 | 4698 | /* Check if we have the same endianness. */ |
8853c3d3 AM |
4699 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
4700 | return FALSE; | |
4701 | ||
34c8bcba JM |
4702 | if (!ppc_elf_merge_obj_attributes (ibfd, obfd)) |
4703 | return FALSE; | |
4704 | ||
8853c3d3 AM |
4705 | new_flags = elf_elfheader (ibfd)->e_flags; |
4706 | old_flags = elf_elfheader (obfd)->e_flags; | |
4707 | if (!elf_flags_init (obfd)) | |
4708 | { | |
4709 | /* First call, no flags set. */ | |
4710 | elf_flags_init (obfd) = TRUE; | |
4711 | elf_elfheader (obfd)->e_flags = new_flags; | |
4712 | } | |
4713 | ||
4714 | /* Compatible flags are ok. */ | |
4715 | else if (new_flags == old_flags) | |
4716 | ; | |
4717 | ||
4718 | /* Incompatible flags. */ | |
4719 | else | |
4720 | { | |
4721 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
4722 | to be linked with either. */ | |
4723 | error = FALSE; | |
4724 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
4725 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
4726 | { | |
4727 | error = TRUE; | |
4728 | (*_bfd_error_handler) | |
4729 | (_("%B: compiled with -mrelocatable and linked with " | |
4730 | "modules compiled normally"), ibfd); | |
4731 | } | |
4732 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
4733 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
4734 | { | |
4735 | error = TRUE; | |
4736 | (*_bfd_error_handler) | |
4737 | (_("%B: compiled normally and linked with " | |
4738 | "modules compiled with -mrelocatable"), ibfd); | |
4739 | } | |
4740 | ||
4741 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
4742 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
4743 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
4744 | ||
4745 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
4746 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
4747 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
4748 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
4749 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
4750 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
4751 | ||
4752 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
4753 | any module uses it. */ | |
4754 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
4755 | ||
4756 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4757 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
4758 | ||
4759 | /* Warn about any other mismatches. */ | |
4760 | if (new_flags != old_flags) | |
4761 | { | |
4762 | error = TRUE; | |
4763 | (*_bfd_error_handler) | |
4764 | (_("%B: uses different e_flags (0x%lx) fields " | |
4765 | "than previous modules (0x%lx)"), | |
4766 | ibfd, (long) new_flags, (long) old_flags); | |
4767 | } | |
4768 | ||
4769 | if (error) | |
4770 | { | |
4771 | bfd_set_error (bfd_error_bad_value); | |
4772 | return FALSE; | |
4773 | } | |
4774 | } | |
4775 | ||
4776 | return TRUE; | |
4777 | } | |
b9c361e0 JL |
4778 | |
4779 | static void | |
86c95733 AM |
4780 | ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc, |
4781 | bfd_vma value, | |
4782 | split16_format_type split16_format) | |
b9c361e0 JL |
4783 | |
4784 | { | |
86c95733 | 4785 | unsigned int insn, top5; |
b9c361e0 | 4786 | |
86c95733 AM |
4787 | insn = bfd_get_32 (output_bfd, loc); |
4788 | top5 = value & 0xf800; | |
4789 | top5 = top5 << (split16_format == split16a_type ? 9 : 5); | |
b9c361e0 | 4790 | insn |= top5; |
86c95733 AM |
4791 | insn |= value & 0x7ff; |
4792 | bfd_put_32 (output_bfd, insn, loc); | |
b9c361e0 JL |
4793 | } |
4794 | ||
8853c3d3 | 4795 | \f |
d7128ce4 AM |
4796 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
4797 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
4798 | int | |
4799 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 4800 | struct bfd_link_info *info) |
d7128ce4 AM |
4801 | { |
4802 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 4803 | flagword flags; |
d7128ce4 AM |
4804 | |
4805 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
4806 | |
4807 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 4808 | { |
b3874e1a AM |
4809 | struct elf_link_hash_entry *h; |
4810 | ||
5446cbdf | 4811 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 4812 | htab->plt_type = PLT_OLD; |
b3874e1a AM |
4813 | else if (info->shared |
4814 | && htab->elf.dynamic_sections_created | |
4815 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
4816 | FALSE, FALSE, TRUE)) != NULL | |
4817 | && (h->type == STT_FUNC | |
4818 | || h->needs_plt) | |
4819 | && h->ref_regular | |
4820 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
4821 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4822 | && h->root.type == bfd_link_hash_undefweak))) | |
4823 | { | |
4824 | /* Profiling of shared libs (and pies) is not supported with | |
4825 | secure plt, because ppc32 does profiling before a | |
4826 | function prologue and a secure plt pic call stubs needs | |
4827 | r30 to be set up. */ | |
4828 | htab->plt_type = PLT_OLD; | |
4829 | } | |
016687f8 AM |
4830 | else |
4831 | { | |
4832 | bfd *ibfd; | |
5446cbdf | 4833 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4834 | |
4835 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4836 | Use the old style bss plt if a file makes plt calls | |
4837 | without using the new relocs, and if ld isn't given | |
4838 | --secure-plt and we never see REL16 relocs. */ | |
4839 | if (plt_type == PLT_UNSET) | |
4840 | plt_type = PLT_OLD; | |
c72f2fb2 | 4841 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4842 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4843 | { |
4844 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4845 | plt_type = PLT_NEW; | |
4846 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4847 | { | |
4848 | plt_type = PLT_OLD; | |
4849 | htab->old_bfd = ibfd; | |
4850 | break; | |
4851 | } | |
4852 | } | |
4853 | htab->plt_type = plt_type; | |
4854 | } | |
4855 | } | |
5446cbdf | 4856 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
4857 | { |
4858 | if (htab->old_bfd != NULL) | |
4859 | info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"), | |
4860 | htab->old_bfd); | |
4861 | else | |
4862 | info->callbacks->einfo (_("%P: bss-plt forced by profiling\n")); | |
4863 | } | |
d7128ce4 | 4864 | |
4a3dc543 | 4865 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 4866 | |
4a3dc543 | 4867 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
4868 | { |
4869 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4870 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
4871 | |
4872 | /* The new PLT is a loaded section. */ | |
4873 | if (htab->plt != NULL | |
4874 | && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags)) | |
4875 | return -1; | |
4876 | ||
4877 | /* The new GOT is not executable. */ | |
4878 | if (htab->got != NULL | |
4879 | && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags)) | |
4880 | return -1; | |
d7128ce4 AM |
4881 | } |
4882 | else | |
4883 | { | |
4884 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
4885 | if (htab->glink != NULL |
4886 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
4887 | return -1; | |
d7128ce4 | 4888 | } |
4a3dc543 | 4889 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
4890 | } |
4891 | \f | |
25dbc73a AM |
4892 | /* Return the section that should be marked against GC for a given |
4893 | relocation. */ | |
586119b3 | 4894 | |
25dbc73a AM |
4895 | static asection * |
4896 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 4897 | struct bfd_link_info *info, |
25dbc73a AM |
4898 | Elf_Internal_Rela *rel, |
4899 | struct elf_link_hash_entry *h, | |
4900 | Elf_Internal_Sym *sym) | |
4901 | { | |
4902 | if (h != NULL) | |
07adf181 AM |
4903 | switch (ELF32_R_TYPE (rel->r_info)) |
4904 | { | |
4905 | case R_PPC_GNU_VTINHERIT: | |
4906 | case R_PPC_GNU_VTENTRY: | |
4907 | return NULL; | |
4908 | } | |
4909 | ||
4910 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 4911 | } |
a876ecf9 | 4912 | |
25dbc73a AM |
4913 | /* Update the got, plt and dynamic reloc reference counts for the |
4914 | section being removed. */ | |
4915 | ||
4916 | static bfd_boolean | |
4917 | ppc_elf_gc_sweep_hook (bfd *abfd, | |
4918 | struct bfd_link_info *info, | |
4919 | asection *sec, | |
4920 | const Elf_Internal_Rela *relocs) | |
4921 | { | |
4922 | struct ppc_elf_link_hash_table *htab; | |
4923 | Elf_Internal_Shdr *symtab_hdr; | |
4924 | struct elf_link_hash_entry **sym_hashes; | |
4925 | bfd_signed_vma *local_got_refcounts; | |
4926 | const Elf_Internal_Rela *rel, *relend; | |
a6aa5195 | 4927 | asection *got2; |
25dbc73a | 4928 | |
7dda2462 TG |
4929 | if (info->relocatable) |
4930 | return TRUE; | |
4931 | ||
c87b5a93 AM |
4932 | if ((sec->flags & SEC_ALLOC) == 0) |
4933 | return TRUE; | |
4934 | ||
25dbc73a AM |
4935 | elf_section_data (sec)->local_dynrel = NULL; |
4936 | ||
4937 | htab = ppc_elf_hash_table (info); | |
0ffa91dd | 4938 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a AM |
4939 | sym_hashes = elf_sym_hashes (abfd); |
4940 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
a6aa5195 | 4941 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
4942 | |
4943 | relend = relocs + sec->reloc_count; | |
4944 | for (rel = relocs; rel < relend; rel++) | |
4945 | { | |
4946 | unsigned long r_symndx; | |
4947 | enum elf_ppc_reloc_type r_type; | |
4948 | struct elf_link_hash_entry *h = NULL; | |
4949 | ||
4950 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4951 | if (r_symndx >= symtab_hdr->sh_info) | |
a876ecf9 | 4952 | { |
6061a67d | 4953 | struct elf_dyn_relocs **pp, *p; |
25dbc73a AM |
4954 | struct ppc_elf_link_hash_entry *eh; |
4955 | ||
4956 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4957 | while (h->root.type == bfd_link_hash_indirect | |
4958 | || h->root.type == bfd_link_hash_warning) | |
4959 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4960 | eh = (struct ppc_elf_link_hash_entry *) h; | |
4961 | ||
4962 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4963 | if (p->sec == sec) | |
4964 | { | |
4965 | /* Everything must go for SEC. */ | |
4966 | *pp = p->next; | |
4967 | break; | |
4968 | } | |
a876ecf9 | 4969 | } |
ee05f2fe | 4970 | |
25dbc73a | 4971 | r_type = ELF32_R_TYPE (rel->r_info); |
de972ffa AM |
4972 | if (!htab->is_vxworks |
4973 | && h == NULL | |
4974 | && local_got_refcounts != NULL | |
4975 | && (!info->shared | |
4976 | || is_branch_reloc (r_type))) | |
e054468f | 4977 | { |
de972ffa AM |
4978 | struct plt_entry **local_plt = (struct plt_entry **) |
4979 | (local_got_refcounts + symtab_hdr->sh_info); | |
4980 | char *local_got_tls_masks = (char *) | |
4981 | (local_plt + symtab_hdr->sh_info); | |
4982 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
e054468f | 4983 | { |
de972ffa | 4984 | struct plt_entry **ifunc = local_plt + r_symndx; |
a877a2b6 AM |
4985 | bfd_vma addend = 0; |
4986 | struct plt_entry *ent; | |
4987 | ||
4988 | if (r_type == R_PPC_PLTREL24 && info->shared) | |
4989 | addend = rel->r_addend; | |
4990 | ent = find_plt_ent (ifunc, got2, addend); | |
e054468f AM |
4991 | if (ent->plt.refcount > 0) |
4992 | ent->plt.refcount -= 1; | |
4993 | continue; | |
4994 | } | |
4995 | } | |
4996 | ||
25dbc73a | 4997 | switch (r_type) |
ee05f2fe | 4998 | { |
25dbc73a AM |
4999 | case R_PPC_GOT_TLSLD16: |
5000 | case R_PPC_GOT_TLSLD16_LO: | |
5001 | case R_PPC_GOT_TLSLD16_HI: | |
5002 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
5003 | case R_PPC_GOT_TLSGD16: |
5004 | case R_PPC_GOT_TLSGD16_LO: | |
5005 | case R_PPC_GOT_TLSGD16_HI: | |
5006 | case R_PPC_GOT_TLSGD16_HA: | |
5007 | case R_PPC_GOT_TPREL16: | |
5008 | case R_PPC_GOT_TPREL16_LO: | |
5009 | case R_PPC_GOT_TPREL16_HI: | |
5010 | case R_PPC_GOT_TPREL16_HA: | |
5011 | case R_PPC_GOT_DTPREL16: | |
5012 | case R_PPC_GOT_DTPREL16_LO: | |
5013 | case R_PPC_GOT_DTPREL16_HI: | |
5014 | case R_PPC_GOT_DTPREL16_HA: | |
5015 | case R_PPC_GOT16: | |
5016 | case R_PPC_GOT16_LO: | |
5017 | case R_PPC_GOT16_HI: | |
5018 | case R_PPC_GOT16_HA: | |
5019 | if (h != NULL) | |
ee05f2fe | 5020 | { |
25dbc73a AM |
5021 | if (h->got.refcount > 0) |
5022 | h->got.refcount--; | |
91e21fb7 AM |
5023 | if (!info->shared) |
5024 | { | |
5025 | struct plt_entry *ent; | |
5026 | ||
5027 | ent = find_plt_ent (&h->plt.plist, NULL, 0); | |
32af9f6e | 5028 | if (ent != NULL && ent->plt.refcount > 0) |
91e21fb7 AM |
5029 | ent->plt.refcount -= 1; |
5030 | } | |
ee05f2fe | 5031 | } |
25dbc73a AM |
5032 | else if (local_got_refcounts != NULL) |
5033 | { | |
5034 | if (local_got_refcounts[r_symndx] > 0) | |
5035 | local_got_refcounts[r_symndx]--; | |
5036 | } | |
5037 | break; | |
ee05f2fe | 5038 | |
25dbc73a AM |
5039 | case R_PPC_REL24: |
5040 | case R_PPC_REL14: | |
5041 | case R_PPC_REL14_BRTAKEN: | |
5042 | case R_PPC_REL14_BRNTAKEN: | |
5043 | case R_PPC_REL32: | |
3b36f7e6 | 5044 | if (h == NULL || h == htab->elf.hgot) |
25dbc73a AM |
5045 | break; |
5046 | /* Fall thru */ | |
ee05f2fe | 5047 | |
25dbc73a AM |
5048 | case R_PPC_ADDR32: |
5049 | case R_PPC_ADDR24: | |
5050 | case R_PPC_ADDR16: | |
5051 | case R_PPC_ADDR16_LO: | |
5052 | case R_PPC_ADDR16_HI: | |
5053 | case R_PPC_ADDR16_HA: | |
5054 | case R_PPC_ADDR14: | |
5055 | case R_PPC_ADDR14_BRTAKEN: | |
5056 | case R_PPC_ADDR14_BRNTAKEN: | |
5057 | case R_PPC_UADDR32: | |
5058 | case R_PPC_UADDR16: | |
87538722 AM |
5059 | if (info->shared) |
5060 | break; | |
5061 | ||
25dbc73a AM |
5062 | case R_PPC_PLT32: |
5063 | case R_PPC_PLTREL24: | |
87538722 | 5064 | case R_PPC_PLTREL32: |
25dbc73a AM |
5065 | case R_PPC_PLT16_LO: |
5066 | case R_PPC_PLT16_HI: | |
5067 | case R_PPC_PLT16_HA: | |
5068 | if (h != NULL) | |
5069 | { | |
a877a2b6 AM |
5070 | bfd_vma addend = 0; |
5071 | struct plt_entry *ent; | |
5072 | ||
5073 | if (r_type == R_PPC_PLTREL24 && info->shared) | |
5074 | addend = rel->r_addend; | |
5075 | ent = find_plt_ent (&h->plt.plist, got2, addend); | |
32af9f6e | 5076 | if (ent != NULL && ent->plt.refcount > 0) |
a6aa5195 | 5077 | ent->plt.refcount -= 1; |
25dbc73a AM |
5078 | } |
5079 | break; | |
ee05f2fe | 5080 | |
25dbc73a AM |
5081 | default: |
5082 | break; | |
5083 | } | |
7fce784e | 5084 | } |
7fce784e AS |
5085 | return TRUE; |
5086 | } | |
25dbc73a | 5087 | \f |
3a71aa26 AM |
5088 | /* Set plt output section type, htab->tls_get_addr, and call the |
5089 | generic ELF tls_setup function. */ | |
7fce784e | 5090 | |
25dbc73a | 5091 | asection * |
5446cbdf | 5092 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 5093 | { |
25dbc73a | 5094 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 5095 | |
25dbc73a | 5096 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
5097 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5098 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
5099 | if (htab->plt_type != PLT_NEW) |
5100 | htab->params->no_tls_get_addr_opt = TRUE; | |
5101 | ||
5446cbdf | 5102 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
5103 | { |
5104 | struct elf_link_hash_entry *opt, *tga; | |
5105 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
5106 | FALSE, FALSE, TRUE); | |
5107 | if (opt != NULL | |
5108 | && (opt->root.type == bfd_link_hash_defined | |
5109 | || opt->root.type == bfd_link_hash_defweak)) | |
5110 | { | |
5111 | /* If glibc supports an optimized __tls_get_addr call stub, | |
5112 | signalled by the presence of __tls_get_addr_opt, and we'll | |
5113 | be calling __tls_get_addr via a plt call stub, then | |
5114 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
5115 | tga = htab->tls_get_addr; | |
5116 | if (htab->elf.dynamic_sections_created | |
5117 | && tga != NULL | |
5118 | && (tga->type == STT_FUNC | |
5119 | || tga->needs_plt) | |
5120 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
5121 | || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT | |
5122 | && tga->root.type == bfd_link_hash_undefweak))) | |
5123 | { | |
5124 | struct plt_entry *ent; | |
32af9f6e AM |
5125 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
5126 | if (ent->plt.refcount > 0) | |
5127 | break; | |
5128 | if (ent != NULL) | |
a7f2871e AM |
5129 | { |
5130 | tga->root.type = bfd_link_hash_indirect; | |
5131 | tga->root.u.i.link = &opt->root; | |
5132 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
5133 | if (opt->dynindx != -1) | |
5134 | { | |
5135 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
5136 | opt->dynindx = -1; | |
5137 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5138 | opt->dynstr_index); | |
5139 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
5140 | return FALSE; | |
5141 | } | |
5142 | htab->tls_get_addr = opt; | |
5143 | } | |
5144 | } | |
5145 | } | |
5146 | else | |
5446cbdf | 5147 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 5148 | } |
4a3dc543 | 5149 | if (htab->plt_type == PLT_NEW |
d7128ce4 AM |
5150 | && htab->plt != NULL |
5151 | && htab->plt->output_section != NULL) | |
5152 | { | |
5153 | elf_section_type (htab->plt->output_section) = SHT_PROGBITS; | |
5154 | elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE; | |
5155 | } | |
5156 | ||
25dbc73a | 5157 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
5158 | } |
5159 | ||
3a71aa26 AM |
5160 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
5161 | HASH. */ | |
5162 | ||
5163 | static bfd_boolean | |
5164 | branch_reloc_hash_match (const bfd *ibfd, | |
5165 | const Elf_Internal_Rela *rel, | |
5166 | const struct elf_link_hash_entry *hash) | |
5167 | { | |
5168 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
5169 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
5170 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
5171 | ||
e054468f | 5172 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
5173 | { |
5174 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5175 | struct elf_link_hash_entry *h; | |
5176 | ||
5177 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5178 | while (h->root.type == bfd_link_hash_indirect | |
5179 | || h->root.type == bfd_link_hash_warning) | |
5180 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5181 | if (h == hash) | |
5182 | return TRUE; | |
5183 | } | |
5184 | return FALSE; | |
5185 | } | |
5186 | ||
25dbc73a AM |
5187 | /* Run through all the TLS relocs looking for optimization |
5188 | opportunities. */ | |
252b5132 | 5189 | |
25dbc73a AM |
5190 | bfd_boolean |
5191 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
5192 | struct bfd_link_info *info) | |
252b5132 | 5193 | { |
7fce784e | 5194 | bfd *ibfd; |
25dbc73a AM |
5195 | asection *sec; |
5196 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 5197 | int pass; |
252b5132 | 5198 | |
1d483afe | 5199 | if (info->relocatable || !info->executable) |
25dbc73a | 5200 | return TRUE; |
252b5132 | 5201 | |
7619e7c7 | 5202 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
5203 | if (htab == NULL) |
5204 | return FALSE; | |
5205 | ||
b7fcf6f6 AM |
5206 | /* Make two passes through the relocs. First time check that tls |
5207 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
5208 | followed by such a call. If they are not, don't do any tls |
5209 | optimization. On the second pass twiddle tls_mask flags to | |
5210 | notify relocate_section that optimization can be done, and | |
5211 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 5212 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 5213 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 AM |
5214 | { |
5215 | Elf_Internal_Sym *locsyms = NULL; | |
0ffa91dd | 5216 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 5217 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 5218 | |
b7fcf6f6 AM |
5219 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
5220 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
5221 | { | |
5222 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 5223 | int expecting_tls_get_addr = 0; |
252b5132 | 5224 | |
b7fcf6f6 AM |
5225 | /* Read the relocations. */ |
5226 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
5227 | info->keep_memory); | |
5228 | if (relstart == NULL) | |
5229 | return FALSE; | |
7619e7c7 | 5230 | |
b7fcf6f6 AM |
5231 | relend = relstart + sec->reloc_count; |
5232 | for (rel = relstart; rel < relend; rel++) | |
5233 | { | |
5234 | enum elf_ppc_reloc_type r_type; | |
5235 | unsigned long r_symndx; | |
5236 | struct elf_link_hash_entry *h = NULL; | |
5237 | char *tls_mask; | |
5238 | char tls_set, tls_clear; | |
5239 | bfd_boolean is_local; | |
b7fcf6f6 AM |
5240 | bfd_signed_vma *got_count; |
5241 | ||
5242 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5243 | if (r_symndx >= symtab_hdr->sh_info) | |
5244 | { | |
5245 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 5246 | |
b7fcf6f6 AM |
5247 | sym_hashes = elf_sym_hashes (ibfd); |
5248 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5249 | while (h->root.type == bfd_link_hash_indirect | |
5250 | || h->root.type == bfd_link_hash_warning) | |
5251 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5252 | } | |
7619e7c7 | 5253 | |
b7fcf6f6 AM |
5254 | is_local = FALSE; |
5255 | if (h == NULL | |
5256 | || !h->def_dynamic) | |
5257 | is_local = TRUE; | |
7619e7c7 | 5258 | |
b7fcf6f6 | 5259 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
5260 | /* If this section has old-style __tls_get_addr calls |
5261 | without marker relocs, then check that each | |
5262 | __tls_get_addr call reloc is preceded by a reloc | |
5263 | that conceivably belongs to the __tls_get_addr arg | |
5264 | setup insn. If we don't find matching arg setup | |
5265 | relocs, don't do any tls optimization. */ | |
5266 | if (pass == 0 | |
5267 | && sec->has_tls_get_addr_call | |
5268 | && h != NULL | |
5269 | && h == htab->tls_get_addr | |
5270 | && !expecting_tls_get_addr | |
5271 | && is_branch_reloc (r_type)) | |
5272 | { | |
25f53a85 | 5273 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
5274 | "TLS optimization disabled\n", |
5275 | ibfd, sec, rel->r_offset); | |
5276 | if (elf_section_data (sec)->relocs != relstart) | |
5277 | free (relstart); | |
5278 | return TRUE; | |
5279 | } | |
5280 | ||
5281 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
5282 | switch (r_type) |
5283 | { | |
5284 | case R_PPC_GOT_TLSLD16: | |
5285 | case R_PPC_GOT_TLSLD16_LO: | |
5286 | expecting_tls_get_addr = 1; | |
5287 | /* Fall thru */ | |
5288 | ||
5289 | case R_PPC_GOT_TLSLD16_HI: | |
5290 | case R_PPC_GOT_TLSLD16_HA: | |
5291 | /* These relocs should never be against a symbol | |
5292 | defined in a shared lib. Leave them alone if | |
5293 | that turns out to be the case. */ | |
5294 | if (!is_local) | |
5295 | continue; | |
5296 | ||
5297 | /* LD -> LE */ | |
5298 | tls_set = 0; | |
5299 | tls_clear = TLS_LD; | |
5300 | break; | |
5301 | ||
5302 | case R_PPC_GOT_TLSGD16: | |
5303 | case R_PPC_GOT_TLSGD16_LO: | |
5304 | expecting_tls_get_addr = 1; | |
5305 | /* Fall thru */ | |
5306 | ||
5307 | case R_PPC_GOT_TLSGD16_HI: | |
5308 | case R_PPC_GOT_TLSGD16_HA: | |
5309 | if (is_local) | |
5310 | /* GD -> LE */ | |
5311 | tls_set = 0; | |
5312 | else | |
5313 | /* GD -> IE */ | |
5314 | tls_set = TLS_TLS | TLS_TPRELGD; | |
5315 | tls_clear = TLS_GD; | |
5316 | break; | |
5317 | ||
5318 | case R_PPC_GOT_TPREL16: | |
5319 | case R_PPC_GOT_TPREL16_LO: | |
5320 | case R_PPC_GOT_TPREL16_HI: | |
5321 | case R_PPC_GOT_TPREL16_HA: | |
5322 | if (is_local) | |
5323 | { | |
5324 | /* IE -> LE */ | |
5325 | tls_set = 0; | |
5326 | tls_clear = TLS_TPREL; | |
5327 | break; | |
5328 | } | |
5329 | else | |
5330 | continue; | |
5331 | ||
32af9f6e AM |
5332 | case R_PPC_TLSGD: |
5333 | case R_PPC_TLSLD: | |
5334 | expecting_tls_get_addr = 2; | |
5335 | tls_set = 0; | |
5336 | tls_clear = 0; | |
5337 | break; | |
5338 | ||
b7fcf6f6 | 5339 | default: |
25dbc73a | 5340 | continue; |
b7fcf6f6 | 5341 | } |
25dbc73a | 5342 | |
b7fcf6f6 AM |
5343 | if (pass == 0) |
5344 | { | |
727fc41e | 5345 | if (!expecting_tls_get_addr |
32af9f6e AM |
5346 | || (expecting_tls_get_addr == 1 |
5347 | && !sec->has_tls_get_addr_call)) | |
b7fcf6f6 | 5348 | continue; |
25dbc73a | 5349 | |
3a71aa26 AM |
5350 | if (rel + 1 < relend |
5351 | && branch_reloc_hash_match (ibfd, rel + 1, | |
5352 | htab->tls_get_addr)) | |
5353 | continue; | |
25dbc73a | 5354 | |
b7fcf6f6 AM |
5355 | /* Uh oh, we didn't find the expected call. We |
5356 | could just mark this symbol to exclude it | |
5357 | from tls optimization but it's safer to skip | |
663a1470 | 5358 | the entire optimization. */ |
25f53a85 | 5359 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
5360 | "TLS optimization disabled\n"), |
5361 | ibfd, sec, rel->r_offset); | |
5362 | if (elf_section_data (sec)->relocs != relstart) | |
5363 | free (relstart); | |
5364 | return TRUE; | |
b7fcf6f6 | 5365 | } |
25dbc73a | 5366 | |
32af9f6e AM |
5367 | if (expecting_tls_get_addr) |
5368 | { | |
5369 | struct plt_entry *ent; | |
5370 | bfd_vma addend = 0; | |
5371 | ||
5372 | if (info->shared | |
5373 | && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24) | |
5374 | addend = rel[1].r_addend; | |
5375 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
5376 | got2, addend); | |
5377 | if (ent != NULL && ent->plt.refcount > 0) | |
5378 | ent->plt.refcount -= 1; | |
5379 | ||
5380 | if (expecting_tls_get_addr == 2) | |
5381 | continue; | |
5382 | } | |
5383 | ||
b7fcf6f6 AM |
5384 | if (h != NULL) |
5385 | { | |
5386 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
5387 | got_count = &h->got.refcount; | |
5388 | } | |
5389 | else | |
5390 | { | |
b7fcf6f6 | 5391 | bfd_signed_vma *lgot_refs; |
e054468f | 5392 | struct plt_entry **local_plt; |
b7fcf6f6 | 5393 | char *lgot_masks; |
25dbc73a | 5394 | |
b7fcf6f6 AM |
5395 | if (locsyms == NULL) |
5396 | { | |
5397 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5398 | if (locsyms == NULL) | |
5399 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5400 | symtab_hdr->sh_info, | |
5401 | 0, NULL, NULL, NULL); | |
5402 | if (locsyms == NULL) | |
5403 | { | |
5404 | if (elf_section_data (sec)->relocs != relstart) | |
5405 | free (relstart); | |
5406 | return FALSE; | |
5407 | } | |
5408 | } | |
b7fcf6f6 AM |
5409 | lgot_refs = elf_local_got_refcounts (ibfd); |
5410 | if (lgot_refs == NULL) | |
5411 | abort (); | |
e054468f AM |
5412 | local_plt = (struct plt_entry **) |
5413 | (lgot_refs + symtab_hdr->sh_info); | |
5414 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
5415 | tls_mask = &lgot_masks[r_symndx]; |
5416 | got_count = &lgot_refs[r_symndx]; | |
5417 | } | |
25dbc73a | 5418 | |
b7fcf6f6 AM |
5419 | if (tls_set == 0) |
5420 | { | |
5421 | /* We managed to get rid of a got entry. */ | |
5422 | if (*got_count > 0) | |
5423 | *got_count -= 1; | |
5424 | } | |
25dbc73a | 5425 | |
b7fcf6f6 AM |
5426 | *tls_mask |= tls_set; |
5427 | *tls_mask &= ~tls_clear; | |
5428 | } | |
25dbc73a | 5429 | |
b7fcf6f6 AM |
5430 | if (elf_section_data (sec)->relocs != relstart) |
5431 | free (relstart); | |
5432 | } | |
5433 | ||
5434 | if (locsyms != NULL | |
5435 | && (symtab_hdr->contents != (unsigned char *) locsyms)) | |
5436 | { | |
5437 | if (!info->keep_memory) | |
5438 | free (locsyms); | |
5439 | else | |
5440 | symtab_hdr->contents = (unsigned char *) locsyms; | |
5441 | } | |
5442 | } | |
25dbc73a AM |
5443 | return TRUE; |
5444 | } | |
5445 | \f | |
625af618 AM |
5446 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
5447 | ||
5448 | static bfd_boolean | |
5449 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
5450 | { | |
6061a67d | 5451 | struct elf_dyn_relocs *p; |
625af618 AM |
5452 | |
5453 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
5454 | { | |
5455 | asection *s = p->sec->output_section; | |
5456 | ||
5457 | if (s != NULL | |
5458 | && ((s->flags & (SEC_READONLY | SEC_ALLOC)) | |
5459 | == (SEC_READONLY | SEC_ALLOC))) | |
