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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
82704155 | 2 | Copyright (C) 1994-2019 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
ae9a127f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
ae9a127f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 10 | (at your option) any later version. |
252b5132 | 11 | |
ae9a127f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
ae9a127f | 17 | You should have received a copy of the GNU General Public License |
fc0bffd6 | 18 | along with this program; if not, write to the |
3e110533 | 19 | Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
53e09e0a | 20 | Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
cd123cb7 | 22 | |
252b5132 RH |
23 | /* This file is based on a preliminary PowerPC ELF ABI. The |
24 | information may not match the final PowerPC ELF ABI. It includes | |
25 | suggestions from the in-progress Embedded PowerPC ABI, and that | |
26 | information may also not match. */ | |
27 | ||
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
252b5132 | 30 | #include "bfd.h" |
252b5132 RH |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
34 | #include "elf/ppc.h" | |
7619e7c7 | 35 | #include "elf32-ppc.h" |
9d8504b1 | 36 | #include "elf-vxworks.h" |
6177242a | 37 | #include "dwarf2.h" |
08dc996f | 38 | #include "opcode/ppc.h" |
252b5132 | 39 | |
b9c361e0 JL |
40 | typedef enum split16_format_type |
41 | { | |
42 | split16a_type = 0, | |
43 | split16d_type | |
44 | } | |
45 | split16_format_type; | |
46 | ||
f0fe0e16 | 47 | /* RELA relocations are used here. */ |
252b5132 | 48 | |
252b5132 | 49 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 51 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 53 | |
70bccea4 AM |
54 | /* Branch prediction bit for branch taken relocs. */ |
55 | #define BRANCH_PREDICT_BIT 0x200000 | |
56 | /* Mask to set RA in memory instructions. */ | |
57 | #define RA_REGISTER_MASK 0x001f0000 | |
58 | /* Value to shift register by to insert RA. */ | |
59 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
60 | |
61 | /* The name of the dynamic interpreter. This is put in the .interp | |
62 | section. */ | |
252b5132 RH |
63 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
64 | ||
d7128ce4 | 65 | /* For old-style PLT. */ |
252b5132 RH |
66 | /* The number of single-slot PLT entries (the rest use two slots). */ |
67 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
68 | ||
d7128ce4 | 69 | /* For new-style .glink and .plt. */ |
a6aa5195 | 70 | #define GLINK_PLTRESOLVE 16*4 |
9e390558 | 71 | #define GLINK_ENTRY_SIZE(htab, h) \ |
407aa07c | 72 | ((4*4 \ |
9e390558 AM |
73 | + (h != NULL \ |
74 | && h == htab->tls_get_addr \ | |
75 | && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \ | |
76 | + (1u << htab->params->plt_stub_align) - 1) \ | |
77 | & -(1u << htab->params->plt_stub_align)) | |
d7128ce4 | 78 | |
9d8504b1 PB |
79 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
80 | ||
81 | /* The standard VxWorks PLT entry. */ | |
82 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
83 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
84 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
85 | { | |
07d6d2b8 AM |
86 | 0x3d800000, /* lis r12,0 */ |
87 | 0x818c0000, /* lwz r12,0(r12) */ | |
88 | 0x7d8903a6, /* mtctr r12 */ | |
89 | 0x4e800420, /* bctr */ | |
90 | 0x39600000, /* li r11,0 */ | |
91 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
92 | 0x60000000, /* nop */ | |
93 | 0x60000000, /* nop */ | |
9d8504b1 PB |
94 | }; |
95 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
96 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
97 | { | |
98 | 0x3d9e0000, /* addis r12,r30,0 */ | |
99 | 0x818c0000, /* lwz r12,0(r12) */ | |
100 | 0x7d8903a6, /* mtctr r12 */ | |
101 | 0x4e800420, /* bctr */ | |
102 | 0x39600000, /* li r11,0 */ | |
103 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
104 | 0x60000000, /* nop */ | |
105 | 0x60000000, /* nop */ | |
106 | }; | |
107 | ||
108 | /* The initial VxWorks PLT entry. */ | |
109 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
110 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
111 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
112 | { | |
07d6d2b8 AM |
113 | 0x3d800000, /* lis r12,0 */ |
114 | 0x398c0000, /* addi r12,r12,0 */ | |
115 | 0x800c0008, /* lwz r0,8(r12) */ | |
116 | 0x7c0903a6, /* mtctr r0 */ | |
117 | 0x818c0004, /* lwz r12,4(r12) */ | |
118 | 0x4e800420, /* bctr */ | |
119 | 0x60000000, /* nop */ | |
120 | 0x60000000, /* nop */ | |
9d8504b1 PB |
121 | }; |
122 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
123 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
124 | { | |
125 | 0x819e0008, /* lwz r12,8(r30) */ | |
07d6d2b8 | 126 | 0x7d8903a6, /* mtctr r12 */ |
9d8504b1 | 127 | 0x819e0004, /* lwz r12,4(r30) */ |
07d6d2b8 AM |
128 | 0x4e800420, /* bctr */ |
129 | 0x60000000, /* nop */ | |
130 | 0x60000000, /* nop */ | |
131 | 0x60000000, /* nop */ | |
132 | 0x60000000, /* nop */ | |
9d8504b1 PB |
133 | }; |
134 | ||
135 | /* For executables, we have some additional relocations in | |
136 | .rela.plt.unloaded, for the kernel loader. */ | |
137 | ||
138 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
139 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
140 | /* The number of relocations in the PLTResolve slot. */ | |
141 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
de194d85 | 142 | /* The number of relocations in the PLTResolve slot when creating |
9d8504b1 PB |
143 | a shared library. */ |
144 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
145 | ||
d7128ce4 | 146 | /* Some instructions. */ |
d7128ce4 | 147 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
148 | #define ADDIS_11_30 0x3d7e0000 |
149 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 150 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 151 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 152 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 153 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 | 154 | #define B 0x48000000 |
da3a2088 | 155 | #define BA 0x48000002 |
a6aa5195 | 156 | #define BCL_20_31 0x429f0005 |
d7128ce4 | 157 | #define BCTR 0x4e800420 |
a7f2871e AM |
158 | #define BEQLR 0x4d820020 |
159 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
160 | #define LIS_11 0x3d600000 |
161 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
162 | #define LWZU_0_12 0x840c0000 |
163 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 164 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
165 | #define LWZ_11_11 0x816b0000 |
166 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 167 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 168 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
169 | #define MR_0_3 0x7c601b78 |
170 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
171 | #define MFLR_0 0x7c0802a6 |
172 | #define MFLR_12 0x7d8802a6 | |
173 | #define MTCTR_0 0x7c0903a6 | |
174 | #define MTCTR_11 0x7d6903a6 | |
175 | #define MTLR_0 0x7c0803a6 | |
176 | #define NOP 0x60000000 | |
177 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
178 | |
179 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
180 | #define TP_OFFSET 0x7000 | |
181 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
182 | |
183 | /* The value of a defined global symbol. */ | |
184 | #define SYM_VAL(SYM) \ | |
185 | ((SYM)->root.u.def.section->output_section->vma \ | |
186 | + (SYM)->root.u.def.section->output_offset \ | |
187 | + (SYM)->root.u.def.value) | |
7fce784e | 188 | \f |
46807bf4 AM |
189 | /* Relocation HOWTO's. */ |
190 | /* Like other ELF RELA targets that don't apply multiple | |
191 | field-altering relocations to the same localation, src_mask is | |
192 | always zero and pcrel_offset is the same as pc_relative. | |
193 | PowerPC can always use a zero bitpos, even when the field is not at | |
194 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
195 | and bitpos=2 which matches the ABI description, or as we do here, | |
196 | rightshift=0, bitsize=26 and bitpos=0. */ | |
197 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
198 | complain, special_func) \ | |
199 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
200 | complain_overflow_ ## complain, special_func, \ | |
201 | #type, FALSE, 0, mask, pc_relative) | |
202 | ||
e47cd125 | 203 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 204 | |
8da6118f | 205 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 | 206 | /* This reloc does nothing. */ |
46807bf4 AM |
207 | HOW (R_PPC_NONE, 3, 0, 0, 0, FALSE, dont, |
208 | bfd_elf_generic_reloc), | |
252b5132 RH |
209 | |
210 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
211 | HOW (R_PPC_ADDR32, 2, 32, 0xffffffff, 0, FALSE, dont, |
212 | bfd_elf_generic_reloc), | |
252b5132 RH |
213 | |
214 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
215 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
216 | HOW (R_PPC_ADDR24, 2, 26, 0x3fffffc, 0, FALSE, signed, |
217 | bfd_elf_generic_reloc), | |
252b5132 RH |
218 | |
219 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
220 | HOW (R_PPC_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
221 | bfd_elf_generic_reloc), | |
252b5132 RH |
222 | |
223 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
224 | HOW (R_PPC_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
225 | bfd_elf_generic_reloc), | |
252b5132 RH |
226 | |
227 | /* The high order 16 bits of an address. */ | |
46807bf4 AM |
228 | HOW (R_PPC_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
229 | bfd_elf_generic_reloc), | |
252b5132 RH |
230 | |
231 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 232 | the low 16 bits, treated as a signed number, is negative. */ |
46807bf4 AM |
233 | HOW (R_PPC_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
234 | ppc_elf_addr16_ha_reloc), | |
252b5132 RH |
235 | |
236 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
237 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
238 | HOW (R_PPC_ADDR14, 2, 16, 0xfffc, 0, FALSE, signed, |
239 | bfd_elf_generic_reloc), | |
252b5132 RH |
240 | |
241 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
242 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 243 | bits must be zero. */ |
46807bf4 AM |
244 | HOW (R_PPC_ADDR14_BRTAKEN, 2, 16, 0xfffc, 0, FALSE, signed, |
245 | bfd_elf_generic_reloc), | |
252b5132 RH |
246 | |
247 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
248 | indicate that the branch is not expected to be taken. The lower | |
249 | two bits must be zero. */ | |
46807bf4 AM |
250 | HOW (R_PPC_ADDR14_BRNTAKEN, 2, 16, 0xfffc, 0, FALSE, signed, |
251 | bfd_elf_generic_reloc), | |
252b5132 | 252 | |
8da6118f | 253 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
254 | HOW (R_PPC_REL24, 2, 26, 0x3fffffc, 0, TRUE, signed, |
255 | bfd_elf_generic_reloc), | |
252b5132 | 256 | |
8da6118f | 257 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
258 | HOW (R_PPC_REL14, 2, 16, 0xfffc, 0, TRUE, signed, |
259 | bfd_elf_generic_reloc), | |
252b5132 | 260 | |
8da6118f | 261 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
262 | the branch is expected to be taken. The lower two bits must be |
263 | zero. */ | |
46807bf4 AM |
264 | HOW (R_PPC_REL14_BRTAKEN, 2, 16, 0xfffc, 0, TRUE, signed, |
265 | bfd_elf_generic_reloc), | |
252b5132 | 266 | |
8da6118f | 267 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
268 | the branch is not expected to be taken. The lower two bits must |
269 | be zero. */ | |
46807bf4 AM |
270 | HOW (R_PPC_REL14_BRNTAKEN, 2, 16, 0xfffc, 0, TRUE, signed, |
271 | bfd_elf_generic_reloc), | |
252b5132 RH |
272 | |
273 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
274 | symbol. */ | |
46807bf4 AM |
275 | HOW (R_PPC_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
276 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
277 | |
278 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
279 | the symbol. */ | |
46807bf4 AM |
280 | HOW (R_PPC_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
281 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
282 | |
283 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
284 | the symbol. */ | |
46807bf4 AM |
285 | HOW (R_PPC_GOT16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
286 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
287 | |
288 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
289 | the symbol. */ | |
46807bf4 AM |
290 | HOW (R_PPC_GOT16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
291 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
292 | |
293 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
294 | entry for the symbol. */ | |
46807bf4 AM |
295 | HOW (R_PPC_PLTREL24, 2, 26, 0x3fffffc, 0, TRUE, signed, |
296 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
297 | |
298 | /* This is used only by the dynamic linker. The symbol should exist | |
299 | both in the object being run and in some shared library. The | |
300 | dynamic linker copies the data addressed by the symbol from the | |
301 | shared library into the object, because the object being | |
302 | run has to have the data at some particular address. */ | |
46807bf4 AM |
303 | HOW (R_PPC_COPY, 2, 32, 0, 0, FALSE, dont, |
304 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
305 | |
306 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
307 | entries. */ | |
46807bf4 AM |
308 | HOW (R_PPC_GLOB_DAT, 2, 32, 0xffffffff, 0, FALSE, dont, |
309 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
310 | |
311 | /* Marks a procedure linkage table entry for a symbol. */ | |
46807bf4 AM |
312 | HOW (R_PPC_JMP_SLOT, 2, 32, 0, 0, FALSE, dont, |
313 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
314 | |
315 | /* Used only by the dynamic linker. When the object is run, this | |
316 | longword is set to the load address of the object, plus the | |
317 | addend. */ | |
46807bf4 AM |
318 | HOW (R_PPC_RELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont, |
319 | bfd_elf_generic_reloc), | |
252b5132 RH |
320 | |
321 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
322 | object rather than the final value. Normally used for | |
323 | _GLOBAL_OFFSET_TABLE_. */ | |
46807bf4 AM |
324 | HOW (R_PPC_LOCAL24PC, 2, 26, 0x3fffffc, 0, TRUE, signed, |
325 | bfd_elf_generic_reloc), | |
252b5132 RH |
326 | |
327 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
328 | HOW (R_PPC_UADDR32, 2, 32, 0xffffffff, 0, FALSE, dont, |
329 | bfd_elf_generic_reloc), | |
252b5132 RH |
330 | |
331 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
332 | HOW (R_PPC_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
333 | bfd_elf_generic_reloc), | |
252b5132 RH |
334 | |
335 | /* 32-bit PC relative */ | |
46807bf4 AM |
336 | HOW (R_PPC_REL32, 2, 32, 0xffffffff, 0, TRUE, dont, |
337 | bfd_elf_generic_reloc), | |
252b5132 RH |
338 | |
339 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 340 | FIXME: not supported. */ |
46807bf4 AM |
341 | HOW (R_PPC_PLT32, 2, 32, 0, 0, FALSE, dont, |
342 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
343 | |
344 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 345 | FIXME: not supported. */ |
46807bf4 AM |
346 | HOW (R_PPC_PLTREL32, 2, 32, 0, 0, TRUE, dont, |
347 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
348 | |
349 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
350 | the symbol. */ | |
46807bf4 AM |
351 | HOW (R_PPC_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
352 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
353 | |
354 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
355 | the symbol. */ | |
46807bf4 AM |
356 | HOW (R_PPC_PLT16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
357 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
358 | |
359 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
360 | the symbol. */ | |
46807bf4 AM |
361 | HOW (R_PPC_PLT16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
362 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
363 | |
364 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
365 | small data items. */ | |
46807bf4 AM |
366 | HOW (R_PPC_SDAREL16, 1, 16, 0xffff, 0, FALSE, signed, |
367 | ppc_elf_unhandled_reloc), | |
252b5132 | 368 | |
c061c2d8 | 369 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
370 | HOW (R_PPC_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
371 | ppc_elf_unhandled_reloc), | |
252b5132 | 372 | |
c3668558 | 373 | /* 16-bit lower half section relative relocation. */ |
46807bf4 AM |
374 | HOW (R_PPC_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
375 | ppc_elf_unhandled_reloc), | |
252b5132 | 376 | |
c3668558 | 377 | /* 16-bit upper half section relative relocation. */ |
46807bf4 AM |
378 | HOW (R_PPC_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, dont, |
379 | ppc_elf_unhandled_reloc), | |
252b5132 | 380 | |
c3668558 | 381 | /* 16-bit upper half adjusted section relative relocation. */ |
46807bf4 AM |
382 | HOW (R_PPC_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, dont, |
383 | ppc_elf_unhandled_reloc), | |
252b5132 | 384 | |
727fc41e | 385 | /* Marker relocs for TLS. */ |
46807bf4 AM |
386 | HOW (R_PPC_TLS, 2, 32, 0, 0, FALSE, dont, |
387 | bfd_elf_generic_reloc), | |
388 | ||
389 | HOW (R_PPC_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
390 | bfd_elf_generic_reloc), | |
391 | ||
392 | HOW (R_PPC_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
393 | bfd_elf_generic_reloc), | |
727fc41e | 394 | |
23cedd1d | 395 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
396 | HOW (R_PPC_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
397 | bfd_elf_generic_reloc), | |
398 | ||
399 | HOW (R_PPC_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
400 | bfd_elf_generic_reloc), | |
23cedd1d | 401 | |
7619e7c7 AM |
402 | /* Computes the load module index of the load module that contains the |
403 | definition of its TLS sym. */ | |
46807bf4 AM |
404 | HOW (R_PPC_DTPMOD32, 2, 32, 0xffffffff, 0, FALSE, dont, |
405 | ppc_elf_unhandled_reloc), | |
252b5132 | 406 | |
7619e7c7 AM |
407 | /* Computes a dtv-relative displacement, the difference between the value |
408 | of sym+add and the base address of the thread-local storage block that | |
409 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
410 | HOW (R_PPC_DTPREL32, 2, 32, 0xffffffff, 0, FALSE, dont, |
411 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
412 | |
413 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
414 | HOW (R_PPC_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
415 | ppc_elf_unhandled_reloc), | |
252b5132 | 416 | |
7619e7c7 | 417 | /* Like DTPREL16, but no overflow. */ |
46807bf4 AM |
418 | HOW (R_PPC_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
419 | ppc_elf_unhandled_reloc), | |
252b5132 | 420 | |
7619e7c7 | 421 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
422 | HOW (R_PPC_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
423 | ppc_elf_unhandled_reloc), | |
252b5132 | 424 | |
7619e7c7 | 425 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
426 | HOW (R_PPC_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
427 | ppc_elf_unhandled_reloc), | |
252b5132 | 428 | |
7619e7c7 AM |
429 | /* Computes a tp-relative displacement, the difference between the value of |
430 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
431 | HOW (R_PPC_TPREL32, 2, 32, 0xffffffff, 0, FALSE, dont, |
432 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
433 | |
434 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
435 | HOW (R_PPC_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
436 | ppc_elf_unhandled_reloc), | |
252b5132 | 437 | |
7619e7c7 | 438 | /* Like TPREL16, but no overflow. */ |
46807bf4 AM |
439 | HOW (R_PPC_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
440 | ppc_elf_unhandled_reloc), | |
252b5132 | 441 | |
7619e7c7 | 442 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
443 | HOW (R_PPC_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
444 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
445 | |
446 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
447 | HOW (R_PPC_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
448 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
449 | |
450 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
451 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
452 | to the first entry. */ | |
46807bf4 AM |
453 | HOW (R_PPC_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
454 | ppc_elf_unhandled_reloc), | |
252b5132 | 455 | |
7619e7c7 | 456 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
457 | HOW (R_PPC_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
458 | ppc_elf_unhandled_reloc), | |
252b5132 | 459 | |
7619e7c7 | 460 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
461 | HOW (R_PPC_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
462 | ppc_elf_unhandled_reloc), | |
252b5132 | 463 | |
7619e7c7 | 464 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
465 | HOW (R_PPC_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
466 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
467 | |
468 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
469 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
470 | first entry. */ | |
46807bf4 AM |
471 | HOW (R_PPC_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
472 | ppc_elf_unhandled_reloc), | |
252b5132 | 473 | |
7619e7c7 | 474 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
475 | HOW (R_PPC_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
476 | ppc_elf_unhandled_reloc), | |
252b5132 | 477 | |
7619e7c7 | 478 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
479 | HOW (R_PPC_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
480 | ppc_elf_unhandled_reloc), | |
252b5132 | 481 | |
7619e7c7 | 482 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
483 | HOW (R_PPC_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
484 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
485 | |
486 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
487 | the offset to the entry. */ | |
46807bf4 AM |
488 | HOW (R_PPC_GOT_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
489 | ppc_elf_unhandled_reloc), | |
252b5132 | 490 | |
7619e7c7 | 491 | /* Like GOT_DTPREL16, but no overflow. */ |
46807bf4 AM |
492 | HOW (R_PPC_GOT_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
493 | ppc_elf_unhandled_reloc), | |
252b5132 | 494 | |
7619e7c7 | 495 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
496 | HOW (R_PPC_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
497 | ppc_elf_unhandled_reloc), | |
252b5132 | 498 | |
7619e7c7 | 499 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
500 | HOW (R_PPC_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
501 | ppc_elf_unhandled_reloc), | |
c3668558 | 502 | |
7619e7c7 AM |
503 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
504 | offset to the entry. */ | |
46807bf4 AM |
505 | HOW (R_PPC_GOT_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
506 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
507 | |
508 | /* Like GOT_TPREL16, but no overflow. */ | |
46807bf4 AM |
509 | HOW (R_PPC_GOT_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
510 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
511 | |
512 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
513 | HOW (R_PPC_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
514 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
515 | |
516 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
517 | HOW (R_PPC_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
518 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
519 | |
520 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
521 | in the SVR4 ELF ABI. */ | |
522 | ||
523 | /* 32 bit value resulting from the addend minus the symbol. */ | |
46807bf4 AM |
524 | HOW (R_PPC_EMB_NADDR32, 2, 32, 0xffffffff, 0, FALSE, dont, |
525 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
526 | |
527 | /* 16 bit value resulting from the addend minus the symbol. */ | |
46807bf4 AM |
528 | HOW (R_PPC_EMB_NADDR16, 1, 16, 0xffff, 0, FALSE, signed, |
529 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
530 | |
531 | /* 16 bit value resulting from the addend minus the symbol. */ | |
46807bf4 AM |
532 | HOW (R_PPC_EMB_NADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
533 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
534 | |
535 | /* The high order 16 bits of the addend minus the symbol. */ | |
46807bf4 AM |
536 | HOW (R_PPC_EMB_NADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
537 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
538 | |
539 | /* The high order 16 bits of the result of the addend minus the address, | |
540 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
541 | is negative. */ | |
46807bf4 AM |
542 | HOW (R_PPC_EMB_NADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
543 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
544 | |
545 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
546 | address in the .sdata section, and returning the offset from | |
547 | _SDA_BASE_ for that relocation. */ | |
46807bf4 AM |
548 | HOW (R_PPC_EMB_SDAI16, 1, 16, 0xffff, 0, FALSE, signed, |
549 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
550 | |
551 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
552 | address in the .sdata2 section, and returning the offset from | |
553 | _SDA2_BASE_ for that relocation. */ | |
46807bf4 AM |
554 | HOW (R_PPC_EMB_SDA2I16, 1, 16, 0xffff, 0, FALSE, signed, |
555 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
556 | |
557 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
558 | small data items. */ | |
46807bf4 AM |
559 | HOW (R_PPC_EMB_SDA2REL, 1, 16, 0xffff, 0, FALSE, signed, |
560 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
561 | |
562 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
563 | signed offset from the appropriate base, and filling in the register | |
564 | field with the appropriate register (0, 2, or 13). */ | |
46807bf4 AM |
565 | HOW (R_PPC_EMB_SDA21, 2, 16, 0xffff, 0, FALSE, signed, |
566 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
567 | |
568 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
569 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
570 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
571 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
572 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
573 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
574 | ||
575 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
576 | in the 16 bit signed offset from the appropriate base, and filling in the | |
577 | register field with the appropriate register (0, 2, or 13). */ | |
46807bf4 AM |
578 | HOW (R_PPC_EMB_RELSDA, 1, 16, 0xffff, 0, FALSE, signed, |
579 | ppc_elf_unhandled_reloc), | |
25dbc73a | 580 | |
b9c361e0 | 581 | /* A relative 8 bit branch. */ |
46807bf4 AM |
582 | HOW (R_PPC_VLE_REL8, 1, 8, 0xff, 1, TRUE, signed, |
583 | bfd_elf_generic_reloc), | |
68ffbac6 | 584 | |
b9c361e0 | 585 | /* A relative 15 bit branch. */ |
46807bf4 AM |
586 | HOW (R_PPC_VLE_REL15, 2, 16, 0xfffe, 0, TRUE, signed, |
587 | bfd_elf_generic_reloc), | |
b9c361e0 | 588 | |
68ffbac6 | 589 | /* A relative 24 bit branch. */ |
46807bf4 AM |
590 | HOW (R_PPC_VLE_REL24, 2, 25, 0x1fffffe, 0, TRUE, signed, |
591 | bfd_elf_generic_reloc), | |
b9c361e0 JL |
592 | |
593 | /* The 16 LSBS in split16a format. */ | |
46807bf4 AM |
594 | HOW (R_PPC_VLE_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont, |
595 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
596 | |
597 | /* The 16 LSBS in split16d format. */ | |
46807bf4 AM |
598 | HOW (R_PPC_VLE_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont, |
599 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
600 | |
601 | /* Bits 16-31 split16a format. */ | |
46807bf4 AM |
602 | HOW (R_PPC_VLE_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
603 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
604 | |
605 | /* Bits 16-31 split16d format. */ | |
46807bf4 AM |
606 | HOW (R_PPC_VLE_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
607 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
608 | |
609 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
46807bf4 AM |
610 | HOW (R_PPC_VLE_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
611 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
612 | |
613 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
46807bf4 AM |
614 | HOW (R_PPC_VLE_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
615 | ppc_elf_unhandled_reloc), | |
b9c361e0 | 616 | |
86c95733 AM |
617 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
618 | instructions. If the register base is 0 then the linker changes | |
619 | the e_add16i to an e_li instruction. */ | |
46807bf4 AM |
620 | HOW (R_PPC_VLE_SDA21, 2, 16, 0xffff, 0, FALSE, signed, |
621 | ppc_elf_unhandled_reloc), | |
b9c361e0 | 622 | |
86c95733 | 623 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
46807bf4 AM |
624 | HOW (R_PPC_VLE_SDA21_LO, 2, 16, 0xffff, 0, FALSE, dont, |
625 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
626 | |
627 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
46807bf4 AM |
628 | HOW (R_PPC_VLE_SDAREL_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont, |
629 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
630 | |
631 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
46807bf4 AM |
632 | HOW (R_PPC_VLE_SDAREL_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont, |
633 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
634 | |
635 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
46807bf4 AM |
636 | HOW (R_PPC_VLE_SDAREL_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
637 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
638 | |
639 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
46807bf4 AM |
640 | HOW (R_PPC_VLE_SDAREL_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
641 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
642 | |
643 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
46807bf4 AM |
644 | HOW (R_PPC_VLE_SDAREL_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
645 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
646 | |
647 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
46807bf4 AM |
648 | HOW (R_PPC_VLE_SDAREL_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
649 | ppc_elf_unhandled_reloc), | |
b9c361e0 | 650 | |
83eef883 | 651 | /* e_li split20 format. */ |
bb6bf75e AM |
652 | HOW (R_PPC_VLE_ADDR20, 2, 20, 0x1f7fff, 0, FALSE, dont, |
653 | ppc_elf_unhandled_reloc), | |
46807bf4 AM |
654 | |
655 | HOW (R_PPC_IRELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont, | |
656 | ppc_elf_unhandled_reloc), | |
e054468f | 657 | |
d7128ce4 | 658 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
659 | HOW (R_PPC_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
660 | bfd_elf_generic_reloc), | |
d7128ce4 AM |
661 | |
662 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
663 | HOW (R_PPC_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
664 | bfd_elf_generic_reloc), | |
d7128ce4 AM |
665 | |
666 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
667 | HOW (R_PPC_REL16_HI, 1, 16, 0xffff, 16, TRUE, dont, |
668 | bfd_elf_generic_reloc), | |
d7128ce4 AM |
669 | |
670 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
671 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
672 | HOW (R_PPC_REL16_HA, 1, 16, 0xffff, 16, TRUE, dont, |
673 | ppc_elf_addr16_ha_reloc), | |
d7128ce4 | 674 | |
a680de9a | 675 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
676 | HOW (R_PPC_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
677 | ppc_elf_addr16_ha_reloc), | |
a680de9a | 678 | |
7ba71655 | 679 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
680 | HOW (R_PPC_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
681 | ppc_elf_addr16_ha_reloc), | |
7ba71655 | 682 | |
25dbc73a | 683 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
684 | HOW (R_PPC_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
685 | NULL), | |
25dbc73a AM |
686 | |
687 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
688 | HOW (R_PPC_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
689 | NULL), | |
7619e7c7 | 690 | |
25dbc73a | 691 | /* Phony reloc to handle AIX style TOC entries. */ |
46807bf4 AM |
692 | HOW (R_PPC_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
693 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
694 | }; |
695 | \f | |
696 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
697 | ||
698 | static void | |
699 | ppc_elf_howto_init (void) | |
700 | { | |
701 | unsigned int i, type; | |
702 | ||
703 | for (i = 0; | |
704 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
705 | i++) | |
706 | { | |
707 | type = ppc_elf_howto_raw[i].type; | |
708 | if (type >= (sizeof (ppc_elf_howto_table) | |
709 | / sizeof (ppc_elf_howto_table[0]))) | |
710 | abort (); | |
711 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
712 | } | |
713 | } | |
714 | ||
715 | static reloc_howto_type * | |
716 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
717 | bfd_reloc_code_real_type code) | |
718 | { | |
719 | enum elf_ppc_reloc_type r; | |
720 | ||
721 | /* Initialize howto table if not already done. */ | |
722 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
723 | ppc_elf_howto_init (); | |
724 | ||
725 | switch (code) | |
726 | { | |
727 | default: | |
728 | return NULL; | |
729 | ||
730 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
731 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
732 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 733 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 734 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 735 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
736 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
737 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
738 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
739 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
740 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
741 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
742 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
743 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
744 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
745 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 746 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 747 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 748 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
749 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
750 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
751 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