5460 | return TRUE; | |
5461 | } | |
5462 | return FALSE; | |
5463 | } | |
5464 | ||
25dbc73a AM |
5465 | /* Adjust a symbol defined by a dynamic object and referenced by a |
5466 | regular object. The current definition is in some section of the | |
5467 | dynamic object, but we're not including those sections. We have to | |
5468 | change the definition to something the rest of the link can | |
5469 | understand. */ | |
7fce784e | 5470 | |
25dbc73a AM |
5471 | static bfd_boolean |
5472 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5473 | struct elf_link_hash_entry *h) | |
5474 | { | |
5475 | struct ppc_elf_link_hash_table *htab; | |
5476 | asection *s; | |
7fce784e | 5477 | |
25dbc73a AM |
5478 | #ifdef DEBUG |
5479 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
5480 | h->root.root.string); | |
5481 | #endif | |
252b5132 | 5482 | |
25dbc73a AM |
5483 | /* Make sure we know what is going on here. */ |
5484 | htab = ppc_elf_hash_table (info); | |
5485 | BFD_ASSERT (htab->elf.dynobj != NULL | |
5486 | && (h->needs_plt | |
91e21fb7 | 5487 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5488 | || h->u.weakdef != NULL |
5489 | || (h->def_dynamic | |
5490 | && h->ref_regular | |
5491 | && !h->def_regular))); | |
252b5132 | 5492 | |
25dbc73a AM |
5493 | /* Deal with function syms. */ |
5494 | if (h->type == STT_FUNC | |
e054468f | 5495 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
5496 | || h->needs_plt) |
5497 | { | |
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 | |
e054468f AM |
5505 | || (h->type != STT_GNU_IFUNC |
5506 | && (SYMBOL_CALLS_LOCAL (info, h) | |
5507 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5508 | && h->root.type == bfd_link_hash_undefweak)))) | |
252b5132 | 5509 | { |
25dbc73a | 5510 | /* A PLT entry is not required/allowed when: |
252b5132 | 5511 | |
25dbc73a AM |
5512 | 1. We are not using ld.so; because then the PLT entry |
5513 | can't be set up, so we can't use one. In this case, | |
5514 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 5515 | |
25dbc73a AM |
5516 | 2. GC has rendered the entry unused. |
5517 | ||
5518 | 3. We know for certain that a call to this symbol | |
5519 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 5520 | h->plt.plist = NULL; |
25dbc73a | 5521 | h->needs_plt = 0; |
d1eca1e4 | 5522 | h->pointer_equality_needed = 0; |
25dbc73a | 5523 | } |
625af618 AM |
5524 | else |
5525 | { | |
d1eca1e4 AM |
5526 | /* Taking a function's address in a read/write section |
5527 | doesn't require us to define the function symbol in the | |
1009ef28 | 5528 | executable on a plt call stub. A dynamic reloc can |
d1eca1e4 AM |
5529 | be used instead. */ |
5530 | if (h->pointer_equality_needed | |
1009ef28 AM |
5531 | && h->type != STT_GNU_IFUNC |
5532 | && !htab->is_vxworks | |
5533 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
d1eca1e4 AM |
5534 | && !readonly_dynrelocs (h)) |
5535 | { | |
5536 | h->pointer_equality_needed = 0; | |
5537 | h->non_got_ref = 0; | |
5538 | } | |
5539 | ||
25f23106 AM |
5540 | /* After adjust_dynamic_symbol, non_got_ref set in the |
5541 | non-shared case means that we have allocated space in | |
5542 | .dynbss for the symbol and thus dyn_relocs for this | |
5543 | symbol should be discarded. | |
625af618 AM |
5544 | If we get here we know we are making a PLT entry for this |
5545 | symbol, and in an executable we'd normally resolve | |
5546 | relocations against this symbol to the PLT entry. Allow | |
5547 | dynamic relocs if the reference is weak, and the dynamic | |
5548 | relocs will not cause text relocation. */ | |
d1eca1e4 AM |
5549 | else if (!h->ref_regular_nonweak |
5550 | && h->non_got_ref | |
5551 | && h->type != STT_GNU_IFUNC | |
5552 | && !htab->is_vxworks | |
5553 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
5554 | && !readonly_dynrelocs (h)) | |
625af618 AM |
5555 | h->non_got_ref = 0; |
5556 | } | |
25dbc73a | 5557 | return TRUE; |
252b5132 | 5558 | } |
25dbc73a | 5559 | else |
a6aa5195 | 5560 | h->plt.plist = NULL; |
252b5132 | 5561 | |
25dbc73a AM |
5562 | /* If this is a weak symbol, and there is a real definition, the |
5563 | processor independent code will have arranged for us to see the | |
5564 | real definition first, and we can just use the same value. */ | |
5565 | if (h->u.weakdef != NULL) | |
252b5132 | 5566 | { |
25dbc73a AM |
5567 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5568 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5569 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5570 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
5571 | if (ELIMINATE_COPY_RELOCS) | |
5572 | h->non_got_ref = h->u.weakdef->non_got_ref; | |
5573 | return TRUE; | |
5574 | } | |
dc810e39 | 5575 | |
25dbc73a AM |
5576 | /* This is a reference to a symbol defined by a dynamic object which |
5577 | is not a function. */ | |
252b5132 | 5578 | |
25dbc73a AM |
5579 | /* If we are creating a shared library, we must presume that the |
5580 | only references to the symbol are via the global offset table. | |
5581 | For such cases we need not do anything here; the relocations will | |
5582 | be handled correctly by relocate_section. */ | |
5583 | if (info->shared) | |
5584 | return TRUE; | |
252b5132 | 5585 | |
25dbc73a AM |
5586 | /* If there are no references to this symbol that do not use the |
5587 | GOT, we don't need to generate a copy reloc. */ | |
5588 | if (!h->non_got_ref) | |
5589 | return TRUE; | |
5590 | ||
a127494f AM |
5591 | /* If -z nocopyreloc was given, we won't generate them either. */ |
5592 | if (info->nocopyreloc) | |
5593 | { | |
5594 | h->non_got_ref = 0; | |
5595 | return TRUE; | |
5596 | } | |
5597 | ||
cfd2c773 NS |
5598 | /* If we didn't find any dynamic relocs in read-only sections, then |
5599 | we'll be keeping the dynamic relocs and avoiding the copy reloc. | |
5600 | We can't do this if there are any small data relocations. This | |
5601 | doesn't work on VxWorks, where we can not have dynamic | |
5602 | relocations (other than copy and jump slot relocations) in an | |
5603 | executable. */ | |
4dc4a9a5 | 5604 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 5605 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
5606 | && !htab->is_vxworks |
5607 | && !h->def_regular | |
5608 | && !readonly_dynrelocs (h)) | |
25dbc73a | 5609 | { |
625af618 AM |
5610 | h->non_got_ref = 0; |
5611 | return TRUE; | |
252b5132 RH |
5612 | } |
5613 | ||
a127494f AM |
5614 | /* Protected variables do not work with .dynbss. The copy in |
5615 | .dynbss won't be used by the shared library with the protected | |
5616 | definition for the variable. Text relocations are preferable | |
5617 | to an incorrect program. */ | |
5618 | if (h->protected_def) | |
5619 | { | |
5620 | h->non_got_ref = 0; | |
5621 | return TRUE; | |
5622 | } | |
5623 | ||
25dbc73a AM |
5624 | /* We must allocate the symbol in our .dynbss section, which will |
5625 | become part of the .bss section of the executable. There will be | |
5626 | an entry for this symbol in the .dynsym section. The dynamic | |
5627 | object will contain position independent code, so all references | |
5628 | from the dynamic object to this symbol will go through the global | |
5629 | offset table. The dynamic linker will use the .dynsym entry to | |
5630 | determine the address it must put in the global offset table, so | |
5631 | both the dynamic object and the regular object will refer to the | |
5632 | same memory location for the variable. | |
5633 | ||
4dc4a9a5 DJ |
5634 | Of course, if the symbol is referenced using SDAREL relocs, we |
5635 | must instead allocate it in .sbss. */ | |
25dbc73a | 5636 | |
4dc4a9a5 | 5637 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
5638 | s = htab->dynsbss; |
5639 | else | |
5640 | s = htab->dynbss; | |
5641 | BFD_ASSERT (s != NULL); | |
5642 | ||
5643 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
5644 | copy the initial value out of the dynamic object and into the | |
5645 | runtime process image. We need to remember the offset into the | |
5646 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 5647 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
5648 | { |
5649 | asection *srel; | |
5650 | ||
4dc4a9a5 | 5651 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
5652 | srel = htab->relsbss; |
5653 | else | |
5654 | srel = htab->relbss; | |
5655 | BFD_ASSERT (srel != NULL); | |
5656 | srel->size += sizeof (Elf32_External_Rela); | |
5657 | h->needs_copy = 1; | |
5658 | } | |
7619e7c7 | 5659 | |
6cabe1ea | 5660 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
5661 | } |
5662 | \f | |
ac39eb42 AM |
5663 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
5664 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
5665 | specifying the addend on the plt relocation. For -fpic code, the sym | |
5666 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
5667 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
5668 | |
5669 | static bfd_boolean | |
5670 | add_stub_sym (struct plt_entry *ent, | |
5671 | struct elf_link_hash_entry *h, | |
ac39eb42 | 5672 | struct bfd_link_info *info) |
0ba07910 AM |
5673 | { |
5674 | struct elf_link_hash_entry *sh; | |
5675 | size_t len1, len2, len3; | |
5676 | char *name; | |
ac39eb42 AM |
5677 | const char *stub; |
5678 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
5679 | ||
a877a2b6 | 5680 | if (info->shared) |
ac39eb42 AM |
5681 | stub = ".plt_pic32."; |
5682 | else | |
5683 | stub = ".plt_call32."; | |
0ba07910 AM |
5684 | |
5685 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 5686 | len2 = strlen (stub); |
0ba07910 AM |
5687 | len3 = 0; |
5688 | if (ent->sec) | |
5689 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 5690 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
5691 | if (name == NULL) |
5692 | return FALSE; | |
5693 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
5694 | if (ent->sec) | |
5695 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
5696 | memcpy (name + 8 + len3, stub, len2); |
5697 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
5698 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
5699 | if (sh == NULL) | |
5700 | return FALSE; | |
5701 | if (sh->root.type == bfd_link_hash_new) | |
5702 | { | |
5703 | sh->root.type = bfd_link_hash_defined; | |
5704 | sh->root.u.def.section = htab->glink; | |
5705 | sh->root.u.def.value = ent->glink_offset; | |
5706 | sh->ref_regular = 1; | |
5707 | sh->def_regular = 1; | |
5708 | sh->ref_regular_nonweak = 1; | |
5709 | sh->forced_local = 1; | |
5710 | sh->non_elf = 0; | |
2ec55de3 | 5711 | sh->root.linker_def = 1; |
0ba07910 AM |
5712 | } |
5713 | return TRUE; | |
5714 | } | |
5715 | ||
3b36f7e6 AM |
5716 | /* Allocate NEED contiguous space in .got, and return the offset. |
5717 | Handles allocation of the got header when crossing 32k. */ | |
5718 | ||
5719 | static bfd_vma | |
5720 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5721 | { | |
5722 | bfd_vma where; | |
4a3dc543 | 5723 | unsigned int max_before_header; |
3b36f7e6 | 5724 | |
4a3dc543 | 5725 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 PB |
5726 | { |
5727 | where = htab->got->size; | |
5728 | htab->got->size += need; | |
5729 | } | |
3b36f7e6 AM |
5730 | else |
5731 | { | |
4a3dc543 RS |
5732 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5733 | if (need <= htab->got_gap) | |
3b36f7e6 | 5734 | { |
4a3dc543 RS |
5735 | where = max_before_header - htab->got_gap; |
5736 | htab->got_gap -= need; | |
5737 | } | |
5738 | else | |
5739 | { | |
5740 | if (htab->got->size + need > max_before_header | |
5741 | && htab->got->size <= max_before_header) | |
5742 | { | |
5743 | htab->got_gap = max_before_header - htab->got->size; | |
5744 | htab->got->size = max_before_header + htab->got_header_size; | |
5745 | } | |
5746 | where = htab->got->size; | |
5747 | htab->got->size += need; | |
3b36f7e6 | 5748 | } |
3b36f7e6 AM |
5749 | } |
5750 | return where; | |
5751 | } | |
5752 | ||
25dbc73a | 5753 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5754 | |
b34976b6 | 5755 | static bfd_boolean |
25dbc73a | 5756 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5757 | { |
25dbc73a AM |
5758 | struct bfd_link_info *info = inf; |
5759 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5760 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5761 | struct elf_dyn_relocs *p; |
252b5132 | 5762 | |
25dbc73a | 5763 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5764 | return TRUE; |
252b5132 | 5765 | |
7619e7c7 | 5766 | htab = ppc_elf_hash_table (info); |
e054468f AM |
5767 | if (htab->elf.dynamic_sections_created |
5768 | || h->type == STT_GNU_IFUNC) | |
252b5132 | 5769 | { |
a6aa5195 AM |
5770 | struct plt_entry *ent; |
5771 | bfd_boolean doneone = FALSE; | |
28e99bb6 | 5772 | bfd_vma plt_offset = 0, glink_offset = 0; |
e054468f | 5773 | bfd_boolean dyn; |
28e99bb6 | 5774 | |
a6aa5195 AM |
5775 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5776 | if (ent->plt.refcount > 0) | |
5777 | { | |
5778 | /* Make sure this symbol is output as a dynamic symbol. */ | |
5779 | if (h->dynindx == -1 | |
e054468f AM |
5780 | && !h->forced_local |
5781 | && !h->def_regular | |
5782 | && htab->elf.dynamic_sections_created) | |
a6aa5195 AM |
5783 | { |
5784 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
5785 | return FALSE; | |
5786 | } | |
252b5132 | 5787 | |
e054468f | 5788 | dyn = htab->elf.dynamic_sections_created; |
a6aa5195 | 5789 | if (info->shared |
e054468f AM |
5790 | || h->type == STT_GNU_IFUNC |
5791 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
a6aa5195 AM |
5792 | { |
5793 | asection *s = htab->plt; | |
25f23106 | 5794 | if (!dyn || h->dynindx == -1) |
e054468f | 5795 | s = htab->iplt; |
7619e7c7 | 5796 | |
25f23106 | 5797 | if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1) |
a6aa5195 | 5798 | { |
a6aa5195 | 5799 | if (!doneone) |
28e99bb6 AM |
5800 | { |
5801 | plt_offset = s->size; | |
5802 | s->size += 4; | |
5803 | } | |
5804 | ent->plt.offset = plt_offset; | |
d7128ce4 | 5805 | |
a6aa5195 | 5806 | s = htab->glink; |
a877a2b6 | 5807 | if (!doneone || info->shared) |
28e99bb6 AM |
5808 | { |
5809 | glink_offset = s->size; | |
5810 | s->size += GLINK_ENTRY_SIZE; | |
a7f2871e | 5811 | if (h == htab->tls_get_addr |
5446cbdf | 5812 | && !htab->params->no_tls_get_addr_opt) |
a7f2871e | 5813 | s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE; |
28e99bb6 AM |
5814 | } |
5815 | if (!doneone | |
5816 | && !info->shared | |
625af618 | 5817 | && h->def_dynamic |
a6aa5195 AM |
5818 | && !h->def_regular) |
5819 | { | |
5820 | h->root.u.def.section = s; | |
28e99bb6 | 5821 | h->root.u.def.value = glink_offset; |
a6aa5195 | 5822 | } |
28e99bb6 | 5823 | ent->glink_offset = glink_offset; |
0ba07910 | 5824 | |
5446cbdf | 5825 | if (htab->params->emit_stub_syms |
ac39eb42 | 5826 | && !add_stub_sym (ent, h, info)) |
0ba07910 | 5827 | return FALSE; |
a6aa5195 AM |
5828 | } |
5829 | else | |
5830 | { | |
a6aa5195 AM |
5831 | if (!doneone) |
5832 | { | |
28e99bb6 AM |
5833 | /* If this is the first .plt entry, make room |
5834 | for the special first entry. */ | |
5835 | if (s->size == 0) | |
9d8504b1 | 5836 | s->size += htab->plt_initial_entry_size; |
28e99bb6 AM |
5837 | |
5838 | /* The PowerPC PLT is actually composed of two | |
5839 | parts, the first part is 2 words (for a load | |
5840 | and a jump), and then there is a remaining | |
5841 | word available at the end. */ | |
9d8504b1 PB |
5842 | plt_offset = (htab->plt_initial_entry_size |
5843 | + (htab->plt_slot_size | |
5844 | * ((s->size | |
5845 | - htab->plt_initial_entry_size) | |
5846 | / htab->plt_entry_size))); | |
28e99bb6 AM |
5847 | |
5848 | /* If this symbol is not defined in a regular | |
5849 | file, and we are not generating a shared | |
5b914448 | 5850 | library, then set the symbol to this location |
de972ffa AM |
5851 | in the .plt. This is to avoid text |
5852 | relocations, and is required to make | |
28e99bb6 AM |
5853 | function pointers compare as equal between |
5854 | the normal executable and the shared library. */ | |
5855 | if (! info->shared | |
625af618 | 5856 | && h->def_dynamic |
28e99bb6 AM |
5857 | && !h->def_regular) |
5858 | { | |
5859 | h->root.u.def.section = s; | |
5860 | h->root.u.def.value = plt_offset; | |
5861 | } | |
5862 | ||
9d8504b1 PB |
5863 | /* Make room for this entry. */ |
5864 | s->size += htab->plt_entry_size; | |
5865 | /* After the 8192nd entry, room for two entries | |
5866 | is allocated. */ | |
4a3dc543 | 5867 | if (htab->plt_type == PLT_OLD |
9d8504b1 PB |
5868 | && (s->size - htab->plt_initial_entry_size) |
5869 | / htab->plt_entry_size | |
5870 | > PLT_NUM_SINGLE_ENTRIES) | |
5871 | s->size += htab->plt_entry_size; | |
a6aa5195 | 5872 | } |
28e99bb6 | 5873 | ent->plt.offset = plt_offset; |
a6aa5195 | 5874 | } |
25dbc73a | 5875 | |
a6aa5195 AM |
5876 | /* We also need to make an entry in the .rela.plt section. */ |
5877 | if (!doneone) | |
5878 | { | |
25f23106 AM |
5879 | if (!htab->elf.dynamic_sections_created |
5880 | || h->dynindx == -1) | |
e054468f AM |
5881 | htab->reliplt->size += sizeof (Elf32_External_Rela); |
5882 | else | |
9d8504b1 | 5883 | { |
e054468f AM |
5884 | htab->relplt->size += sizeof (Elf32_External_Rela); |
5885 | ||
5886 | if (htab->plt_type == PLT_VXWORKS) | |
9d8504b1 | 5887 | { |
e054468f AM |
5888 | /* Allocate space for the unloaded relocations. */ |
5889 | if (!info->shared | |
5890 | && htab->elf.dynamic_sections_created) | |
9d8504b1 | 5891 | { |
e054468f AM |
5892 | if (ent->plt.offset |
5893 | == (bfd_vma) htab->plt_initial_entry_size) | |
5894 | { | |
5895 | htab->srelplt2->size | |
5896 | += (sizeof (Elf32_External_Rela) | |
5897 | * VXWORKS_PLTRESOLVE_RELOCS); | |
5898 | } | |
5899 | ||
9d8504b1 | 5900 | htab->srelplt2->size |
e054468f AM |
5901 | += (sizeof (Elf32_External_Rela) |
5902 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
9d8504b1 PB |
5903 | } |
5904 | ||
e054468f AM |
5905 | /* Every PLT entry has an associated GOT entry in |
5906 | .got.plt. */ | |
5907 | htab->sgotplt->size += 4; | |
9d8504b1 | 5908 | } |
9d8504b1 | 5909 | } |
a6aa5195 AM |
5910 | doneone = TRUE; |
5911 | } | |
5912 | } | |
5913 | else | |
5914 | ent->plt.offset = (bfd_vma) -1; | |
a6aa5195 | 5915 | } |
2ce859a1 AM |
5916 | else |
5917 | ent->plt.offset = (bfd_vma) -1; | |
5918 | ||
5919 | if (!doneone) | |
5920 | { | |
5921 | h->plt.plist = NULL; | |
5922 | h->needs_plt = 0; | |
5923 | } | |
25dbc73a AM |
5924 | } |
5925 | else | |
5926 | { | |
a6aa5195 | 5927 | h->plt.plist = NULL; |
25dbc73a AM |
5928 | h->needs_plt = 0; |
5929 | } | |
5930 | ||
5931 | eh = (struct ppc_elf_link_hash_entry *) h; | |
5932 | if (eh->elf.got.refcount > 0) | |
5933 | { | |
d6e14abc AM |
5934 | bfd_boolean dyn; |
5935 | unsigned int need; | |
5936 | ||
25dbc73a AM |
5937 | /* Make sure this symbol is output as a dynamic symbol. */ |
5938 | if (eh->elf.dynindx == -1 | |
b099ab9f | 5939 | && !eh->elf.forced_local |
25f23106 | 5940 | && eh->elf.type != STT_GNU_IFUNC |
b099ab9f | 5941 | && htab->elf.dynamic_sections_created) |
25dbc73a AM |
5942 | { |
5943 | if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) | |
b34976b6 | 5944 | return FALSE; |
25dbc73a | 5945 | } |
252b5132 | 5946 | |
d6e14abc AM |
5947 | need = 0; |
5948 | if ((eh->tls_mask & TLS_TLS) != 0) | |
25dbc73a | 5949 | { |
d6e14abc | 5950 | if ((eh->tls_mask & TLS_LD) != 0) |
252b5132 | 5951 | { |
d6e14abc AM |
5952 | if (!eh->elf.def_dynamic) |
5953 | /* We'll just use htab->tlsld_got.offset. This should | |
5954 | always be the case. It's a little odd if we have | |
5955 | a local dynamic reloc against a non-local symbol. */ | |
5956 | htab->tlsld_got.refcount += 1; | |
5957 | else | |
3b36f7e6 | 5958 | need += 8; |
252b5132 | 5959 | } |
d6e14abc AM |
5960 | if ((eh->tls_mask & TLS_GD) != 0) |
5961 | need += 8; | |
5962 | if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
5963 | need += 4; | |
5964 | if ((eh->tls_mask & TLS_DTPREL) != 0) | |
3b36f7e6 | 5965 | need += 4; |
d6e14abc AM |
5966 | } |
5967 | else | |
5968 | need += 4; | |
5969 | if (need == 0) | |
5970 | eh->elf.got.offset = (bfd_vma) -1; | |
5971 | else | |
5972 | { | |
3b36f7e6 | 5973 | eh->elf.got.offset = allocate_got (htab, need); |
25dbc73a AM |
5974 | dyn = htab->elf.dynamic_sections_created; |
5975 | if ((info->shared | |
5976 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) | |
5977 | && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT | |
5978 | || eh->elf.root.type != bfd_link_hash_undefweak)) | |
252b5132 | 5979 | { |
91e21fb7 | 5980 | asection *rsec = htab->relgot; |
0bed072f AM |
5981 | |
5982 | if (eh->elf.type == STT_GNU_IFUNC) | |
5983 | rsec = htab->reliplt; | |
3b36f7e6 AM |
5984 | /* All the entries we allocated need relocs. |
5985 | Except LD only needs one. */ | |
d6e14abc AM |
5986 | if ((eh->tls_mask & TLS_LD) != 0 |
5987 | && eh->elf.def_dynamic) | |
3b36f7e6 | 5988 | need -= 4; |
25f23106 | 5989 | rsec->size += need * (sizeof (Elf32_External_Rela) / 4); |
252b5132 | 5990 | } |
25dbc73a AM |
5991 | } |
5992 | } | |
5993 | else | |
5994 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5995 | |
b099ab9f | 5996 | if (eh->dyn_relocs == NULL |
de972ffa | 5997 | || !htab->elf.dynamic_sections_created) |
25dbc73a | 5998 | return TRUE; |
252b5132 | 5999 | |
25dbc73a AM |
6000 | /* In the shared -Bsymbolic case, discard space allocated for |
6001 | dynamic pc-relative relocs against symbols which turn out to be | |
6002 | defined in regular objects. For the normal shared case, discard | |
6003 | space for relocs that have become local due to symbol visibility | |
6004 | changes. */ | |
6005 | ||
6006 | if (info->shared) | |
6007 | { | |
6008 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 6009 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
6010 | generated via assembly. We want calls to protected symbols to |
6011 | resolve directly to the function rather than going via the plt. | |
6012 | If people want function pointer comparisons to work as expected | |
6013 | then they should avoid writing weird assembly. */ | |
6014 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
6015 | { | |
6061a67d | 6016 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
6017 | |
6018 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 6019 | { |
25dbc73a AM |
6020 | p->count -= p->pc_count; |
6021 | p->pc_count = 0; | |
6022 | if (p->count == 0) | |
6023 | *pp = p->next; | |
6024 | else | |
6025 | pp = &p->next; | |
252b5132 | 6026 | } |
25dbc73a | 6027 | } |
252b5132 | 6028 | |
3348747a NS |
6029 | if (htab->is_vxworks) |
6030 | { | |
6061a67d | 6031 | struct elf_dyn_relocs **pp; |
3348747a NS |
6032 | |
6033 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
6034 | { | |
6035 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
6036 | *pp = p->next; | |
6037 | else | |
6038 | pp = &p->next; | |
6039 | } | |
6040 | } | |
6041 | ||
89200bf8 AM |
6042 | /* Discard relocs on undefined symbols that must be local. */ |
6043 | if (eh->dyn_relocs != NULL | |
6044 | && h->root.type == bfd_link_hash_undefined | |
6045 | && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN | |
6046 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL)) | |
6047 | eh->dyn_relocs = NULL; | |
6048 | ||
25dbc73a AM |
6049 | /* Also discard relocs on undefined weak syms with non-default |
6050 | visibility. */ | |
cab87ef9 AM |
6051 | if (eh->dyn_relocs != NULL |
6052 | && h->root.type == bfd_link_hash_undefweak) | |
25dbc73a | 6053 | { |
dfbb6ac9 AM |
6054 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
6055 | eh->dyn_relocs = NULL; | |
6056 | ||
6057 | /* Make sure undefined weak symbols are output as a dynamic | |
6058 | symbol in PIEs. */ | |
6059 | else if (h->dynindx == -1 | |
e054468f AM |
6060 | && !h->forced_local |
6061 | && !h->def_regular) | |
dfbb6ac9 AM |
6062 | { |
6063 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6064 | return FALSE; | |
6065 | } | |
25dbc73a AM |
6066 | } |
6067 | } | |
6068 | else if (ELIMINATE_COPY_RELOCS) | |
6069 | { | |
6070 | /* For the non-shared case, discard space for relocs against | |
6071 | symbols which turn out to need copy relocs or are not | |
6072 | dynamic. */ | |
7619e7c7 | 6073 | |
25dbc73a | 6074 | if (!h->non_got_ref |
25dbc73a AM |
6075 | && !h->def_regular) |
6076 | { | |
6077 | /* Make sure this symbol is output as a dynamic symbol. | |
6078 | Undefined weak syms won't yet be marked as dynamic. */ | |
6079 | if (h->dynindx == -1 | |
25f23106 | 6080 | && !h->forced_local) |
25dbc73a AM |
6081 | { |
6082 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6083 | return FALSE; | |
6084 | } | |
7619e7c7 | 6085 | |
25dbc73a AM |
6086 | /* If that succeeded, we know we'll be keeping all the |
6087 | relocs. */ | |
6088 | if (h->dynindx != -1) | |
6089 | goto keep; | |
6090 | } | |
252b5132 | 6091 | |
25dbc73a | 6092 | eh->dyn_relocs = NULL; |
252b5132 | 6093 | |
25dbc73a AM |
6094 | keep: ; |
6095 | } | |
252b5132 | 6096 | |
25dbc73a AM |
6097 | /* Finally, allocate space. */ |
6098 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6099 | { | |
6100 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 6101 | if (eh->elf.type == STT_GNU_IFUNC) |
25f23106 | 6102 | sreloc = htab->reliplt; |
25dbc73a AM |
6103 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
6104 | } | |
252b5132 | 6105 | |
25dbc73a AM |
6106 | return TRUE; |
6107 | } | |
7619e7c7 | 6108 | |
625af618 AM |
6109 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
6110 | read-only sections. */ | |
7619e7c7 | 6111 | |
25dbc73a | 6112 | static bfd_boolean |
625af618 | 6113 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) |
25dbc73a | 6114 | { |
25dbc73a AM |
6115 | if (h->root.type == bfd_link_hash_indirect) |
6116 | return TRUE; | |
252b5132 | 6117 | |
625af618 | 6118 | if (readonly_dynrelocs (h)) |
25dbc73a | 6119 | { |
625af618 | 6120 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; |
ee05f2fe | 6121 | |
625af618 AM |
6122 | /* Not an error, just cut short the traversal. */ |
6123 | return FALSE; | |
25dbc73a AM |
6124 | } |
6125 | return TRUE; | |
6126 | } | |
6127 | ||
6177242a AM |
6128 | static const unsigned char glink_eh_frame_cie[] = |
6129 | { | |
6130 | 0, 0, 0, 16, /* length. */ | |
6131 | 0, 0, 0, 0, /* id. */ | |
6132 | 1, /* CIE version. */ | |
6133 | 'z', 'R', 0, /* Augmentation string. */ | |
6134 | 4, /* Code alignment. */ | |
6135 | 0x7c, /* Data alignment. */ | |
6136 | 65, /* RA reg. */ | |
6137 | 1, /* Augmentation size. */ | |
6138 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
6139 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
6140 | }; | |
6141 | ||
25dbc73a AM |
6142 | /* Set the sizes of the dynamic sections. */ |
6143 | ||
6144 | static bfd_boolean | |
93d1b056 | 6145 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
6146 | struct bfd_link_info *info) |
6147 | { | |
6148 | struct ppc_elf_link_hash_table *htab; | |
6149 | asection *s; | |
6150 | bfd_boolean relocs; | |
6151 | bfd *ibfd; | |
7fce784e | 6152 | |
252b5132 | 6153 | #ifdef DEBUG |
25dbc73a | 6154 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 6155 | #endif |
252b5132 | 6156 | |
25dbc73a AM |
6157 | htab = ppc_elf_hash_table (info); |
6158 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 6159 | |
25dbc73a AM |
6160 | if (elf_hash_table (info)->dynamic_sections_created) |
6161 | { | |
6162 | /* Set the contents of the .interp section to the interpreter. */ | |
6163 | if (info->executable) | |
6164 | { | |
3d4d4302 | 6165 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
6166 | BFD_ASSERT (s != NULL); |
6167 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