752 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
753 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
754 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
755 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
756 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
757 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
758 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 759 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
760 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
761 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
762 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
763 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 764 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 765 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 766 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
767 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
768 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
769 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
770 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 771 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
772 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
773 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
774 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
775 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 776 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 777 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 778 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 779 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
780 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
781 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
782 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
783 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 784 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 785 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 786 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
787 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
788 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
789 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
790 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
791 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
792 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
793 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
794 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
795 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
796 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
797 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
798 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
799 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
800 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
801 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
802 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
803 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
804 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
805 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
806 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
807 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
808 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
809 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
810 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
811 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
812 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
813 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
814 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
815 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
816 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
817 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
818 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
819 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
820 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
821 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
822 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
823 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
824 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
825 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
826 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
827 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
828 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
829 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
830 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
831 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
832 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
833 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
834 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
835 | r = R_PPC_VLE_SDAREL_LO16A; | |
836 | break; | |
837 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
838 | r = R_PPC_VLE_SDAREL_LO16D; | |
839 | break; | |
840 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
841 | r = R_PPC_VLE_SDAREL_HI16A; | |
842 | break; | |
843 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
844 | r = R_PPC_VLE_SDAREL_HI16D; | |
845 | break; | |
846 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
847 | r = R_PPC_VLE_SDAREL_HA16A; | |
848 | break; | |
849 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
850 | r = R_PPC_VLE_SDAREL_HA16D; | |
851 | break; | |
d7128ce4 AM |
852 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
853 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
854 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
855 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
7ba71655 | 856 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break; |
a680de9a | 857 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
858 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
859 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
860 | } | |
861 | ||
862 | return ppc_elf_howto_table[r]; | |
863 | }; | |
864 | ||
157090f7 AM |
865 | static reloc_howto_type * |
866 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
867 | const char *r_name) | |
868 | { | |
869 | unsigned int i; | |
870 | ||
871 | for (i = 0; | |
872 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
873 | i++) | |
874 | if (ppc_elf_howto_raw[i].name != NULL | |
875 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
876 | return &ppc_elf_howto_raw[i]; | |
877 | ||
878 | return NULL; | |
879 | } | |
880 | ||
25dbc73a AM |
881 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
882 | ||
f3185997 | 883 | static bfd_boolean |
4aef7643 | 884 | ppc_elf_info_to_howto (bfd *abfd, |
25dbc73a AM |
885 | arelent *cache_ptr, |
886 | Elf_Internal_Rela *dst) | |
887 | { | |
cd21f5da NC |
888 | unsigned int r_type; |
889 | ||
25dbc73a AM |
890 | /* Initialize howto table if not already done. */ |
891 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
892 | ppc_elf_howto_init (); | |
893 | ||
cd21f5da NC |
894 | r_type = ELF32_R_TYPE (dst->r_info); |
895 | if (r_type >= R_PPC_max) | |
896 | { | |
695344c0 | 897 | /* xgettext:c-format */ |
0aa13fee | 898 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 899 | abfd, r_type); |
cd21f5da | 900 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 901 | return FALSE; |
cd21f5da | 902 | } |
f3185997 | 903 | |
cd21f5da | 904 | cache_ptr->howto = ppc_elf_howto_table[r_type]; |
375de94a AM |
905 | |
906 | /* Just because the above assert didn't trigger doesn't mean that | |
907 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
f3185997 | 908 | if (cache_ptr->howto == NULL) |
375de94a | 909 | { |
695344c0 | 910 | /* xgettext:c-format */ |
0aa13fee | 911 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 912 | abfd, r_type); |
375de94a AM |
913 | bfd_set_error (bfd_error_bad_value); |
914 | ||
f3185997 | 915 | return FALSE; |
375de94a | 916 | } |
f3185997 NC |
917 | |
918 | return TRUE; | |
25dbc73a AM |
919 | } |
920 | ||
d7128ce4 | 921 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
922 | |
923 | static bfd_reloc_status_type | |
4aef7643 | 924 | ppc_elf_addr16_ha_reloc (bfd *abfd, |
25dbc73a AM |
925 | arelent *reloc_entry, |
926 | asymbol *symbol, | |
4aef7643 | 927 | void *data, |
25dbc73a AM |
928 | asection *input_section, |
929 | bfd *output_bfd, | |
930 | char **error_message ATTRIBUTE_UNUSED) | |
931 | { | |
a680de9a PB |
932 | enum elf_ppc_reloc_type r_type; |
933 | long insn; | |
934 | bfd_size_type octets; | |
935 | bfd_vma value; | |
25dbc73a AM |
936 | |
937 | if (output_bfd != NULL) | |
938 | { | |
939 | reloc_entry->address += input_section->output_offset; | |
940 | return bfd_reloc_ok; | |
941 | } | |
942 | ||
a680de9a PB |
943 | reloc_entry->addend += 0x8000; |
944 | r_type = reloc_entry->howto->type; | |
945 | if (r_type != R_PPC_REL16DX_HA) | |
946 | return bfd_reloc_continue; | |
947 | ||
948 | value = 0; | |
949 | if (!bfd_is_com_section (symbol->section)) | |
950 | value = symbol->value; | |
951 | value += (reloc_entry->addend | |
952 | + symbol->section->output_offset | |
953 | + symbol->section->output_section->vma); | |
954 | value -= (reloc_entry->address | |
955 | + input_section->output_offset | |
956 | + input_section->output_section->vma); | |
957 | value >>= 16; | |
958 | ||
959 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
960 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
961 | insn &= ~0x1fffc1; | |
962 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
963 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
964 | return bfd_reloc_ok; | |
25dbc73a AM |
965 | } |
966 | ||
967 | static bfd_reloc_status_type | |
968 | ppc_elf_unhandled_reloc (bfd *abfd, | |
969 | arelent *reloc_entry, | |
970 | asymbol *symbol, | |
971 | void *data, | |
972 | asection *input_section, | |
973 | bfd *output_bfd, | |
974 | char **error_message) | |
975 | { | |
976 | /* If this is a relocatable link (output_bfd test tells us), just | |
977 | call the generic function. Any adjustment will be done at final | |
978 | link time. */ | |
979 | if (output_bfd != NULL) | |
980 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
981 | input_section, output_bfd, error_message); | |
982 | ||
983 | if (error_message != NULL) | |
984 | { | |
985 | static char buf[60]; | |
986 | sprintf (buf, _("generic linker can't handle %s"), | |
987 | reloc_entry->howto->name); | |
988 | *error_message = buf; | |
989 | } | |
990 | return bfd_reloc_dangerous; | |
991 | } | |
992 | \f | |
993 | /* Sections created by the linker. */ | |
994 | ||
995 | typedef struct elf_linker_section | |
996 | { | |
c9a2f333 | 997 | /* Pointer to the bfd section. */ |
25dbc73a | 998 | asection *section; |
c9a2f333 AM |
999 | /* Section name. */ |
1000 | const char *name; | |
1001 | /* Associated bss section name. */ | |
1002 | const char *bss_name; | |
1003 | /* Associated symbol name. */ | |
1004 | const char *sym_name; | |
046183de AM |
1005 | /* Associated symbol. */ |
1006 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
1007 | } elf_linker_section_t; |
1008 | ||
1009 | /* Linked list of allocated pointer entries. This hangs off of the | |
1010 | symbol lists, and provides allows us to return different pointers, | |
1011 | based on different addend's. */ | |
1012 | ||
1013 | typedef struct elf_linker_section_pointers | |
1014 | { | |
1015 | /* next allocated pointer for this symbol */ | |
1016 | struct elf_linker_section_pointers *next; | |
1017 | /* offset of pointer from beginning of section */ | |
1018 | bfd_vma offset; | |
1019 | /* addend used */ | |
1020 | bfd_vma addend; | |
1021 | /* which linker section this is */ | |
1022 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1023 | } elf_linker_section_pointers_t; |
1024 | ||
1025 | struct ppc_elf_obj_tdata | |
1026 | { | |
1027 | struct elf_obj_tdata elf; | |
1028 | ||
1029 | /* A mapping from local symbols to offsets into the various linker | |
1030 | sections added. This is index by the symbol index. */ | |
1031 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
1032 | |
1033 | /* Flags used to auto-detect plt type. */ | |
1034 | unsigned int makes_plt_call : 1; | |
1035 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
1036 | }; |
1037 | ||
1038 | #define ppc_elf_tdata(bfd) \ | |
1039 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1040 | |
25dbc73a AM |
1041 | #define elf_local_ptr_offsets(bfd) \ |
1042 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1043 | |
0c8d6e5c AM |
1044 | #define is_ppc_elf(bfd) \ |
1045 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1046 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 1047 | |
25dbc73a | 1048 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1049 | |
25dbc73a AM |
1050 | static bfd_boolean |
1051 | ppc_elf_mkobject (bfd *abfd) | |
1052 | { | |
0ffa91dd | 1053 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 1054 | PPC32_ELF_DATA); |
25dbc73a | 1055 | } |
7619e7c7 | 1056 | |
14b57c7c AM |
1057 | /* When defaulting arch/mach, decode apuinfo to find a better match. */ |
1058 | ||
1059 | bfd_boolean | |
1060 | _bfd_elf_ppc_set_arch (bfd *abfd) | |
1061 | { | |
1062 | unsigned long mach = 0; | |
1063 | asection *s; | |
1064 | unsigned char *contents; | |
1065 | ||
1066 | if (abfd->arch_info->bits_per_word == 32 | |
1067 | && bfd_big_endian (abfd)) | |
1068 | { | |
1069 | ||
1070 | for (s = abfd->sections; s != NULL; s = s->next) | |
1071 | if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0) | |
1072 | break; | |
1073 | if (s != NULL) | |
1074 | mach = bfd_mach_ppc_vle; | |
1075 | } | |
1076 | ||
1077 | if (mach == 0) | |
1078 | { | |
1079 | s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
62a47958 AM |
1080 | if (s != NULL |
1081 | && s->size >= 24 | |
1082 | && bfd_malloc_and_get_section (abfd, s, &contents)) | |
14b57c7c AM |
1083 | { |
1084 | unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4); | |
1085 | unsigned int i; | |
1086 | ||
1087 | for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4) | |
1088 | { | |
1089 | unsigned int val = bfd_get_32 (abfd, contents + i); | |
1090 | switch (val >> 16) | |
1091 | { | |
1092 | case PPC_APUINFO_PMR: | |
1093 | case PPC_APUINFO_RFMCI: | |
1094 | if (mach == 0) | |
1095 | mach = bfd_mach_ppc_titan; | |
1096 | break; | |
1097 | ||
1098 | case PPC_APUINFO_ISEL: | |
1099 | case PPC_APUINFO_CACHELCK: | |
1100 | if (mach == bfd_mach_ppc_titan) | |
1101 | mach = bfd_mach_ppc_e500mc; | |
1102 | break; | |
1103 | ||
1104 | case PPC_APUINFO_SPE: | |
1105 | case PPC_APUINFO_EFS: | |
1106 | case PPC_APUINFO_BRLOCK: | |
1107 | if (mach != bfd_mach_ppc_vle) | |
1108 | mach = bfd_mach_ppc_e500; | |
8941017b | 1109 | break; |
14b57c7c AM |
1110 | |
1111 | case PPC_APUINFO_VLE: | |
1112 | mach = bfd_mach_ppc_vle; | |
1113 | break; | |
1114 | ||
1115 | default: | |
1116 | mach = -1ul; | |
1117 | } | |
1118 | } | |
1119 | free (contents); | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | if (mach != 0 && mach != -1ul) | |
1124 | { | |
1125 | const bfd_arch_info_type *arch; | |
1126 | ||
1127 | for (arch = abfd->arch_info->next; arch; arch = arch->next) | |
1128 | if (arch->mach == mach) | |
1129 | { | |
1130 | abfd->arch_info = arch; | |
1131 | break; | |
1132 | } | |
1133 | } | |
1134 | return TRUE; | |
1135 | } | |
1136 | ||
25dbc73a | 1137 | /* Fix bad default arch selected for a 32 bit input bfd when the |
14b57c7c | 1138 | default is 64 bit. Also select arch based on apuinfo. */ |
7619e7c7 | 1139 | |
25dbc73a AM |
1140 | static bfd_boolean |
1141 | ppc_elf_object_p (bfd *abfd) | |
1142 | { | |
14b57c7c AM |
1143 | if (!abfd->arch_info->the_default) |
1144 | return TRUE; | |
1145 | ||
1146 | if (abfd->arch_info->bits_per_word == 64) | |
25dbc73a AM |
1147 | { |
1148 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1149 | |
25dbc73a AM |
1150 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1151 | { | |
1152 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1153 | abfd->arch_info = abfd->arch_info->next; | |
1154 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1155 | } | |
1156 | } | |
14b57c7c | 1157 | return _bfd_elf_ppc_set_arch (abfd); |
25dbc73a | 1158 | } |
7619e7c7 | 1159 | |
25dbc73a | 1160 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1161 | |
25dbc73a AM |
1162 | static bfd_boolean |
1163 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1164 | { | |
1165 | BFD_ASSERT (!elf_flags_init (abfd) | |
1166 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1167 | |
25dbc73a AM |
1168 | elf_elfheader (abfd)->e_flags = flags; |
1169 | elf_flags_init (abfd) = TRUE; | |
1170 | return TRUE; | |
1171 | } | |
1172 | ||
25dbc73a | 1173 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1174 | |
b34976b6 | 1175 | static bfd_boolean |
25dbc73a | 1176 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1177 | { |
25dbc73a AM |
1178 | int offset; |
1179 | unsigned int size; | |
252b5132 | 1180 | |
25dbc73a AM |
1181 | switch (note->descsz) |
1182 | { | |
1183 | default: | |
1184 | return FALSE; | |
252b5132 | 1185 | |
25dbc73a AM |
1186 | case 268: /* Linux/PPC. */ |
1187 | /* pr_cursig */ | |
228e534f | 1188 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 1189 | |
25dbc73a | 1190 | /* pr_pid */ |
228e534f | 1191 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 1192 | |
25dbc73a AM |
1193 | /* pr_reg */ |
1194 | offset = 72; | |
1195 | size = 192; | |
deaaf2f3 | 1196 | |
25dbc73a AM |
1197 | break; |
1198 | } | |
deaaf2f3 | 1199 | |
25dbc73a AM |
1200 | /* Make a ".reg/999" section. */ |
1201 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1202 | size, note->descpos + offset); | |
1203 | } | |
252b5132 | 1204 | |
25dbc73a AM |
1205 | static bfd_boolean |
1206 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1207 | { | |
1208 | switch (note->descsz) | |
deaaf2f3 | 1209 | { |
25dbc73a AM |
1210 | default: |
1211 | return FALSE; | |
deaaf2f3 | 1212 | |
25dbc73a | 1213 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 1214 | elf_tdata (abfd)->core->pid |
bc989cdc | 1215 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 1216 | elf_tdata (abfd)->core->program |
25dbc73a | 1217 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 1218 | elf_tdata (abfd)->core->command |
25dbc73a AM |
1219 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
1220 | } | |
9abc968f | 1221 | |
25dbc73a AM |
1222 | /* Note that for some reason, a spurious space is tacked |
1223 | onto the end of the args in some (at least one anyway) | |
1224 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1225 | |
25dbc73a | 1226 | { |
228e534f | 1227 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 1228 | int n = strlen (command); |
70bccea4 | 1229 | |
25dbc73a AM |
1230 | if (0 < n && command[n - 1] == ' ') |
1231 | command[n - 1] = '\0'; | |
1232 | } | |
deaaf2f3 | 1233 | |
25dbc73a AM |
1234 | return TRUE; |
1235 | } | |
deaaf2f3 | 1236 | |
183e98be AM |
1237 | static char * |
1238 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
1239 | { | |
1240 | switch (note_type) | |
1241 | { | |
1242 | default: | |
1243 | return NULL; | |
1244 | ||
1245 | case NT_PRPSINFO: | |
1246 | { | |
602f1657 | 1247 | char data[128] ATTRIBUTE_NONSTRING; |
183e98be AM |
1248 | va_list ap; |
1249 | ||
1250 | va_start (ap, note_type); | |
75cd47ed | 1251 | memset (data, 0, sizeof (data)); |
183e98be | 1252 | strncpy (data + 32, va_arg (ap, const char *), 16); |
be3e27bb | 1253 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1254 | DIAGNOSTIC_PUSH; |
be3e27bb | 1255 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1256 | -Wstringop-truncation: |
1257 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1258 | */ | |
95da9854 L |
1259 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1260 | #endif | |
183e98be | 1261 | strncpy (data + 48, va_arg (ap, const char *), 80); |
be3e27bb | 1262 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1263 | DIAGNOSTIC_POP; |
fe75810f | 1264 | #endif |
183e98be AM |
1265 | va_end (ap); |
1266 | return elfcore_write_note (abfd, buf, bufsiz, | |
1267 | "CORE", note_type, data, sizeof (data)); | |
1268 | } | |
1269 | ||
1270 | case NT_PRSTATUS: | |
1271 | { | |
1272 | char data[268]; | |
1273 | va_list ap; | |
1274 | long pid; | |
1275 | int cursig; | |
1276 | const void *greg; | |
1277 | ||
1278 | va_start (ap, note_type); | |
1279 | memset (data, 0, 72); | |
1280 | pid = va_arg (ap, long); | |
1281 | bfd_put_32 (abfd, pid, data + 24); | |
1282 | cursig = va_arg (ap, int); | |
1283 | bfd_put_16 (abfd, cursig, data + 12); | |
1284 | greg = va_arg (ap, const void *); | |
1285 | memcpy (data + 72, greg, 192); | |
1286 | memset (data + 264, 0, 4); | |
1287 | va_end (ap); | |
1288 | return elfcore_write_note (abfd, buf, bufsiz, | |
1289 | "CORE", note_type, data, sizeof (data)); | |
1290 | } | |
1291 | } | |
1292 | } | |
1293 | ||
b9c361e0 | 1294 | static flagword |
68ffbac6 | 1295 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
1296 | { |
1297 | ||
1298 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
1299 | return SHF_PPC_VLE; | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
25dbc73a AM |
1304 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1305 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1306 | |
25dbc73a AM |
1307 | static bfd_vma |
1308 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1309 | const asection *plt ATTRIBUTE_UNUSED, | |
1310 | const arelent *rel) | |
1311 | { | |
1312 | return rel->address; | |
1313 | } | |
deaaf2f3 | 1314 | |
25dbc73a | 1315 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1316 | is called when bfd_section_from_shdr finds a section with an unknown |
1317 | type. */ | |
deaaf2f3 | 1318 | |
25dbc73a | 1319 | static bfd_boolean |
6dc132d9 L |
1320 | ppc_elf_section_from_shdr (bfd *abfd, |
1321 | Elf_Internal_Shdr *hdr, | |
1322 | const char *name, | |
1323 | int shindex) | |
25dbc73a AM |
1324 | { |
1325 | asection *newsect; | |
1326 | flagword flags; | |
d1c6de6f | 1327 | |
6dc132d9 | 1328 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1329 | return FALSE; |
deaaf2f3 | 1330 | |
25dbc73a AM |
1331 | newsect = hdr->bfd_section; |
1332 | flags = bfd_get_section_flags (abfd, newsect); | |
1333 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1334 | flags |= SEC_EXCLUDE; | |
9abc968f | 1335 | |
25dbc73a AM |
1336 | if (hdr->sh_type == SHT_ORDERED) |
1337 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1338 | |
25dbc73a AM |
1339 | bfd_set_section_flags (abfd, newsect, flags); |
1340 | return TRUE; | |
1341 | } | |
1342 | ||
1343 | /* Set up any other section flags and such that may be necessary. */ | |
1344 | ||
1345 | static bfd_boolean | |
1346 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1347 | Elf_Internal_Shdr *shdr, | |
1348 | asection *asect) | |
1349 | { | |
25dbc73a AM |
1350 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
1351 | shdr->sh_type = SHT_ORDERED; | |
1352 | ||
1353 | return TRUE; | |
1354 | } | |
1355 | ||
1356 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
1357 | need to bump up the number of section headers. */ | |
1358 | ||
1359 | static int | |
a6b96beb AM |
1360 | ppc_elf_additional_program_headers (bfd *abfd, |
1361 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
1362 | { |
1363 | asection *s; | |
1364 | int ret = 0; | |
d1c6de6f | 1365 | |
25dbc73a AM |
1366 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
1367 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1368 | ++ret; | |
d1c6de6f | 1369 | |
25dbc73a AM |
1370 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
1371 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1372 | ++ret; | |
deaaf2f3 | 1373 | |
25dbc73a AM |
1374 | return ret; |
1375 | } | |
deaaf2f3 | 1376 | |
68ffbac6 | 1377 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
1378 | |
1379 | bfd_boolean | |
1380 | ppc_elf_modify_segment_map (bfd *abfd, | |
1381 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1382 | { | |
f7d69005 | 1383 | struct elf_segment_map *m; |
b9c361e0 JL |
1384 | |
1385 | /* At this point in the link, output sections have already been sorted by | |
1386 | LMA and assigned to segments. All that is left to do is to ensure | |
1387 | there is no mixing of VLE & non-VLE sections in a text segment. | |
1388 | If we find that case, we split the segment. | |
1389 | We maintain the original output section order. */ | |
1390 | ||
12bd6957 | 1391 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 | 1392 | { |
f7d69005 AM |
1393 | struct elf_segment_map *n; |
1394 | bfd_size_type amt; | |
1395 | unsigned int j, k; | |
1396 | unsigned int p_flags; | |
1397 | ||
1398 | if (m->p_type != PT_LOAD || m->count == 0) | |
b9c361e0 JL |
1399 | continue; |
1400 | ||
f7d69005 | 1401 | for (p_flags = PF_R, j = 0; j != m->count; ++j) |
b9c361e0 | 1402 | { |
f7d69005 AM |
1403 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
1404 | p_flags |= PF_W; | |
1405 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
1406 | { | |
1407 | p_flags |= PF_X; | |
1408 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
1409 | p_flags |= PF_PPC_VLE; | |
1410 | break; | |
1411 | } | |
1412 | } | |
1413 | if (j != m->count) | |
1414 | while (++j != m->count) | |
1415 | { | |
1416 | unsigned int p_flags1 = PF_R; | |
94caa966 | 1417 | |
f7d69005 AM |
1418 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
1419 | p_flags1 |= PF_W; | |
1420 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
1421 | { | |
1422 | p_flags1 |= PF_X; | |
1423 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
1424 | p_flags1 |= PF_PPC_VLE; | |
1425 | if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0) | |
1426 | break; | |
1427 | } | |
1428 | p_flags |= p_flags1; | |
1429 | } | |
1430 | /* If we're splitting a segment which originally contained rw | |
1431 | sections then those sections might now only be in one of the | |
1432 | two parts. So always set p_flags if splitting, even if we | |
1433 | are being called for objcopy with p_flags_valid set. */ | |
1434 | if (j != m->count || !m->p_flags_valid) | |
1435 | { | |
1436 | m->p_flags_valid = 1; | |
1437 | m->p_flags = p_flags; | |
1438 | } | |
1439 | if (j == m->count) | |
b9c361e0 JL |
1440 | continue; |
1441 | ||
f7d69005 | 1442 | /* Sections 0..j-1 stay in this (current) segment, |
b9c361e0 JL |
1443 | the remainder are put in a new segment. |
1444 | The scan resumes with the new segment. */ | |
1445 | ||
b9c361e0 JL |
1446 | amt = sizeof (struct elf_segment_map); |
1447 | amt += (m->count - j - 1) * sizeof (asection *); | |
1448 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
1449 | if (n == NULL) | |
954b63d4 | 1450 | return FALSE; |
b9c361e0 JL |
1451 | |
1452 | n->p_type = PT_LOAD; | |
b9c361e0 JL |
1453 | n->count = m->count - j; |
1454 | for (k = 0; k < n->count; ++k) | |
f7d69005 AM |
1455 | n->sections[k] = m->sections[j + k]; |
1456 | m->count = j; | |
1457 | m->p_size_valid = 0; | |
b9c361e0 JL |
1458 | n->next = m->next; |
1459 | m->next = n; | |
b9c361e0 JL |
1460 | } |
1461 | ||
1462 | return TRUE; | |
1463 | } | |
1464 | ||
25dbc73a AM |
1465 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
1466 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
1467 | that the linker doesn't crater when trying to make more than | |
1468 | 2 sections. */ | |
e656e369 | 1469 | |
b35d266b | 1470 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 1471 | { |
14b57c7c AM |
1472 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
1473 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
1474 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1475 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1476 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1477 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
1478 | { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 }, | |
1479 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1480 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1481 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1482 | }; |
1483 | ||
551b43fd AM |
1484 | /* This is what we want for new plt/got. */ |
1485 | static struct bfd_elf_special_section ppc_alt_plt = | |
07d6d2b8 | 1486 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
1487 | |
1488 | static const struct bfd_elf_special_section * | |
4aef7643 | 1489 | ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
7f4d3958 | 1490 | { |
b35d266b | 1491 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
1492 | |
1493 | /* See if this is one of the special sections. */ | |
1494 | if (sec->name == NULL) | |
1495 | return NULL; | |
1496 | ||
1497 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
1498 | sec->use_rela_p); | |
1499 | if (ssect != NULL) | |
1500 | { | |
1501 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
1502 | ssect = &ppc_alt_plt; | |
1503 | return ssect; | |
1504 | } | |
1505 | ||
1506 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
1507 | } | |
25dbc73a AM |
1508 | \f |
1509 | /* Very simple linked list structure for recording apuinfo values. */ | |
1510 | typedef struct apuinfo_list | |
1511 | { | |
1512 | struct apuinfo_list *next; | |
1513 | unsigned long value; | |
1514 | } | |
1515 | apuinfo_list; | |
e656e369 | 1516 | |
25dbc73a | 1517 | static apuinfo_list *head; |
f2faa800 | 1518 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 1519 | |
25dbc73a AM |
1520 | static void |
1521 | apuinfo_list_init (void) | |
1522 | { | |
1523 | head = NULL; | |
f2faa800 | 1524 | apuinfo_set = FALSE; |
25dbc73a | 1525 | } |
9abc968f | 1526 | |
25dbc73a AM |
1527 | static void |
1528 | apuinfo_list_add (unsigned long value) | |
1529 | { | |
1530 | apuinfo_list *entry = head; | |
deaaf2f3 | 1531 | |
25dbc73a AM |
1532 | while (entry != NULL) |
1533 | { | |
1534 | if (entry->value == value) | |
1535 | return; | |
1536 | entry = entry->next; | |
1537 | } | |
b4a38de6 | 1538 | |
25dbc73a AM |
1539 | entry = bfd_malloc (sizeof (* entry)); |
1540 | if (entry == NULL) | |
1541 | return; | |
e656e369 | 1542 | |
25dbc73a AM |
1543 | entry->value = value; |
1544 | entry->next = head; | |
1545 | head = entry; | |
1546 | } | |
9abc968f | 1547 | |
25dbc73a AM |
1548 | static unsigned |
1549 | apuinfo_list_length (void) | |
1550 | { | |
1551 | apuinfo_list *entry; | |
1552 | unsigned long count; | |
9abc968f | 1553 | |
25dbc73a AM |
1554 | for (entry = head, count = 0; |
1555 | entry; | |
1556 | entry = entry->next) | |
1557 | ++ count; | |
e656e369 | 1558 | |
25dbc73a AM |
1559 | return count; |
1560 | } | |
eea6121a | 1561 | |
25dbc73a AM |
1562 | static inline unsigned long |
1563 | apuinfo_list_element (unsigned long number) | |
1564 | { | |
1565 | apuinfo_list * entry; | |
e656e369 | 1566 | |
25dbc73a AM |
1567 | for (entry = head; |
1568 | entry && number --; | |
1569 | entry = entry->next) | |
1570 | ; | |
252b5132 | 1571 | |
25dbc73a AM |
1572 | return entry ? entry->value : 0; |
1573 | } | |
1574 | ||
1575 | static void | |
1576 | apuinfo_list_finish (void) | |
1577 | { | |
1578 | apuinfo_list *entry; | |
1579 | ||
1580 | for (entry = head; entry;) | |
252b5132 | 1581 | { |
25dbc73a AM |
1582 | apuinfo_list *next = entry->next; |
1583 | free (entry); | |
1584 | entry = next; | |
1585 | } | |
9abc968f | 1586 | |
25dbc73a AM |
1587 | head = NULL; |
1588 | } | |
9abc968f | 1589 | |
25dbc73a AM |
1590 | /* Scan the input BFDs and create a linked list of |
1591 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 1592 | |
25dbc73a AM |
1593 | static void |
1594 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
1595 | { | |
1596 | bfd *ibfd; | |
1597 | asection *asec; | |
deddc40b NS |
1598 | char *buffer = NULL; |
1599 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 1600 | unsigned i; |
25dbc73a AM |
1601 | unsigned long length; |
1602 | const char *error_message = NULL; | |
9abc968f | 1603 | |
25dbc73a AM |
1604 | if (link_info == NULL) |
1605 | return; | |
9abc968f | 1606 | |
25dbc73a | 1607 | apuinfo_list_init (); |
252b5132 | 1608 | |
25dbc73a | 1609 | /* Read in the input sections contents. */ |
c72f2fb2 | 1610 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 1611 | { |
25dbc73a | 1612 | unsigned long datum; |
252b5132 | 1613 | |
25dbc73a AM |
1614 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
1615 | if (asec == NULL) | |
1616 | continue; | |
252b5132 | 1617 | |
695344c0 | 1618 | /* xgettext:c-format */ |
871b3ab2 | 1619 | error_message = _("corrupt %s section in %pB"); |
25dbc73a | 1620 | length = asec->size; |
deddc40b NS |
1621 | if (length < 20) |
1622 | goto fail; | |
1623 | ||
f2faa800 | 1624 | apuinfo_set = TRUE; |
deddc40b | 1625 | if (largest_input_size < asec->size) |
25dbc73a | 1626 | { |
deddc40b NS |
1627 | if (buffer) |
1628 | free (buffer); | |
1629 | largest_input_size = asec->size; | |
1630 | buffer = bfd_malloc (largest_input_size); | |
1631 | if (!buffer) | |
1632 | return; | |
25dbc73a | 1633 | } |
5b914448 | 1634 | |
25dbc73a | 1635 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 1636 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a | 1637 | { |
695344c0 | 1638 | /* xgettext:c-format */ |
871b3ab2 | 1639 | error_message = _("unable to read in %s section from %pB"); |
25dbc73a AM |
1640 | goto fail; |
1641 | } | |
252b5132 | 1642 | |
25dbc73a AM |
1643 | /* Verify the contents of the header. Note - we have to |
1644 | extract the values this way in order to allow for a | |
1645 | host whose endian-ness is different from the target. */ | |
deddc40b | 1646 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
1647 | if (datum != sizeof APUINFO_LABEL) |
1648 | goto fail; | |
252b5132 | 1649 | |
deddc40b | 1650 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
1651 | if (datum != 0x2) |
1652 | goto fail; | |
252b5132 | 1653 | |
deddc40b | 1654 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 1655 | goto fail; |
252b5132 | 1656 | |
25dbc73a | 1657 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 1658 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
1659 | if (datum + 20 != length) |
1660 | goto fail; | |
1661 | ||
25dbc73a AM |
1662 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
1663 | for (i = 0; i < datum; i += 4) | |
deddc40b | 1664 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
1665 | } |
1666 | ||
25dbc73a | 1667 | error_message = NULL; |
252b5132 | 1668 | |
f2faa800 | 1669 | if (apuinfo_set) |
deddc40b | 1670 | { |
f2faa800 NS |
1671 | /* Compute the size of the output section. */ |
1672 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 1673 | |
deddc40b NS |
1674 | /* Set the output section size, if it exists. */ |
1675 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 1676 | |
deddc40b NS |
1677 | if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4)) |
1678 | { | |
1679 | ibfd = abfd; | |
695344c0 | 1680 | /* xgettext:c-format */ |
871b3ab2 | 1681 | error_message = _("warning: unable to set size of %s section in %pB"); |
deddc40b NS |
1682 | } |
1683 | } | |
25dbc73a AM |
1684 | |
1685 | fail: | |
deddc40b NS |