6168 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
6169 | } | |
6170 | } | |
252b5132 | 6171 | |
4a3dc543 | 6172 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 6173 | htab->got_header_size = 16; |
4a3dc543 | 6174 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 6175 | htab->got_header_size = 12; |
252b5132 | 6176 | |
25dbc73a AM |
6177 | /* Set up .got offsets for local syms, and space for local dynamic |
6178 | relocs. */ | |
c72f2fb2 | 6179 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
6180 | { |
6181 | bfd_signed_vma *local_got; | |
6182 | bfd_signed_vma *end_local_got; | |
e054468f AM |
6183 | struct plt_entry **local_plt; |
6184 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
6185 | char *lgot_masks; |
6186 | bfd_size_type locsymcount; | |
6187 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 6188 | |
0c8d6e5c | 6189 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 6190 | continue; |
7fce784e | 6191 | |
25dbc73a AM |
6192 | for (s = ibfd->sections; s != NULL; s = s->next) |
6193 | { | |
f95f8542 | 6194 | struct ppc_dyn_relocs *p; |
252b5132 | 6195 | |
f95f8542 | 6196 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
6197 | elf_section_data (s)->local_dynrel); |
6198 | p != NULL; | |
6199 | p = p->next) | |
6200 | { | |
6201 | if (!bfd_is_abs_section (p->sec) | |
6202 | && bfd_is_abs_section (p->sec->output_section)) | |
6203 | { | |
6204 | /* Input section has been discarded, either because | |
6205 | it is a copy of a linkonce section or due to | |
6206 | linker script /DISCARD/, so we'll be discarding | |
6207 | the relocs too. */ | |
7fce784e | 6208 | } |
3348747a NS |
6209 | else if (htab->is_vxworks |
6210 | && strcmp (p->sec->output_section->name, | |
6211 | ".tls_vars") == 0) | |
6212 | { | |
6213 | /* Relocations in vxworks .tls_vars sections are | |
6214 | handled specially by the loader. */ | |
6215 | } | |
25dbc73a | 6216 | else if (p->count != 0) |
7fce784e | 6217 | { |
25f23106 | 6218 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 6219 | if (p->ifunc) |
25f23106 AM |
6220 | sreloc = htab->reliplt; |
6221 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
25dbc73a AM |
6222 | if ((p->sec->output_section->flags |
6223 | & (SEC_READONLY | SEC_ALLOC)) | |
6224 | == (SEC_READONLY | SEC_ALLOC)) | |
6225 | info->flags |= DF_TEXTREL; | |
7fce784e | 6226 | } |
252b5132 | 6227 | } |
252b5132 | 6228 | } |
252b5132 | 6229 | |
25dbc73a AM |
6230 | local_got = elf_local_got_refcounts (ibfd); |
6231 | if (!local_got) | |
6232 | continue; | |
252b5132 | 6233 | |
0ffa91dd | 6234 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
6235 | locsymcount = symtab_hdr->sh_info; |
6236 | end_local_got = local_got + locsymcount; | |
e054468f AM |
6237 | local_plt = (struct plt_entry **) end_local_got; |
6238 | end_local_plt = local_plt + locsymcount; | |
6239 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 6240 | |
25dbc73a AM |
6241 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
6242 | if (*local_got > 0) | |
6243 | { | |
d6e14abc AM |
6244 | unsigned int need = 0; |
6245 | if ((*lgot_masks & TLS_TLS) != 0) | |
25dbc73a | 6246 | { |
d6e14abc AM |
6247 | if ((*lgot_masks & TLS_GD) != 0) |
6248 | need += 8; | |
6249 | if ((*lgot_masks & TLS_LD) != 0) | |
6250 | htab->tlsld_got.refcount += 1; | |
6251 | if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
6252 | need += 4; | |
6253 | if ((*lgot_masks & TLS_DTPREL) != 0) | |
6254 | need += 4; | |
25dbc73a | 6255 | } |
d6e14abc AM |
6256 | else |
6257 | need += 4; | |
6258 | if (need == 0) | |
6259 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
6260 | else |
6261 | { | |
3b36f7e6 | 6262 | *local_got = allocate_got (htab, need); |
25dbc73a | 6263 | if (info->shared) |
0bed072f AM |
6264 | { |
6265 | asection *srel = htab->relgot; | |
6266 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
6267 | srel = htab->reliplt; | |
6268 | srel->size += need * (sizeof (Elf32_External_Rela) / 4); | |
6269 | } | |
25dbc73a AM |
6270 | } |
6271 | } | |
6272 | else | |
6273 | *local_got = (bfd_vma) -1; | |
e054468f AM |
6274 | |
6275 | if (htab->is_vxworks) | |
6276 | continue; | |
6277 | ||
6278 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
6279 | for (; local_plt < end_local_plt; ++local_plt) | |
6280 | { | |
6281 | struct plt_entry *ent; | |
6282 | bfd_boolean doneone = FALSE; | |
6283 | bfd_vma plt_offset = 0, glink_offset = 0; | |
6284 | ||
6285 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
6286 | if (ent->plt.refcount > 0) | |
6287 | { | |
91d6fa6a | 6288 | s = htab->iplt; |
e054468f AM |
6289 | |
6290 | if (!doneone) | |
6291 | { | |
6292 | plt_offset = s->size; | |
6293 | s->size += 4; | |
6294 | } | |
6295 | ent->plt.offset = plt_offset; | |
6296 | ||
6297 | s = htab->glink; | |
a877a2b6 | 6298 | if (!doneone || info->shared) |
e054468f AM |
6299 | { |
6300 | glink_offset = s->size; | |
6301 | s->size += GLINK_ENTRY_SIZE; | |
6302 | } | |
6303 | ent->glink_offset = glink_offset; | |
6304 | ||
6305 | if (!doneone) | |
6306 | { | |
25f23106 | 6307 | htab->reliplt->size += sizeof (Elf32_External_Rela); |
e054468f AM |
6308 | doneone = TRUE; |
6309 | } | |
6310 | } | |
6311 | else | |
6312 | ent->plt.offset = (bfd_vma) -1; | |
6313 | } | |
25dbc73a | 6314 | } |
252b5132 | 6315 | |
b7fcf6f6 AM |
6316 | /* Allocate space for global sym dynamic relocs. */ |
6317 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
6318 | ||
3b36f7e6 AM |
6319 | if (htab->tlsld_got.refcount > 0) |
6320 | { | |
6321 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
6322 | if (info->shared) | |
6323 | htab->relgot->size += sizeof (Elf32_External_Rela); | |
6324 | } | |
6325 | else | |
6326 | htab->tlsld_got.offset = (bfd_vma) -1; | |
6327 | ||
4a3dc543 | 6328 | if (htab->got != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
6329 | { |
6330 | unsigned int g_o_t = 32768; | |
6331 | ||
4d962050 AM |
6332 | /* If we haven't allocated the header, do so now. When we get here, |
6333 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
6334 | or 32780 to 65536 (header allocated). For new plt/got, the | |
6335 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
3b36f7e6 AM |
6336 | if (htab->got->size <= 32768) |
6337 | { | |
6338 | g_o_t = htab->got->size; | |
4a3dc543 | 6339 | if (htab->plt_type == PLT_OLD) |
4d962050 | 6340 | g_o_t += 4; |
3b36f7e6 AM |
6341 | htab->got->size += htab->got_header_size; |
6342 | } | |
3b36f7e6 AM |
6343 | |
6344 | htab->elf.hgot->root.u.def.value = g_o_t; | |
6345 | } | |
bd6c6e2b AM |
6346 | if (info->shared) |
6347 | { | |
6348 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
6349 | |
6350 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
6351 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 6352 | } |
15bfcc77 AM |
6353 | if (info->emitrelocations) |
6354 | { | |
6355 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
6356 | ||
6357 | if (sda != NULL && sda->ref_regular) | |
6358 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6359 | sda = htab->sdata[1].sym; | |
6360 | if (sda != NULL && sda->ref_regular) | |
6361 | sda->root.u.def.section->flags |= SEC_KEEP; | |
6362 | } | |
3b36f7e6 | 6363 | |
e054468f AM |
6364 | if (htab->glink != NULL |
6365 | && htab->glink->size != 0 | |
6366 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
6367 | { |
6368 | htab->glink_pltresolve = htab->glink->size; | |
86b9da88 AM |
6369 | /* Space for the branch table. */ |
6370 | htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4; | |
6371 | /* Pad out to align the start of PLTresolve. */ | |
5446cbdf AM |
6372 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
6373 | ? 63 : 15); | |
d7128ce4 | 6374 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 6375 | |
5446cbdf | 6376 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
6377 | { |
6378 | struct elf_link_hash_entry *sh; | |
6379 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
6380 | TRUE, FALSE, FALSE); | |
6381 | if (sh == NULL) | |
6382 | return FALSE; | |
6383 | if (sh->root.type == bfd_link_hash_new) | |
6384 | { | |
6385 | sh->root.type = bfd_link_hash_defined; | |
6386 | sh->root.u.def.section = htab->glink; | |
6387 | sh->root.u.def.value = htab->glink_pltresolve; | |
6388 | sh->ref_regular = 1; | |
6389 | sh->def_regular = 1; | |
6390 | sh->ref_regular_nonweak = 1; | |
6391 | sh->forced_local = 1; | |
6392 | sh->non_elf = 0; | |
2ec55de3 | 6393 | sh->root.linker_def = 1; |
0ba07910 AM |
6394 | } |
6395 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
6396 | TRUE, FALSE, FALSE); | |
6397 | if (sh == NULL) | |
6398 | return FALSE; | |
6399 | if (sh->root.type == bfd_link_hash_new) | |
6400 | { | |
6401 | sh->root.type = bfd_link_hash_defined; | |
6402 | sh->root.u.def.section = htab->glink; | |
6403 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
6404 | sh->ref_regular = 1; | |
6405 | sh->def_regular = 1; | |
6406 | sh->ref_regular_nonweak = 1; | |
6407 | sh->forced_local = 1; | |
6408 | sh->non_elf = 0; | |
2ec55de3 | 6409 | sh->root.linker_def = 1; |
0ba07910 AM |
6410 | } |
6411 | } | |
d7128ce4 AM |
6412 | } |
6413 | ||
6177242a AM |
6414 | if (htab->glink != NULL |
6415 | && htab->glink->size != 0 | |
6416 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
6417 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
6418 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
6419 | { |
6420 | s = htab->glink_eh_frame; | |
6421 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
6422 | if (info->shared) | |
6423 | { | |
6424 | s->size += 4; | |
6425 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
6426 | s->size += 4; | |
6427 | } | |
6428 | } | |
6429 | ||
25dbc73a AM |
6430 | /* We've now determined the sizes of the various dynamic sections. |
6431 | Allocate memory for them. */ | |
6432 | relocs = FALSE; | |
6433 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 6434 | { |
9d8504b1 PB |
6435 | bfd_boolean strip_section = TRUE; |
6436 | ||
25dbc73a AM |
6437 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
6438 | continue; | |
252b5132 | 6439 | |
25dbc73a | 6440 | if (s == htab->plt |
e054468f | 6441 | || s == htab->got) |
25dbc73a | 6442 | { |
9d8504b1 PB |
6443 | /* We'd like to strip these sections if they aren't needed, but if |
6444 | we've exported dynamic symbols from them we must leave them. | |
6445 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 6446 | if (htab->elf.hplt != NULL) |
9d8504b1 | 6447 | strip_section = FALSE; |
25dbc73a AM |
6448 | /* Strip this section if we don't need it; see the |
6449 | comment below. */ | |
6450 | } | |
e054468f AM |
6451 | else if (s == htab->iplt |
6452 | || s == htab->glink | |
6177242a | 6453 | || s == htab->glink_eh_frame |
e054468f AM |
6454 | || s == htab->sgotplt |
6455 | || s == htab->sbss | |
6456 | || s == htab->dynbss | |
15bfcc77 | 6457 | || s == htab->dynsbss) |
25dbc73a | 6458 | { |
c9a2f333 | 6459 | /* Strip these too. */ |
25dbc73a | 6460 | } |
15bfcc77 AM |
6461 | else if (s == htab->sdata[0].section |
6462 | || s == htab->sdata[1].section) | |
6463 | { | |
6464 | strip_section = (s->flags & SEC_KEEP) == 0; | |
6465 | } | |
a0f49396 NC |
6466 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
6467 | ".rela")) | |
25dbc73a | 6468 | { |
c456f082 | 6469 | if (s->size != 0) |
25dbc73a AM |
6470 | { |
6471 | /* Remember whether there are any relocation sections. */ | |
6472 | relocs = TRUE; | |
252b5132 | 6473 | |
25dbc73a AM |
6474 | /* We use the reloc_count field as a counter if we need |
6475 | to copy relocs into the output file. */ | |
6476 | s->reloc_count = 0; | |
252b5132 RH |
6477 | } |
6478 | } | |
25dbc73a AM |
6479 | else |
6480 | { | |
6481 | /* It's not one of our sections, so don't allocate space. */ | |
6482 | continue; | |
6483 | } | |
252b5132 | 6484 | |
9d8504b1 | 6485 | if (s->size == 0 && strip_section) |
25dbc73a | 6486 | { |
c456f082 AM |
6487 | /* If we don't need this section, strip it from the |
6488 | output file. This is mostly to handle .rela.bss and | |
6489 | .rela.plt. We must create both sections in | |
6490 | create_dynamic_sections, because they must be created | |
6491 | before the linker maps input sections to output | |
6492 | sections. The linker does that before | |
6493 | adjust_dynamic_symbol is called, and it is that | |
6494 | function which decides whether anything needs to go | |
6495 | into these sections. */ | |
8423293d | 6496 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
6497 | continue; |
6498 | } | |
7fce784e | 6499 | |
d7128ce4 | 6500 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
6501 | continue; |
6502 | ||
25dbc73a AM |
6503 | /* Allocate memory for the section contents. */ |
6504 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
6505 | if (s->contents == NULL) | |
6506 | return FALSE; | |
6507 | } | |
252b5132 | 6508 | |
25dbc73a | 6509 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 6510 | { |
25dbc73a AM |
6511 | /* Add some entries to the .dynamic section. We fill in the |
6512 | values later, in ppc_elf_finish_dynamic_sections, but we | |
6513 | must add the entries now so that we get the correct size for | |
6514 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6515 | dynamic linker and used by the debugger. */ | |
6516 | #define add_dynamic_entry(TAG, VAL) \ | |
6517 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 6518 | |
25dbc73a | 6519 | if (info->executable) |
7619e7c7 | 6520 | { |
25dbc73a AM |
6521 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
6522 | return FALSE; | |
7619e7c7 AM |
6523 | } |
6524 | ||
25dbc73a | 6525 | if (htab->plt != NULL && htab->plt->size != 0) |
7619e7c7 | 6526 | { |
25dbc73a AM |
6527 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6528 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6529 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
6530 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
6531 | return FALSE; | |
6532 | } | |
7619e7c7 | 6533 | |
c7e17e05 AM |
6534 | if (htab->plt_type == PLT_NEW |
6535 | && htab->glink != NULL | |
6536 | && htab->glink->size != 0) | |
d7128ce4 | 6537 | { |
1fe44d79 | 6538 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 6539 | return FALSE; |
5446cbdf | 6540 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
6541 | && htab->tls_get_addr != NULL |
6542 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 6543 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 6544 | return FALSE; |
d7128ce4 AM |
6545 | } |
6546 | ||
25dbc73a AM |
6547 | if (relocs) |
6548 | { | |
6549 | if (!add_dynamic_entry (DT_RELA, 0) | |
6550 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6551 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
6552 | return FALSE; | |
6553 | } | |
7619e7c7 | 6554 | |
25dbc73a AM |
6555 | /* If any dynamic relocs apply to a read-only section, then we |
6556 | need a DT_TEXTREL entry. */ | |
6557 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 6558 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 6559 | info); |
7619e7c7 | 6560 | |
25dbc73a AM |
6561 | if ((info->flags & DF_TEXTREL) != 0) |
6562 | { | |
6563 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
6564 | return FALSE; | |
7619e7c7 | 6565 | } |
7a2b07ff NS |
6566 | if (htab->is_vxworks |
6567 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
6568 | return FALSE; | |
6569 | } | |
25dbc73a AM |
6570 | #undef add_dynamic_entry |
6571 | ||
7e01508c AM |
6572 | if (htab->glink_eh_frame != NULL |
6573 | && htab->glink_eh_frame->contents != NULL) | |
6574 | { | |
6575 | unsigned char *p = htab->glink_eh_frame->contents; | |
6576 | bfd_vma val; | |
6577 | ||
6578 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
6579 | /* CIE length (rewrite in case little-endian). */ | |
6580 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
6581 | p += sizeof (glink_eh_frame_cie); | |
6582 | /* FDE length. */ | |
6583 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
6584 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6585 | p += 4; | |
6586 | /* CIE pointer. */ | |
6587 | val = p - htab->glink_eh_frame->contents; | |
6588 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6589 | p += 4; | |
6590 | /* Offset to .glink. Set later. */ | |
6591 | p += 4; | |
6592 | /* .glink size. */ | |
6593 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
6594 | p += 4; | |
6595 | /* Augmentation. */ | |
6596 | p += 1; | |
6597 | ||
6598 | if (info->shared | |
6599 | && htab->elf.dynamic_sections_created) | |
6600 | { | |
6601 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
6602 | if (adv < 64) | |
6603 | *p++ = DW_CFA_advance_loc + adv; | |
6604 | else if (adv < 256) | |
6605 | { | |
6606 | *p++ = DW_CFA_advance_loc1; | |
6607 | *p++ = adv; | |
6608 | } | |
6609 | else if (adv < 65536) | |
6610 | { | |
6611 | *p++ = DW_CFA_advance_loc2; | |
6612 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
6613 | p += 2; | |
6614 | } | |
6615 | else | |
6616 | { | |
6617 | *p++ = DW_CFA_advance_loc4; | |
6618 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
6619 | p += 4; | |
6620 | } | |
6621 | *p++ = DW_CFA_register; | |
6622 | *p++ = 65; | |
6623 | p++; | |
6624 | *p++ = DW_CFA_advance_loc + 4; | |
6625 | *p++ = DW_CFA_restore_extended; | |
6626 | *p++ = 65; | |
6627 | } | |
6628 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
6629 | == htab->glink_eh_frame->size); | |
6630 | } | |
6631 | ||
7619e7c7 AM |
6632 | return TRUE; |
6633 | } | |
0eb4a168 | 6634 | |
93d1b056 AM |
6635 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
6636 | if it looks like nothing is using them. */ | |
6637 | ||
6638 | static void | |
6639 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
6640 | { | |
6641 | struct elf_link_hash_entry *sda = lsect->sym; | |
6642 | ||
6643 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
6644 | { | |
6645 | asection *s; | |
6646 | ||
6647 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6648 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6649 | { | |
6650 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6651 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6652 | { | |
6653 | sda->def_regular = 0; | |
6654 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6655 | sda->ref_dynamic = 1; | |
6656 | sda->forced_local = 0; | |
6657 | } | |
6658 | } | |
6659 | } | |
6660 | } | |
6661 | ||
6662 | void | |
6663 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6664 | { | |
6665 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6666 | ||
6667 | if (htab != NULL) | |
6668 | { | |
6669 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6670 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6671 | } | |
6672 | } | |
6673 | ||
6674 | ||
0eb4a168 AM |
6675 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6676 | ||
6677 | static bfd_boolean | |
6678 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6679 | { | |
6680 | if (h->plt.plist != NULL | |
6681 | && !h->def_regular | |
6682 | && (!h->pointer_equality_needed | |
6683 | || !h->ref_regular_nonweak)) | |
6684 | return FALSE; | |
6685 | ||
6686 | return _bfd_elf_hash_symbol (h); | |
6687 | } | |
25dbc73a AM |
6688 | \f |
6689 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6690 | ||
01017ef8 NS |
6691 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6692 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6693 | static const int shared_stub_entry[] = |
6694 | { | |
6695 | 0x7c0802a6, /* mflr 0 */ | |
6696 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6697 | 0x7d8802a6, /* mflr 12 */ |
6698 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6699 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6700 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6701 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6702 | 0x4e800420, /* bctr */ |
6703 | }; | |
6704 | ||
6705 | static const int stub_entry[] = | |
6706 | { | |
01017ef8 NS |
6707 | 0x3d800000, /* lis 12,xxx@ha */ |
6708 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6709 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6710 | 0x4e800420, /* bctr */ |
6711 | }; | |
6712 | ||
5446cbdf AM |
6713 | struct ppc_elf_relax_info |
6714 | { | |
6715 | unsigned int workaround_size; | |
6716 | }; | |
6717 | ||
6718 | /* This function implements long branch trampolines, and the ppc476 | |
6719 | icache bug workaround. Any section needing trampolines or patch | |
6720 | space for the workaround has its size extended so that we can | |
53291d1f | 6721 | add trampolines at the end of the section. */ |
5446cbdf | 6722 | |
25dbc73a AM |
6723 | static bfd_boolean |
6724 | ppc_elf_relax_section (bfd *abfd, | |
6725 | asection *isec, | |
6726 | struct bfd_link_info *link_info, | |
6727 | bfd_boolean *again) | |
6728 | { | |
6729 | struct one_fixup | |
6730 | { | |
6731 | struct one_fixup *next; | |
6732 | asection *tsec; | |
01017ef8 NS |
6733 | /* Final link, can use the symbol offset. For a |
6734 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6735 | bfd_vma toff; |
6736 | bfd_vma trampoff; | |
6737 | }; | |
7619e7c7 | 6738 | |
25dbc73a AM |
6739 | Elf_Internal_Shdr *symtab_hdr; |
6740 | bfd_byte *contents = NULL; | |
6741 | Elf_Internal_Sym *isymbuf = NULL; | |
6742 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6743 | Elf_Internal_Rela *irel, *irelend = NULL; |
25dbc73a | 6744 | struct one_fixup *fixups = NULL; |
5446cbdf | 6745 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6746 | unsigned changes = 0; |
5446cbdf | 6747 | bfd_boolean workaround_change; |
d7128ce4 | 6748 | struct ppc_elf_link_hash_table *htab; |
5446cbdf | 6749 | bfd_size_type trampbase, trampoff, newsize; |
a6aa5195 | 6750 | asection *got2; |
50248c89 | 6751 | bfd_boolean maybe_pasted; |
7619e7c7 | 6752 | |
25dbc73a | 6753 | *again = FALSE; |
7619e7c7 | 6754 | |
5446cbdf | 6755 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6756 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6757 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6758 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6759 | || isec->size < 4) | |
25dbc73a | 6760 | return TRUE; |
7619e7c7 | 6761 | |
c8a1f254 NS |
6762 | /* We cannot represent the required PIC relocs in the output, so don't |
6763 | do anything. The linker doesn't support mixing -shared and -r | |
6764 | anyway. */ | |
6765 | if (link_info->relocatable && link_info->shared) | |
795bc6b3 | 6766 | return TRUE; |
5b914448 | 6767 | |
5446cbdf AM |
6768 | htab = ppc_elf_hash_table (link_info); |
6769 | if (htab == NULL) | |
6770 | return TRUE; | |
6771 | ||
6772 | isec->size = (isec->size + 3) & -4; | |
6773 | if (isec->rawsize == 0) | |
6774 | isec->rawsize = isec->size; | |
6775 | trampbase = isec->size; | |
6776 | ||
53291d1f AM |
6777 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6778 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6779 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6780 | ||
5446cbdf AM |
6781 | if (htab->params->ppc476_workaround) |
6782 | { | |
6783 | if (elf_section_data (isec)->sec_info == NULL) | |
6784 | { | |
5446cbdf AM |
6785 | elf_section_data (isec)->sec_info |
6786 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6787 | if (elf_section_data (isec)->sec_info == NULL) | |
6788 | return FALSE; | |
6789 | } | |
6790 | relax_info = elf_section_data (isec)->sec_info; | |
6791 | trampbase -= relax_info->workaround_size; | |
6792 | } | |
6793 | ||
50248c89 AM |
6794 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6795 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6796 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6797 | trampoff = trampbase; |
6798 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6799 | trampoff += 4; |
7619e7c7 | 6800 | |
0ffa91dd | 6801 | symtab_hdr = &elf_symtab_hdr (abfd); |
7619e7c7 | 6802 | |
5446cbdf | 6803 | if (htab->params->branch_trampolines) |
7619e7c7 | 6804 | { |
5446cbdf AM |
6805 | /* Get a copy of the native relocations. */ |
6806 | if (isec->reloc_count != 0) | |
25dbc73a | 6807 | { |
5446cbdf AM |
6808 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6809 | link_info->keep_memory); | |
6810 | if (internal_relocs == NULL) | |
6811 | goto error_return; | |
25dbc73a | 6812 | } |
7619e7c7 | 6813 | |
5446cbdf AM |
6814 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6815 | ||
6816 | irelend = internal_relocs + isec->reloc_count; | |
6817 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6818 | { |
5446cbdf AM |
6819 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6820 | bfd_vma toff, roff; | |
6821 | asection *tsec; | |
6822 | struct one_fixup *f; | |
6823 | size_t insn_offset = 0; | |
6824 | bfd_vma max_branch_offset, val; | |
6825 | bfd_byte *hit_addr; | |
6826 | unsigned long t0; | |
6827 | struct elf_link_hash_entry *h; | |
6828 | struct plt_entry **plist; | |
6829 | unsigned char sym_type; | |
6830 | ||
6831 | switch (r_type) | |
6832 | { | |
6833 | case R_PPC_REL24: | |
6834 | case R_PPC_LOCAL24PC: | |
6835 | case R_PPC_PLTREL24: | |
6836 | max_branch_offset = 1 << 25; | |
6837 | break; | |
6838 | ||
6839 | case R_PPC_REL14: | |
6840 | case R_PPC_REL14_BRTAKEN: | |
6841 | case R_PPC_REL14_BRNTAKEN: | |
6842 | max_branch_offset = 1 << 15; | |
6843 | break; | |
7fce784e | 6844 | |
5446cbdf AM |
6845 | default: |
6846 | continue; | |
6847 | } | |
6848 | ||
6849 | /* Get the value of the symbol referred to by the reloc. */ | |
6850 | h = NULL; | |
6851 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
25dbc73a | 6852 | { |
5446cbdf AM |
6853 | /* A local symbol. */ |
6854 | Elf_Internal_Sym *isym; | |
6855 | ||
6856 | /* Read this BFD's local symbols. */ | |
25dbc73a | 6857 | if (isymbuf == NULL) |
5446cbdf AM |
6858 | { |
6859 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6860 | if (isymbuf == NULL) | |
6861 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
6862 | symtab_hdr->sh_info, 0, | |
6863 | NULL, NULL, NULL); | |
6864 | if (isymbuf == 0) | |
6865 | goto error_return; | |
6866 | } | |
6867 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6868 | if (isym->st_shndx == SHN_UNDEF) | |
6869 | tsec = bfd_und_section_ptr; | |
6870 | else if (isym->st_shndx == SHN_ABS) | |
6871 | tsec = bfd_abs_section_ptr; | |
6872 | else if (isym->st_shndx == SHN_COMMON) | |
6873 | tsec = bfd_com_section_ptr; | |
6874 | else | |
6875 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6876 | ||
6877 | toff = isym->st_value; | |
6878 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6879 | } |
25dbc73a | 6880 | else |
5446cbdf AM |
6881 | { |
6882 | /* Global symbol handling. */ | |
6883 | unsigned long indx; | |
7fce784e | 6884 | |
5446cbdf AM |
6885 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
6886 | h = elf_sym_hashes (abfd)[indx]; | |
7619e7c7 | 6887 | |
5446cbdf AM |
6888 | while (h->root.type == bfd_link_hash_indirect |
6889 | || h->root.type == bfd_link_hash_warning) | |
6890 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7619e7c7 | 6891 | |
5446cbdf AM |
6892 | if (h->root.type == bfd_link_hash_defined |
6893 | || h->root.type == bfd_link_hash_defweak) | |
6894 | { | |
6895 | tsec = h->root.u.def.section; | |
6896 | toff = h->root.u.def.value; | |
6897 | } | |
6898 | else if (h->root.type == bfd_link_hash_undefined | |
6899 | || h->root.type == bfd_link_hash_undefweak) | |
6900 | { | |
6901 | tsec = bfd_und_section_ptr; | |
6902 | toff = link_info->relocatable ? indx : 0; | |
6903 | } | |
6904 | else | |
6905 | continue; | |
6906 | ||
9f7552cf AM |
6907 | /* If this branch is to __tls_get_addr then we may later |
6908 | optimise away the call. We won't be needing a long- | |
6909 | branch stub in that case. */ | |
6910 | if (link_info->executable | |
6911 | && !link_info->relocatable | |
6912 | && h == htab->tls_get_addr | |
6913 | && irel != internal_relocs) | |
6914 | { | |
6915 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6916 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6917 | unsigned int tls_mask = 0; | |
6918 | ||
6919 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6920 | R_PPC_TLSLD, or for older object files, a reloc | |
6921 | on the __tls_get_addr arg setup insn. Get tls | |
6922 | mask bits from the symbol on that reloc. */ | |
6923 | if (t_symndx < symtab_hdr->sh_info) | |
6924 | { | |
6925 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6926 | ||
6927 | if (local_got_offsets != NULL) | |
6928 | { | |
6929 | struct plt_entry **local_plt = (struct plt_entry **) | |
6930 | (local_got_offsets + symtab_hdr->sh_info); | |
6931 | char *lgot_masks = (char *) | |
6932 | (local_plt + symtab_hdr->sh_info); | |
6933 | tls_mask = lgot_masks[t_symndx]; | |
6934 | } | |
6935 | } | |
6936 | else | |
6937 | { | |
6938 | struct elf_link_hash_entry *th | |
6939 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
6940 | ||
6941 | while (th->root.type == bfd_link_hash_indirect | |
6942 | || th->root.type == bfd_link_hash_warning) | |
6943 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
6944 | ||
6945 | tls_mask | |
6946 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
6947 | } | |
6948 | ||
6949 | /* The mask bits tell us if the call will be | |
6950 | optimised away. */ | |
6951 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
6952 | && (t_rtype == R_PPC_TLSGD | |
6953 | || t_rtype == R_PPC_GOT_TLSGD16 | |
6954 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
6955 | continue; | |
6956 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
6957 | && (t_rtype == R_PPC_TLSLD | |
6958 | || t_rtype == R_PPC_GOT_TLSLD16 | |
6959 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
6960 | continue; | |
6961 | } | |
6962 | ||
5446cbdf AM |
6963 | sym_type = h->type; |
6964 | } | |
7619e7c7 | 6965 | |
5446cbdf AM |
6966 | /* The condition here under which we call find_plt_ent must |
6967 | match that in relocate_section. If we call find_plt_ent here | |
6968 | but not in relocate_section, or vice versa, then the branch | |
6969 | destination used here may be incorrect. */ | |
6970 | plist = NULL; | |
6971 | if (h != NULL) | |
25dbc73a | 6972 | { |
5446cbdf AM |
6973 | /* We know is_branch_reloc (r_type) is true. */ |
6974 | if (h->type == STT_GNU_IFUNC | |
6975 | || r_type == R_PPC_PLTREL24) | |
6976 | plist = &h->plt.plist; | |
25dbc73a | 6977 | } |
5446cbdf AM |
6978 | else if (sym_type == STT_GNU_IFUNC |
6979 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 6980 | { |
5446cbdf AM |
6981 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
6982 | struct plt_entry **local_plt = (struct plt_entry **) | |
6983 | (local_got_offsets + symtab_hdr->sh_info); | |
6984 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 6985 | } |
5446cbdf | 6986 | if (plist != NULL) |
a9585d22 | 6987 | { |
5446cbdf AM |
6988 | bfd_vma addend = 0; |
6989 | struct plt_entry *ent; | |
6990 | ||
6991 | if (r_type == R_PPC_PLTREL24 && link_info->shared) | |
6992 | addend = irel->r_addend; | |
6993 | ent = find_plt_ent (plist, got2, addend); | |
6994 | if (ent != NULL) | |
a9585d22 | 6995 | { |
5446cbdf AM |
6996 | if (htab->plt_type == PLT_NEW |
6997 | || h == NULL | |
6998 | || !htab->elf.dynamic_sections_created | |
6999 | || h->dynindx == -1) | |
7000 | { | |
7001 | tsec = htab->glink; | |
7002 | toff = ent->glink_offset; | |
7003 | } | |
7004 | else | |
7005 | { | |
7006 | tsec = htab->plt; | |
7007 | toff = ent->plt.offset; | |
7008 | } | |
de972ffa AM |
7009 | } |
7010 | } | |
de972ffa | 7011 | |
5446cbdf AM |
7012 | /* If the branch and target are in the same section, you have |
7013 | no hope of adding stubs. We'll error out later should the | |
7014 | branch overflow. */ | |
7015 | if (tsec == isec) | |
7016 | continue; | |
25dbc73a | 7017 | |
5446cbdf AM |
7018 | /* There probably isn't any reason to handle symbols in |
7019 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
7020 | attribute for a code section, and we are only looking at | |
7021 | branches. However, implement it correctly here as a | |
7022 | reference for other target relax_section functions. */ | |
7023 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7024 | { | |
7025 | /* At this stage in linking, no SEC_MERGE symbol has been | |
7026 | adjusted, so all references to such symbols need to be | |
7027 | passed through _bfd_merged_section_offset. (Later, in | |
7028 | relocate_section, all SEC_MERGE symbols *except* for | |
7029 | section symbols have been adjusted.) | |
7030 | ||
7031 | gas may reduce relocations against symbols in SEC_MERGE | |
7032 | sections to a relocation against the section symbol when | |
7033 | the original addend was zero. When the reloc is against | |
7034 | a section symbol we should include the addend in the | |
7035 | offset passed to _bfd_merged_section_offset, since the | |
7036 | location of interest is the original symbol. On the | |
7037 | other hand, an access to "sym+addend" where "sym" is not | |
7038 | a section symbol should not include the addend; Such an | |
7039 | access is presumed to be an offset from "sym"; The | |
7040 | location of interest is just "sym". */ | |
7041 | if (sym_type == STT_SECTION) | |
7042 | toff += irel->r_addend; | |
7043 | ||
7044 | toff | |
7045 | = _bfd_merged_section_offset (abfd, &tsec, | |
7046 | elf_section_data (tsec)->sec_info, | |
7047 | toff); | |
7048 | ||
7049 | if (sym_type != STT_SECTION) | |
7050 | toff += irel->r_addend; | |
7051 | } | |
7052 | /* PLTREL24 addends are special. */ | |
7053 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 7054 | toff += irel->r_addend; |
7619e7c7 | 7055 | |
5446cbdf AM |
7056 | /* Attempted -shared link of non-pic code loses. */ |
7057 | if ((!link_info->relocatable | |
7058 | && tsec == bfd_und_section_ptr) | |
7059 | || tsec->output_section == NULL | |
7060 | || (tsec->owner != NULL | |
7061 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
7062 | continue; | |
7619e7c7 | 7063 | |
5446cbdf | 7064 | roff = irel->r_offset; |
7de713b9 | 7065 | |
5446cbdf AM |
7066 | /* If the branch is in range, no need to do anything. */ |
7067 | if (tsec != bfd_und_section_ptr | |
7068 | && (!link_info->relocatable | |
7069 | /* A relocatable link may have sections moved during | |
7070 | final link, so do not presume they remain in range. */ | |
7071 | || tsec->output_section == isec->output_section)) | |
7072 | { | |
7073 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 7074 | |
5446cbdf AM |
7075 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
7076 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
7077 | if (symaddr - reladdr + max_branch_offset | |
7078 | < 2 * max_branch_offset) | |
7079 | continue; | |
7080 | } | |
01017ef8 | 7081 | |
5446cbdf AM |
7082 | /* Look for an existing fixup to this address. */ |
7083 | for (f = fixups; f ; f = f->next) | |
7084 | if (f->tsec == tsec && f->toff == toff) | |
7085 | break; | |
252b5132 | 7086 | |
5446cbdf AM |
7087 | if (f == NULL) |
7088 | { | |
7089 | size_t size; | |
7090 | unsigned long stub_rtype; | |
25dbc73a | 7091 | |
5446cbdf AM |
7092 | val = trampoff - roff; |
7093 | if (val >= max_branch_offset) | |
7094 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
7095 | one. We'll report an error later. */ | |
7096 | continue; | |
252b5132 | 7097 | |
5446cbdf AM |
7098 | if (link_info->shared) |
7099 | { | |
7100 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
7101 | insn_offset = 12; | |
7102 | } | |
7103 | else | |
7104 | { | |
7105 | size = 4 * ARRAY_SIZE (stub_entry); | |
7106 | insn_offset = 0; | |
7107 | } | |
7108 | stub_rtype = R_PPC_RELAX; | |
7109 | if (tsec == htab->plt | |
7110 | || tsec == htab->glink) | |
7111 | { | |
7112 | stub_rtype = R_PPC_RELAX_PLT; | |
7113 | if (r_type == R_PPC_PLTREL24) | |
7114 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
7115 | } | |
252b5132 | 7116 | |
5446cbdf AM |
7117 | /* Hijack the old relocation. Since we need two |
7118 | relocations for this use a "composite" reloc. */ | |
7119 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
7120 | stub_rtype); | |
7121 | irel->r_offset = trampoff + insn_offset; | |
7122 | if (r_type == R_PPC_PLTREL24 | |
7123 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
7124 | irel->r_addend = 0; | |
7125 | ||
7126 | /* Record the fixup so we don't do it again this section. */ | |
7127 | f = bfd_malloc (sizeof (*f)); | |
7128 | f->next = fixups; | |
7129 | f->tsec = tsec; | |
7130 | f->toff = toff; | |
7131 | f->trampoff = trampoff; | |
7132 | fixups = f; | |
7133 | ||
7134 | trampoff += size; | |
7135 | changes++; | |
25dbc73a AM |
7136 | } |
7137 | else | |
7138 | { | |
5446cbdf AM |
7139 | val = f->trampoff - roff; |
7140 | if (val >= max_branch_offset) | |
7141 | continue; | |
252b5132 | 7142 | |
5446cbdf AM |
7143 | /* Nop out the reloc, since we're finalizing things here. */ |
7144 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7145 | } | |
252b5132 | 7146 | |
5446cbdf AM |
7147 | /* Get the section contents. */ |
7148 | if (contents == NULL) | |
25dbc73a | 7149 | { |
5446cbdf AM |
7150 | /* Get cached copy if it exists. */ |
7151 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
7152 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 7153 | /* Go get them off disk. */ |
5446cbdf | 7154 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
7155 | goto error_return; |
7156 | } | |
252b5132 | 7157 | |
5446cbdf AM |
7158 | /* Fix up the existing branch to hit the trampoline. */ |
7159 | hit_addr = contents + roff; | |
7160 | switch (r_type) | |
7161 | { | |
7162 | case R_PPC_REL24: | |
7163 | case R_PPC_LOCAL24PC: | |
7164 | case R_PPC_PLTREL24: | |
7165 | t0 = bfd_get_32 (abfd, hit_addr); | |
7166 | t0 &= ~0x3fffffc; | |
7167 | t0 |= val & 0x3fffffc; | |
7168 | bfd_put_32 (abfd, t0, hit_addr); | |
7169 | break; | |
252b5132 | 7170 | |
5446cbdf AM |
7171 | case R_PPC_REL14: |
7172 | case R_PPC_REL14_BRTAKEN: | |
7173 | case R_PPC_REL14_BRNTAKEN: | |
7174 | t0 = bfd_get_32 (abfd, hit_addr); | |
7175 | t0 &= ~0xfffc; | |
7176 | t0 |= val & 0xfffc; | |
7177 | bfd_put_32 (abfd, t0, hit_addr); | |
7178 | break; | |
7179 | } | |
25dbc73a | 7180 | } |
252b5132 | 7181 | |
5446cbdf | 7182 | while (fixups != NULL) |
25dbc73a AM |
7183 | { |
7184 | struct one_fixup *f = fixups; | |
7185 | fixups = fixups->next; | |
7186 | free (f); | |
7187 | } | |
5446cbdf | 7188 | } |
252b5132 | 7189 | |
5446cbdf AM |
7190 | workaround_change = FALSE; |
7191 | newsize = trampoff; | |
795bc6b3 AM |
7192 | if (htab->params->ppc476_workaround |
7193 | && (!link_info->relocatable | |
7194 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) | |
5446cbdf AM |
7195 | { |
7196 | bfd_vma addr, end_addr; | |
7197 | unsigned int crossings; | |
795bc6b3 | 7198 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
7199 | |
7200 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 7201 | end_addr = addr + trampoff; |
5446cbdf | 7202 | addr &= -pagesize; |
795bc6b3 | 7203 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
7204 | if (crossings != 0) |
7205 | { | |
7206 | /* Keep space aligned, to ensure the patch code itself does | |
7207 | not cross a page. Don't decrease size calculated on a | |
7208 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 7209 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
7210 | newsize += crossings * 16; |
7211 | if (relax_info->workaround_size < newsize) | |
7212 | { | |
7213 | relax_info->workaround_size = newsize; | |
7214 | workaround_change = TRUE; | |
5446cbdf AM |
7215 | } |
7216 | /* Ensure relocate_section is called. */ | |
7217 | isec->flags |= SEC_RELOC; | |
7218 | } | |
7219 | newsize = trampoff + relax_info->workaround_size; | |
7220 | } | |
7221 | ||
5446cbdf AM |
7222 | if (changes || workaround_change) |
7223 | isec->size = newsize; | |
7224 | ||
25dbc73a AM |
7225 | if (isymbuf != NULL |
7226 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 7227 | { |
25dbc73a AM |
7228 | if (! link_info->keep_memory) |
7229 | free (isymbuf); | |
252b5132 | 7230 | else |
25dbc73a AM |
7231 | { |
7232 | /* Cache the symbols for elf_link_input_bfd. */ | |
7233 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
7234 | } | |
252b5132 RH |
7235 | } |
7236 | ||
25dbc73a AM |
7237 | if (contents != NULL |
7238 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7239 | { | |
53291d1f | 7240 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
7241 | free (contents); |
7242 | else | |
7243 | { | |
7244 | /* Cache the section contents for elf_link_input_bfd. */ | |
7245 | elf_section_data (isec)->this_hdr.contents = contents; | |
7246 | } | |
7247 | } | |
252b5132 | 7248 | |
9bc4e62b | 7249 | if (changes != 0) |
25dbc73a | 7250 | { |
9bc4e62b NS |
7251 | /* Append sufficient NOP relocs so we can write out relocation |
7252 | information for the trampolines. */ | |
d4730f92 | 7253 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
7254 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
7255 | * sizeof (*new_relocs)); | |
7256 | unsigned ix; | |
5b914448 | 7257 | |
9bc4e62b NS |
7258 | if (!new_relocs) |
7259 | goto error_return; | |
7260 | memcpy (new_relocs, internal_relocs, | |
7261 | isec->reloc_count * sizeof (*new_relocs)); | |
7262 | for (ix = changes; ix--;) | |
7263 | { | |
7264 | irel = new_relocs + ix + isec->reloc_count; | |
7265 | ||
7266 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
7267 | } | |
7268 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 7269 | free (internal_relocs); |
9bc4e62b NS |
7270 | elf_section_data (isec)->relocs = new_relocs; |
7271 | isec->reloc_count += changes; | |
d4730f92 BS |
7272 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
7273 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 7274 | } |
5446cbdf AM |
7275 | else if (internal_relocs != NULL |
7276 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 7277 | free (internal_relocs); |
252b5132 | 7278 | |
5446cbdf | 7279 | *again = changes != 0 || workaround_change; |
b34976b6 | 7280 | return TRUE; |
25dbc73a AM |
7281 | |
7282 | error_return: | |
5446cbdf AM |
7283 | while (fixups != NULL) |
7284 | { | |
7285 | struct one_fixup *f = fixups; | |
7286 | fixups = fixups->next; | |
7287 | free (f); | |
7288 | } | |
25dbc73a AM |
7289 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
7290 | free (isymbuf); | |
7291 | if (contents != NULL | |
7292 | && elf_section_data (isec)->this_hdr.contents != contents) | |
7293 | free (contents); | |
7294 | if (internal_relocs != NULL | |
7295 | && elf_section_data (isec)->relocs != internal_relocs) | |
7296 | free (internal_relocs); | |
7297 | return FALSE; | |
252b5132 | 7298 | } |
252b5132 | 7299 | \f |
8a696751 AM |
7300 | /* What to do when ld finds relocations against symbols defined in |
7301 | discarded sections. */ | |
7302 | ||
7303 | static unsigned int | |
7304 | ppc_elf_action_discarded (asection *sec) | |
7305 | { | |
7306 | if (strcmp (".fixup", sec->name) == 0) | |
7307 | return 0; | |
7308 | ||
7309 | if (strcmp (".got2", sec->name) == 0) | |
7310 | return 0; | |
7311 | ||
7312 | return _bfd_elf_default_action_discarded (sec); | |
7313 | } | |
c9a2f333 | 7314 | \f |
25dbc73a | 7315 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 7316 | |
25dbc73a | 7317 | static bfd_vma |
76750a2f | 7318 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
7319 | elf_linker_section_t *lsect, |
7320 | struct elf_link_hash_entry *h, | |
7321 | bfd_vma relocation, | |
2bb04cf2 | 7322 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
7323 | { |
7324 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 7325 | |
25dbc73a | 7326 | BFD_ASSERT (lsect != NULL); |
252b5132 | 7327 | |
25dbc73a | 7328 | if (h != NULL) |
252b5132 | 7329 | { |
25dbc73a AM |
7330 | /* Handle global symbol. */ |
7331 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 7332 | |
25dbc73a | 7333 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
7334 | BFD_ASSERT (eh->elf.def_regular); |
7335 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
7336 | } |
7337 | else | |
7338 | { | |
7339 | /* Handle local symbol. */ | |
7340 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 7341 | |
0c8d6e5c | 7342 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 7343 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
7344 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
7345 | } | |
252b5132 | 7346 | |
76750a2f AM |
7347 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
7348 | rel->r_addend, | |
7349 | lsect); | |
7350 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 7351 | |
76750a2f AM |
7352 | /* Offset will always be a multiple of four, so use the bottom bit |
7353 | as a "written" flag. */ | |
7354 | if ((linker_section_ptr->offset & 1) == 0) | |
7355 | { | |
7356 | bfd_put_32 (lsect->section->owner, | |
7357 | relocation + linker_section_ptr->addend, | |
7358 | lsect->section->contents + linker_section_ptr->offset); | |
7359 | linker_section_ptr->offset += 1; | |
252b5132 RH |
7360 | } |
7361 | ||
bd6c6e2b AM |
7362 | relocation = (lsect->section->output_section->vma |
7363 | + lsect->section->output_offset | |
76750a2f | 7364 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 7365 | - SYM_VAL (lsect->sym)); |
252b5132 | 7366 | |
25dbc73a AM |
7367 | #ifdef DEBUG |
7368 | fprintf (stderr, | |
7369 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
7370 | lsect->name, (long) relocation, (long) relocation); | |
7371 | #endif | |
252b5132 | 7372 | |
bd6c6e2b | 7373 | return relocation; |
252b5132 | 7374 | } |
25dbc73a | 7375 | |
e054468f AM |
7376 | #define PPC_LO(v) ((v) & 0xffff) |
7377 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7378 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7379 | ||
7380 | static void | |
a7f2871e | 7381 | write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p, |
e054468f AM |
7382 | struct bfd_link_info *info) |
7383 | { | |
7384 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
7385 | bfd *output_bfd = info->output_bfd; | |
7386 | bfd_vma plt; | |
e054468f AM |
7387 | |
7388 | plt = ((ent->plt.offset & ~1) | |
7389 | + plt_sec->output_section->vma | |
7390 | + plt_sec->output_offset); | |
e054468f | 7391 | |
a877a2b6 | 7392 | if (info->shared) |
e054468f AM |
7393 | { |
7394 | bfd_vma got = 0; | |
7395 | ||
7396 | if (ent->addend >= 32768) | |
7397 | got = (ent->addend | |
7398 | + ent->sec->output_section->vma | |
7399 | + ent->sec->output_offset); | |
7400 | else if (htab->elf.hgot != NULL) | |
7401 | got = SYM_VAL (htab->elf.hgot); | |
7402 | ||
7403 | plt -= got; | |
7404 | ||
7405 | if (plt + 0x8000 < 0x10000) | |
7406 | { | |
7407 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); | |
7408 | p += 4; | |
7409 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7410 | p += 4; | |
7411 | bfd_put_32 (output_bfd, BCTR, p); | |
7412 | p += 4; | |
da3a2088 | 7413 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); |
e054468f AM |
7414 | p += 4; |
7415 | } | |
7416 | else | |
7417 | { | |
7418 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
7419 | p += 4; | |
7420 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7421 | p += 4; | |
7422 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7423 | p += 4; | |
7424 | bfd_put_32 (output_bfd, BCTR, p); | |
7425 | p += 4; | |
7426 | } | |
7427 | } | |
7428 | else | |
7429 | { | |
7430 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
7431 | p += 4; | |
7432 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
7433 | p += 4; | |
7434 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
7435 | p += 4; | |
7436 | bfd_put_32 (output_bfd, BCTR, p); | |
7437 | p += 4; | |
7438 | } | |
7439 | } | |
7440 | ||
bd6c6e2b AM |
7441 | /* Return true if symbol is defined statically. */ |
7442 | ||
7443 | static bfd_boolean | |
7444 | is_static_defined (struct elf_link_hash_entry *h) | |
7445 | { | |
7446 | return ((h->root.type == bfd_link_hash_defined | |
7447 | || h->root.type == bfd_link_hash_defweak) | |
7448 | && h->root.u.def.section != NULL | |
7449 | && h->root.u.def.section->output_section != NULL); | |
7450 | } | |
7451 | ||
2d0f3896 AM |
7452 | /* If INSN is an opcode that may be used with an @tls operand, return |
7453 | the transformed insn for TLS optimisation, otherwise return 0. If | |
7454 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
7455 | ||
7456 | unsigned int | |
7457 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
7458 | { | |
7459 | unsigned int rtra; | |
7460 | ||
7461 | if ((insn & (0x3f << 26)) != 31 << 26) | |
7462 | return 0; | |
7463 | ||
7464 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
7465 | rtra = insn & ((1 << 26) - (1 << 16)); | |
7466 | else if (((insn >> 16) & 0x1f) == reg) | |
7467 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
7468 | else | |
7469 | return 0; | |
7470 | ||
7471 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
7472 | /* add -> addi. */ | |
7473 | insn = 14 << 26; | |
7474 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
7475 | && ((insn & (0x1f << 6)) < 14 << 6 | |
7476 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
7477 | && (insn & (0x1f << 6)) < 24 << 6))) | |
7478 | /* load and store indexed -> dform. */ | |
7479 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
7480 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
7481 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
7482 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
7483 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
7484 | /* lwax -> lwa. */ | |
7485 | insn = (58 << 26) | 2; | |
7486 | else | |
7487 | return 0; | |
7488 | insn |= rtra; | |
7489 | return insn; | |
7490 | } | |
7491 | ||
766bc656 AM |
7492 | /* If INSN is an opcode that may be used with an @tprel operand, return |
7493 | the transformed insn for an undefined weak symbol, ie. with the | |
7494 | thread pointer REG operand removed. Otherwise return 0. */ | |
7495 | ||
7496 | unsigned int | |
7497 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
7498 | { | |
7499 | if ((insn & (0x1f << 16)) == reg << 16 | |
7500 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7501 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
7502 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7503 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7504 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7505 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7506 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7507 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7508 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7509 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7510 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7511 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7512 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7513 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7514 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7515 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7516 | && (insn & 3) != 1) | |
7517 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7518 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
7519 | { | |
7520 | insn &= ~(0x1f << 16); | |
7521 | } | |
7522 | else if ((insn & (0x1f << 21)) == reg << 21 | |
7523 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
7524 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
7525 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
7526 | { | |
7527 | insn &= ~(0x1f << 21); | |
7528 | insn |= (insn & (0x1f << 16)) << 5; | |
7529 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
7530 | insn -= 2 >> 26; /* convert to ori,oris */ | |
7531 | } | |
7532 | else | |
7533 | insn = 0; | |
7534 | return insn; | |
7535 | } | |
7536 | ||
1fe532cf AM |
7537 | static bfd_boolean |
7538 | is_insn_ds_form (unsigned int insn) | |
7539 | { | |
7540 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
7541 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
7542 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
7543 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
7544 | } | |
7545 | ||
7546 | static bfd_boolean | |
7547 | is_insn_dq_form (unsigned int insn) | |
7548 | { | |
7549 | return (insn & (0x3f << 26)) == 56u << 26; /* lq */ | |
7550 | } | |
7551 | ||
252b5132 RH |
7552 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
7553 | to handle the relocations for a section. | |
7554 | ||
7555 | The relocs are always passed as Rela structures; if the section | |
7556 | actually uses Rel structures, the r_addend field will always be | |
7557 | zero. | |
7558 | ||
7559 | This function is responsible for adjust the section contents as | |
7560 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 7561 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
7562 | necessary. |
7563 | ||
7564 | This function does not have to worry about setting the reloc | |
7565 | address or the reloc symbol index. | |
7566 | ||
7567 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
7568 | ||
7569 | LOCAL_SECTIONS is an array giving the section in the input file | |
7570 | corresponding to the st_shndx field of each local symbol. | |
7571 | ||
7572 | The global hash table entry for the global symbols can be found | |
7573 | via elf_sym_hashes (input_bfd). | |
7574 | ||
1049f94e | 7575 | When generating relocatable output, this function must handle |
252b5132 RH |
7576 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
7577 | going to be the section symbol corresponding to the output | |
7578 | section, which means that the addend must be adjusted | |
7579 | accordingly. */ | |
7580 | ||
b34976b6 | 7581 | static bfd_boolean |
55fd94b0 AM |
7582 | ppc_elf_relocate_section (bfd *output_bfd, |
7583 | struct bfd_link_info *info, | |
7584 | bfd *input_bfd, | |
7585 | asection *input_section, | |
7586 | bfd_byte *contents, | |
7587 | Elf_Internal_Rela *relocs, | |
7588 | Elf_Internal_Sym *local_syms, | |
7589 | asection **local_sections) | |
252b5132 | 7590 | { |
7619e7c7 AM |
7591 | Elf_Internal_Shdr *symtab_hdr; |
7592 | struct elf_link_hash_entry **sym_hashes; | |
7593 | struct ppc_elf_link_hash_table *htab; | |
7594 | Elf_Internal_Rela *rel; | |
7595 | Elf_Internal_Rela *relend; | |
7596 | Elf_Internal_Rela outrel; | |
f95f8542 | 7597 | asection *got2; |
252b5132 | 7598 | bfd_vma *local_got_offsets; |
b34976b6 | 7599 | bfd_boolean ret = TRUE; |
4fe5ca5b | 7600 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
3348747a | 7601 | bfd_boolean is_vxworks_tls; |
b34976b6 | 7602 | |
252b5132 | 7603 | #ifdef DEBUG |
d003868e AM |
7604 | _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, " |
7605 | "%ld relocations%s", | |
7606 | input_bfd, input_section, | |
7607 | (long) input_section->reloc_count, | |
7608 | (info->relocatable) ? " (relocatable)" : ""); | |
252b5132 RH |
7609 | #endif |
7610 | ||
a6aa5195 AM |
7611 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7612 | ||
e47cd125 | 7613 | /* Initialize howto table if not already done. */ |
8da6118f | 7614 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7615 | ppc_elf_howto_init (); |
7616 | ||
7619e7c7 | 7617 | htab = ppc_elf_hash_table (info); |
252b5132 | 7618 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7619 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7620 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7621 | /* We have to handle relocations in vxworks .tls_vars sections |
7622 | specially, because the dynamic loader is 'weird'. */ | |
7623 | is_vxworks_tls = (htab->is_vxworks && info->shared | |