1686 | if (buffer) |
1687 | free (buffer); | |
25dbc73a AM |
1688 | |
1689 | if (error_message) | |
cd9af601 | 1690 | _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd); |
25dbc73a | 1691 | } |
252b5132 | 1692 | |
25dbc73a AM |
1693 | /* Prevent the output section from accumulating the input sections' |
1694 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 1695 | |
25dbc73a AM |
1696 | static bfd_boolean |
1697 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 1698 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
1699 | asection *asec, |
1700 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
1701 | { | |
f2faa800 | 1702 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
1703 | } |
1704 | ||
25dbc73a AM |
1705 | /* Finally we can generate the output section. */ |
1706 | ||
1707 | static void | |
cc364be6 | 1708 | ppc_final_write_processing (bfd *abfd) |
7619e7c7 | 1709 | { |
25dbc73a AM |
1710 | bfd_byte *buffer; |
1711 | asection *asec; | |
1712 | unsigned i; | |
1713 | unsigned num_entries; | |
1714 | bfd_size_type length; | |
7619e7c7 | 1715 | |
25dbc73a AM |
1716 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
1717 | if (asec == NULL) | |
1718 | return; | |
1719 | ||
f2faa800 | 1720 | if (!apuinfo_set) |
25dbc73a AM |
1721 | return; |
1722 | ||
1723 | length = asec->size; | |
1724 | if (length < 20) | |
1725 | return; | |
1726 | ||
1727 | buffer = bfd_malloc (length); | |
1728 | if (buffer == NULL) | |
7619e7c7 | 1729 | { |
4eca0228 | 1730 | _bfd_error_handler |
cf97bcb0 | 1731 | (_("failed to allocate space for new APUinfo section")); |
25dbc73a | 1732 | return; |
7619e7c7 | 1733 | } |
7619e7c7 | 1734 | |
25dbc73a AM |
1735 | /* Create the apuinfo header. */ |
1736 | num_entries = apuinfo_list_length (); | |
1737 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
1738 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
1739 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
1740 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 1741 | |
25dbc73a AM |
1742 | length = 20; |
1743 | for (i = 0; i < num_entries; i++) | |
feee612b | 1744 | { |
25dbc73a AM |
1745 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
1746 | length += 4; | |
feee612b | 1747 | } |
feee612b | 1748 | |
25dbc73a | 1749 | if (length != asec->size) |
cf97bcb0 | 1750 | _bfd_error_handler (_("failed to compute new APUinfo section")); |
252b5132 | 1751 | |
25dbc73a | 1752 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
cf97bcb0 | 1753 | _bfd_error_handler (_("failed to install new APUinfo section")); |
252b5132 | 1754 | |
25dbc73a AM |
1755 | free (buffer); |
1756 | ||
1757 | apuinfo_list_finish (); | |
252b5132 | 1758 | } |
06f44071 | 1759 | |
cc364be6 AM |
1760 | static bfd_boolean |
1761 | ppc_elf_final_write_processing (bfd *abfd) | |
06f44071 | 1762 | { |
cc364be6 AM |
1763 | ppc_final_write_processing (abfd); |
1764 | return _bfd_elf_final_write_processing (abfd); | |
06f44071 | 1765 | } |
25dbc73a | 1766 | \f |
7382d32a | 1767 | static bfd_boolean |
c6dd29ce | 1768 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 1769 | { |
407aa07c | 1770 | bfd_byte buf[4 * 4]; |
7382d32a | 1771 | |
9e390558 | 1772 | if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf)) |
7382d32a AM |
1773 | return FALSE; |
1774 | ||
c6dd29ce AM |
1775 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
1776 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
407aa07c AM |
1777 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 |
1778 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
1779 | } |
1780 | ||
468392fb AM |
1781 | static bfd_boolean |
1782 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
1783 | { | |
1784 | bfd_vma vma = *(bfd_vma *) ptr; | |
1785 | return ((section->flags & SEC_ALLOC) != 0 | |
1786 | && section->vma <= vma | |
1787 | && vma < section->vma + section->size); | |
1788 | } | |
1789 | ||
1790 | static long | |
1791 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
1792 | long dynsymcount, asymbol **dynsyms, | |
1793 | asymbol **ret) | |
1794 | { | |
1795 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
1796 | asection *plt, *relplt, *dynamic, *glink; | |
1797 | bfd_vma glink_vma = 0; | |
1798 | bfd_vma resolv_vma = 0; | |
9e390558 | 1799 | bfd_vma stub_off; |
468392fb AM |
1800 | asymbol *s; |
1801 | arelent *p; | |
9e390558 | 1802 | long count, i, stub_delta; |
468392fb AM |
1803 | size_t size; |
1804 | char *names; | |
1805 | bfd_byte buf[4]; | |
1806 | ||
1807 | *ret = NULL; | |
1808 | ||
1809 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
1810 | return 0; | |
1811 | ||
1812 | if (dynsymcount <= 0) | |
1813 | return 0; | |
1814 | ||
1815 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
1816 | if (relplt == NULL) | |
1817 | return 0; | |
1818 | ||
1819 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
1820 | if (plt == NULL) | |
1821 | return 0; | |
1822 | ||
1823 | /* Call common code to handle old-style executable PLTs. */ | |
1824 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
1825 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
1826 | dynsymcount, dynsyms, ret); | |
1827 | ||
1828 | /* If this object was prelinked, the prelinker stored the address | |
1829 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
1830 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
1831 | if (dynamic != NULL) | |
1832 | { | |
1833 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
1834 | size_t extdynsize; | |
1835 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
1836 | ||
1837 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
1838 | return -1; | |
1839 | ||
1840 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1841 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1842 | ||
1843 | extdyn = dynbuf; | |
1844 | extdynend = extdyn + dynamic->size; | |
1845 | for (; extdyn < extdynend; extdyn += extdynsize) | |
1846 | { | |
1847 | Elf_Internal_Dyn dyn; | |
1848 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
1849 | ||
1850 | if (dyn.d_tag == DT_NULL) | |
1851 | break; | |
1852 | ||
1853 | if (dyn.d_tag == DT_PPC_GOT) | |
1854 | { | |
1855 | unsigned int g_o_t = dyn.d_un.d_val; | |
1856 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
1857 | if (got != NULL | |
1858 | && bfd_get_section_contents (abfd, got, buf, | |
1859 | g_o_t - got->vma + 4, 4)) | |
1860 | glink_vma = bfd_get_32 (abfd, buf); | |
1861 | break; | |
1862 | } | |
1863 | } | |
1864 | free (dynbuf); | |
1865 | } | |
1866 | ||
1867 | /* Otherwise we read the first plt entry. */ | |
1868 | if (glink_vma == 0) | |
1869 | { | |
1870 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
1871 | glink_vma = bfd_get_32 (abfd, buf); | |
1872 | } | |
1873 | ||
1874 | if (glink_vma == 0) | |
1875 | return 0; | |
1876 | ||
1877 | /* The .glink section usually does not survive the final | |
1878 | link; search for the section (usually .text) where the | |
1879 | glink stubs now reside. */ | |
1880 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
1881 | if (glink == NULL) | |
1882 | return 0; | |
1883 | ||
1884 | /* Determine glink PLT resolver by reading the relative branch | |
1885 | from the first glink stub. */ | |
1886 | if (bfd_get_section_contents (abfd, glink, buf, | |
1887 | glink_vma - glink->vma, 4)) | |
1888 | { | |
1889 | unsigned int insn = bfd_get_32 (abfd, buf); | |
1890 | ||
1891 | /* The first glink stub may either branch to the resolver ... */ | |
1892 | insn ^= B; | |
1893 | if ((insn & ~0x3fffffc) == 0) | |
1894 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
1895 | ||
1896 | /* ... or fall through a bunch of NOPs. */ | |
1897 | else if ((insn ^ B ^ NOP) == 0) | |
1898 | for (i = 4; | |
1899 | bfd_get_section_contents (abfd, glink, buf, | |
1900 | glink_vma - glink->vma + i, 4); | |
1901 | i += 4) | |
1902 | if (bfd_get_32 (abfd, buf) != NOP) | |
1903 | { | |
1904 | resolv_vma = glink_vma + i; | |
1905 | break; | |
1906 | } | |
1907 | } | |
1908 | ||
7382d32a | 1909 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
1910 | /* If the stubs are those for -shared/-pie then we might have |
1911 | multiple stubs for each plt entry. If that is the case then | |
1912 | there is no way to associate stubs with their plt entries short | |
9e390558 AM |
1913 | of figuring out the GOT pointer value used in the stub. |
1914 | The offsets tested here need to cover all possible values of | |
1915 | GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */ | |
1916 | stub_off = glink_vma - glink->vma; | |
1917 | for (stub_delta = 16; stub_delta <= 32; stub_delta += 8) | |
1918 | if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta)) | |
1919 | break; | |
1920 | if (stub_delta > 32) | |
7382d32a AM |
1921 | return 0; |
1922 | ||
468392fb AM |
1923 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
1924 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
1925 | return -1; | |
1926 | ||
468392fb AM |
1927 | size = count * sizeof (asymbol); |
1928 | p = relplt->relocation; | |
1929 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
1930 | { |
1931 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
1932 | if (p->addend != 0) | |
1933 | size += sizeof ("+0x") - 1 + 8; | |
1934 | } | |
468392fb AM |
1935 | |
1936 | size += sizeof (asymbol) + sizeof ("__glink"); | |
1937 | ||
1938 | if (resolv_vma) | |
1939 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
1940 | ||
1941 | s = *ret = bfd_malloc (size); | |
1942 | if (s == NULL) | |
1943 | return -1; | |
1944 | ||
9e390558 | 1945 | stub_off = glink_vma - glink->vma; |
468392fb | 1946 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
1947 | p = relplt->relocation + count - 1; |
1948 | for (i = 0; i < count; i++) | |
468392fb AM |
1949 | { |
1950 | size_t len; | |
1951 | ||
9e390558 AM |
1952 | stub_off -= stub_delta; |
1953 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
1954 | stub_off -= 32; | |
468392fb AM |
1955 | *s = **p->sym_ptr_ptr; |
1956 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
1957 | we are defining a symbol, ensure one of them is set. */ | |
1958 | if ((s->flags & BSF_LOCAL) == 0) | |
1959 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 1960 | s->flags |= BSF_SYNTHETIC; |
468392fb | 1961 | s->section = glink; |
9e390558 | 1962 | s->value = stub_off; |
468392fb AM |
1963 | s->name = names; |
1964 | s->udata.p = NULL; | |
1965 | len = strlen ((*p->sym_ptr_ptr)->name); | |
1966 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
1967 | names += len; | |
e054468f AM |
1968 | if (p->addend != 0) |
1969 | { | |
1970 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
1971 | names += sizeof ("+0x") - 1; | |
1972 | bfd_sprintf_vma (abfd, names, p->addend); | |
1973 | names += strlen (names); | |
1974 | } | |
468392fb AM |
1975 | memcpy (names, "@plt", sizeof ("@plt")); |
1976 | names += sizeof ("@plt"); | |
1977 | ++s; | |
1079403c | 1978 | --p; |
468392fb AM |
1979 | } |
1980 | ||
1981 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 1982 | memset (s, 0, sizeof *s); |
468392fb | 1983 | s->the_bfd = abfd; |
6ba2a415 | 1984 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
1985 | s->section = glink; |
1986 | s->value = glink_vma - glink->vma; | |
1987 | s->name = names; | |
1988 | memcpy (names, "__glink", sizeof ("__glink")); | |
1989 | names += sizeof ("__glink"); | |
1990 | s++; | |
1991 | count++; | |
1992 | ||
1993 | if (resolv_vma) | |
1994 | { | |
1995 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 1996 | memset (s, 0, sizeof *s); |
468392fb | 1997 | s->the_bfd = abfd; |
6ba2a415 | 1998 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
1999 | s->section = glink; |
2000 | s->value = resolv_vma - glink->vma; | |
2001 | s->name = names; | |
2002 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
2003 | names += sizeof ("__glink_PLTresolve"); | |
2004 | s++; | |
2005 | count++; | |
2006 | } | |
2007 | ||
2008 | return count; | |
2009 | } | |
2010 | \f | |
25dbc73a AM |
2011 | /* The following functions are specific to the ELF linker, while |
2012 | functions above are used generally. They appear in this file more | |
2013 | or less in the order in which they are called. eg. | |
2014 | ppc_elf_check_relocs is called early in the link process, | |
2015 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2016 | called. */ | |
252b5132 | 2017 | |
a6aa5195 | 2018 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 2019 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
2020 | struct plt_entry |
2021 | { | |
2022 | struct plt_entry *next; | |
2023 | ||
2024 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
2025 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
2026 | GOT pointer reg. It will always be at least 32768. (Current |
2027 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
2028 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
2029 | bfd_vma addend; |
2030 | ||
2031 | /* The .got2 section. */ | |
2032 | asection *sec; | |
2033 | ||
2034 | /* PLT refcount or offset. */ | |
2035 | union | |
2036 | { | |
2037 | bfd_signed_vma refcount; | |
2038 | bfd_vma offset; | |
2039 | } plt; | |
2040 | ||
2041 | /* .glink stub offset. */ | |
2042 | bfd_vma glink_offset; | |
2043 | }; | |
2044 | ||
7c8bbca5 AM |
2045 | /* Of those relocs that might be copied as dynamic relocs, this |
2046 | function selects those that must be copied when linking a shared | |
2047 | library or PIE, even when the symbol is local. */ | |
252b5132 | 2048 | |
1d483afe AM |
2049 | static int |
2050 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2051 | enum elf_ppc_reloc_type r_type) | |
2052 | { | |
2053 | switch (r_type) | |
2054 | { | |
2055 | default: | |
7c8bbca5 AM |
2056 | /* Only relative relocs can be resolved when the object load |
2057 | address isn't fixed. DTPREL32 is excluded because the | |
2058 | dynamic linker needs to differentiate global dynamic from | |
2059 | local dynamic __tls_index pairs when PPC_OPT_TLS is set. */ | |
1d483afe AM |
2060 | return 1; |
2061 | ||
2062 | case R_PPC_REL24: | |
2063 | case R_PPC_REL14: | |
2064 | case R_PPC_REL14_BRTAKEN: | |
2065 | case R_PPC_REL14_BRNTAKEN: | |
2066 | case R_PPC_REL32: | |
2067 | return 0; | |
2068 | ||
2069 | case R_PPC_TPREL32: | |
2070 | case R_PPC_TPREL16: | |
2071 | case R_PPC_TPREL16_LO: | |
2072 | case R_PPC_TPREL16_HI: | |
2073 | case R_PPC_TPREL16_HA: | |
7c8bbca5 AM |
2074 | /* These relocations are relative but in a shared library the |
2075 | linker doesn't know the thread pointer base. */ | |
2076 | return bfd_link_dll (info); | |
1d483afe AM |
2077 | } |
2078 | } | |
252b5132 | 2079 | |
25dbc73a AM |
2080 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2081 | copying dynamic variables from a shared lib into an app's dynbss | |
2082 | section, and instead use a dynamic relocation to point into the | |
2083 | shared lib. */ | |
2084 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2085 | |
f95f8542 AM |
2086 | /* Used to track dynamic relocations for local symbols. */ |
2087 | struct ppc_dyn_relocs | |
2088 | { | |
2089 | struct ppc_dyn_relocs *next; | |
2090 | ||
2091 | /* The input section of the reloc. */ | |
2092 | asection *sec; | |
2093 | ||
2094 | /* Total number of relocs copied for the input section. */ | |
2095 | unsigned int count : 31; | |
2096 | ||
2097 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
2098 | unsigned int ifunc : 1; | |
2099 | }; | |
2100 | ||
25dbc73a | 2101 | /* PPC ELF linker hash entry. */ |
252b5132 | 2102 | |
25dbc73a AM |
2103 | struct ppc_elf_link_hash_entry |
2104 | { | |
2105 | struct elf_link_hash_entry elf; | |
252b5132 | 2106 | |
25dbc73a AM |
2107 | /* If this symbol is used in the linker created sections, the processor |
2108 | specific backend uses this field to map the field into the offset | |
2109 | from the beginning of the section. */ | |
2110 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2111 | |
25dbc73a | 2112 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 2113 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 2114 | |
37da22e5 AM |
2115 | /* Contexts in which symbol is used in the GOT. |
2116 | Bits are or'd into the mask as the corresponding relocs are | |
2117 | encountered during check_relocs, with TLS_TLS being set when any | |
2118 | of the other TLS bits are set. tls_optimize clears bits when | |
2119 | optimizing to indicate the corresponding GOT entry type is not | |
2120 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 2121 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
2122 | These flags are also kept for local symbols. */ |
2123 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
2124 | #define TLS_GD 2 /* GD reloc. */ | |
2125 | #define TLS_LD 4 /* LD reloc. */ | |
2126 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
2127 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
2128 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 2129 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
bac3c8c5 | 2130 | unsigned char tls_mask; |
4dc4a9a5 | 2131 | |
37da22e5 AM |
2132 | /* The above field is also used to mark function symbols. In which |
2133 | case TLS_TLS will be 0. */ | |
2134 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 2135 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 AM |
2136 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
2137 | ||
4dc4a9a5 DJ |
2138 | /* Nonzero if we have seen a small data relocation referring to this |
2139 | symbol. */ | |
d3e454b9 AM |
2140 | unsigned char has_sda_refs : 1; |
2141 | ||
2142 | /* Flag use of given relocations. */ | |
2143 | unsigned char has_addr16_ha : 1; | |
2144 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 2145 | }; |
252b5132 | 2146 | |
25dbc73a AM |
2147 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2148 | ||
2149 | /* PPC ELF linker hash table. */ | |
2150 | ||
2151 | struct ppc_elf_link_hash_table | |
2152 | { | |
2153 | struct elf_link_hash_table elf; | |
2154 | ||
5446cbdf AM |
2155 | /* Various options passed from the linker. */ |
2156 | struct ppc_elf_params *params; | |
2157 | ||
25dbc73a | 2158 | /* Short-cuts to get to dynamic linker sections. */ |
d7128ce4 | 2159 | asection *glink; |
25dbc73a AM |
2160 | asection *dynsbss; |
2161 | asection *relsbss; | |
c9a2f333 | 2162 | elf_linker_section_t sdata[2]; |
25dbc73a | 2163 | asection *sbss; |
6177242a | 2164 | asection *glink_eh_frame; |
2d7ad24e AM |
2165 | asection *pltlocal; |
2166 | asection *relpltlocal; | |
25dbc73a | 2167 | |
016687f8 AM |
2168 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
2169 | asection *srelplt2; | |
2170 | ||
1d483afe | 2171 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 2172 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 2173 | |
016687f8 AM |
2174 | /* The bfd that forced an old-style PLT. */ |
2175 | bfd *old_bfd; | |
5b914448 | 2176 | |
25dbc73a AM |
2177 | /* TLS local dynamic got entry handling. */ |
2178 | union { | |
2179 | bfd_signed_vma refcount; | |
2180 | bfd_vma offset; | |
2181 | } tlsld_got; | |
252b5132 | 2182 | |
c6dd29ce | 2183 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
2184 | bfd_vma glink_pltresolve; |
2185 | ||
3b36f7e6 AM |
2186 | /* Size of reserved GOT entries. */ |
2187 | unsigned int got_header_size; | |
2188 | /* Non-zero if allocating the header left a gap. */ | |
2189 | unsigned int got_gap; | |
2190 | ||
4a3dc543 RS |
2191 | /* The type of PLT we have chosen to use. */ |
2192 | enum ppc_elf_plt_type plt_type; | |
2193 | ||
9d8504b1 | 2194 | /* True if the target system is VxWorks. */ |
016687f8 | 2195 | unsigned int is_vxworks:1; |
9d8504b1 | 2196 | |
82e66161 AM |
2197 | /* Whether there exist local gnu indirect function resolvers, |
2198 | referenced by dynamic relocations. */ | |
2199 | unsigned int local_ifunc_resolver:1; | |
2200 | unsigned int maybe_local_ifunc_resolver:1; | |
2201 | ||
9a23f96e AM |
2202 | /* Set if tls optimization is enabled. */ |
2203 | unsigned int do_tls_opt:1; | |
2204 | ||
3e04d765 AM |
2205 | /* Set if inline plt calls should be converted to direct calls. */ |
2206 | unsigned int can_convert_all_inline_plt:1; | |
2207 | ||
9d8504b1 PB |
2208 | /* The size of PLT entries. */ |
2209 | int plt_entry_size; | |
2210 | /* The distance between adjacent PLT slots. */ | |
2211 | int plt_slot_size; | |
2212 | /* The size of the first PLT entry. */ | |
2213 | int plt_initial_entry_size; | |
016687f8 | 2214 | |
87d72d41 AM |
2215 | /* Small local sym cache. */ |
2216 | struct sym_cache sym_cache; | |
25dbc73a | 2217 | }; |
252b5132 | 2218 | |
94caa966 AM |
2219 | /* Rename some of the generic section flags to better document how they |
2220 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
2221 | ||
2222 | /* Nonzero if this section has TLS related relocations. */ | |
2223 | #define has_tls_reloc sec_flg0 | |
2224 | ||
2225 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
2226 | #define has_tls_get_addr_call sec_flg1 | |
2227 | ||
3e04d765 AM |
2228 | /* Flag set when PLTCALL relocs are detected. */ |
2229 | #define has_pltcall sec_flg2 | |
2230 | ||
25dbc73a | 2231 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2232 | |
25dbc73a | 2233 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
2234 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
2235 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 2236 | |
25dbc73a | 2237 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2238 | |
25dbc73a AM |
2239 | static struct bfd_hash_entry * |
2240 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2241 | struct bfd_hash_table *table, | |
2242 | const char *string) | |
252b5132 | 2243 | { |
25dbc73a AM |
2244 | /* Allocate the structure if it has not already been allocated by a |
2245 | subclass. */ | |
2246 | if (entry == NULL) | |
2247 | { | |
2248 | entry = bfd_hash_allocate (table, | |
2249 | sizeof (struct ppc_elf_link_hash_entry)); | |
2250 | if (entry == NULL) | |
2251 | return entry; | |
2252 | } | |
252b5132 | 2253 | |
25dbc73a AM |
2254 | /* Call the allocation method of the superclass. */ |
2255 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2256 | if (entry != NULL) | |
2257 | { | |
2258 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2259 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2260 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 2261 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 2262 | } |
252b5132 | 2263 | |
25dbc73a | 2264 | return entry; |
252b5132 | 2265 | } |
3dab13f6 | 2266 | |
25dbc73a | 2267 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2268 | |
25dbc73a AM |
2269 | static struct bfd_link_hash_table * |
2270 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2271 | { |
25dbc73a | 2272 | struct ppc_elf_link_hash_table *ret; |
76e7a751 | 2273 | static struct ppc_elf_params default_params |
407aa07c | 2274 | = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 }; |
3dab13f6 | 2275 | |
25dbc73a AM |
2276 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2277 | if (ret == NULL) | |
2278 | return NULL; | |
3dab13f6 | 2279 | |
66eb6687 AM |
2280 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2281 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
2282 | sizeof (struct ppc_elf_link_hash_entry), |
2283 | PPC32_ELF_DATA)) | |
3dab13f6 | 2284 | { |
25dbc73a AM |
2285 | free (ret); |
2286 | return NULL; | |
2287 | } | |
58111eb7 | 2288 | |
a6aa5195 AM |
2289 | ret->elf.init_plt_refcount.refcount = 0; |
2290 | ret->elf.init_plt_refcount.glist = NULL; | |
2291 | ret->elf.init_plt_offset.offset = 0; | |
2292 | ret->elf.init_plt_offset.glist = NULL; | |
2293 | ||
db434ba0 AM |
2294 | ret->params = &default_params; |
2295 | ||
c9a2f333 AM |
2296 | ret->sdata[0].name = ".sdata"; |
2297 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2298 | ret->sdata[0].bss_name = ".sbss"; | |
2299 | ||
2300 | ret->sdata[1].name = ".sdata2"; | |
2301 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2302 | ret->sdata[1].bss_name = ".sbss2"; | |
2303 | ||
9d8504b1 PB |
2304 | ret->plt_entry_size = 12; |
2305 | ret->plt_slot_size = 8; | |
2306 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 2307 | |
25dbc73a AM |
2308 | return &ret->elf.root; |
2309 | } | |
3dab13f6 | 2310 | |
5446cbdf AM |
2311 | /* Hook linker params into hash table. */ |
2312 | ||
2313 | void | |
2314 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
2315 | { | |
2316 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
2317 | ||
2318 | if (htab) | |
2319 | htab->params = params; | |
76e7a751 | 2320 | params->pagesize_p2 = bfd_log2 (params->pagesize); |
5446cbdf AM |
2321 | } |
2322 | ||
9d8504b1 | 2323 | /* Create .got and the related sections. */ |
3dab13f6 | 2324 | |
25dbc73a AM |
2325 | static bfd_boolean |
2326 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2327 | { | |
2328 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2329 | |
25dbc73a AM |
2330 | if (!_bfd_elf_create_got_section (abfd, info)) |
2331 | return FALSE; | |
3dab13f6 | 2332 | |
25dbc73a | 2333 | htab = ppc_elf_hash_table (info); |
ce558b89 | 2334 | if (!htab->is_vxworks) |
9d8504b1 PB |
2335 | { |
2336 | /* The powerpc .got has a blrl instruction in it. Mark it | |
2337 | executable. */ | |
ce558b89 AM |
2338 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS |
2339 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2340 | if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags)) | |
9d8504b1 PB |
2341 | return FALSE; |
2342 | } | |
3dab13f6 | 2343 | |
25dbc73a AM |
2344 | return TRUE; |
2345 | } | |
3dab13f6 | 2346 | |
93d1b056 AM |
2347 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
2348 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
2349 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
2350 | ||
2351 | static bfd_boolean | |
2352 | ppc_elf_create_linker_section (bfd *abfd, | |
2353 | struct bfd_link_info *info, | |
2354 | flagword flags, | |
2355 | elf_linker_section_t *lsect) | |
2356 | { | |
2357 | asection *s; | |
2358 | ||
2359 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2360 | | SEC_LINKER_CREATED); | |
2361 | ||
2362 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
2363 | if (s == NULL) | |
2364 | return FALSE; | |
2365 | lsect->section = s; | |
2366 | ||
2367 | /* Define the sym on the first section of this name. */ | |
2368 | s = bfd_get_section_by_name (abfd, lsect->name); | |
2369 | ||
2370 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
2371 | if (lsect->sym == NULL) | |
2372 | return FALSE; | |
2373 | lsect->sym->root.u.def.value = 0x8000; | |
2374 | return TRUE; | |
2375 | } | |
2376 | ||
e054468f AM |
2377 | static bfd_boolean |
2378 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
2379 | { | |
2380 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
2381 | asection *s; | |
2382 | flagword flags; | |
691d2e9a | 2383 | int p2align; |
e054468f AM |
2384 | |
2385 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
2386 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2387 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
2388 | htab->glink = s; | |
691d2e9a AM |
2389 | p2align = htab->params->ppc476_workaround ? 6 : 4; |
2390 | if (p2align < htab->params->plt_stub_align) | |
2391 | p2align = htab->params->plt_stub_align; | |
e054468f | 2392 | if (s == NULL |
691d2e9a | 2393 | || !bfd_set_section_alignment (abfd, s, p2align)) |
e054468f AM |
2394 | return FALSE; |
2395 | ||
6177242a AM |
2396 | if (!info->no_ld_generated_unwind_info) |
2397 | { | |
2398 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
2399 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2400 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
2401 | htab->glink_eh_frame = s; | |
2402 | if (s == NULL | |
2403 | || !bfd_set_section_alignment (abfd, s, 2)) | |
2404 | return FALSE; | |
2405 | } | |
2406 | ||
e054468f AM |
2407 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
2408 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
ce558b89 | 2409 | htab->elf.iplt = s; |
e054468f AM |
2410 | if (s == NULL |
2411 | || !bfd_set_section_alignment (abfd, s, 4)) | |
2412 | return FALSE; | |
2413 | ||
2414 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
2415 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 2416 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
ce558b89 | 2417 | htab->elf.irelplt = s; |
e054468f AM |
2418 | if (s == NULL |
2419 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
2420 | return FALSE; | |
93d1b056 | 2421 | |
2d7ad24e AM |
2422 | /* Local plt entries. */ |
2423 | flags = (SEC_ALLOC | SEC_LOAD | |
2424 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2425 | htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt", | |
2426 | flags); | |
2427 | if (htab->pltlocal == NULL | |
2428 | || ! bfd_set_section_alignment (abfd, htab->pltlocal, 2)) | |
2429 | return FALSE; | |
2430 | ||
2431 | if (bfd_link_pic (info)) | |
2432 | { | |
2433 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
2434 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2435 | htab->relpltlocal | |
2436 | = bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags); | |
2437 | if (htab->relpltlocal == NULL | |
2438 | || ! bfd_set_section_alignment (abfd, htab->relpltlocal, 2)) | |
2439 | return FALSE; | |
2440 | } | |
2441 | ||
93d1b056 AM |
2442 | if (!ppc_elf_create_linker_section (abfd, info, 0, |
2443 | &htab->sdata[0])) | |
2444 | return FALSE; | |
2445 | ||
2446 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
2447 | &htab->sdata[1])) | |
2448 | return FALSE; | |
2449 | ||
e054468f AM |
2450 | return TRUE; |
2451 | } | |
2452 | ||
25dbc73a AM |
2453 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2454 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2455 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2456 | |
25dbc73a AM |
2457 | static bfd_boolean |
2458 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2459 | { | |
2460 | struct ppc_elf_link_hash_table *htab; | |
2461 | asection *s; | |
2462 | flagword flags; | |
3dab13f6 | 2463 | |
25dbc73a | 2464 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2465 | |
ce558b89 | 2466 | if (htab->elf.sgot == NULL |
25dbc73a | 2467 | && !ppc_elf_create_got (abfd, info)) |
3dab13f6 AM |
2468 | return FALSE; |
2469 | ||
25dbc73a AM |
2470 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2471 | return FALSE; | |
3dab13f6 | 2472 | |
e054468f AM |
2473 | if (htab->glink == NULL |
2474 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 2475 | return FALSE; |
3dab13f6 | 2476 | |
14b2f831 AM |
2477 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
2478 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 2479 | htab->dynsbss = s; |
3496cb2a | 2480 | if (s == NULL) |
25dbc73a | 2481 | return FALSE; |
3dab13f6 | 2482 | |
0e1862bb | 2483 | if (! bfd_link_pic (info)) |
25dbc73a | 2484 | { |
e054468f AM |
2485 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
2486 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 2487 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 2488 | htab->relsbss = s; |
25dbc73a | 2489 | if (s == NULL |
25dbc73a AM |
2490 | || ! bfd_set_section_alignment (abfd, s, 2)) |
2491 | return FALSE; | |
2492 | } | |
3dab13f6 | 2493 | |
711de32c RS |
2494 | if (htab->is_vxworks |
2495 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
2496 | return FALSE; | |
9d8504b1 | 2497 | |
ce558b89 | 2498 | s = htab->elf.splt; |
3b36f7e6 | 2499 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
2500 | if (htab->plt_type == PLT_VXWORKS) |
2501 | /* The VxWorks PLT is a loaded section with contents. */ | |
2502 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
25dbc73a AM |
2503 | return bfd_set_section_flags (abfd, s, flags); |
2504 | } | |
3dab13f6 | 2505 | |
25dbc73a | 2506 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2507 | |
25dbc73a | 2508 | static void |
fcfa13d2 | 2509 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
2510 | struct elf_link_hash_entry *dir, |
2511 | struct elf_link_hash_entry *ind) | |
2512 | { | |
2513 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2514 | |
25dbc73a AM |
2515 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2516 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2517 | |
c79d6685 AM |
2518 | edir->tls_mask |= eind->tls_mask; |
2519 | edir->has_sda_refs |= eind->has_sda_refs; | |
2520 | ||
e81830c5 AM |
2521 | if (edir->elf.versioned != versioned_hidden) |
2522 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
c79d6685 AM |
2523 | edir->elf.ref_regular |= eind->elf.ref_regular; |
2524 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 2525 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
c79d6685 AM |
2526 | edir->elf.needs_plt |= eind->elf.needs_plt; |
2527 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
2528 | ||
287c7eaf AM |
2529 | /* If we were called to copy over info for a weak sym, that's all. */ |
2530 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
2531 | return; | |
2532 | ||
25dbc73a AM |
2533 | if (eind->dyn_relocs != NULL) |
2534 | { | |
2535 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 2536 | { |
6061a67d AM |
2537 | struct elf_dyn_relocs **pp; |
2538 | struct elf_dyn_relocs *p; | |
3dab13f6 | 2539 | |
fcfa13d2 | 2540 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
2541 | list. Merge any entries against the same section. */ |
2542 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 2543 | { |
6061a67d | 2544 | struct elf_dyn_relocs *q; |
25dbc73a AM |
2545 | |
2546 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2547 | if (q->sec == p->sec) | |
2548 | { | |
2549 | q->pc_count += p->pc_count; | |
2550 | q->count += p->count; | |
2551 | *pp = p->next; | |
2552 | break; | |
2553 | } | |
2554 | if (q == NULL) | |
2555 | pp = &p->next; | |
3dab13f6 | 2556 | } |
25dbc73a | 2557 | *pp = edir->dyn_relocs; |
3dab13f6 | 2558 | } |
25dbc73a AM |
2559 | |
2560 | edir->dyn_relocs = eind->dyn_relocs; | |
2561 | eind->dyn_relocs = NULL; | |
3dab13f6 | 2562 | } |
3dab13f6 | 2563 | |
a6aa5195 AM |
2564 | /* Copy over the GOT refcount entries that we may have already seen to |
2565 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
2566 | edir->elf.got.refcount += eind->elf.got.refcount; |
2567 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
2568 | |
2569 | /* And plt entries. */ | |
2570 | if (eind->elf.plt.plist != NULL) | |
2571 | { | |
2572 | if (edir->elf.plt.plist != NULL) | |
2573 | { | |
2574 | struct plt_entry **entp; | |
2575 | struct plt_entry *ent; | |
2576 | ||
2577 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
2578 | { | |
2579 | struct plt_entry *dent; | |
2580 | ||
2581 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
2582 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
2583 | { | |
2584 | dent->plt.refcount += ent->plt.refcount; | |
2585 | *entp = ent->next; | |
2586 | break; | |
2587 | } | |
2588 | if (dent == NULL) | |
2589 | entp = &ent->next; | |
2590 | } | |
2591 | *entp = edir->elf.plt.plist; | |