7624 | && !strcmp (input_section->output_section->name, | |
7625 | ".tls_vars")); | |
7619e7c7 AM |
7626 | rel = relocs; |
7627 | relend = relocs + input_section->reloc_count; | |
252b5132 RH |
7628 | for (; rel < relend; rel++) |
7629 | { | |
7619e7c7 AM |
7630 | enum elf_ppc_reloc_type r_type; |
7631 | bfd_vma addend; | |
7632 | bfd_reloc_status_type r; | |
7633 | Elf_Internal_Sym *sym; | |
7634 | asection *sec; | |
7635 | struct elf_link_hash_entry *h; | |
7636 | const char *sym_name; | |
252b5132 RH |
7637 | reloc_howto_type *howto; |
7638 | unsigned long r_symndx; | |
7639 | bfd_vma relocation; | |
91d6fa6a | 7640 | bfd_vma branch_bit, from; |
7619e7c7 AM |
7641 | bfd_boolean unresolved_reloc; |
7642 | bfd_boolean warned; | |
7643 | unsigned int tls_type, tls_mask, tls_gd; | |
e054468f | 7644 | struct plt_entry **ifunc; |
86c95733 | 7645 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7646 | |
55fd94b0 AM |
7647 | r_type = ELF32_R_TYPE (rel->r_info); |
7648 | sym = NULL; | |
7649 | sec = NULL; | |
7650 | h = NULL; | |
7619e7c7 AM |
7651 | unresolved_reloc = FALSE; |
7652 | warned = FALSE; | |
252b5132 | 7653 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7654 | |
252b5132 RH |
7655 | if (r_symndx < symtab_hdr->sh_info) |
7656 | { | |
7657 | sym = local_syms + r_symndx; | |
7658 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7659 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7660 | |
8517fae7 | 7661 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7662 | } |
7663 | else | |
7664 | { | |
62d887d4 L |
7665 | bfd_boolean ignored; |
7666 | ||
b2a8e766 AM |
7667 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7668 | r_symndx, symtab_hdr, sym_hashes, | |
7669 | h, sec, relocation, | |
62d887d4 | 7670 | unresolved_reloc, warned, ignored); |
9abc968f | 7671 | |
252b5132 | 7672 | sym_name = h->root.root.string; |
7619e7c7 AM |
7673 | } |
7674 | ||
dbaa2011 | 7675 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7676 | { |
7677 | /* For relocs against symbols from removed linkonce sections, | |
7678 | or sections discarded by a linker script, we just want the | |
7679 | section contents zeroed. Avoid any special processing. */ | |
7680 | howto = NULL; | |
7681 | if (r_type < R_PPC_max) | |
7682 | howto = ppc_elf_howto_table[r_type]; | |
e4067dbb | 7683 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 7684 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
7685 | } |
7686 | ||
7687 | if (info->relocatable) | |
7688 | { | |
7689 | if (got2 != NULL | |
7690 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7691 | && rel->r_addend != 0) |
ab96bf03 AM |
7692 | { |
7693 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7694 | addend specifies the GOT pointer offset within .got2. */ | |
7695 | rel->r_addend += got2->output_offset; | |
7696 | } | |
53291d1f AM |
7697 | if (r_type != R_PPC_RELAX_PLT |
7698 | && r_type != R_PPC_RELAX_PLTREL24 | |
7699 | && r_type != R_PPC_RELAX) | |
7700 | continue; | |
ab96bf03 AM |
7701 | } |
7702 | ||
7619e7c7 AM |
7703 | /* TLS optimizations. Replace instruction sequences and relocs |
7704 | based on information we collected in tls_optimize. We edit | |
7705 | RELOCS so that --emit-relocs will output something sensible | |
7706 | for the final instruction stream. */ | |
7707 | tls_mask = 0; | |
7708 | tls_gd = 0; | |
727fc41e AM |
7709 | if (h != NULL) |
7710 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7711 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7712 | { |
e054468f | 7713 | struct plt_entry **local_plt; |
727fc41e | 7714 | char *lgot_masks; |
e054468f AM |
7715 | local_plt |
7716 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7717 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7718 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7719 | } |
7720 | ||
7721 | /* Ensure reloc mapping code below stays sane. */ | |
7722 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7723 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7724 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7725 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7726 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7727 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7728 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7729 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7730 | abort (); | |
7731 | switch (r_type) | |
7732 | { | |
7733 | default: | |
7734 | break; | |
7735 | ||
7736 | case R_PPC_GOT_TPREL16: | |
7737 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7738 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7739 | && (tls_mask & TLS_TPREL) == 0) |
7740 | { | |
7741 | bfd_vma insn; | |
91d6fa6a | 7742 | |
4fe5ca5b | 7743 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7744 | insn &= 31 << 21; |
7745 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
4fe5ca5b | 7746 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7747 | r_type = R_PPC_TPREL16_HA; |
7748 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7749 | } | |
7750 | break; | |
7751 | ||
7752 | case R_PPC_TLS: | |
e054468f | 7753 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7754 | && (tls_mask & TLS_TPREL) == 0) |
7755 | { | |
2d0f3896 AM |
7756 | bfd_vma insn; |
7757 | ||
7619e7c7 | 7758 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7759 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7760 | if (insn == 0) | |
7619e7c7 | 7761 | abort (); |
7619e7c7 AM |
7762 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
7763 | r_type = R_PPC_TPREL16_LO; | |
7764 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7765 | |
7619e7c7 | 7766 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7767 | PPC_TPREL16_LO which is at low-order half-word. */ |
7768 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7769 | } |
7770 | break; | |
7771 | ||
7772 | case R_PPC_GOT_TLSGD16_HI: | |
7773 | case R_PPC_GOT_TLSGD16_HA: | |
7774 | tls_gd = TLS_TPRELGD; | |
e054468f | 7775 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7776 | goto tls_gdld_hi; |
7777 | break; | |
7778 | ||
7779 | case R_PPC_GOT_TLSLD16_HI: | |
7780 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7781 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7782 | { |
7783 | tls_gdld_hi: | |
7784 | if ((tls_mask & tls_gd) != 0) | |
7785 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7786 | + R_PPC_GOT_TPREL16); | |
7787 | else | |
7788 | { | |
4fe5ca5b | 7789 | rel->r_offset -= d_offset; |
b86ac8e3 | 7790 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7791 | r_type = R_PPC_NONE; |
7792 | } | |
7793 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7794 | } | |
7795 | break; | |
7796 | ||
7797 | case R_PPC_GOT_TLSGD16: | |
7798 | case R_PPC_GOT_TLSGD16_LO: | |
7799 | tls_gd = TLS_TPRELGD; | |
e054468f | 7800 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7801 | goto tls_ldgd_opt; |
7619e7c7 AM |
7802 | break; |
7803 | ||
7804 | case R_PPC_GOT_TLSLD16: | |
7805 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7806 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7807 | { |
3a71aa26 | 7808 | unsigned int insn1, insn2; |
b7fcf6f6 | 7809 | bfd_vma offset; |
7619e7c7 | 7810 | |
b7fcf6f6 | 7811 | tls_ldgd_opt: |
727fc41e AM |
7812 | offset = (bfd_vma) -1; |
7813 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7814 | __tls_get_addr calls, we must trust that the call | |
7815 | stays with its arg setup insns, ie. that the next | |
7816 | reloc is the __tls_get_addr call associated with | |
7817 | the current reloc. Edit both insns. */ | |
7818 | if (input_section->has_tls_get_addr_call | |
7819 | && rel + 1 < relend | |
7820 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7821 | htab->tls_get_addr)) | |
7822 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7823 | /* We read the low GOT_TLS insn because we need to keep |
7824 | the destination reg. It may be something other than | |
7825 | the usual r3, and moved to r3 before the call by | |
7826 | intervening code. */ | |
7827 | insn1 = bfd_get_32 (output_bfd, | |
7828 | contents + rel->r_offset - d_offset); | |
b7fcf6f6 AM |
7829 | if ((tls_mask & tls_gd) != 0) |
7830 | { | |
7831 | /* IE */ | |
b86ac8e3 | 7832 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 7833 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
7834 | if (offset != (bfd_vma) -1) |
7835 | { | |
f58d5a2d | 7836 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
7837 | insn2 = 0x7c631214; /* add 3,3,2 */ |
7838 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7839 | } | |
b7fcf6f6 AM |
7840 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7841 | + R_PPC_GOT_TPREL16); | |
7842 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7843 | } | |
7844 | else | |
7845 | { | |
7846 | /* LE */ | |
b86ac8e3 AM |
7847 | insn1 &= 0x1f << 21; |
7848 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7849 | if (tls_gd == 0) |
7850 | { | |
b7fcf6f6 | 7851 | /* Was an LD reloc. */ |
1d483afe AM |
7852 | for (r_symndx = 0; |
7853 | r_symndx < symtab_hdr->sh_info; | |
7854 | r_symndx++) | |
7855 | if (local_sections[r_symndx] == sec) | |
7856 | break; | |
7857 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7858 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7859 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7860 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7861 | rel->r_addend -= (local_syms[r_symndx].st_value |
7862 | + sec->output_offset | |
7863 | + sec->output_section->vma); | |
7619e7c7 | 7864 | } |
b7fcf6f6 AM |
7865 | r_type = R_PPC_TPREL16_HA; |
7866 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7867 | if (offset != (bfd_vma) -1) |
7868 | { | |
7869 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7870 | rel[1].r_offset = offset + d_offset; | |
7871 | rel[1].r_addend = rel->r_addend; | |
7872 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7873 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7874 | } | |
b7fcf6f6 AM |
7875 | } |
7876 | bfd_put_32 (output_bfd, insn1, | |
7877 | contents + rel->r_offset - d_offset); | |
b7fcf6f6 AM |
7878 | if (tls_gd == 0) |
7879 | { | |
7880 | /* We changed the symbol on an LD reloc. Start over | |
7881 | in order to get h, sym, sec etc. right. */ | |
7882 | rel--; | |
7883 | continue; | |
7619e7c7 | 7884 | } |
252b5132 | 7885 | } |
7619e7c7 | 7886 | break; |
727fc41e AM |
7887 | |
7888 | case R_PPC_TLSGD: | |
e054468f | 7889 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
727fc41e AM |
7890 | { |
7891 | unsigned int insn2; | |
7892 | bfd_vma offset = rel->r_offset; | |
7893 | ||
7894 | if ((tls_mask & TLS_TPRELGD) != 0) | |
7895 | { | |
7896 | /* IE */ | |
7897 | r_type = R_PPC_NONE; | |
7898 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
7899 | } | |
7900 | else | |
7901 | { | |
7902 | /* LE */ | |
7903 | r_type = R_PPC_TPREL16_LO; | |
7904 | rel->r_offset += d_offset; | |
7905 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7906 | } | |
7907 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7908 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
7909 | /* Zap the reloc on the _tls_get_addr call too. */ | |
7910 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 7911 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
7912 | } |
7913 | break; | |
7914 | ||
7915 | case R_PPC_TLSLD: | |
e054468f | 7916 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
727fc41e AM |
7917 | { |
7918 | unsigned int insn2; | |
7919 | ||
7920 | for (r_symndx = 0; | |
7921 | r_symndx < symtab_hdr->sh_info; | |
7922 | r_symndx++) | |
7923 | if (local_sections[r_symndx] == sec) | |
7924 | break; | |
7925 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7926 | r_symndx = STN_UNDEF; |
727fc41e | 7927 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7928 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
7929 | rel->r_addend -= (local_syms[r_symndx].st_value |
7930 | + sec->output_offset | |
7931 | + sec->output_section->vma); | |
7932 | ||
7933 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7934 | rel->r_offset += d_offset; | |
7935 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7936 | bfd_put_32 (output_bfd, insn2, | |
7937 | contents + rel->r_offset - d_offset); | |
7938 | /* Zap the reloc on the _tls_get_addr call too. */ | |
7939 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 7940 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
7941 | rel--; |
7942 | continue; | |
7943 | } | |
7944 | break; | |
7619e7c7 AM |
7945 | } |
7946 | ||
7947 | /* Handle other relocations that tweak non-addend part of insn. */ | |
7948 | branch_bit = 0; | |
7949 | switch (r_type) | |
7950 | { | |
7951 | default: | |
7952 | break; | |
7953 | ||
7954 | /* Branch taken prediction relocations. */ | |
7955 | case R_PPC_ADDR14_BRTAKEN: | |
7956 | case R_PPC_REL14_BRTAKEN: | |
7957 | branch_bit = BRANCH_PREDICT_BIT; | |
7958 | /* Fall thru */ | |
7959 | ||
4cc11e76 | 7960 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
7961 | case R_PPC_ADDR14_BRNTAKEN: |
7962 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a NC |
7963 | { |
7964 | bfd_vma insn; | |
7619e7c7 | 7965 | |
91d6fa6a NC |
7966 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
7967 | insn &= ~BRANCH_PREDICT_BIT; | |
7968 | insn |= branch_bit; | |
7619e7c7 | 7969 | |
91d6fa6a NC |
7970 | from = (rel->r_offset |
7971 | + input_section->output_offset | |
7972 | + input_section->output_section->vma); | |
7619e7c7 | 7973 | |
91d6fa6a NC |
7974 | /* Invert 'y' bit if not the default. */ |
7975 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
7976 | insn ^= BRANCH_PREDICT_BIT; | |
7977 | ||
7978 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
7979 | break; | |
7980 | } | |
252b5132 RH |
7981 | } |
7982 | ||
e054468f | 7983 | ifunc = NULL; |
25f23106 | 7984 | if (!htab->is_vxworks) |
e054468f | 7985 | { |
de972ffa AM |
7986 | struct plt_entry *ent; |
7987 | ||
e054468f AM |
7988 | if (h != NULL) |
7989 | { | |
7990 | if (h->type == STT_GNU_IFUNC) | |
7991 | ifunc = &h->plt.plist; | |
7992 | } | |
de972ffa AM |
7993 | else if (local_got_offsets != NULL |
7994 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 7995 | { |
de972ffa | 7996 | struct plt_entry **local_plt; |
e054468f | 7997 | |
de972ffa AM |
7998 | local_plt = (struct plt_entry **) (local_got_offsets |
7999 | + symtab_hdr->sh_info); | |
8000 | ifunc = local_plt + r_symndx; | |
e054468f | 8001 | } |
e054468f | 8002 | |
de972ffa AM |
8003 | ent = NULL; |
8004 | if (ifunc != NULL | |
8005 | && (!info->shared | |
8006 | || is_branch_reloc (r_type))) | |
8007 | { | |
8008 | addend = 0; | |
a877a2b6 | 8009 | if (r_type == R_PPC_PLTREL24 && info->shared) |
de972ffa AM |
8010 | addend = rel->r_addend; |
8011 | ent = find_plt_ent (ifunc, got2, addend); | |
8012 | } | |
8013 | if (ent != NULL) | |
8014 | { | |
e054468f AM |
8015 | if (h == NULL && (ent->plt.offset & 1) == 0) |
8016 | { | |
8017 | Elf_Internal_Rela rela; | |
8018 | bfd_byte *loc; | |
8019 | ||
8020 | rela.r_offset = (htab->iplt->output_section->vma | |
8021 | + htab->iplt->output_offset | |
8022 | + ent->plt.offset); | |
8023 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8024 | rela.r_addend = relocation; | |
25f23106 AM |
8025 | loc = htab->reliplt->contents; |
8026 | loc += (htab->reliplt->reloc_count++ | |
8027 | * sizeof (Elf32_External_Rela)); | |
e054468f AM |
8028 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
8029 | ||
8030 | ent->plt.offset |= 1; | |
8031 | } | |
8032 | if (h == NULL && (ent->glink_offset & 1) == 0) | |
8033 | { | |
a7f2871e AM |
8034 | unsigned char *p = ((unsigned char *) htab->glink->contents |
8035 | + ent->glink_offset); | |
8036 | write_glink_stub (ent, htab->iplt, p, info); | |
e054468f AM |
8037 | ent->glink_offset |= 1; |
8038 | } | |
8039 | ||
8040 | unresolved_reloc = FALSE; | |
8041 | if (htab->plt_type == PLT_NEW | |
8042 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
8043 | || h == NULL |
8044 | || h->dynindx == -1) | |
e054468f AM |
8045 | relocation = (htab->glink->output_section->vma |
8046 | + htab->glink->output_offset | |
8047 | + (ent->glink_offset & ~1)); | |
8048 | else | |
8049 | relocation = (htab->plt->output_section->vma | |
8050 | + htab->plt->output_offset | |
8051 | + ent->plt.offset); | |
8052 | } | |
8053 | } | |
8054 | ||
7619e7c7 AM |
8055 | addend = rel->r_addend; |
8056 | tls_type = 0; | |
8057 | howto = NULL; | |
55fd94b0 AM |
8058 | if (r_type < R_PPC_max) |
8059 | howto = ppc_elf_howto_table[r_type]; | |
7619e7c7 | 8060 | switch (r_type) |
252b5132 RH |
8061 | { |
8062 | default: | |
25f53a85 | 8063 | info->callbacks->einfo |
8de848d8 | 8064 | (_("%P: %B: unknown relocation type %d for symbol %s\n"), |
d003868e | 8065 | input_bfd, (int) r_type, sym_name); |
252b5132 RH |
8066 | |
8067 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8068 | ret = FALSE; |
252b5132 RH |
8069 | continue; |
8070 | ||
7619e7c7 AM |
8071 | case R_PPC_NONE: |
8072 | case R_PPC_TLS: | |
727fc41e AM |
8073 | case R_PPC_TLSGD: |
8074 | case R_PPC_TLSLD: | |
7619e7c7 AM |
8075 | case R_PPC_EMB_MRKREF: |
8076 | case R_PPC_GNU_VTINHERIT: | |
8077 | case R_PPC_GNU_VTENTRY: | |
7595d193 L |
8078 | continue; |
8079 | ||
7619e7c7 AM |
8080 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
8081 | address in the GOT as relocation value instead of the | |
8082 | symbol's value itself. Also, create a GOT entry for the | |
8083 | symbol and put the symbol value there. */ | |
8084 | case R_PPC_GOT_TLSGD16: | |
8085 | case R_PPC_GOT_TLSGD16_LO: | |
8086 | case R_PPC_GOT_TLSGD16_HI: | |
8087 | case R_PPC_GOT_TLSGD16_HA: | |
8088 | tls_type = TLS_TLS | TLS_GD; | |
8089 | goto dogot; | |
8090 | ||
8091 | case R_PPC_GOT_TLSLD16: | |
8092 | case R_PPC_GOT_TLSLD16_LO: | |
8093 | case R_PPC_GOT_TLSLD16_HI: | |
8094 | case R_PPC_GOT_TLSLD16_HA: | |
8095 | tls_type = TLS_TLS | TLS_LD; | |
8096 | goto dogot; | |
8097 | ||
8098 | case R_PPC_GOT_TPREL16: | |
8099 | case R_PPC_GOT_TPREL16_LO: | |
8100 | case R_PPC_GOT_TPREL16_HI: | |
8101 | case R_PPC_GOT_TPREL16_HA: | |
8102 | tls_type = TLS_TLS | TLS_TPREL; | |
8103 | goto dogot; | |
8104 | ||
8105 | case R_PPC_GOT_DTPREL16: | |
8106 | case R_PPC_GOT_DTPREL16_LO: | |
8107 | case R_PPC_GOT_DTPREL16_HI: | |
8108 | case R_PPC_GOT_DTPREL16_HA: | |
8109 | tls_type = TLS_TLS | TLS_DTPREL; | |
8110 | goto dogot; | |
8111 | ||
8112 | case R_PPC_GOT16: | |
8113 | case R_PPC_GOT16_LO: | |
8114 | case R_PPC_GOT16_HI: | |
8115 | case R_PPC_GOT16_HA: | |
727fc41e | 8116 | tls_mask = 0; |
7619e7c7 AM |
8117 | dogot: |
8118 | { | |
8119 | /* Relocation is to the entry for this symbol in the global | |
8120 | offset table. */ | |
8121 | bfd_vma off; | |
8122 | bfd_vma *offp; | |
8123 | unsigned long indx; | |
8124 | ||
8125 | if (htab->got == NULL) | |
8126 | abort (); | |
8127 | ||
8128 | indx = 0; | |
8129 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 8130 | && (h == NULL |
f5385ebf | 8131 | || !h->def_dynamic)) |
7619e7c7 AM |
8132 | offp = &htab->tlsld_got.offset; |
8133 | else if (h != NULL) | |
8134 | { | |
8135 | bfd_boolean dyn; | |
8136 | dyn = htab->elf.dynamic_sections_created; | |
ee05f2fe | 8137 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
7619e7c7 AM |
8138 | || (info->shared |
8139 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
8140 | /* This is actually a static link, or it is a | |
8141 | -Bsymbolic link and the symbol is defined | |
8142 | locally, or the symbol was forced to be local | |
8143 | because of a version file. */ | |
8144 | ; | |
8145 | else | |
8146 | { | |
14acf4dc | 8147 | BFD_ASSERT (h->dynindx != -1); |
7619e7c7 AM |
8148 | indx = h->dynindx; |
8149 | unresolved_reloc = FALSE; | |
8150 | } | |
8151 | offp = &h->got.offset; | |
8152 | } | |
8153 | else | |
8154 | { | |
8155 | if (local_got_offsets == NULL) | |
8156 | abort (); | |
8157 | offp = &local_got_offsets[r_symndx]; | |
8158 | } | |
8159 | ||
8160 | /* The offset must always be a multiple of 4. We use the | |
8161 | least significant bit to record whether we have already | |
8162 | processed this entry. */ | |
8163 | off = *offp; | |
8164 | if ((off & 1) != 0) | |
8165 | off &= ~1; | |
8166 | else | |
8167 | { | |
70bccea4 AM |
8168 | unsigned int tls_m = (tls_mask |
8169 | & (TLS_LD | TLS_GD | TLS_DTPREL | |
8170 | | TLS_TPREL | TLS_TPRELGD)); | |
8171 | ||
8172 | if (offp == &htab->tlsld_got.offset) | |
8173 | tls_m = TLS_LD; | |
8174 | else if (h == NULL | |
f5385ebf | 8175 | || !h->def_dynamic) |
70bccea4 AM |
8176 | tls_m &= ~TLS_LD; |
8177 | ||
8178 | /* We might have multiple got entries for this sym. | |
8179 | Initialize them all. */ | |
8180 | do | |
7619e7c7 | 8181 | { |
70bccea4 AM |
8182 | int tls_ty = 0; |
8183 | ||
8184 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 8185 | { |
70bccea4 AM |
8186 | tls_ty = TLS_TLS | TLS_LD; |
8187 | tls_m &= ~TLS_LD; | |
8188 | } | |
8189 | else if ((tls_m & TLS_GD) != 0) | |
8190 | { | |
8191 | tls_ty = TLS_TLS | TLS_GD; | |
8192 | tls_m &= ~TLS_GD; | |
8193 | } | |
8194 | else if ((tls_m & TLS_DTPREL) != 0) | |
8195 | { | |
8196 | tls_ty = TLS_TLS | TLS_DTPREL; | |
8197 | tls_m &= ~TLS_DTPREL; | |
8198 | } | |
8199 | else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) | |
8200 | { | |
8201 | tls_ty = TLS_TLS | TLS_TPREL; | |
8202 | tls_m = 0; | |
7619e7c7 | 8203 | } |
7619e7c7 | 8204 | |
70bccea4 | 8205 | /* Generate relocs for the dynamic linker. */ |
4e795f50 | 8206 | if ((info->shared || indx != 0) |
d6e14abc AM |
8207 | && (offp == &htab->tlsld_got.offset |
8208 | || h == NULL | |
4e795f50 AM |
8209 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
8210 | || h->root.type != bfd_link_hash_undefweak)) | |
7619e7c7 | 8211 | { |
91e21fb7 | 8212 | asection *rsec = htab->relgot; |
91d6fa6a | 8213 | bfd_byte * loc; |
91e21fb7 | 8214 | |
0bed072f AM |
8215 | if (ifunc != NULL) |
8216 | rsec = htab->reliplt; | |
70bccea4 AM |
8217 | outrel.r_offset = (htab->got->output_section->vma |
8218 | + htab->got->output_offset | |
8219 | + off); | |
e515b051 | 8220 | outrel.r_addend = 0; |
70bccea4 AM |
8221 | if (tls_ty & (TLS_LD | TLS_GD)) |
8222 | { | |
8223 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
8224 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8225 | { | |
25f23106 AM |
8226 | loc = rsec->contents; |
8227 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8228 | * sizeof (Elf32_External_Rela)); |
8229 | bfd_elf32_swap_reloca_out (output_bfd, | |
8230 | &outrel, loc); | |
e515b051 | 8231 | outrel.r_offset += 4; |
70bccea4 AM |
8232 | outrel.r_info |
8233 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
8234 | } |
8235 | } | |
8236 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
8237 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
8238 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8239 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 8240 | else if (indx != 0) |
70bccea4 | 8241 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
8242 | else if (ifunc != NULL) |
8243 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8244 | else | |
8245 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 8246 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
8247 | { |
8248 | outrel.r_addend += relocation; | |
8249 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
8250 | { |
8251 | if (htab->elf.tls_sec == NULL) | |
8252 | outrel.r_addend = 0; | |
8253 | else | |
8254 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
8255 | } | |
e515b051 | 8256 | } |
25f23106 AM |
8257 | loc = rsec->contents; |
8258 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
8259 | * sizeof (Elf32_External_Rela)); |
8260 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
8261 | } |
8262 | ||
70bccea4 AM |
8263 | /* Init the .got section contents if we're not |
8264 | emitting a reloc. */ | |
8265 | else | |
7619e7c7 | 8266 | { |
70bccea4 AM |
8267 | bfd_vma value = relocation; |
8268 | ||
7b609f53 AM |
8269 | if (tls_ty == (TLS_TLS | TLS_LD)) |
8270 | value = 1; | |
8271 | else if (tls_ty != 0) | |
70bccea4 | 8272 | { |
989f9879 AM |
8273 | if (htab->elf.tls_sec == NULL) |
8274 | value = 0; | |
8275 | else | |
8276 | { | |
8277 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
8278 | if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
8279 | value += DTP_OFFSET - TP_OFFSET; | |
8280 | } | |
70bccea4 | 8281 | |
7b609f53 AM |
8282 | if (tls_ty == (TLS_TLS | TLS_GD)) |
8283 | { | |
8284 | bfd_put_32 (output_bfd, value, | |
8285 | htab->got->contents + off + 4); | |
8286 | value = 1; | |
8287 | } | |
70bccea4 | 8288 | } |
70bccea4 AM |
8289 | bfd_put_32 (output_bfd, value, |
8290 | htab->got->contents + off); | |
7619e7c7 | 8291 | } |
70bccea4 AM |
8292 | |
8293 | off += 4; | |
8294 | if (tls_ty & (TLS_LD | TLS_GD)) | |
8295 | off += 4; | |
7619e7c7 | 8296 | } |
70bccea4 AM |
8297 | while (tls_m != 0); |
8298 | ||
8299 | off = *offp; | |
8300 | *offp = off | 1; | |
7619e7c7 AM |
8301 | } |
8302 | ||
8303 | if (off >= (bfd_vma) -2) | |
8304 | abort (); | |
8305 | ||
70bccea4 AM |
8306 | if ((tls_type & TLS_TLS) != 0) |
8307 | { | |
8308 | if (tls_type != (TLS_TLS | TLS_LD)) | |
8309 | { | |
8310 | if ((tls_mask & TLS_LD) != 0 | |
8311 | && !(h == NULL | |
f5385ebf | 8312 | || !h->def_dynamic)) |
70bccea4 AM |
8313 | off += 8; |
8314 | if (tls_type != (TLS_TLS | TLS_GD)) | |
8315 | { | |
8316 | if ((tls_mask & TLS_GD) != 0) | |
8317 | off += 8; | |
8318 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
8319 | { | |
8320 | if ((tls_mask & TLS_DTPREL) != 0) | |
8321 | off += 4; | |
8322 | } | |
8323 | } | |
8324 | } | |
8325 | } | |
8326 | ||
e87d4038 AM |
8327 | relocation = (htab->got->output_section->vma |
8328 | + htab->got->output_offset | |
8329 | + off | |
8330 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
8331 | |
8332 | /* Addends on got relocations don't make much sense. | |
8333 | x+off@got is actually x@got+off, and since the got is | |
8334 | generated by a hash table traversal, the value in the | |
8335 | got at entry m+n bears little relation to the entry m. */ | |
8336 | if (addend != 0) | |
25f53a85 | 8337 | info->callbacks->einfo |
8de848d8 | 8338 | (_("%P: %H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 8339 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 8340 | howto->name, |
7619e7c7 AM |
8341 | sym_name); |
8342 | } | |
86c95733 | 8343 | break; |
7619e7c7 | 8344 | |
86c95733 | 8345 | /* Relocations that need no special processing. */ |
7619e7c7 | 8346 | case R_PPC_LOCAL24PC: |
252b5132 RH |
8347 | /* It makes no sense to point a local relocation |
8348 | at a symbol not in this object. */ | |
7b609f53 | 8349 | if (unresolved_reloc) |
252b5132 | 8350 | { |
464e1740 ILT |
8351 | if (! (*info->callbacks->undefined_symbol) (info, |
8352 | h->root.root.string, | |
8353 | input_bfd, | |
8354 | input_section, | |
5cc7c785 | 8355 | rel->r_offset, |
b34976b6 AM |
8356 | TRUE)) |
8357 | return FALSE; | |
252b5132 RH |
8358 | continue; |
8359 | } | |
8360 | break; | |
8361 | ||
7619e7c7 AM |
8362 | case R_PPC_DTPREL16: |
8363 | case R_PPC_DTPREL16_LO: | |
8364 | case R_PPC_DTPREL16_HI: | |
8365 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8366 | if (htab->elf.tls_sec != NULL) |
8367 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8368 | break; |
8369 | ||
70bccea4 AM |
8370 | /* Relocations that may need to be propagated if this is a shared |
8371 | object. */ | |
7619e7c7 AM |
8372 | case R_PPC_TPREL16: |
8373 | case R_PPC_TPREL16_LO: | |
8374 | case R_PPC_TPREL16_HI: | |
8375 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8376 | if (h != NULL |
8377 | && h->root.type == bfd_link_hash_undefweak | |
8378 | && h->dynindx == -1) | |
8379 | { | |