2592 | } | |
2593 | ||
2594 | edir->elf.plt.plist = eind->elf.plt.plist; | |
2595 | eind->elf.plt.plist = NULL; | |
2596 | } | |
2597 | ||
fcfa13d2 | 2598 | if (eind->elf.dynindx != -1) |
25dbc73a | 2599 | { |
fcfa13d2 AM |
2600 | if (edir->elf.dynindx != -1) |
2601 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
2602 | edir->elf.dynstr_index); | |
a6aa5195 AM |
2603 | edir->elf.dynindx = eind->elf.dynindx; |
2604 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
2605 | eind->elf.dynindx = -1; | |
2606 | eind->elf.dynstr_index = 0; | |
25dbc73a | 2607 | } |
25dbc73a | 2608 | } |
3dab13f6 | 2609 | |
25dbc73a AM |
2610 | /* Hook called by the linker routine which adds symbols from an object |
2611 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 2612 | |
25dbc73a AM |
2613 | static bfd_boolean |
2614 | ppc_elf_add_symbol_hook (bfd *abfd, | |
2615 | struct bfd_link_info *info, | |
2616 | Elf_Internal_Sym *sym, | |
2617 | const char **namep ATTRIBUTE_UNUSED, | |
2618 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2619 | asection **secp, | |
2620 | bfd_vma *valp) | |
2621 | { | |
2622 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 2623 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
2624 | && is_ppc_elf (info->output_bfd) |
2625 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
2626 | { |
2627 | /* Common symbols less than or equal to -G nn bytes are automatically | |
2628 | put into .sbss. */ | |
2629 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2630 | |
25dbc73a AM |
2631 | htab = ppc_elf_hash_table (info); |
2632 | if (htab->sbss == NULL) | |
2633 | { | |
644285ef | 2634 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 2635 | |
644285ef AM |
2636 | if (!htab->elf.dynobj) |
2637 | htab->elf.dynobj = abfd; | |
2638 | ||
3496cb2a L |
2639 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2640 | ".sbss", | |
2641 | flags); | |
2642 | if (htab->sbss == NULL) | |
25dbc73a | 2643 | return FALSE; |
3dab13f6 | 2644 | } |
3dab13f6 | 2645 | |
25dbc73a AM |
2646 | *secp = htab->sbss; |
2647 | *valp = sym->st_size; | |
2648 | } | |
3dab13f6 | 2649 | |
25dbc73a | 2650 | return TRUE; |
3dab13f6 AM |
2651 | } |
2652 | \f | |
25dbc73a AM |
2653 | /* Find a linker generated pointer with a given addend and type. */ |
2654 | ||
2655 | static elf_linker_section_pointers_t * | |
2656 | elf_find_pointer_linker_section | |
2657 | (elf_linker_section_pointers_t *linker_pointers, | |
2658 | bfd_vma addend, | |
2659 | elf_linker_section_t *lsect) | |
252b5132 | 2660 | { |
25dbc73a AM |
2661 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
2662 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
2663 | return linker_pointers; | |
252b5132 | 2664 | |
25dbc73a AM |
2665 | return NULL; |
2666 | } | |
2667 | ||
2668 | /* Allocate a pointer to live in a linker created section. */ | |
2669 | ||
2670 | static bfd_boolean | |
93d1b056 AM |
2671 | elf_allocate_pointer_linker_section (bfd *abfd, |
2672 | elf_linker_section_t *lsect, | |
2673 | struct elf_link_hash_entry *h, | |
2674 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
2675 | { |
2676 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2677 | elf_linker_section_pointers_t *linker_section_ptr; | |
2678 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2679 | bfd_size_type amt; | |
2680 | ||
2681 | BFD_ASSERT (lsect != NULL); | |
2682 | ||
2683 | /* Is this a global symbol? */ | |
2684 | if (h != NULL) | |
2685 | { | |
2686 | struct ppc_elf_link_hash_entry *eh; | |
2687 | ||
2688 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2689 | eh = (struct ppc_elf_link_hash_entry *) h; | |
2690 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
2691 | rel->r_addend, | |
2692 | lsect)) | |
2693 | return TRUE; | |
2694 | ||
2695 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
2696 | } |
2697 | else | |
2698 | { | |
0c8d6e5c | 2699 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 2700 | |
25dbc73a AM |
2701 | /* Allocation of a pointer to a local symbol. */ |
2702 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2703 | ||
2704 | /* Allocate a table to hold the local symbols if first time. */ | |
2705 | if (!ptr) | |
2706 | { | |
0ffa91dd | 2707 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
2708 | |
2709 | amt = num_symbols; | |
2710 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2711 | ptr = bfd_zalloc (abfd, amt); | |
2712 | ||
2713 | if (!ptr) | |
2714 | return FALSE; | |
2715 | ||
2716 | elf_local_ptr_offsets (abfd) = ptr; | |
2717 | } | |
2718 | ||
2719 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2720 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2721 | rel->r_addend, | |
2722 | lsect)) | |
2723 | return TRUE; | |
252b5132 | 2724 | |
25dbc73a | 2725 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 2726 | } |
41fcb14e | 2727 | |
25dbc73a AM |
2728 | /* Allocate space for a pointer in the linker section, and allocate |
2729 | a new pointer record from internal memory. */ | |
2730 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2731 | amt = sizeof (elf_linker_section_pointers_t); | |
2732 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 2733 | |
25dbc73a | 2734 | if (!linker_section_ptr) |
7619e7c7 | 2735 | return FALSE; |
41fcb14e | 2736 | |
25dbc73a AM |
2737 | linker_section_ptr->next = *ptr_linker_section_ptr; |
2738 | linker_section_ptr->addend = rel->r_addend; | |
2739 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 2740 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 2741 | |
93d1b056 AM |
2742 | if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2)) |
2743 | return FALSE; | |
25dbc73a AM |
2744 | linker_section_ptr->offset = lsect->section->size; |
2745 | lsect->section->size += 4; | |
7619e7c7 | 2746 | |
25dbc73a AM |
2747 | #ifdef DEBUG |
2748 | fprintf (stderr, | |
2749 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2750 | lsect->name, (long) linker_section_ptr->offset, | |
2751 | (long) lsect->section->size); | |
2752 | #endif | |
7619e7c7 AM |
2753 | |
2754 | return TRUE; | |
41fcb14e AM |
2755 | } |
2756 | ||
e054468f | 2757 | static struct plt_entry ** |
25dbc73a AM |
2758 | update_local_sym_info (bfd *abfd, |
2759 | Elf_Internal_Shdr *symtab_hdr, | |
2760 | unsigned long r_symndx, | |
2761 | int tls_type) | |
252b5132 | 2762 | { |
25dbc73a | 2763 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 2764 | struct plt_entry **local_plt; |
bac3c8c5 | 2765 | unsigned char *local_got_tls_masks; |
252b5132 | 2766 | |
25dbc73a | 2767 | if (local_got_refcounts == NULL) |
252b5132 | 2768 | { |
25dbc73a AM |
2769 | bfd_size_type size = symtab_hdr->sh_info; |
2770 | ||
e054468f AM |
2771 | size *= (sizeof (*local_got_refcounts) |
2772 | + sizeof (*local_plt) | |
2773 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
2774 | local_got_refcounts = bfd_zalloc (abfd, size); |
2775 | if (local_got_refcounts == NULL) | |
e054468f | 2776 | return NULL; |
25dbc73a | 2777 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 2778 | } |
41fcb14e | 2779 | |
e054468f | 2780 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
bac3c8c5 | 2781 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 AM |
2782 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
2783 | if ((tls_type & NON_GOT) == 0) | |
e054468f AM |
2784 | local_got_refcounts[r_symndx] += 1; |
2785 | return local_plt + r_symndx; | |
25dbc73a | 2786 | } |
41fcb14e | 2787 | |
a6aa5195 | 2788 | static bfd_boolean |
3ec01793 | 2789 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
2790 | asection *sec, bfd_vma addend) |
2791 | { | |
2792 | struct plt_entry *ent; | |
2793 | ||
32af9f6e AM |
2794 | if (addend < 32768) |
2795 | sec = NULL; | |
3ec01793 | 2796 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
2797 | if (ent->sec == sec && ent->addend == addend) |
2798 | break; | |
2799 | if (ent == NULL) | |
2800 | { | |
2801 | bfd_size_type amt = sizeof (*ent); | |
2802 | ent = bfd_alloc (abfd, amt); | |
2803 | if (ent == NULL) | |
2804 | return FALSE; | |
3ec01793 | 2805 | ent->next = *plist; |
a6aa5195 AM |
2806 | ent->sec = sec; |
2807 | ent->addend = addend; | |
2808 | ent->plt.refcount = 0; | |
3ec01793 | 2809 | *plist = ent; |
a6aa5195 AM |
2810 | } |
2811 | ent->plt.refcount += 1; | |
2812 | return TRUE; | |
2813 | } | |
2814 | ||
2815 | static struct plt_entry * | |
3ec01793 | 2816 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
2817 | { |
2818 | struct plt_entry *ent; | |
2819 | ||
2820 | if (addend < 32768) | |
2821 | sec = NULL; | |
3ec01793 | 2822 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
2823 | if (ent->sec == sec && ent->addend == addend) |
2824 | break; | |
2825 | return ent; | |
2826 | } | |
2827 | ||
e054468f AM |
2828 | static bfd_boolean |
2829 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
2830 | { | |
2831 | return (r_type == R_PPC_PLTREL24 | |
2832 | || r_type == R_PPC_LOCAL24PC | |
2833 | || r_type == R_PPC_REL24 | |
2834 | || r_type == R_PPC_REL14 | |
2835 | || r_type == R_PPC_REL14_BRTAKEN | |
2836 | || r_type == R_PPC_REL14_BRNTAKEN | |
2837 | || r_type == R_PPC_ADDR24 | |
2838 | || r_type == R_PPC_ADDR14 | |
2839 | || r_type == R_PPC_ADDR14_BRTAKEN | |
dfdaec14 AJ |
2840 | || r_type == R_PPC_ADDR14_BRNTAKEN |
2841 | || r_type == R_PPC_VLE_REL24); | |
e054468f AM |
2842 | } |
2843 | ||
23cedd1d AM |
2844 | /* Relocs on inline plt call sequence insns prior to the call. */ |
2845 | ||
2846 | static bfd_boolean | |
2847 | is_plt_seq_reloc (enum elf_ppc_reloc_type r_type) | |
2848 | { | |
2849 | return (r_type == R_PPC_PLT16_HA | |
2850 | || r_type == R_PPC_PLT16_HI | |
2851 | || r_type == R_PPC_PLT16_LO | |
2852 | || r_type == R_PPC_PLTSEQ); | |
2853 | } | |
2854 | ||
25dbc73a AM |
2855 | static void |
2856 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
2857 | { | |
4eca0228 | 2858 | _bfd_error_handler |
695344c0 | 2859 | /* xgettext:c-format */ |
871b3ab2 | 2860 | (_("%pB: relocation %s cannot be used when making a shared object"), |
25dbc73a AM |
2861 | abfd, |
2862 | ppc_elf_howto_table[r_type]->name); | |
2863 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
2864 | } |
2865 | ||
25dbc73a AM |
2866 | /* Look through the relocs for a section during the first phase, and |
2867 | allocate space in the global offset table or procedure linkage | |
2868 | table. */ | |
252b5132 | 2869 | |
b34976b6 | 2870 | static bfd_boolean |
25dbc73a AM |
2871 | ppc_elf_check_relocs (bfd *abfd, |
2872 | struct bfd_link_info *info, | |
2873 | asection *sec, | |
2874 | const Elf_Internal_Rela *relocs) | |
252b5132 | 2875 | { |
7619e7c7 | 2876 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
2877 | Elf_Internal_Shdr *symtab_hdr; |
2878 | struct elf_link_hash_entry **sym_hashes; | |
2879 | const Elf_Internal_Rela *rel; | |
2880 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 2881 | asection *got2, *sreloc; |
727fc41e | 2882 | struct elf_link_hash_entry *tga; |
25dbc73a | 2883 | |
0e1862bb | 2884 | if (bfd_link_relocatable (info)) |
25dbc73a | 2885 | return TRUE; |
252b5132 | 2886 | |
c87b5a93 AM |
2887 | /* Don't do anything special with non-loaded, non-alloced sections. |
2888 | In particular, any relocs in such sections should not affect GOT | |
2889 | and PLT reference counting (ie. we don't allow them to create GOT | |
2890 | or PLT entries), there's no possibility or desire to optimize TLS | |
2891 | relocs, and there's not much point in propagating relocs to shared | |
2892 | libs that the dynamic linker won't relocate. */ | |
2893 | if ((sec->flags & SEC_ALLOC) == 0) | |
2894 | return TRUE; | |
2895 | ||
252b5132 | 2896 | #ifdef DEBUG |
871b3ab2 | 2897 | _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB", |
25dbc73a | 2898 | sec, abfd); |
252b5132 RH |
2899 | #endif |
2900 | ||
0c8d6e5c | 2901 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 2902 | |
25dbc73a AM |
2903 | /* Initialize howto table if not already done. */ |
2904 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2905 | ppc_elf_howto_init (); | |
2906 | ||
7619e7c7 | 2907 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
2908 | if (htab->glink == NULL) |
2909 | { | |
2910 | if (htab->elf.dynobj == NULL) | |
2911 | htab->elf.dynobj = abfd; | |
2912 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
2913 | return FALSE; | |
2914 | } | |
727fc41e AM |
2915 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
2916 | FALSE, FALSE, TRUE); | |
0ffa91dd | 2917 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 2918 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 2919 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
2920 | sreloc = NULL; |
2921 | ||
2922 | rel_end = relocs + sec->reloc_count; | |
2923 | for (rel = relocs; rel < rel_end; rel++) | |
2924 | { | |
2925 | unsigned long r_symndx; | |
2926 | enum elf_ppc_reloc_type r_type; | |
2927 | struct elf_link_hash_entry *h; | |
727fc41e | 2928 | int tls_type; |
cbf95972 | 2929 | struct plt_entry **ifunc; |
2d7ad24e AM |
2930 | struct plt_entry **pltent; |
2931 | bfd_vma addend; | |
25dbc73a AM |
2932 | |
2933 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2934 | if (r_symndx < symtab_hdr->sh_info) | |
2935 | h = NULL; | |
2936 | else | |
973a3492 L |
2937 | { |
2938 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2939 | while (h->root.type == bfd_link_hash_indirect | |
2940 | || h->root.type == bfd_link_hash_warning) | |
2941 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2942 | } | |
25dbc73a AM |
2943 | |
2944 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
2945 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
2946 | startup code. */ | |
3b36f7e6 | 2947 | if (h != NULL |
ce558b89 | 2948 | && htab->elf.sgot == NULL |
3b36f7e6 | 2949 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 | 2950 | { |
3b36f7e6 AM |
2951 | if (htab->elf.dynobj == NULL) |
2952 | htab->elf.dynobj = abfd; | |
2953 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
2954 | return FALSE; | |
2955 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 2956 | } |
252b5132 | 2957 | |
727fc41e | 2958 | tls_type = 0; |
de972ffa | 2959 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 2960 | ifunc = NULL; |
06a162cf | 2961 | if (h == NULL && !htab->is_vxworks) |
e054468f | 2962 | { |
06a162cf AM |
2963 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
2964 | abfd, r_symndx); | |
2965 | if (isym == NULL) | |
2966 | return FALSE; | |
2967 | ||
0bed072f | 2968 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 2969 | { |
0bed072f | 2970 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf | 2971 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
37da22e5 | 2972 | NON_GOT | PLT_IFUNC); |
06a162cf | 2973 | if (ifunc == NULL) |
e054468f AM |
2974 | return FALSE; |
2975 | ||
06a162cf AM |
2976 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
2977 | In a non-pie executable even when there are | |
2978 | no plt calls. */ | |
0e1862bb | 2979 | if (!bfd_link_pic (info) |
08be3224 AM |
2980 | || is_branch_reloc (r_type) |
2981 | || r_type == R_PPC_PLT16_LO | |
2982 | || r_type == R_PPC_PLT16_HI | |
2983 | || r_type == R_PPC_PLT16_HA) | |
e054468f | 2984 | { |
2d7ad24e | 2985 | addend = 0; |
0bed072f | 2986 | if (r_type == R_PPC_PLTREL24) |
08be3224 AM |
2987 | ppc_elf_tdata (abfd)->makes_plt_call = 1; |
2988 | if (bfd_link_pic (info) | |
2989 | && (r_type == R_PPC_PLTREL24 | |
2990 | || r_type == R_PPC_PLT16_LO | |
2991 | || r_type == R_PPC_PLT16_HI | |
2992 | || r_type == R_PPC_PLT16_HA)) | |
2993 | addend = rel->r_addend; | |
0bed072f AM |
2994 | if (!update_plt_info (abfd, ifunc, got2, addend)) |
2995 | return FALSE; | |
e054468f AM |
2996 | } |
2997 | } | |
25f23106 AM |
2998 | } |
2999 | ||
de972ffa AM |
3000 | if (!htab->is_vxworks |
3001 | && is_branch_reloc (r_type) | |
3002 | && h != NULL | |
3003 | && h == tga) | |
25f23106 | 3004 | { |
de972ffa AM |
3005 | if (rel != relocs |
3006 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
3007 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
3008 | /* We have a new-style __tls_get_addr call with a marker | |
3009 | reloc. */ | |
3010 | ; | |
3011 | else | |
3012 | /* Mark this section as having an old-style call. */ | |
3013 | sec->has_tls_get_addr_call = 1; | |
e054468f | 3014 | } |
727fc41e | 3015 | |
25dbc73a AM |
3016 | switch (r_type) |
3017 | { | |
727fc41e AM |
3018 | case R_PPC_TLSGD: |
3019 | case R_PPC_TLSLD: | |
3020 | /* These special tls relocs tie a call to __tls_get_addr with | |
3021 | its parameter symbol. */ | |
37da22e5 AM |
3022 | if (h != NULL) |
3023 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; | |
3024 | else | |
3025 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
3026 | NON_GOT | TLS_TLS | TLS_MARK)) | |
3027 | return FALSE; | |
727fc41e AM |
3028 | break; |
3029 | ||
23cedd1d AM |
3030 | case R_PPC_PLTSEQ: |
3031 | break; | |
3032 | ||
25dbc73a AM |
3033 | case R_PPC_GOT_TLSLD16: |
3034 | case R_PPC_GOT_TLSLD16_LO: | |
3035 | case R_PPC_GOT_TLSLD16_HI: | |
3036 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
3037 | tls_type = TLS_TLS | TLS_LD; |
3038 | goto dogottls; | |
252b5132 | 3039 | |
25dbc73a AM |
3040 | case R_PPC_GOT_TLSGD16: |
3041 | case R_PPC_GOT_TLSGD16_LO: | |
3042 | case R_PPC_GOT_TLSGD16_HI: | |
3043 | case R_PPC_GOT_TLSGD16_HA: | |
3044 | tls_type = TLS_TLS | TLS_GD; | |
3045 | goto dogottls; | |
3046 | ||
3047 | case R_PPC_GOT_TPREL16: | |
3048 | case R_PPC_GOT_TPREL16_LO: | |
3049 | case R_PPC_GOT_TPREL16_HI: | |