8380 | /* Make this relocation against an undefined weak symbol | |
8381 | resolve to zero. This is really just a tweak, since | |
8382 | code using weak externs ought to check that they are | |
8383 | defined before using them. */ | |
8384 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
8385 | unsigned int insn = bfd_get_32 (output_bfd, p); | |
8386 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); | |
8387 | if (insn != 0) | |
8388 | bfd_put_32 (output_bfd, insn, p); | |
8389 | break; | |
8390 | } | |
989f9879 AM |
8391 | if (htab->elf.tls_sec != NULL) |
8392 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8393 | /* The TPREL16 relocs shouldn't really be used in shared |
8394 | libs as they will result in DT_TEXTREL being set, but | |
8395 | support them anyway. */ | |
8396 | goto dodyn; | |
8397 | ||
8398 | case R_PPC_TPREL32: | |
989f9879 AM |
8399 | if (htab->elf.tls_sec != NULL) |
8400 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8401 | goto dodyn; |
8402 | ||
8403 | case R_PPC_DTPREL32: | |
989f9879 AM |
8404 | if (htab->elf.tls_sec != NULL) |
8405 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8406 | goto dodyn; |
8407 | ||
e515b051 AM |
8408 | case R_PPC_DTPMOD32: |
8409 | relocation = 1; | |
8410 | addend = 0; | |
8411 | goto dodyn; | |
8412 | ||
d7128ce4 AM |
8413 | case R_PPC_REL16: |
8414 | case R_PPC_REL16_LO: | |
8415 | case R_PPC_REL16_HI: | |
8416 | case R_PPC_REL16_HA: | |
8417 | break; | |
8418 | ||
7619e7c7 | 8419 | case R_PPC_REL32: |
625af618 AM |
8420 | if (h == NULL || h == htab->elf.hgot) |
8421 | break; | |
8422 | /* fall through */ | |
8423 | ||
8424 | case R_PPC_ADDR32: | |
8425 | case R_PPC_ADDR16: | |
8426 | case R_PPC_ADDR16_LO: | |
8427 | case R_PPC_ADDR16_HI: | |
8428 | case R_PPC_ADDR16_HA: | |
8429 | case R_PPC_UADDR32: | |
8430 | case R_PPC_UADDR16: | |
8431 | goto dodyn; | |
8432 | ||
b9c361e0 JL |
8433 | case R_PPC_VLE_REL8: |
8434 | case R_PPC_VLE_REL15: | |
8435 | case R_PPC_VLE_REL24: | |
625af618 | 8436 | case R_PPC_REL24: |
7619e7c7 AM |
8437 | case R_PPC_REL14: |
8438 | case R_PPC_REL14_BRTAKEN: | |
8439 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8440 | /* If these relocations are not to a named symbol, they can be |
8441 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8442 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8443 | || h == htab->elf.hgot) |
252b5132 | 8444 | break; |
70bccea4 | 8445 | /* fall through */ |
252b5132 | 8446 | |
7619e7c7 | 8447 | case R_PPC_ADDR24: |
7619e7c7 AM |
8448 | case R_PPC_ADDR14: |
8449 | case R_PPC_ADDR14_BRTAKEN: | |
8450 | case R_PPC_ADDR14_BRNTAKEN: | |
625af618 AM |
8451 | if (h != NULL && !info->shared) |
8452 | break; | |
8453 | /* fall through */ | |
8454 | ||
7619e7c7 | 8455 | dodyn: |
3348747a NS |
8456 | if ((input_section->flags & SEC_ALLOC) == 0 |
8457 | || is_vxworks_tls) | |
c87b5a93 | 8458 | break; |
c87b5a93 | 8459 | |
ee05f2fe | 8460 | if ((info->shared |
89200bf8 AM |
8461 | && !(h != NULL |
8462 | && ((h->root.type == bfd_link_hash_undefined | |
8463 | && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN | |
8464 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL)) | |
8465 | || (h->root.type == bfd_link_hash_undefweak | |
8466 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))) | |
1d483afe | 8467 | && (must_be_dyn_reloc (info, r_type) |
f6c52c13 | 8468 | || !SYMBOL_CALLS_LOCAL (info, h))) |
ee05f2fe AM |
8469 | || (ELIMINATE_COPY_RELOCS |
8470 | && !info->shared | |
ee05f2fe AM |
8471 | && h != NULL |
8472 | && h->dynindx != -1 | |
f5385ebf | 8473 | && !h->non_got_ref |
de972ffa | 8474 | && !h->def_regular)) |
252b5132 | 8475 | { |
0bb2d96a | 8476 | int skip; |
f95f8542 AM |
8477 | bfd_byte *loc; |
8478 | asection *sreloc; | |
252b5132 | 8479 | #ifdef DEBUG |
55fd94b0 AM |
8480 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8481 | "create relocation for %s\n", | |
70bccea4 AM |
8482 | (h && h->root.root.string |
8483 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8484 | #endif |
8485 | ||
8486 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8487 | are copied into the output file to be resolved at run |
8488 | time. */ | |
f95f8542 AM |
8489 | sreloc = elf_section_data (input_section)->sreloc; |
8490 | if (ifunc) | |
8491 | sreloc = htab->reliplt; | |
252b5132 | 8492 | if (sreloc == NULL) |
f95f8542 | 8493 | return FALSE; |
252b5132 | 8494 | |
0bb2d96a | 8495 | skip = 0; |
5b914448 AM |
8496 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8497 | input_section, | |
8498 | rel->r_offset); | |
0bb2d96a JJ |
8499 | if (outrel.r_offset == (bfd_vma) -1 |
8500 | || outrel.r_offset == (bfd_vma) -2) | |
8501 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8502 | outrel.r_offset += (input_section->output_section->vma |
8503 | + input_section->output_offset); | |
8504 | ||
8505 | if (skip) | |
8506 | memset (&outrel, 0, sizeof outrel); | |
89200bf8 AM |
8507 | else if ((h != NULL |
8508 | && (h->root.type == bfd_link_hash_undefined | |
8509 | || h->root.type == bfd_link_hash_undefweak)) | |
8510 | || !SYMBOL_REFERENCES_LOCAL (info, h)) | |
252b5132 | 8511 | { |
14acf4dc | 8512 | BFD_ASSERT (h->dynindx != -1); |
7619e7c7 | 8513 | unresolved_reloc = FALSE; |
252b5132 RH |
8514 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
8515 | outrel.r_addend = rel->r_addend; | |
8516 | } | |
8517 | else | |
8518 | { | |
47388f4c AM |
8519 | outrel.r_addend = relocation + rel->r_addend; |
8520 | ||
25f23106 | 8521 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8522 | { |
89200bf8 | 8523 | long indx = 0; |
252b5132 | 8524 | |
25f23106 AM |
8525 | if (ifunc != NULL) |
8526 | { | |
8527 | /* If we get here when building a static | |
8528 | executable, then the libc startup function | |
8529 | responsible for applying indirect function | |
8530 | relocations is going to complain about | |
8531 | the reloc type. | |
8532 | If we get here when building a dynamic | |
8533 | executable, it will be because we have | |
8534 | a text relocation. The dynamic loader | |
8535 | will set the text segment writable and | |
8536 | non-executable to apply text relocations. | |
8537 | So we'll segfault when trying to run the | |
8538 | indirection function to resolve the reloc. */ | |
25f53a85 | 8539 | info->callbacks->einfo |
8de848d8 | 8540 | (_("%P: %H: relocation %s for indirect " |
25f53a85 AM |
8541 | "function %s unsupported\n"), |
8542 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8543 | howto->name, |
8544 | sym_name); | |
8545 | ret = FALSE; | |
8546 | } | |
cf35638d | 8547 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8548 | ; |
252b5132 RH |
8549 | else if (sec == NULL || sec->owner == NULL) |
8550 | { | |
8551 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8552 | ret = FALSE; |
252b5132 RH |
8553 | } |
8554 | else | |
8555 | { | |
8556 | asection *osec; | |
8557 | ||
47388f4c AM |
8558 | /* We are turning this relocation into one |
8559 | against a section symbol. It would be | |
8560 | proper to subtract the symbol's value, | |
8561 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8562 | but ld.so expects buggy relocs. |
8563 | FIXME: Why not always use a zero index? */ | |
252b5132 RH |
8564 | osec = sec->output_section; |
8565 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
8566 | if (indx == 0) |
8567 | { | |
8568 | osec = htab->elf.text_index_section; | |
8569 | indx = elf_section_data (osec)->dynindx; | |
8570 | } | |
8571 | BFD_ASSERT (indx != 0); | |
252b5132 | 8572 | #ifdef DEBUG |
74541ad4 | 8573 | if (indx == 0) |
e460dd0d | 8574 | printf ("indx=%ld section=%s flags=%08x name=%s\n", |
55fd94b0 AM |
8575 | indx, osec->name, osec->flags, |
8576 | h->root.root.string); | |
252b5132 RH |
8577 | #endif |
8578 | } | |
8579 | ||
8580 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8581 | } |
25f23106 AM |
8582 | else if (ifunc != NULL) |
8583 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8584 | else | |
8585 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8586 | } |
8587 | ||
947216bf AM |
8588 | loc = sreloc->contents; |
8589 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8590 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8591 | |
2243deae | 8592 | if (skip == -1) |
252b5132 | 8593 | continue; |
2243deae L |
8594 | |
8595 | /* This reloc will be computed at runtime. We clear the memory | |
8596 | so that it contains predictable value. */ | |
8597 | if (! skip | |
8598 | && ((input_section->flags & SEC_ALLOC) != 0 | |
8599 | || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) | |
8600 | { | |
8601 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8602 | addend = 0; | |
8603 | break; | |
8604 | } | |
252b5132 | 8605 | } |
252b5132 RH |
8606 | break; |
8607 | ||
32af9f6e AM |
8608 | case R_PPC_RELAX_PLT: |
8609 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8610 | if (h != NULL) |
8611 | { | |
32af9f6e AM |
8612 | struct plt_entry *ent; |
8613 | bfd_vma got2_addend = 0; | |
8614 | ||
8615 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8616 | { | |
8617 | if (info->shared) | |
8618 | got2_addend = addend; | |
8619 | addend = 0; | |
8620 | } | |
8621 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8622 | if (htab->plt_type == PLT_NEW) |
8623 | relocation = (htab->glink->output_section->vma | |
8624 | + htab->glink->output_offset | |
8625 | + ent->glink_offset); | |
8626 | else | |
8627 | relocation = (htab->plt->output_section->vma | |
8628 | + htab->plt->output_offset | |
8629 | + ent->plt.offset); | |
8630 | } | |
b4a38de6 AM |
8631 | /* Fall thru */ |
8632 | ||
32af9f6e | 8633 | case R_PPC_RELAX: |
9abc968f | 8634 | { |
53291d1f AM |
8635 | const int *stub; |
8636 | size_t size; | |
8637 | size_t insn_offset = rel->r_offset; | |
8638 | unsigned int insn; | |
9abc968f | 8639 | |
53291d1f AM |
8640 | if (info->shared) |
8641 | { | |
8642 | relocation -= (input_section->output_section->vma | |
8643 | + input_section->output_offset | |
8644 | + rel->r_offset - 4); | |
8645 | stub = shared_stub_entry; | |
8646 | bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12); | |
8647 | bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8); | |
8648 | bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4); | |
8649 | stub += 3; | |
8650 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8651 | } | |
8652 | else | |
8653 | { | |
8654 | stub = stub_entry; | |
8655 | size = ARRAY_SIZE (stub_entry); | |
8656 | } | |
9abc968f | 8657 | |
9abc968f | 8658 | relocation += addend; |
53291d1f AM |
8659 | if (info->relocatable) |
8660 | relocation = 0; | |
8661 | ||
8662 | /* First insn is HA, second is LO. */ | |
8663 | insn = *stub++; | |
8664 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
8665 | bfd_put_32 (output_bfd, insn, contents + insn_offset); | |
8666 | insn_offset += 4; | |
8667 | ||
8668 | insn = *stub++; | |
8669 | insn |= relocation & 0xffff; | |
8670 | bfd_put_32 (output_bfd, insn, contents + insn_offset); | |
8671 | insn_offset += 4; | |
8672 | size -= 2; | |
8673 | ||
8674 | while (size != 0) | |
8675 | { | |
8676 | insn = *stub++; | |
8677 | --size; | |
8678 | bfd_put_32 (output_bfd, insn, contents + insn_offset); | |
8679 | insn_offset += 4; | |
8680 | } | |
9bc4e62b NS |
8681 | |
8682 | /* Rewrite the reloc and convert one of the trailing nop | |
8683 | relocs to describe this relocation. */ | |
8684 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
8685 | /* The relocs are at the bottom 2 bytes */ | |
53291d1f | 8686 | rel[0].r_offset += d_offset; |
9bc4e62b NS |
8687 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); |
8688 | rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
8689 | rel[1].r_offset += 4; | |
8690 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
8691 | rel++; | |
9abc968f | 8692 | } |
8517fae7 | 8693 | continue; |
deaaf2f3 | 8694 | |
70bccea4 | 8695 | /* Indirect .sdata relocation. */ |
7619e7c7 | 8696 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 8697 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
8698 | if (!is_static_defined (htab->sdata[0].sym)) |
8699 | { | |
8700 | unresolved_reloc = TRUE; | |
8701 | break; | |
8702 | } | |
7619e7c7 | 8703 | relocation |
76750a2f AM |
8704 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
8705 | h, relocation, rel); | |
bd6c6e2b | 8706 | addend = 0; |
252b5132 RH |
8707 | break; |
8708 | ||
70bccea4 | 8709 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 8710 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 8711 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
8712 | if (!is_static_defined (htab->sdata[1].sym)) |
8713 | { | |
8714 | unresolved_reloc = TRUE; | |
8715 | break; | |
8716 | } | |
7619e7c7 | 8717 | relocation |
76750a2f AM |
8718 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
8719 | h, relocation, rel); | |
bd6c6e2b | 8720 | addend = 0; |
252b5132 RH |
8721 | break; |
8722 | ||
70bccea4 AM |
8723 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
8724 | section, not the actual VMA. This is appropriate when generating | |
8725 | an embedded ELF object, for which the .got section acts like the | |
8726 | AIX .toc section. */ | |
7619e7c7 | 8727 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
8728 | if (sec == NULL || sec->output_section == NULL) |
8729 | { | |
8730 | unresolved_reloc = TRUE; | |
8731 | break; | |
8732 | } | |
a0f49396 NC |
8733 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
8734 | ".got") == 0 | |
8735 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
8736 | ".cgot") == 0); | |
252b5132 | 8737 | |
3b4f3a11 | 8738 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
8739 | break; |
8740 | ||
7619e7c7 | 8741 | case R_PPC_PLTREL24: |
f75e0e33 AM |
8742 | if (h != NULL && ifunc == NULL) |
8743 | { | |
8744 | struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2, | |
8745 | info->shared ? addend : 0); | |
8746 | if (ent == NULL | |
8747 | || htab->plt == NULL) | |
8748 | { | |
8749 | /* We didn't make a PLT entry for this symbol. This | |
8750 | happens when statically linking PIC code, or when | |
8751 | using -Bsymbolic. */ | |
8752 | } | |
8753 | else | |
8754 | { | |
8755 | /* Relocation is to the entry for this symbol in the | |
8756 | procedure linkage table. */ | |
8757 | unresolved_reloc = FALSE; | |
8758 | if (htab->plt_type == PLT_NEW) | |
8759 | relocation = (htab->glink->output_section->vma | |
8760 | + htab->glink->output_offset | |
8761 | + ent->glink_offset); | |
8762 | else | |
8763 | relocation = (htab->plt->output_section->vma | |
8764 | + htab->plt->output_offset | |
8765 | + ent->plt.offset); | |
8766 | } | |
8767 | } | |
252b5132 | 8768 | |
f75e0e33 AM |
8769 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
8770 | addend specifies the GOT pointer offset within .got2. | |
8771 | Don't apply it to the relocation field. */ | |
8772 | addend = 0; | |
8da6118f | 8773 | break; |
252b5132 | 8774 | |
70bccea4 | 8775 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 8776 | case R_PPC_SDAREL16: |
252b5132 RH |
8777 | { |
8778 | const char *name; | |
bd6c6e2b | 8779 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 8780 | |
bd6c6e2b AM |
8781 | if (sec == NULL |
8782 | || sec->output_section == NULL | |
8783 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
8784 | { |
8785 | unresolved_reloc = TRUE; | |
8786 | break; | |
8787 | } | |
bd6c6e2b | 8788 | addend -= SYM_VAL (sda); |
3b4f3a11 | 8789 | |
a0f49396 | 8790 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8791 | if (!(strcmp (name, ".sdata") == 0 |
8792 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 8793 | { |
25f53a85 | 8794 | info->callbacks->einfo |
8de848d8 | 8795 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 8796 | "in the wrong output section (%s)\n"), |
d003868e | 8797 | input_bfd, |
55fd94b0 AM |
8798 | sym_name, |
8799 | howto->name, | |
8800 | name); | |
252b5132 | 8801 | } |
252b5132 RH |
8802 | } |
8803 | break; | |
8804 | ||
70bccea4 | 8805 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 8806 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
8807 | { |
8808 | const char *name; | |
bd6c6e2b | 8809 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 8810 | |
bd6c6e2b AM |
8811 | if (sec == NULL |
8812 | || sec->output_section == NULL | |
8813 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
8814 | { |
8815 | unresolved_reloc = TRUE; | |
8816 | break; | |
8817 | } | |
bd6c6e2b | 8818 | addend -= SYM_VAL (sda); |
3b4f3a11 | 8819 | |
a0f49396 | 8820 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8821 | if (!(strcmp (name, ".sdata2") == 0 |
8822 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 8823 | { |
25f53a85 | 8824 | info->callbacks->einfo |
8de848d8 | 8825 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 8826 | "in the wrong output section (%s)\n"), |
d003868e | 8827 | input_bfd, |
55fd94b0 AM |
8828 | sym_name, |
8829 | howto->name, | |
8830 | name); | |
252b5132 | 8831 | } |
252b5132 RH |
8832 | } |
8833 | break; | |
8834 | ||
b9c361e0 | 8835 | case R_PPC_VLE_LO16A: |
86c95733 AM |
8836 | relocation = relocation + addend; |
8837 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
8838 | relocation, split16a_type); | |
b9c361e0 JL |
8839 | continue; |
8840 | ||
8841 | case R_PPC_VLE_LO16D: | |
86c95733 AM |
8842 | relocation = relocation + addend; |
8843 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
8844 | relocation, split16d_type); | |
b9c361e0 JL |
8845 | continue; |
8846 | ||
8847 | case R_PPC_VLE_HI16A: | |
86c95733 AM |
8848 | relocation = (relocation + addend) >> 16; |
8849 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
8850 | relocation, split16a_type); | |
b9c361e0 JL |
8851 | continue; |
8852 | ||
8853 | case R_PPC_VLE_HI16D: | |
86c95733 AM |
8854 | relocation = (relocation + addend) >> 16; |
8855 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
8856 | relocation, split16d_type); | |
b9c361e0 JL |
8857 | continue; |
8858 | ||
8859 | case R_PPC_VLE_HA16A: | |
86c95733 AM |
8860 | relocation = (relocation + addend + 0x8000) >> 16; |
8861 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
8862 | relocation, split16a_type); | |
b9c361e0 JL |
8863 | continue; |
8864 | ||
8865 | case R_PPC_VLE_HA16D: | |
86c95733 AM |
8866 | relocation = (relocation + addend + 0x8000) >> 16; |
8867 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
8868 | relocation, split16d_type); | |
b9c361e0 JL |
8869 | continue; |
8870 | ||
70bccea4 | 8871 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 8872 | case R_PPC_EMB_SDA21: |
b9c361e0 | 8873 | case R_PPC_VLE_SDA21: |
7619e7c7 | 8874 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 8875 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
8876 | { |
8877 | const char *name; | |
8878 | int reg; | |
86c95733 | 8879 | unsigned int insn; |
bd6c6e2b | 8880 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 8881 | |
3b4f3a11 AM |
8882 | if (sec == NULL || sec->output_section == NULL) |
8883 | { | |
8884 | unresolved_reloc = TRUE; | |
8885 | break; | |
8886 | } | |
8887 | ||
a0f49396 | 8888 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8889 | if (strcmp (name, ".sdata") == 0 |
8890 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
8891 | { |
8892 | reg = 13; | |
bd6c6e2b | 8893 | sda = htab->sdata[0].sym; |
252b5132 | 8894 | } |
93d1b056 AM |
8895 | else if (strcmp (name, ".sdata2") == 0 |
8896 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
8897 | { |
8898 | reg = 2; | |
bd6c6e2b | 8899 | sda = htab->sdata[1].sym; |
252b5132 | 8900 | } |
8da6118f KH |
8901 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
8902 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
8903 | { |
8904 | reg = 0; | |
8905 | } | |
252b5132 RH |
8906 | else |
8907 | { | |
25f53a85 | 8908 | info->callbacks->einfo |
8de848d8 | 8909 | (_("%P: %B: the target (%s) of a %s relocation is " |
25f53a85 | 8910 | "in the wrong output section (%s)\n"), |
d003868e | 8911 | input_bfd, |
55fd94b0 AM |
8912 | sym_name, |
8913 | howto->name, | |
8914 | name); | |
252b5132 RH |
8915 | |
8916 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8917 | ret = FALSE; |
252b5132 RH |
8918 | continue; |
8919 | } | |
8920 | ||
bd6c6e2b AM |
8921 | if (sda != NULL) |
8922 | { | |
8923 | if (!is_static_defined (sda)) | |
8924 | { | |
8925 | unresolved_reloc = TRUE; | |
8926 | break; | |
8927 | } | |
8928 | addend -= SYM_VAL (sda); | |
8929 | } | |
8930 | ||
86c95733 | 8931 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
b9c361e0 JL |
8932 | if (reg == 0 |
8933 | && (r_type == R_PPC_VLE_SDA21 | |
8934 | || r_type == R_PPC_VLE_SDA21_LO)) | |
8935 | { | |
86c95733 AM |
8936 | relocation = relocation + addend; |
8937 | addend = 0; | |
8938 | ||
8939 | /* Force e_li insn, keeping RT from original insn. */ | |
8940 | insn &= 0x1f << 21; | |
8941 | insn |= 28u << 26; | |
8942 | ||
8943 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
8944 | /* Top 4 bits of value to 17..20. */ | |
8945 | insn |= (relocation & 0xf0000) >> 5; | |
8946 | /* Next 5 bits of the value to 11..15. */ | |
8947 | insn |= (relocation & 0xf800) << 5; | |
8948 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
8949 | insn |= relocation & 0x7ff; | |
8950 | ||
c3301df1 AM |
8951 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
8952 | ||
8953 | if (r_type == R_PPC_VLE_SDA21 | |
8954 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
8955 | goto overflow; | |
8956 | continue; | |
b9c361e0 JL |
8957 | } |
8958 | else if (r_type == R_PPC_EMB_SDA21 | |
8959 | || r_type == R_PPC_VLE_SDA21 | |
8960 | || r_type == R_PPC_VLE_SDA21_LO) | |
91d6fa6a | 8961 | { |
86c95733 | 8962 | /* Fill in register field. */ |
252b5132 | 8963 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); |
252b5132 | 8964 | } |
86c95733 | 8965 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
8966 | } |
8967 | break; | |
8968 | ||
b9c361e0 JL |
8969 | case R_PPC_VLE_SDAREL_LO16A: |
8970 | case R_PPC_VLE_SDAREL_LO16D: | |
8971 | case R_PPC_VLE_SDAREL_HI16A: | |
8972 | case R_PPC_VLE_SDAREL_HI16D: | |
8973 | case R_PPC_VLE_SDAREL_HA16A: | |
8974 | case R_PPC_VLE_SDAREL_HA16D: | |
8975 | { | |
8976 | bfd_vma value; | |
8977 | const char *name; | |
8978 | //int reg; | |
8979 | struct elf_link_hash_entry *sda = NULL; | |
8980 | ||
8981 | if (sec == NULL || sec->output_section == NULL) | |
8982 | { | |
8983 | unresolved_reloc = TRUE; | |
8984 | break; | |
8985 | } | |
8986 | ||
a0f49396 | 8987 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8988 | if (strcmp (name, ".sdata") == 0 |
8989 | || strcmp (name, ".sbss") == 0) | |
b9c361e0 JL |
8990 | { |
8991 | //reg = 13; | |
8992 | sda = htab->sdata[0].sym; | |
8993 | } | |
93d1b056 AM |
8994 | else if (strcmp (name, ".sdata2") == 0 |
8995 | || strcmp (name, ".sbss2") == 0) | |
b9c361e0 JL |
8996 | { |
8997 | //reg = 2; | |
8998 | sda = htab->sdata[1].sym; | |
8999 | } | |
9000 | else | |
9001 | { | |
9002 | (*_bfd_error_handler) | |
9003 | (_("%B: the target (%s) of a %s relocation is " | |
9004 | "in the wrong output section (%s)"), | |
9005 | input_bfd, | |
9006 | sym_name, | |
9007 | howto->name, | |
9008 | name); | |
9009 | ||
9010 | bfd_set_error (bfd_error_bad_value); | |
9011 | ret = FALSE; | |
9012 | continue; | |
9013 | } | |
9014 | ||
9015 | if (sda != NULL) | |
9016 | { | |
9017 | if (!is_static_defined (sda)) | |
9018 | { | |
9019 | unresolved_reloc = TRUE; | |
9020 | break; | |
9021 | } | |
9022 | } | |
9023 | ||
86c95733 AM |
9024 | value = (sda->root.u.def.section->output_section->vma |
9025 | + sda->root.u.def.section->output_offset | |
9026 | + addend); | |
9027 | ||
9028 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
9029 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9030 | value, split16a_type); | |
9031 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) | |
9032 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9033 | value, split16d_type); | |
9034 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) | |
b9c361e0 | 9035 | { |
86c95733 AM |
9036 | value = value >> 16; |
9037 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9038 | value, split16a_type); | |
b9c361e0 | 9039 | } |
86c95733 | 9040 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 9041 | { |
86c95733 AM |
9042 | value = value >> 16; |
9043 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9044 | value, split16d_type); | |
b9c361e0 | 9045 | } |
86c95733 | 9046 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 9047 | { |
86c95733 AM |
9048 | value = (value + 0x8000) >> 16; |
9049 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9050 | value, split16a_type); | |
b9c361e0 | 9051 | } |
86c95733 | 9052 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 9053 | { |
86c95733 AM |
9054 | value = (value + 0x8000) >> 16; |
9055 | ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset, | |
9056 | value, split16d_type); | |
b9c361e0 JL |
9057 | } |
9058 | } | |
9059 | continue; | |
9060 | ||
70bccea4 | 9061 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
9062 | case R_PPC_SECTOFF: |
9063 | case R_PPC_SECTOFF_LO: | |
9064 | case R_PPC_SECTOFF_HI: | |
9065 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
9066 | if (sec == NULL || sec->output_section == NULL) |
9067 | { | |
9068 | unresolved_reloc = TRUE; | |
9069 | break; | |
9070 | } | |
252b5132 | 9071 | addend -= sec->output_section->vma; |
252b5132 RH |
9072 | break; |
9073 | ||
70bccea4 | 9074 | /* Negative relocations. */ |
7619e7c7 AM |
9075 | case R_PPC_EMB_NADDR32: |
9076 | case R_PPC_EMB_NADDR16: | |
9077 | case R_PPC_EMB_NADDR16_LO: | |
9078 | case R_PPC_EMB_NADDR16_HI: | |
9079 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 9080 | addend -= 2 * relocation; |
252b5132 RH |
9081 | break; |
9082 | ||
7619e7c7 AM |
9083 | case R_PPC_COPY: |
9084 | case R_PPC_GLOB_DAT: | |
9085 | case R_PPC_JMP_SLOT: | |
9086 | case R_PPC_RELATIVE: | |
e054468f | 9087 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
9088 | case R_PPC_PLT32: |
9089 | case R_PPC_PLTREL32: | |
9090 | case R_PPC_PLT16_LO: | |
9091 | case R_PPC_PLT16_HI: | |
9092 | case R_PPC_PLT16_HA: | |
9093 | case R_PPC_ADDR30: | |
9094 | case R_PPC_EMB_RELSEC16: | |
9095 | case R_PPC_EMB_RELST_LO: | |
9096 | case R_PPC_EMB_RELST_HI: | |
9097 | case R_PPC_EMB_RELST_HA: | |
9098 | case R_PPC_EMB_BIT_FLD: | |
25f53a85 | 9099 | info->callbacks->einfo |
8de848d8 | 9100 | (_("%P: %B: relocation %s is not yet supported for symbol %s\n"), |
d003868e | 9101 | input_bfd, |
7619e7c7 AM |
9102 | howto->name, |
9103 | sym_name); | |
252b5132 RH |
9104 | |
9105 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9106 | ret = FALSE; |
252b5132 | 9107 | continue; |
7619e7c7 | 9108 | } |
252b5132 | 9109 | |
7619e7c7 AM |
9110 | /* Do any further special processing. */ |
9111 | switch (r_type) | |
9112 | { | |
9113 | default: | |
9114 | break; | |
9115 | ||
9116 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 9117 | case R_PPC_REL16_HA: |
7619e7c7 AM |
9118 | case R_PPC_SECTOFF_HA: |
9119 | case R_PPC_TPREL16_HA: | |
9120 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
9121 | case R_PPC_EMB_NADDR16_HA: |
9122 | case R_PPC_EMB_RELST_HA: | |
9123 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 9124 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
9125 | 'sec' would be NULL, and we should leave the symbol |
9126 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
9127 | if (sec == NULL) |
9128 | break; | |
9129 | /* Fall thru */ | |
9130 | ||
9131 | case R_PPC_PLT16_HA: | |
9132 | case R_PPC_GOT16_HA: | |
9133 | case R_PPC_GOT_TLSGD16_HA: | |
9134 | case R_PPC_GOT_TLSLD16_HA: | |
9135 | case R_PPC_GOT_TPREL16_HA: | |
9136 | case R_PPC_GOT_DTPREL16_HA: | |
9137 | /* Add 0x10000 if sign bit in 0:15 is set. | |
9138 | Bits 0:15 are not used. */ | |
9139 | addend += 0x8000; | |
7619e7c7 | 9140 | break; |
1fe532cf AM |
9141 | |
9142 | case R_PPC_ADDR16: | |
9143 | case R_PPC_ADDR16_LO: | |
9144 | case R_PPC_GOT16: | |
9145 | case R_PPC_GOT16_LO: | |
9146 | case R_PPC_SDAREL16: | |
9147 | case R_PPC_SECTOFF: | |
9148 | case R_PPC_SECTOFF_LO: | |
9149 | case R_PPC_DTPREL16: | |
9150 | case R_PPC_DTPREL16_LO: | |
9151 | case R_PPC_TPREL16: | |
9152 | case R_PPC_TPREL16_LO: | |
9153 | case R_PPC_GOT_TLSGD16: | |
9154 | case R_PPC_GOT_TLSGD16_LO: | |
9155 | case R_PPC_GOT_TLSLD16: | |
9156 | case R_PPC_GOT_TLSLD16_LO: | |
9157 | case R_PPC_GOT_DTPREL16: | |
9158 | case R_PPC_GOT_DTPREL16_LO: | |
9159 | case R_PPC_GOT_TPREL16: | |
9160 | case R_PPC_GOT_TPREL16_LO: | |
9161 | { | |
9162 | /* The 32-bit ABI lacks proper relocations to deal with | |
9163 | certain 64-bit instructions. Prevent damage to bits | |
9164 | that make up part of the insn opcode. */ | |
9165 | unsigned int insn, mask, lobit; | |
9166 | ||
9167 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
9168 | mask = 0; | |
9169 | if (is_insn_ds_form (insn)) | |
9170 | mask = 3; | |
9171 | else if (is_insn_dq_form (insn)) | |
9172 | mask = 15; | |
9173 | else | |
9174 | break; | |
9175 | lobit = mask & (relocation + addend); | |
9176 | if (lobit != 0) | |
9177 | { | |
9178 | addend -= lobit; | |
9179 | info->callbacks->einfo | |
9180 | (_("%P: %H: error: %s against `%s' not a multiple of %u\n"), | |
9181 | input_bfd, input_section, rel->r_offset, | |
9182 | howto->name, sym_name, mask + 1); | |
9183 | bfd_set_error (bfd_error_bad_value); | |
9184 | ret = FALSE; | |
9185 | } | |
9186 | addend += insn & mask; | |
9187 | } | |
9188 | break; | |
252b5132 RH |
9189 | } |
9190 | ||
252b5132 | 9191 | #ifdef DEBUG |
55fd94b0 AM |
9192 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
9193 | "offset = %ld, addend = %ld\n", | |
252b5132 | 9194 | howto->name, |
8da6118f | 9195 | (int) r_type, |
252b5132 RH |
9196 | sym_name, |
9197 | r_symndx, | |
7619e7c7 | 9198 | (long) rel->r_offset, |
8da6118f | 9199 | (long) addend); |
252b5132 RH |
9200 | #endif |
9201 | ||
7619e7c7 AM |
9202 | if (unresolved_reloc |
9203 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
9204 | && h->def_dynamic) |
9205 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
9206 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 9207 | { |
25f53a85 | 9208 | info->callbacks->einfo |
8de848d8 | 9209 | (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 9210 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9211 | howto->name, |
7619e7c7 AM |
9212 | sym_name); |
9213 | ret = FALSE; | |
9214 | } | |
9215 | ||
86c95733 AM |
9216 | /* 16-bit fields in insns mostly have signed values, but a |
9217 | few insns have 16-bit unsigned values. Really, we should | |
9218 | have different reloc types. */ | |
9219 | if (howto->complain_on_overflow != complain_overflow_dont | |
9220 | && howto->dst_mask == 0xffff | |
9221 | && (input_section->flags & SEC_CODE) != 0) | |
9222 | { | |
9223 | enum complain_overflow complain = complain_overflow_signed; | |
9224 | ||
9225 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9226 | { | |
9227 | unsigned int insn; | |
9228 | ||
9229 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
9230 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9231 | complain = complain_overflow_bitfield; | |
9232 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9233 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9234 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9235 | complain = complain_overflow_unsigned; |
9236 | } | |
9237 | if (howto->complain_on_overflow != complain) | |
9238 | { | |
9239 | alt_howto = *howto; | |
9240 | alt_howto.complain_on_overflow = complain; | |
9241 | howto = &alt_howto; | |
9242 | } | |
9243 | } | |
9244 | ||
9245 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9246 | rel->r_offset, relocation, addend); | |
252b5132 | 9247 | |
7619e7c7 | 9248 | if (r != bfd_reloc_ok) |
252b5132 | 9249 | { |
7619e7c7 | 9250 | if (r == bfd_reloc_overflow) |
252b5132 | 9251 | { |
c3301df1 | 9252 | overflow: |
7619e7c7 AM |
9253 | if (warned) |
9254 | continue; | |
9255 | if (h != NULL | |
9256 | && h->root.type == bfd_link_hash_undefweak | |
dc1bc0c9 RH |
9257 | && howto->pc_relative) |
9258 | { | |
9259 | /* Assume this is a call protected by other code that | |
9260 | detect the symbol is undefined. If this is the case, | |
9261 | we can safely ignore the overflow. If not, the | |
9262 | program is hosed anyway, and a little warning isn't | |
9263 | going to help. */ | |
252b5132 | 9264 | |
dc1bc0c9 RH |
9265 | continue; |
9266 | } | |
252b5132 | 9267 | |
7619e7c7 | 9268 | if (! (*info->callbacks->reloc_overflow) (info, |
dfeffb9f | 9269 | (h ? &h->root : NULL), |
7619e7c7 AM |
9270 | sym_name, |
9271 | howto->name, | |
9272 | rel->r_addend, | |
9273 | input_bfd, | |
9274 | input_section, | |
9275 | rel->r_offset)) | |
9276 | return FALSE; | |
dc1bc0c9 RH |
9277 | } |
9278 | else | |
9279 | { | |
25f53a85 | 9280 | info->callbacks->einfo |
8de848d8 | 9281 | (_("%P: %H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9282 | input_bfd, input_section, rel->r_offset, |
9283 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9284 | ret = FALSE; |
252b5132 RH |
9285 | } |
9286 | } | |
9287 | } | |
9288 | ||
252b5132 RH |
9289 | #ifdef DEBUG |
9290 | fprintf (stderr, "\n"); | |
9291 | #endif | |
9292 | ||
53291d1f AM |
9293 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9294 | && input_section->size != input_section->rawsize | |
9295 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9296 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9297 | { | |
9298 | /* Branch around the trampolines. */ | |
9299 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9300 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9301 | } | |
9302 | ||
5446cbdf | 9303 | if (htab->params->ppc476_workaround |
795bc6b3 AM |
9304 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9305 | && (!info->relocatable | |
9306 | || (input_section->output_section->alignment_power | |
9307 | >= htab->params->pagesize_p2))) | |
5446cbdf AM |
9308 | { |
9309 | struct ppc_elf_relax_info *relax_info; | |
9310 | bfd_vma start_addr, end_addr, addr; | |
795bc6b3 | 9311 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
9312 | |
9313 | relax_info = elf_section_data (input_section)->sec_info; | |
9314 | if (relax_info->workaround_size != 0) | |
40fd06d1 AM |
9315 | { |
9316 | bfd_byte *p; | |
9317 | unsigned int n; | |
9318 | bfd_byte fill[4]; | |
9319 | ||
9320 | bfd_put_32 (input_bfd, BA, fill); | |
9321 | p = contents + input_section->size - relax_info->workaround_size; | |
9322 | n = relax_info->workaround_size >> 2; | |
9323 | while (n--) | |
9324 | { | |
9325 | memcpy (p, fill, 4); | |
9326 | p += 4; | |
9327 | } | |
9328 | } | |
5446cbdf AM |
9329 | |
9330 | /* The idea is: Replace the last instruction on a page with a | |
9331 | branch to a patch area. Put the insn there followed by a | |
9332 | branch back to the next page. Complicated a little by | |
9333 | needing to handle moved conditional branches, and by not | |
9334 | wanting to touch data-in-text. */ | |
9335 | ||
9336 | start_addr = (input_section->output_section->vma | |
9337 | + input_section->output_offset); | |
9338 | end_addr = (start_addr + input_section->size | |
9339 | - relax_info->workaround_size); | |
9340 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9341 | addr < end_addr; | |
9342 | addr += pagesize) | |
9343 | { | |
9344 | bfd_vma offset = addr - start_addr; | |
9345 | Elf_Internal_Rela *lo, *hi; | |
9346 | bfd_boolean is_data; | |
9347 | bfd_vma patch_off, patch_addr; | |
9348 | unsigned int insn; | |
9349 | ||
9350 | /* Do we have a data reloc at this offset? If so, leave | |
9351 | the word alone. */ | |
9352 | is_data = FALSE; | |
9353 | lo = relocs; | |
668e22e5 AM |
9354 | hi = relend; |
9355 | rel = NULL; | |
5446cbdf AM |
9356 | while (lo < hi) |
9357 | { | |
9358 | rel = lo + (hi - lo) / 2; | |
9359 | if (rel->r_offset < offset) | |
9360 | lo = rel + 1; | |
668e22e5 | 9361 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9362 | hi = rel; |
9363 | else | |
9364 | { | |
9365 | switch (ELF32_R_TYPE (rel->r_info)) | |
9366 | { | |
9367 | case R_PPC_ADDR32: | |
9368 | case R_PPC_UADDR32: | |
9369 | case R_PPC_REL32: | |
9370 | case R_PPC_ADDR30: | |
9371 | is_data = TRUE; | |
9372 | break; | |
9373 | default: | |
9374 | break; | |
9375 | } | |
9376 | break; | |
9377 | } | |
9378 | } | |
9379 | if (is_data) | |
9380 | continue; | |
9381 | ||
b4ab4364 AM |
9382 | /* Some instructions can be left alone too. Unconditional |
9383 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9384 | avoid the icache failure. | |
9385 | ||
9386 | The problem occurs due to prefetch across a page boundary | |
9387 | where stale instructions can be fetched from the next | |
9388 | page, and the mechanism for flushing these bad | |
9389 | instructions fails under certain circumstances. The | |
9390 | unconditional branches: | |
9391 | 1) Branch: b, bl, ba, bla, | |
9392 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9393 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9394 | where (2) and (3) have BO=0x14 making them unconditional, | |
9395 | prevent the bad prefetch because the prefetch itself is | |
9396 | affected by these instructions. This happens even if the | |
9397 | instruction is not executed. | |
9398 | ||
9399 | A bctr example: | |
9400 | . | |
9401 | . lis 9,new_page@ha | |
9402 | . addi 9,9,new_page@l | |
9403 | . mtctr 9 | |
9404 | . bctr | |
9405 | . nop | |
9406 | . nop | |
9407 | . new_page: | |
9408 | . | |
9409 | The bctr is not predicted taken due to ctr not being | |
9410 | ready, so prefetch continues on past the bctr into the | |
9411 | new page which might have stale instructions. If they | |
9412 | fail to be flushed, then they will be executed after the | |
9413 | bctr executes. Either of the following modifications | |
9414 | prevent the bad prefetch from happening in the first | |
9415 | place: | |
9416 | . | |
9417 | . lis 9,new_page@ha lis 9,new_page@ha | |
9418 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9419 | . mtctr 9 mtctr 9 | |
9420 | . bctr bctr | |
9421 | . nop b somewhere_else | |
9422 | . b somewhere_else nop | |
9423 | . new_page: new_page: | |
9424 | . */ | |
5446cbdf | 9425 | insn = bfd_get_32 (input_bfd, contents + offset); |
b4ab4364 AM |
9426 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9427 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
9428 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 9429 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 AM |
9430 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
9431 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ | |
5446cbdf AM |
9432 | continue; |
9433 | ||
9434 | patch_addr = (start_addr + input_section->size | |
9435 | - relax_info->workaround_size); | |
9436 | patch_addr = (patch_addr + 15) & -16; | |
9437 | patch_off = patch_addr - start_addr; | |
9438 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9439 | |
9440 | if (rel != NULL | |
9441 | && rel->r_offset >= offset | |
9442 | && rel->r_offset < offset + 4) | |
9443 | { | |
9444 | /* If the insn we are patching had a reloc, adjust the | |
9445 | reloc r_offset so that the reloc applies to the moved | |
9446 | location. This matters for -r and --emit-relocs. */ | |
9447 | if (rel + 1 != relend) | |
9448 | { | |
9449 | Elf_Internal_Rela tmp = *rel; | |
9450 | ||
9451 | /* Keep the relocs sorted by r_offset. */ | |
9452 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9453 | relend[-1] = tmp; | |
9454 | } | |
9455 | relend[-1].r_offset += patch_off - offset; | |
9456 | } | |
9457 | else | |
9458 | rel = NULL; | |
9459 | ||
5446cbdf AM |
9460 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
9461 | && (insn & 2) == 0 /* relative */) | |
9462 | { | |
9463 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9464 | ||
9465 | delta += offset - patch_off; | |
668e22e5 AM |
9466 | if (info->relocatable && rel != NULL) |
9467 | delta = 0; | |
9468 | if (!info->relocatable && rel != NULL) | |
9469 | { | |
9470 | enum elf_ppc_reloc_type r_type; | |
9471 | ||
9472 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9473 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9474 | insn |= BRANCH_PREDICT_BIT; | |
9475 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9476 | insn &= ~BRANCH_PREDICT_BIT; | |
9477 | else | |
9478 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9479 | ||
9480 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9481 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9482 | && delta + 0x8000 < 0x10000 | |
9483 | && (bfd_signed_vma) delta < 0) | |
9484 | insn ^= BRANCH_PREDICT_BIT; | |
9485 | } | |
5446cbdf AM |
9486 | if (delta + 0x8000 < 0x10000) |
9487 | { | |
9488 | bfd_put_32 (input_bfd, | |
9489 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9490 | contents + patch_off); | |
9491 | patch_off += 4; | |
9492 | bfd_put_32 (input_bfd, | |
9493 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9494 | contents + patch_off); | |
9495 | patch_off += 4; | |
9496 | } | |
9497 | else | |
9498 | { | |
668e22e5 AM |
9499 | if (rel != NULL) |
9500 | { | |
9501 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9502 | ||
9503 | relend[-1].r_offset += 8; | |
9504 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9505 | } | |
5446cbdf AM |
9506 | bfd_put_32 (input_bfd, |
9507 | (insn & ~0xfffc) | 8, | |
9508 | contents + patch_off); | |
9509 | patch_off += 4; | |
9510 | bfd_put_32 (input_bfd, | |
9511 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9512 | contents + patch_off); | |
9513 | patch_off += 4; | |
9514 | bfd_put_32 (input_bfd, | |
9515 | B | ((delta - 8) & 0x3fffffc), | |
9516 | contents + patch_off); | |
9517 | patch_off += 4; | |
9518 | } | |
9519 | } | |
9520 | else | |
9521 | { | |
9522 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9523 | patch_off += 4; | |
9524 | bfd_put_32 (input_bfd, | |
9525 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9526 | contents + patch_off); | |
9527 | patch_off += 4; | |
9528 | } | |
9529 | BFD_ASSERT (patch_off <= input_section->size); | |
9530 | relax_info->workaround_size = input_section->size - patch_off; | |
9531 | } | |
9532 | } | |
9533 | ||
252b5132 RH |
9534 | return ret; |
9535 | } | |
252b5132 | 9536 | \f |
25dbc73a AM |
9537 | /* Finish up dynamic symbol handling. We set the contents of various |
9538 | dynamic sections here. */ | |
c5fccbec | 9539 | |
b34976b6 | 9540 | static bfd_boolean |
25dbc73a AM |
9541 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, |
9542 | struct bfd_link_info *info, | |
9543 | struct elf_link_hash_entry *h, | |
9544 | Elf_Internal_Sym *sym) | |
e1a9cb8e | 9545 | { |
25dbc73a | 9546 | struct ppc_elf_link_hash_table *htab; |
a6aa5195 AM |
9547 | struct plt_entry *ent; |
9548 | bfd_boolean doneone; | |
e1a9cb8e | 9549 | |
25dbc73a AM |
9550 | #ifdef DEBUG |
9551 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9552 | h->root.root.string); | |
9553 | #endif | |
e1a9cb8e | 9554 | |
25dbc73a AM |
9555 | htab = ppc_elf_hash_table (info); |
9556 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
e1a9cb8e | 9557 | |
a6aa5195 AM |
9558 | doneone = FALSE; |
9559 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9560 | if (ent->plt.offset != (bfd_vma) -1) | |
9561 | { | |
9562 | if (!doneone) | |
9563 | { | |
9564 | Elf_Internal_Rela rela; | |
9565 | bfd_byte *loc; | |
9566 | bfd_vma reloc_index; | |
e1a9cb8e | 9567 | |
e054468f | 9568 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9569 | || !htab->elf.dynamic_sections_created |
9570 | || h->dynindx == -1) | |
9d8504b1 PB |
9571 | reloc_index = ent->plt.offset / 4; |
9572 | else | |
9573 | { | |
9574 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
9575 | / htab->plt_slot_size); | |
9576 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 9577 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
9578 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
9579 | } | |
9580 | ||
a6aa5195 AM |
9581 | /* This symbol has an entry in the procedure linkage table. |
9582 | Set it up. */ | |
e054468f | 9583 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
9584 | && htab->elf.dynamic_sections_created |
9585 | && h->dynindx != -1) | |
a6aa5195 | 9586 | { |
9d8504b1 PB |
9587 | bfd_vma got_offset; |
9588 | const bfd_vma *plt_entry; | |
5b914448 | 9589 | |
9d8504b1 PB |
9590 | /* The first three entries in .got.plt are reserved. */ |
9591 | got_offset = (reloc_index + 3) * 4; | |
9592 | ||
9593 | /* Use the right PLT. */ | |
9594 | plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry | |
9595 | : ppc_elf_vxworks_plt_entry; | |
9596 | ||
9597 | /* Fill in the .plt on VxWorks. */ | |
9598 | if (info->shared) | |
9599 | { | |
9d8504b1 | 9600 | bfd_put_32 (output_bfd, |
e87d4038 | 9601 | plt_entry[0] | PPC_HA (got_offset), |
9d8504b1 PB |
9602 | htab->plt->contents + ent->plt.offset + 0); |
9603 | bfd_put_32 (output_bfd, | |
e87d4038 | 9604 | plt_entry[1] | PPC_LO (got_offset), |
9d8504b1 PB |
9605 | htab->plt->contents + ent->plt.offset + 4); |
9606 | } | |
9607 | else | |
9608 | { | |
e87d4038 | 9609 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 PB |
9610 | |
9611 | bfd_put_32 (output_bfd, | |
e87d4038 | 9612 | plt_entry[0] | PPC_HA (got_loc), |
9d8504b1 PB |
9613 | htab->plt->contents + ent->plt.offset + 0); |
9614 | bfd_put_32 (output_bfd, | |
e87d4038 | 9615 | plt_entry[1] | PPC_LO (got_loc), |
9d8504b1 PB |
9616 | htab->plt->contents + ent->plt.offset + 4); |
9617 | } | |
9618 | ||
9619 | bfd_put_32 (output_bfd, plt_entry[2], | |
9620 | htab->plt->contents + ent->plt.offset + 8); | |
9621 | bfd_put_32 (output_bfd, plt_entry[3], | |
9622 | htab->plt->contents + ent->plt.offset + 12); | |
9623 | ||
9624 | /* This instruction is an immediate load. The value loaded is | |
9625 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
9626 | start of the .rela.plt section. The value is stored in the | |
9627 | low-order 16 bits of the load instruction. */ | |
9628 | /* NOTE: It appears that this is now an index rather than a | |
9629 | prescaled offset. */ | |
5b914448 | 9630 | bfd_put_32 (output_bfd, |
9d8504b1 PB |
9631 | plt_entry[4] | reloc_index, |
9632 | htab->plt->contents + ent->plt.offset + 16); | |
9633 | /* This instruction is a PC-relative branch whose target is | |
9634 | the start of the PLT section. The address of this branch | |
9635 | instruction is 20 bytes beyond the start of this PLT entry. | |
9636 | The address is encoded in bits 6-29, inclusive. The value | |
9637 | stored is right-shifted by two bits, permitting a 26-bit | |
9638 | offset. */ | |
5b914448 AM |
9639 | bfd_put_32 (output_bfd, |
9640 | (plt_entry[5] | |
9d8504b1 PB |
9641 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
9642 | htab->plt->contents + ent->plt.offset + 20); | |
9643 | bfd_put_32 (output_bfd, plt_entry[6], | |
9644 | htab->plt->contents + ent->plt.offset + 24); | |
9645 | bfd_put_32 (output_bfd, plt_entry[7], | |
9646 | htab->plt->contents + ent->plt.offset + 28); | |
9647 | ||
9648 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 9649 | the address immediately after the "bctr" instruction |
9d8504b1 PB |
9650 | in this PLT entry. */ |
9651 | bfd_put_32 (output_bfd, (htab->plt->output_section->vma | |
9652 | + htab->plt->output_offset | |
9653 | + ent->plt.offset + 16), | |
9654 | htab->sgotplt->contents + got_offset); | |
9655 | ||
9656 | if (!info->shared) | |
9657 | { | |
9658 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
9659 | loc = htab->srelplt2->contents | |
9660 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
9661 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
9662 | * sizeof (Elf32_External_Rela)); | |
9663 | ||
9664 | /* Provide the @ha relocation for the first instruction. */ | |
9665 | rela.r_offset = (htab->plt->output_section->vma | |
9666 | + htab->plt->output_offset | |
9667 | + ent->plt.offset + 2); | |
636ce3f5 | 9668 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9669 | R_PPC_ADDR16_HA); |
9670 | rela.r_addend = got_offset; | |
9671 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9672 | loc += sizeof (Elf32_External_Rela); | |
9673 | ||
9674 | /* Provide the @l relocation for the second instruction. */ | |
9675 | rela.r_offset = (htab->plt->output_section->vma | |
9676 | + htab->plt->output_offset | |
9677 | + ent->plt.offset + 6); | |
636ce3f5 | 9678 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9679 | R_PPC_ADDR16_LO); |
9680 | rela.r_addend = got_offset; | |
9681 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9682 | loc += sizeof (Elf32_External_Rela); | |
9683 | ||
9684 | /* Provide a relocation for the GOT entry corresponding to this | |
9685 | PLT slot. Point it at the middle of the .plt entry. */ | |
9686 | rela.r_offset = (htab->sgotplt->output_section->vma | |
9687 | + htab->sgotplt->output_offset | |
9688 | + got_offset); | |
7325306f | 9689 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
9690 | R_PPC_ADDR32); |
9691 | rela.r_addend = ent->plt.offset + 16; | |
9692 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9693 | } | |
9694 | ||
9695 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
9696 | In particular, the offset for the relocation is not the | |
9697 | address of the PLT entry for this function, as specified | |
9698 | by the ABI. Instead, the offset is set to the address of | |
9699 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
9700 | rela.r_offset = (htab->sgotplt->output_section->vma | |
9701 | + htab->sgotplt->output_offset | |
9702 | + got_offset); | |
9703 | ||
a6aa5195 AM |
9704 | } |
9705 | else | |
9706 | { | |
e054468f | 9707 | asection *splt = htab->plt; |
25f23106 AM |
9708 | if (!htab->elf.dynamic_sections_created |
9709 | || h->dynindx == -1) | |
e054468f AM |
9710 | splt = htab->iplt; |
9711 | ||
9712 | rela.r_offset = (splt->output_section->vma | |
9713 | + splt->output_offset | |
9d8504b1 | 9714 | + ent->plt.offset); |
e054468f | 9715 | if (htab->plt_type == PLT_OLD |
25f23106 AM |
9716 | || !htab->elf.dynamic_sections_created |
9717 | || h->dynindx == -1) | |
9d8504b1 PB |
9718 | { |
9719 | /* We don't need to fill in the .plt. The ppc dynamic | |
9720 | linker will fill it in. */ | |
9721 | } | |
9722 | else | |
9723 | { | |
9724 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
9725 | + htab->glink->output_section->vma | |
9726 | + htab->glink->output_offset); | |
9727 | bfd_put_32 (output_bfd, val, | |
e054468f | 9728 | splt->contents + ent->plt.offset); |
9d8504b1 | 9729 | } |
a6aa5195 | 9730 | } |
e1a9cb8e | 9731 | |
a6aa5195 | 9732 | /* Fill in the entry in the .rela.plt section. */ |
a6aa5195 | 9733 | rela.r_addend = 0; |
e054468f AM |
9734 | if (!htab->elf.dynamic_sections_created |
9735 | || h->dynindx == -1) | |
9736 | { | |
9737 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
9738 | && h->def_regular | |
9739 | && (h->root.type == bfd_link_hash_defined | |
9740 | || h->root.type == bfd_link_hash_defweak)); | |
9741 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9742 | rela.r_addend = SYM_VAL (h); | |
9743 | } | |
9744 | else | |
9745 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
e1a9cb8e | 9746 | |
25f23106 AM |
9747 | if (!htab->elf.dynamic_sections_created |
9748 | || h->dynindx == -1) | |
9749 | loc = (htab->reliplt->contents | |
9750 | + (htab->reliplt->reloc_count++ | |
9751 | * sizeof (Elf32_External_Rela))); | |
e054468f | 9752 | else |
25f23106 AM |
9753 | loc = (htab->relplt->contents |
9754 | + reloc_index * sizeof (Elf32_External_Rela)); | |
a6aa5195 | 9755 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
e1a9cb8e | 9756 | |
a6aa5195 AM |
9757 | if (!h->def_regular) |
9758 | { | |
0eb4a168 AM |
9759 | /* Mark the symbol as undefined, rather than as |
9760 | defined in the .plt section. Leave the value if | |
9761 | there were any relocations where pointer equality | |
9762 | matters (this is a clue for the dynamic linker, to | |
9763 | make function pointer comparisons work between an | |
9764 | application and shared library), otherwise set it | |
9765 | to zero. */ | |
a6aa5195 | 9766 | sym->st_shndx = SHN_UNDEF; |
0eb4a168 | 9767 | if (!h->pointer_equality_needed) |
a6aa5195 | 9768 | sym->st_value = 0; |
0eb4a168 AM |
9769 | else if (!h->ref_regular_nonweak) |
9770 | { | |
625af618 AM |
9771 | /* This breaks function pointer comparisons, but |
9772 | that is better than breaking tests for a NULL | |
0eb4a168 | 9773 | function pointer. */ |
0eb4a168 AM |
9774 | sym->st_value = 0; |
9775 | } | |
a6aa5195 | 9776 | } |
de972ffa AM |
9777 | else if (h->type == STT_GNU_IFUNC |
9778 | && !info->shared) | |
9779 | { | |
9780 | /* Set the value of ifunc symbols in a non-pie | |
9781 | executable to the glink entry. This is to avoid | |
9782 | text relocations. We can't do this for ifunc in | |
9783 | allocate_dynrelocs, as we do for normal dynamic | |
9784 | function symbols with plt entries, because we need | |
9785 | to keep the original value around for the ifunc | |
9786 | relocation. */ | |
9787 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
9788 | (output_bfd, htab->glink->output_section)); | |
5b914448 AM |
9789 | sym->st_value = (ent->glink_offset |
9790 | + htab->glink->output_offset | |
de972ffa AM |
9791 | + htab->glink->output_section->vma); |
9792 | } | |
a6aa5195 AM |
9793 | doneone = TRUE; |
9794 | } | |
e1a9cb8e | 9795 | |
e054468f | 9796 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9797 | || !htab->elf.dynamic_sections_created |
9798 | || h->dynindx == -1) | |
a6aa5195 | 9799 | { |
a7f2871e | 9800 | unsigned char *p; |
e054468f | 9801 | asection *splt = htab->plt; |
25f23106 AM |
9802 | if (!htab->elf.dynamic_sections_created |
9803 | || h->dynindx == -1) | |
e054468f | 9804 | splt = htab->iplt; |
e1a9cb8e | 9805 | |
a7f2871e AM |
9806 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
9807 | ||
5446cbdf | 9808 | if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
9809 | { |
9810 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
9811 | p += 4; | |
9812 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
9813 | p += 4; | |
9814 | bfd_put_32 (output_bfd, MR_0_3, p); | |
9815 | p += 4; | |
9816 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
9817 | p += 4; | |
9818 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
9819 | p += 4; | |
9820 | bfd_put_32 (output_bfd, BEQLR, p); | |
9821 | p += 4; | |
9822 | bfd_put_32 (output_bfd, MR_3_0, p); | |
9823 | p += 4; | |
9824 | bfd_put_32 (output_bfd, NOP, p); | |
9825 | p += 4; | |
9826 | } | |
9827 | ||
9828 | write_glink_stub (ent, splt, p, info); | |
e1a9cb8e | 9829 | |
a877a2b6 | 9830 | if (!info->shared) |
e054468f AM |
9831 | /* We only need one non-PIC glink stub. */ |
9832 | break; | |
a6aa5195 AM |
9833 | } |
9834 | else | |
9835 | break; | |
9836 | } | |
e1a9cb8e | 9837 | |
25dbc73a AM |
9838 | if (h->needs_copy) |
9839 | { | |
9840 | asection *s; | |
9841 | Elf_Internal_Rela rela; | |
9842 | bfd_byte *loc; | |
e1a9cb8e | 9843 | |
25dbc73a | 9844 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 9845 | |
25dbc73a AM |
9846 | #ifdef DEBUG |
9847 | fprintf (stderr, ", copy"); | |
9848 | #endif | |
e1a9cb8e | 9849 | |
25dbc73a | 9850 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 9851 | |
4dc4a9a5 | 9852 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a AM |
9853 | s = htab->relsbss; |
9854 | else | |
9855 | s = htab->relbss; | |
9856 | BFD_ASSERT (s != NULL); | |
e1a9cb8e | 9857 | |
e87d4038 | 9858 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
9859 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
9860 | rela.r_addend = 0; | |
9861 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
9862 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9863 | } | |
e1a9cb8e | 9864 | |
25dbc73a AM |
9865 | #ifdef DEBUG |
9866 | fprintf (stderr, "\n"); | |
9867 | #endif | |
e1a9cb8e | 9868 | |
25dbc73a AM |
9869 | return TRUE; |
9870 | } | |
9871 | \f | |
9872 | static enum elf_reloc_type_class | |
7e612e98 AM |
9873 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
9874 | const asection *rel_sec, | |
9875 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 9876 | { |
7e612e98 AM |
9877 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
9878 | ||
9879 | if (rel_sec == htab->reliplt) | |
9880 | return reloc_class_ifunc; | |
9881 | ||
25dbc73a AM |
9882 | switch (ELF32_R_TYPE (rela->r_info)) |
9883 | { | |
9884 | case R_PPC_RELATIVE: | |
9885 | return reloc_class_relative; | |
25dbc73a AM |
9886 | case R_PPC_JMP_SLOT: |
9887 | return reloc_class_plt; | |
9888 | case R_PPC_COPY: | |
9889 | return reloc_class_copy; | |
9890 | default: | |
9891 | return reloc_class_normal; | |
9892 | } | |
e1a9cb8e | 9893 | } |
25dbc73a AM |
9894 | \f |
9895 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 9896 | |
25dbc73a AM |
9897 | static bfd_boolean |
9898 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
9899 | struct bfd_link_info *info) | |
e1a9cb8e | 9900 | { |
25dbc73a | 9901 | asection *sdyn; |
9d8504b1 | 9902 | asection *splt; |
25dbc73a | 9903 | struct ppc_elf_link_hash_table *htab; |
1fe44d79 | 9904 | bfd_vma got; |
e87d4038 AM |
9905 | bfd *dynobj; |
9906 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 9907 | |
25dbc73a AM |
9908 | #ifdef DEBUG |
9909 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
9910 | #endif | |
6b0817e5 | 9911 | |
25dbc73a | 9912 | htab = ppc_elf_hash_table (info); |
9d8504b1 | 9913 | dynobj = elf_hash_table (info)->dynobj; |
3d4d4302 | 9914 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
9d8504b1 | 9915 | if (htab->is_vxworks) |
3d4d4302 | 9916 | splt = bfd_get_linker_section (dynobj, ".plt"); |
9d8504b1 PB |
9917 | else |
9918 | splt = NULL; | |
e1a9cb8e | 9919 | |
1fe44d79 AM |
9920 | got = 0; |
9921 | if (htab->elf.hgot != NULL) | |
e87d4038 | 9922 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 9923 | |
25dbc73a | 9924 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 9925 | { |
25dbc73a | 9926 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 9927 | |
25dbc73a | 9928 | BFD_ASSERT (htab->plt != NULL && sdyn != NULL); |
86bbe32f | 9929 | |
25dbc73a AM |
9930 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
9931 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
9932 | for (; dyncon < dynconend; dyncon++) | |
9933 | { | |
9934 | Elf_Internal_Dyn dyn; | |
9935 | asection *s; | |
e1a9cb8e | 9936 | |
9d8504b1 | 9937 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 9938 | |
25dbc73a AM |
9939 | switch (dyn.d_tag) |
9940 | { | |
9941 | case DT_PLTGOT: | |
9d8504b1 PB |
9942 | if (htab->is_vxworks) |
9943 | s = htab->sgotplt; | |
9944 | else | |
9945 | s = htab->plt; | |
25dbc73a AM |
9946 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
9947 | break; | |
86bbe32f | 9948 | |
25dbc73a AM |
9949 | case DT_PLTRELSZ: |
9950 | dyn.d_un.d_val = htab->relplt->size; | |
9951 | break; | |
e1a9cb8e | 9952 | |
25dbc73a AM |
9953 | case DT_JMPREL: |
9954 | s = htab->relplt; | |
9955 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
9956 | break; | |
2f89ff8d | 9957 | |
1fe44d79 AM |
9958 | case DT_PPC_GOT: |
9959 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
9960 | break; |
9961 | ||
9d8504b1 PB |
9962 | case DT_RELASZ: |
9963 | if (htab->is_vxworks) | |
9964 | { | |
9965 | if (htab->relplt) | |
9966 | dyn.d_un.d_ptr -= htab->relplt->size; | |
9967 | break; | |
9968 | } | |
9969 | continue; | |
9970 | ||
25dbc73a | 9971 | default: |
7a2b07ff NS |
9972 | if (htab->is_vxworks |
9973 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
9974 | break; | |
25dbc73a AM |
9975 | continue; |
9976 | } | |
4c45e5c9 | 9977 | |
25dbc73a AM |
9978 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
9979 | } | |
9980 | } | |
4c45e5c9 | 9981 | |
3b36f7e6 | 9982 | if (htab->got != NULL) |
25dbc73a | 9983 | { |
e79f5955 AM |
9984 | if (htab->elf.hgot->root.u.def.section == htab->got |
9985 | || htab->elf.hgot->root.u.def.section == htab->sgotplt) | |
e87d4038 | 9986 | { |
e79f5955 | 9987 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 9988 | |
e87d4038 AM |
9989 | p += htab->elf.hgot->root.u.def.value; |
9990 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
9991 | { |
9992 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
9993 | so that a function can easily find the address of | |
9994 | _GLOBAL_OFFSET_TABLE_. */ | |
9995 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
9996 | < htab->elf.hgot->root.u.def.section->size); | |
9997 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
9998 | } | |
3b36f7e6 | 9999 | |
e87d4038 | 10000 | if (sdyn != NULL) |
e79f5955 AM |
10001 | { |
10002 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
10003 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
10004 | < htab->elf.hgot->root.u.def.section->size); | |
10005 | bfd_put_32 (output_bfd, val, p); | |
10006 | } | |
e87d4038 AM |
10007 | } |
10008 | else | |
10009 | { | |
8de848d8 | 10010 | info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"), |
25f53a85 AM |
10011 | htab->elf.hgot->root.root.string, |
10012 | (htab->sgotplt != NULL | |
10013 | ? htab->sgotplt->name : htab->got->name)); | |
e87d4038 AM |
10014 | bfd_set_error (bfd_error_bad_value); |
10015 | ret = FALSE; | |
10016 | } | |
25dbc73a AM |
10017 | |
10018 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; | |
10019 | } | |
10020 | ||
9d8504b1 PB |
10021 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
10022 | if (splt && splt->size > 0) | |
10023 | { | |
10024 | /* Use the right PLT. */ | |
5b914448 AM |
10025 | const bfd_vma *plt_entry = (info->shared |
10026 | ? ppc_elf_vxworks_pic_plt0_entry | |
10027 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 PB |
10028 | |
10029 | if (!info->shared) | |
10030 | { | |
e87d4038 | 10031 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10032 | |
e87d4038 | 10033 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10034 | splt->contents + 0); |
e87d4038 | 10035 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10036 | splt->contents + 4); |
10037 | } | |
10038 | else | |
10039 | { | |
10040 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10041 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10042 | } | |
10043 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10044 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10045 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10046 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10047 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10048 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10049 | ||
10050 | if (! info->shared) | |
10051 | { | |
10052 | Elf_Internal_Rela rela; | |
10053 | bfd_byte *loc; | |
10054 | ||
10055 | loc = htab->srelplt2->contents; | |
10056 | ||
10057 | /* Output the @ha relocation for the first instruction. */ | |
10058 | rela.r_offset = (htab->plt->output_section->vma | |
10059 | + htab->plt->output_offset | |
10060 | + 2); | |
636ce3f5 | 10061 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10062 | rela.r_addend = 0; |
10063 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10064 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10065 | |
9d8504b1 PB |
10066 | /* Output the @l relocation for the second instruction. */ |
10067 | rela.r_offset = (htab->plt->output_section->vma | |
10068 | + htab->plt->output_offset | |
10069 | + 6); | |
636ce3f5 | 10070 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10071 | rela.r_addend = 0; |
10072 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10073 | loc += sizeof (Elf32_External_Rela); | |
10074 | ||
10075 | /* Fix up the remaining relocations. They may have the wrong | |
10076 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10077 | in which symbols were output. */ | |
10078 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10079 | { | |
10080 | Elf_Internal_Rela rel; | |
10081 | ||
10082 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10083 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10084 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10085 | loc += sizeof (Elf32_External_Rela); | |
10086 | ||
10087 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10088 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10089 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10090 | loc += sizeof (Elf32_External_Rela); | |
10091 | ||
10092 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10093 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10094 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10095 | loc += sizeof (Elf32_External_Rela); | |
10096 | } | |
10097 | } | |
10098 | } | |
10099 | ||
e054468f AM |
10100 | if (htab->glink != NULL |
10101 | && htab->glink->contents != NULL | |
10102 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10103 | { |
10104 | unsigned char *p; | |
10105 | unsigned char *endp; | |
a6aa5195 | 10106 | bfd_vma res0; |
d7128ce4 | 10107 | unsigned int i; |
a6aa5195 AM |
10108 | |
10109 | /* | |
10110 | * PIC glink code is the following: | |
10111 | * | |
10112 | * # ith PLT code stub. | |
10113 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10114 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10115 | * mtctr 11 | |
10116 | * bctr | |
10117 | * | |
10118 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10119 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10120 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10121 | * res_0: b PLTresolve | |
10122 | * res_1: b PLTresolve | |
10123 | * . | |
10124 | * # Some number of entries towards the end can be nops | |
10125 | * res_n_m3: nop | |
10126 | * res_n_m2: nop | |
10127 | * res_n_m1: | |
10128 | * | |
10129 | * PLTresolve: | |
10130 | * addis 11,11,(1f-res_0)@ha | |
10131 | * mflr 0 | |
10132 | * bcl 20,31,1f | |
10133 | * 1: addi 11,11,(1b-res_0)@l | |
10134 | * mflr 12 | |
10135 | * mtlr 0 | |
10136 | * sub 11,11,12 # r11 = index * 4 | |
10137 | * addis 12,12,(got+4-1b)@ha | |
10138 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve | |
10139 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
10140 | * mtctr 0 | |
10141 | * add 0,11,11 | |
10142 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
10143 | * bctr | |
10144 | */ | |
10145 | static const unsigned int pic_plt_resolve[] = | |
10146 | { | |
10147 | ADDIS_11_11, | |
10148 | MFLR_0, | |
10149 | BCL_20_31, | |
10150 | ADDI_11_11, | |
10151 | MFLR_12, | |
10152 | MTLR_0, | |
10153 | SUB_11_11_12, | |
10154 | ADDIS_12_12, | |
10155 | LWZ_0_12, | |
10156 | LWZ_12_12, | |
10157 | MTCTR_0, | |
10158 | ADD_0_11_11, | |
10159 | ADD_11_0_11, | |
10160 | BCTR, | |
10161 | NOP, | |
10162 | NOP | |
10163 | }; | |
10164 | ||
176a0d42 AM |
10165 | /* |
10166 | * Non-PIC glink code is a little simpler. | |
10167 | * | |
10168 | * # ith PLT code stub. | |
10169 | * lis 11,(plt+(i-1)*4)@ha | |
10170 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10171 | * mtctr 11 | |
10172 | * bctr | |
10173 | * | |
10174 | * The branch table is the same, then comes | |
10175 | * | |
10176 | * PLTresolve: | |
10177 | * lis 12,(got+4)@ha | |
10178 | * addis 11,11,(-res_0)@ha | |
10179 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve | |
10180 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
10181 | * mtctr 0 | |
10182 | * add 0,11,11 | |
10183 | * lwz 12,(got+8)@l(12) # got[2] contains the map address | |
10184 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
10185 | * bctr | |
10186 | */ | |
d7128ce4 AM |
10187 | static const unsigned int plt_resolve[] = |
10188 | { | |
a6aa5195 AM |
10189 | LIS_12, |
10190 | ADDIS_11_11, | |
10191 | LWZ_0_12, | |
10192 | ADDI_11_11, | |
d7128ce4 | 10193 | MTCTR_0, |
7e8aeb9a | 10194 | ADD_0_11_11, |
a6aa5195 | 10195 | LWZ_12_12, |
7e8aeb9a | 10196 | ADD_11_0_11, |
d7128ce4 AM |
10197 | BCTR, |
10198 | NOP, | |
10199 | NOP, | |
a6aa5195 AM |
10200 | NOP, |
10201 | NOP, | |
10202 | NOP, | |
10203 | NOP, | |
d7128ce4 AM |
10204 | NOP |
10205 | }; | |
10206 | ||
a6aa5195 AM |
10207 | if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4) |
10208 | abort (); | |
10209 | if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4) | |
7e8aeb9a AM |
10210 | abort (); |
10211 | ||
a6aa5195 | 10212 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10213 | and perhaps some padding. */ |
a6aa5195 AM |
10214 | p = htab->glink->contents; |
10215 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10216 | endp = htab->glink->contents; |
10217 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10218 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10219 | { |
10220 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10221 | p += 4; | |
10222 | } | |
10223 | while (p < endp) | |
10224 | { | |
10225 | bfd_put_32 (output_bfd, NOP, p); | |
10226 | p += 4; | |
10227 | } | |
10228 | ||
7e8aeb9a | 10229 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10230 | + htab->glink->output_section->vma |
10231 | + htab->glink->output_offset); | |
10232 | ||
da3a2088 AM |
10233 | if (htab->params->ppc476_workaround) |
10234 | { | |
10235 | /* Ensure that a call stub at the end of a page doesn't | |
10236 | result in prefetch over the end of the page into the | |
10237 | glink branch table. */ | |
10238 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10239 | bfd_vma page_addr; | |
10240 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10241 | + htab->glink->output_offset); | |
10242 | ||
10243 | for (page_addr = res0 & -pagesize; | |
10244 | page_addr > glink_start; | |
10245 | page_addr -= pagesize) | |
10246 | { | |
10247 | /* We have a plt call stub that may need fixing. */ | |
10248 | bfd_byte *loc; | |
10249 | unsigned int insn; | |
10250 | ||
10251 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10252 | insn = bfd_get_32 (output_bfd, loc); | |
10253 | if (insn == BCTR) | |
10254 | { | |
10255 | /* By alignment, we know that there must be at least | |
10256 | one other call stub before this one. */ | |
10257 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10258 | if (insn == BCTR) | |
10259 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10260 | else | |
10261 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10262 | } | |
10263 | } | |
10264 | } | |
10265 | ||
86b9da88 | 10266 | /* Last comes the PLTresolve stub. */ |
a877a2b6 | 10267 | if (info->shared) |
7e8aeb9a | 10268 | { |
a6aa5195 | 10269 | bfd_vma bcl; |
d7128ce4 | 10270 | |
a6aa5195 | 10271 | for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++) |
7e8aeb9a | 10272 | { |
da3a2088 AM |
10273 | unsigned int insn = pic_plt_resolve[i]; |
10274 | ||
10275 | if (htab->params->ppc476_workaround && insn == NOP) | |
10276 | insn = BA + 0; | |
10277 | bfd_put_32 (output_bfd, insn, p); | |
7e8aeb9a AM |
10278 | p += 4; |
10279 | } | |
a6aa5195 AM |
10280 | p -= 4 * ARRAY_SIZE (pic_plt_resolve); |
10281 | ||
10282 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 | |
10283 | + htab->glink->output_section->vma | |
10284 | + htab->glink->output_offset); | |
10285 | ||
10286 | bfd_put_32 (output_bfd, | |
10287 | ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4); | |
10288 | bfd_put_32 (output_bfd, | |
10289 | ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4); | |
10290 | bfd_put_32 (output_bfd, | |
10291 | ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4); | |
10292 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) | |
10293 | { | |
10294 | bfd_put_32 (output_bfd, | |
10295 | LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
10296 | bfd_put_32 (output_bfd, | |
10297 | LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4); | |
10298 | } | |
10299 | else | |
10300 | { | |
10301 | bfd_put_32 (output_bfd, | |
10302 | LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4); | |
10303 | bfd_put_32 (output_bfd, | |
10304 | LWZ_12_12 + 4, p + 9*4); | |
10305 | } | |
7e8aeb9a AM |
10306 | } |
10307 | else | |
d7128ce4 | 10308 | { |
a6aa5195 | 10309 | for (i = 0; i < ARRAY_SIZE (plt_resolve); i++) |
7e8aeb9a | 10310 | { |
da3a2088 AM |
10311 | unsigned int insn = plt_resolve[i]; |
10312 | ||
10313 | if (htab->params->ppc476_workaround && insn == NOP) | |
10314 | insn = BA + 0; | |
10315 | bfd_put_32 (output_bfd, insn, p); | |
7e8aeb9a AM |
10316 | p += 4; |
10317 | } | |
a6aa5195 AM |
10318 | p -= 4 * ARRAY_SIZE (plt_resolve); |
10319 | ||
10320 | bfd_put_32 (output_bfd, | |
10321 | LIS_12 + PPC_HA (got + 4), p + 0*4); | |
10322 | bfd_put_32 (output_bfd, | |
10323 | ADDIS_11_11 + PPC_HA (-res0), p + 1*4); | |
10324 | bfd_put_32 (output_bfd, | |
10325 | ADDI_11_11 + PPC_LO (-res0), p + 3*4); | |
10326 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10327 | { | |
10328 | bfd_put_32 (output_bfd, | |
10329 | LWZ_0_12 + PPC_LO (got + 4), p + 2*4); | |
10330 | bfd_put_32 (output_bfd, | |
10331 | LWZ_12_12 + PPC_LO (got + 8), p + 6*4); | |
10332 | } | |
10333 | else | |
10334 | { | |
10335 | bfd_put_32 (output_bfd, | |
10336 | LWZU_0_12 + PPC_LO (got + 4), p + 2*4); | |
10337 | bfd_put_32 (output_bfd, | |
10338 | LWZ_12_12 + 4, p + 6*4); | |
10339 | } | |
d7128ce4 | 10340 | } |
d7128ce4 AM |
10341 | } |
10342 | ||
6177242a AM |
10343 | if (htab->glink_eh_frame != NULL |
10344 | && htab->glink_eh_frame->contents != NULL) | |
10345 | { | |
10346 | unsigned char *p = htab->glink_eh_frame->contents; | |
10347 | bfd_vma val; | |
10348 | ||
6177242a AM |
10349 | p += sizeof (glink_eh_frame_cie); |
10350 | /* FDE length. */ | |
6177242a AM |
10351 | p += 4; |
10352 | /* CIE pointer. */ | |
6177242a AM |
10353 | p += 4; |
10354 | /* Offset to .glink. */ | |
10355 | val = (htab->glink->output_section->vma | |
10356 | + htab->glink->output_offset); | |
10357 | val -= (htab->glink_eh_frame->output_section->vma | |
10358 | + htab->glink_eh_frame->output_offset); | |
10359 | val -= p - htab->glink_eh_frame->contents; | |
10360 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10361 | |
dbaa2011 | 10362 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10363 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10364 | htab->glink_eh_frame, | |
10365 | htab->glink_eh_frame->contents)) | |
10366 | return FALSE; | |
10367 | } | |
10368 | ||
e87d4038 | 10369 | return ret; |
25dbc73a | 10370 | } |
e1a9cb8e | 10371 | \f |
6d00b590 | 10372 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10373 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10374 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10375 | #define TARGET_BIG_NAME "elf32-powerpc" |
10376 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10377 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 | 10378 | #define ELF_MACHINE_CODE EM_PPC |
d0facd1b NC |
10379 | #ifdef __QNXTARGET__ |
10380 | #define ELF_MAXPAGESIZE 0x1000 | |
04c6a44c | 10381 | #define ELF_COMMONPAGESIZE 0x1000 |
d0facd1b | 10382 | #else |
252b5132 | 10383 | #define ELF_MAXPAGESIZE 0x10000 |
04c6a44c | 10384 | #define ELF_COMMONPAGESIZE 0x10000 |
d0facd1b | 10385 | #endif |
b1342370 | 10386 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 RH |
10387 | #define elf_info_to_howto ppc_elf_info_to_howto |
10388 | ||
10389 | #ifdef EM_CYGNUS_POWERPC | |
10390 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10391 | #endif | |
10392 | ||
10393 | #ifdef EM_PPC_OLD | |
10394 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10395 | #endif | |
10396 | ||
10397 | #define elf_backend_plt_not_loaded 1 | |
252b5132 | 10398 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10399 | #define elf_backend_can_refcount 1 |
b491616a | 10400 | #define elf_backend_rela_normal 1 |
53291d1f | 10401 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10402 | |
43c40ab2 | 10403 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10404 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10405 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10406 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10407 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10408 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10409 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10410 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10411 | |
feee612b | 10412 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 RH |
10413 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
10414 | #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook | |
10415 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr | |
10416 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10417 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10418 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
7fce784e | 10419 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10420 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10421 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10422 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10423 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10424 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10425 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10426 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10427 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
b9c361e0 | 10428 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10429 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10430 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10431 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10432 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10433 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10434 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10435 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10436 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10437 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10438 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10439 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10440 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
b9c361e0 | 10441 | #define elf_backend_section_processing ppc_elf_section_processing |
252b5132 RH |
10442 | |
10443 | #include "elf32-target.h" | |
9d8504b1 | 10444 | |
7b8e7dad AM |
10445 | /* FreeBSD Target */ |
10446 | ||
10447 | #undef TARGET_LITTLE_SYM | |
10448 | #undef TARGET_LITTLE_NAME | |
10449 | ||
10450 | #undef TARGET_BIG_SYM | |
6d00b590 | 10451 | #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec |
7b8e7dad AM |
10452 | #undef TARGET_BIG_NAME |
10453 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10454 | ||
10455 | #undef ELF_OSABI | |
10456 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10457 | ||
10458 | #undef elf32_bed | |
10459 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10460 | ||
10461 | #include "elf32-target.h" | |
10462 | ||
9d8504b1 PB |
10463 | /* VxWorks Target */ |
10464 | ||
10465 | #undef TARGET_LITTLE_SYM | |
10466 | #undef TARGET_LITTLE_NAME | |
10467 | ||
10468 | #undef TARGET_BIG_SYM | |
6d00b590 | 10469 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10470 | #undef TARGET_BIG_NAME |
10471 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10472 | ||
7b8e7dad AM |
10473 | #undef ELF_OSABI |
10474 | ||
d5e3d971 PB |
10475 | /* VxWorks uses the elf default section flags for .plt. */ |
10476 | static const struct bfd_elf_special_section * | |
10477 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) | |
9d8504b1 | 10478 | { |
d5e3d971 PB |
10479 | if (sec->name == NULL) |
10480 | return NULL; | |
10481 | ||
10482 | if (strcmp (sec->name, ".plt") == 0) | |
10483 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10484 | ||
10485 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10486 | } | |
9d8504b1 PB |
10487 | |
10488 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10489 | appropriately for VxWorks. */ | |
10490 | static struct bfd_link_hash_table * | |
10491 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10492 | { | |
10493 | struct bfd_link_hash_table *ret; | |
10494 | ||
10495 | ret = ppc_elf_link_hash_table_create (abfd); | |
10496 | if (ret) | |
10497 | { | |
10498 | struct ppc_elf_link_hash_table *htab | |
10499 | = (struct ppc_elf_link_hash_table *)ret; | |
10500 | htab->is_vxworks = 1; | |
4a3dc543 | 10501 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10502 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10503 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10504 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10505 | } | |
10506 | return ret; | |
10507 | } | |
10508 | ||
10509 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10510 | static bfd_boolean | |
10511 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10512 | struct bfd_link_info *info, | |
10513 | Elf_Internal_Sym *sym, | |
10514 | const char **namep ATTRIBUTE_UNUSED, | |
10515 | flagword *flagsp ATTRIBUTE_UNUSED, | |
10516 | asection **secp, | |
10517 | bfd_vma *valp) | |
10518 | { | |
10519 | if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, | |
10520 | valp)) | |
10521 | return FALSE; | |
10522 | ||
10523 | return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp); | |
10524 | } | |
10525 | ||
9d8504b1 PB |
10526 | static void |
10527 | ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
10528 | { | |
10529 | ppc_elf_final_write_processing(abfd, linker); | |
10530 | elf_vxworks_final_write_processing(abfd, linker); | |
10531 | } | |
10532 | ||
10533 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10534 | define it. */ | |
10535 | #undef elf_backend_want_plt_sym | |
10536 | #define elf_backend_want_plt_sym 1 | |
10537 | #undef elf_backend_want_got_plt | |
10538 | #define elf_backend_want_got_plt 1 | |
10539 | #undef elf_backend_got_symbol_offset | |
10540 | #define elf_backend_got_symbol_offset 0 | |
10541 | #undef elf_backend_plt_not_loaded | |
10542 | #define elf_backend_plt_not_loaded 0 | |
10543 | #undef elf_backend_plt_readonly | |
10544 | #define elf_backend_plt_readonly 1 | |
10545 | #undef elf_backend_got_header_size | |
10546 | #define elf_backend_got_header_size 12 | |
10547 | ||
468392fb AM |
10548 | #undef bfd_elf32_get_synthetic_symtab |
10549 | ||
9d8504b1 PB |
10550 | #undef bfd_elf32_bfd_link_hash_table_create |
10551 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10552 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10553 | #undef elf_backend_add_symbol_hook |
10554 | #define elf_backend_add_symbol_hook \ | |
10555 | ppc_elf_vxworks_add_symbol_hook | |
10556 | #undef elf_backend_link_output_symbol_hook | |
10557 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10558 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10559 | #undef elf_backend_final_write_processing |
10560 | #define elf_backend_final_write_processing \ | |
10561 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10562 | #undef elf_backend_get_sec_type_attr |
10563 | #define elf_backend_get_sec_type_attr \ | |
10564 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10565 | #undef elf_backend_emit_relocs |
10566 | #define elf_backend_emit_relocs \ | |
10567 | elf_vxworks_emit_relocs | |
10568 | ||
10569 | #undef elf32_bed | |
10570 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 10571 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
10572 | |
10573 | #include "elf32-target.h" |