3050 | case R_PPC_GOT_TPREL16_HA: | |
7c8bbca5 | 3051 | if (bfd_link_dll (info)) |
25dbc73a AM |
3052 | info->flags |= DF_STATIC_TLS; |
3053 | tls_type = TLS_TLS | TLS_TPREL; | |
3054 | goto dogottls; | |
3055 | ||
3056 | case R_PPC_GOT_DTPREL16: | |
3057 | case R_PPC_GOT_DTPREL16_LO: | |
3058 | case R_PPC_GOT_DTPREL16_HI: | |
3059 | case R_PPC_GOT_DTPREL16_HA: | |
3060 | tls_type = TLS_TLS | TLS_DTPREL; | |
3061 | dogottls: | |
3062 | sec->has_tls_reloc = 1; | |
1a0670f3 | 3063 | /* Fall through. */ |
252b5132 | 3064 | |
25dbc73a AM |
3065 | /* GOT16 relocations */ |
3066 | case R_PPC_GOT16: | |
3067 | case R_PPC_GOT16_LO: | |
3068 | case R_PPC_GOT16_HI: | |
3069 | case R_PPC_GOT16_HA: | |
3070 | /* This symbol requires a global offset table entry. */ | |
ce558b89 | 3071 | if (htab->elf.sgot == NULL) |
25dbc73a AM |
3072 | { |
3073 | if (htab->elf.dynobj == NULL) | |
3074 | htab->elf.dynobj = abfd; | |
3075 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3076 | return FALSE; | |
3077 | } | |
3078 | if (h != NULL) | |
3079 | { | |
3080 | h->got.refcount += 1; | |
3081 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
3082 | } | |
3083 | else | |
3084 | /* This is a global offset table entry for a local symbol. */ | |
3085 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3086 | return FALSE; | |
91e21fb7 AM |
3087 | |
3088 | /* We may also need a plt entry if the symbol turns out to be | |
3089 | an ifunc. */ | |
0e1862bb | 3090 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
3091 | { |
3092 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
3093 | return FALSE; | |
3094 | } | |
25dbc73a | 3095 | break; |
252b5132 | 3096 | |
25dbc73a AM |
3097 | /* Indirect .sdata relocation. */ |
3098 | case R_PPC_EMB_SDAI16: | |
0e1862bb | 3099 | if (bfd_link_pic (info)) |
25dbc73a AM |
3100 | { |
3101 | bad_shared_reloc (abfd, r_type); | |
3102 | return FALSE; | |
3103 | } | |
93d1b056 AM |
3104 | htab->sdata[0].sym->ref_regular = 1; |
3105 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
3106 | h, rel)) | |
25dbc73a | 3107 | return FALSE; |
046183de AM |
3108 | if (h != NULL) |
3109 | { | |
3110 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3111 | h->non_got_ref = TRUE; | |
3112 | } | |
25dbc73a | 3113 | break; |
252b5132 | 3114 | |
25dbc73a AM |
3115 | /* Indirect .sdata2 relocation. */ |
3116 | case R_PPC_EMB_SDA2I16: | |
0e1862bb | 3117 | if (bfd_link_pic (info)) |
25dbc73a AM |
3118 | { |
3119 | bad_shared_reloc (abfd, r_type); | |
3120 | return FALSE; | |
3121 | } | |
93d1b056 AM |
3122 | htab->sdata[1].sym->ref_regular = 1; |
3123 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
3124 | h, rel)) | |
25dbc73a | 3125 | return FALSE; |
046183de AM |
3126 | if (h != NULL) |
3127 | { | |
3128 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3129 | h->non_got_ref = TRUE; | |
3130 | } | |
25dbc73a | 3131 | break; |
252b5132 | 3132 | |
93d1b056 AM |
3133 | case R_PPC_SDAREL16: |
3134 | htab->sdata[0].sym->ref_regular = 1; | |
1a0670f3 | 3135 | /* Fall through. */ |
93d1b056 | 3136 | |
b9c361e0 JL |
3137 | case R_PPC_VLE_SDAREL_LO16A: |
3138 | case R_PPC_VLE_SDAREL_LO16D: | |
3139 | case R_PPC_VLE_SDAREL_HI16A: | |
3140 | case R_PPC_VLE_SDAREL_HI16D: | |
3141 | case R_PPC_VLE_SDAREL_HA16A: | |
3142 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
3143 | if (h != NULL) |
3144 | { | |
3145 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3146 | h->non_got_ref = TRUE; | |
3147 | } | |
3148 | break; | |
3149 | ||
b9c361e0 JL |
3150 | case R_PPC_VLE_REL8: |
3151 | case R_PPC_VLE_REL15: | |
3152 | case R_PPC_VLE_REL24: | |
3153 | case R_PPC_VLE_LO16A: | |
3154 | case R_PPC_VLE_LO16D: | |
3155 | case R_PPC_VLE_HI16A: | |
3156 | case R_PPC_VLE_HI16D: | |
3157 | case R_PPC_VLE_HA16A: | |
3158 | case R_PPC_VLE_HA16D: | |
83eef883 | 3159 | case R_PPC_VLE_ADDR20: |
b9c361e0 JL |
3160 | break; |
3161 | ||
25dbc73a | 3162 | case R_PPC_EMB_SDA2REL: |
0e1862bb | 3163 | if (bfd_link_pic (info)) |
046183de AM |
3164 | { |
3165 | bad_shared_reloc (abfd, r_type); | |
3166 | return FALSE; | |
3167 | } | |
93d1b056 | 3168 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
3169 | if (h != NULL) |
3170 | { | |
3171 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3172 | h->non_got_ref = TRUE; | |
3173 | } | |
3174 | break; | |
3175 | ||
b9c361e0 JL |
3176 | case R_PPC_VLE_SDA21_LO: |
3177 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
3178 | case R_PPC_EMB_SDA21: |
3179 | case R_PPC_EMB_RELSDA: | |
0e1862bb | 3180 | if (bfd_link_pic (info)) |
046183de AM |
3181 | { |
3182 | bad_shared_reloc (abfd, r_type); | |
3183 | return FALSE; | |
3184 | } | |
046183de AM |
3185 | if (h != NULL) |
3186 | { | |
3187 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3188 | h->non_got_ref = TRUE; | |
3189 | } | |
3190 | break; | |
3191 | ||
25dbc73a AM |
3192 | case R_PPC_EMB_NADDR32: |
3193 | case R_PPC_EMB_NADDR16: | |
3194 | case R_PPC_EMB_NADDR16_LO: | |
3195 | case R_PPC_EMB_NADDR16_HI: | |
3196 | case R_PPC_EMB_NADDR16_HA: | |
0e1862bb | 3197 | if (bfd_link_pic (info)) |
25dbc73a AM |
3198 | { |
3199 | bad_shared_reloc (abfd, r_type); | |
3200 | return FALSE; | |
3201 | } | |
4dc4a9a5 | 3202 | if (h != NULL) |
046183de | 3203 | h->non_got_ref = TRUE; |
25dbc73a | 3204 | break; |
252b5132 | 3205 | |
25dbc73a | 3206 | case R_PPC_PLTREL24: |
de972ffa | 3207 | if (h == NULL) |
6d78d0b9 | 3208 | break; |
08be3224 | 3209 | ppc_elf_tdata (abfd)->makes_plt_call = 1; |
3e04d765 | 3210 | goto pltentry; |
08be3224 | 3211 | |
23cedd1d | 3212 | case R_PPC_PLTCALL: |
3e04d765 AM |
3213 | sec->has_pltcall = 1; |
3214 | /* Fall through. */ | |
3215 | ||
6d78d0b9 | 3216 | case R_PPC_PLT32: |
25dbc73a AM |
3217 | case R_PPC_PLTREL32: |
3218 | case R_PPC_PLT16_LO: | |
3219 | case R_PPC_PLT16_HI: | |
3220 | case R_PPC_PLT16_HA: | |
3e04d765 | 3221 | pltentry: |
25dbc73a AM |
3222 | #ifdef DEBUG |
3223 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3224 | #endif | |
cbf95972 | 3225 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
3226 | if (h == NULL) |
3227 | { | |
2d7ad24e AM |
3228 | pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
3229 | NON_GOT | PLT_KEEP); | |
3230 | if (pltent == NULL) | |
3231 | return FALSE; | |
25dbc73a | 3232 | } |
a6aa5195 AM |
3233 | else |
3234 | { | |
2d7ad24e AM |
3235 | if (r_type != R_PPC_PLTREL24) |
3236 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
a6aa5195 | 3237 | h->needs_plt = 1; |
2d7ad24e | 3238 | pltent = &h->plt.plist; |
a6aa5195 | 3239 | } |
2d7ad24e AM |
3240 | addend = 0; |
3241 | if (bfd_link_pic (info) | |
3242 | && (r_type == R_PPC_PLTREL24 | |
3243 | || r_type == R_PPC_PLT16_LO | |
3244 | || r_type == R_PPC_PLT16_HI | |
3245 | || r_type == R_PPC_PLT16_HA)) | |
3246 | addend = rel->r_addend; | |
3247 | if (!update_plt_info (abfd, pltent, got2, addend)) | |
3248 | return FALSE; | |
25dbc73a | 3249 | break; |
ee05f2fe | 3250 | |
25dbc73a AM |
3251 | /* The following relocations don't need to propagate the |
3252 | relocation if linking a shared object since they are | |
3253 | section relative. */ | |
3254 | case R_PPC_SECTOFF: | |
3255 | case R_PPC_SECTOFF_LO: | |
3256 | case R_PPC_SECTOFF_HI: | |
3257 | case R_PPC_SECTOFF_HA: | |
3258 | case R_PPC_DTPREL16: | |
3259 | case R_PPC_DTPREL16_LO: | |
3260 | case R_PPC_DTPREL16_HI: | |
3261 | case R_PPC_DTPREL16_HA: | |
3262 | case R_PPC_TOC16: | |
3263 | break; | |
252b5132 | 3264 | |
d7128ce4 AM |
3265 | case R_PPC_REL16: |
3266 | case R_PPC_REL16_LO: | |
3267 | case R_PPC_REL16_HI: | |
3268 | case R_PPC_REL16_HA: | |
a680de9a | 3269 | case R_PPC_REL16DX_HA: |
016687f8 | 3270 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
3271 | break; |
3272 | ||
a6aa5195 | 3273 | /* These are just markers. */ |
25dbc73a AM |
3274 | case R_PPC_TLS: |
3275 | case R_PPC_EMB_MRKREF: | |
3276 | case R_PPC_NONE: | |
3277 | case R_PPC_max: | |
32af9f6e AM |
3278 | case R_PPC_RELAX: |
3279 | case R_PPC_RELAX_PLT: | |
3280 | case R_PPC_RELAX_PLTREL24: | |
7ba71655 | 3281 | case R_PPC_16DX_HA: |
25dbc73a | 3282 | break; |
252b5132 | 3283 | |
25dbc73a AM |
3284 | /* These should only appear in dynamic objects. */ |
3285 | case R_PPC_COPY: | |
3286 | case R_PPC_GLOB_DAT: | |
3287 | case R_PPC_JMP_SLOT: | |
3288 | case R_PPC_RELATIVE: | |
e054468f | 3289 | case R_PPC_IRELATIVE: |
25dbc73a | 3290 | break; |
252b5132 | 3291 | |
25dbc73a AM |
3292 | /* These aren't handled yet. We'll report an error later. */ |
3293 | case R_PPC_ADDR30: | |
3294 | case R_PPC_EMB_RELSEC16: | |
3295 | case R_PPC_EMB_RELST_LO: | |
3296 | case R_PPC_EMB_RELST_HI: | |
3297 | case R_PPC_EMB_RELST_HA: | |
3298 | case R_PPC_EMB_BIT_FLD: | |
3299 | break; | |
252b5132 | 3300 | |
25dbc73a AM |
3301 | /* This refers only to functions defined in the shared library. */ |
3302 | case R_PPC_LOCAL24PC: | |
727fc41e | 3303 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
3304 | { |
3305 | htab->plt_type = PLT_OLD; | |
3306 | htab->old_bfd = abfd; | |
3307 | } | |
c7e17e05 AM |
3308 | if (h != NULL && h->type == STT_GNU_IFUNC) |
3309 | { | |
c7e17e05 AM |
3310 | h->needs_plt = 1; |
3311 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
3312 | return FALSE; | |
3313 | } | |
25dbc73a | 3314 | break; |
252b5132 | 3315 | |
25dbc73a AM |
3316 | /* This relocation describes the C++ object vtable hierarchy. |
3317 | Reconstruct it for later use during GC. */ | |
3318 | case R_PPC_GNU_VTINHERIT: | |
3319 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3320 | return FALSE; | |
3321 | break; | |
252b5132 | 3322 | |
25dbc73a AM |
3323 | /* This relocation describes which C++ vtable entries are actually |
3324 | used. Record for later use during GC. */ | |
3325 | case R_PPC_GNU_VTENTRY: | |
a0ea3a14 | 3326 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
25dbc73a AM |
3327 | return FALSE; |
3328 | break; | |
252b5132 | 3329 | |
7c8bbca5 | 3330 | /* We shouldn't really be seeing TPREL32. */ |
25dbc73a | 3331 | case R_PPC_TPREL32: |
1d483afe AM |
3332 | case R_PPC_TPREL16: |
3333 | case R_PPC_TPREL16_LO: | |
3334 | case R_PPC_TPREL16_HI: | |
3335 | case R_PPC_TPREL16_HA: | |
7c8bbca5 | 3336 | if (bfd_link_dll (info)) |
25dbc73a AM |
3337 | info->flags |= DF_STATIC_TLS; |
3338 | goto dodyn; | |
252b5132 | 3339 | |
25dbc73a AM |
3340 | /* Nor these. */ |
3341 | case R_PPC_DTPMOD32: | |
3342 | case R_PPC_DTPREL32: | |
3343 | goto dodyn; | |
252b5132 | 3344 | |
9edfd1af AM |
3345 | case R_PPC_REL32: |
3346 | if (h == NULL | |
3347 | && got2 != NULL | |
3348 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 3349 | && bfd_link_pic (info) |
4a3dc543 | 3350 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
3351 | { |
3352 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
3353 | the start of a function, which assembles to a REL32 | |
3354 | reference to .got2. If we detect one of these, then | |
3355 | force the old PLT layout because the linker cannot | |
3356 | reliably deduce the GOT pointer value needed for | |
3357 | PLT call stubs. */ | |
3358 | asection *s; | |
87d72d41 | 3359 | Elf_Internal_Sym *isym; |
9edfd1af | 3360 | |
87d72d41 AM |
3361 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3362 | abfd, r_symndx); | |
3363 | if (isym == NULL) | |
3364 | return FALSE; | |
3365 | ||
3366 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 3367 | if (s == got2) |
016687f8 AM |
3368 | { |
3369 | htab->plt_type = PLT_OLD; | |
3370 | htab->old_bfd = abfd; | |
3371 | } | |
9edfd1af | 3372 | } |
7123df0e | 3373 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 3374 | break; |
625af618 AM |
3375 | /* fall through */ |
3376 | ||
3377 | case R_PPC_ADDR32: | |
3378 | case R_PPC_ADDR16: | |
3379 | case R_PPC_ADDR16_LO: | |
3380 | case R_PPC_ADDR16_HI: | |
3381 | case R_PPC_ADDR16_HA: | |
3382 | case R_PPC_UADDR32: | |
3383 | case R_PPC_UADDR16: | |
0e1862bb | 3384 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
3385 | { |
3386 | /* We may need a plt entry if the symbol turns out to be | |
3387 | a function defined in a dynamic object. */ | |
3ec01793 | 3388 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
3389 | return FALSE; |
3390 | ||
3391 | /* We may need a copy reloc too. */ | |
3392 | h->non_got_ref = 1; | |
3393 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
3394 | if (r_type == R_PPC_ADDR16_HA) |
3395 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
3396 | if (r_type == R_PPC_ADDR16_LO) | |
3397 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
3398 | } |
3399 | goto dodyn; | |
9edfd1af | 3400 | |
25dbc73a AM |
3401 | case R_PPC_REL24: |
3402 | case R_PPC_REL14: | |
3403 | case R_PPC_REL14_BRTAKEN: | |
3404 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 3405 | if (h == NULL) |
25dbc73a | 3406 | break; |
7123df0e | 3407 | if (h == htab->elf.hgot) |
d7128ce4 | 3408 | { |
7123df0e | 3409 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
3410 | { |
3411 | htab->plt_type = PLT_OLD; | |
3412 | htab->old_bfd = abfd; | |
3413 | } | |
d7128ce4 AM |
3414 | break; |
3415 | } | |
25dbc73a | 3416 | /* fall through */ |
ee05f2fe | 3417 | |
25dbc73a | 3418 | case R_PPC_ADDR24: |
25dbc73a AM |
3419 | case R_PPC_ADDR14: |
3420 | case R_PPC_ADDR14_BRTAKEN: | |
3421 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 3422 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
3423 | { |
3424 | /* We may need a plt entry if the symbol turns out to be | |
3425 | a function defined in a dynamic object. */ | |
e054468f | 3426 | h->needs_plt = 1; |
de972ffa | 3427 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 3428 | return FALSE; |
625af618 | 3429 | break; |
25dbc73a | 3430 | } |
7619e7c7 | 3431 | |
25dbc73a AM |
3432 | dodyn: |
3433 | /* If we are creating a shared library, and this is a reloc | |
3434 | against a global symbol, or a non PC relative reloc | |
3435 | against a local symbol, then we need to copy the reloc | |
3436 | into the shared library. However, if we are linking with | |
3437 | -Bsymbolic, we do not need to copy a reloc against a | |
3438 | global symbol which is defined in an object we are | |
3439 | including in the link (i.e., DEF_REGULAR is set). At | |
3440 | this point we have not seen all the input files, so it is | |
3441 | possible that DEF_REGULAR is not set now but will be set | |
3442 | later (it is never cleared). In case of a weak definition, | |
3443 | DEF_REGULAR may be cleared later by a strong definition in | |
3444 | a shared library. We account for that possibility below by | |
3445 | storing information in the dyn_relocs field of the hash | |
3446 | table entry. A similar situation occurs when creating | |
3447 | shared libraries and symbol visibility changes render the | |
3448 | symbol local. | |
7619e7c7 | 3449 | |
25dbc73a AM |
3450 | If on the other hand, we are creating an executable, we |
3451 | may need to keep relocations for symbols satisfied by a | |
3452 | dynamic library if we manage to avoid copy relocs for the | |
3453 | symbol. */ | |
0e1862bb | 3454 | if ((bfd_link_pic (info) |
1d483afe | 3455 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 3456 | || (h != NULL |
198f1157 | 3457 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
3458 | || h->root.type == bfd_link_hash_defweak |
3459 | || !h->def_regular)))) | |
3460 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 3461 | && !bfd_link_pic (info) |
25dbc73a AM |
3462 | && h != NULL |
3463 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 3464 | || !h->def_regular))) |
25dbc73a | 3465 | { |
25dbc73a AM |
3466 | #ifdef DEBUG |
3467 | fprintf (stderr, | |
3468 | "ppc_elf_check_relocs needs to " | |
3469 | "create relocation for %s\n", | |
3470 | (h && h->root.root.string | |
3471 | ? h->root.root.string : "<unknown>")); | |
3472 | #endif | |
3473 | if (sreloc == NULL) | |
3474 | { | |
c9a2f333 AM |
3475 | if (htab->elf.dynobj == NULL) |
3476 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
3477 | |
3478 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3479 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
3480 | ||
25dbc73a | 3481 | if (sreloc == NULL) |
83bac4b0 | 3482 | return FALSE; |
25dbc73a | 3483 | } |
7619e7c7 | 3484 | |
25dbc73a AM |
3485 | /* If this is a global symbol, we count the number of |
3486 | relocations we need for this symbol. */ | |
3487 | if (h != NULL) | |
3488 | { | |
f95f8542 AM |
3489 | struct elf_dyn_relocs *p; |
3490 | struct elf_dyn_relocs **rel_head; | |
3491 | ||
91d6fa6a | 3492 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
3493 | p = *rel_head; |
3494 | if (p == NULL || p->sec != sec) | |
3495 | { | |
3496 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3497 | if (p == NULL) | |
3498 | return FALSE; | |
3499 | p->next = *rel_head; | |
3500 | *rel_head = p; | |
3501 | p->sec = sec; | |
3502 | p->count = 0; | |
3503 | p->pc_count = 0; | |
3504 | } | |
3505 | p->count += 1; | |
3506 | if (!must_be_dyn_reloc (info, r_type)) | |
3507 | p->pc_count += 1; | |
25dbc73a AM |
3508 | } |
3509 | else | |
3510 | { | |
3511 | /* Track dynamic relocs needed for local syms too. | |
3512 | We really need local syms available to do this | |
3513 | easily. Oh well. */ | |
f95f8542 AM |
3514 | struct ppc_dyn_relocs *p; |
3515 | struct ppc_dyn_relocs **rel_head; | |
3516 | bfd_boolean is_ifunc; | |
25dbc73a | 3517 | asection *s; |
6edfbbad | 3518 | void *vpp; |
87d72d41 | 3519 | Elf_Internal_Sym *isym; |
6edfbbad | 3520 | |
87d72d41 AM |
3521 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3522 | abfd, r_symndx); | |
3523 | if (isym == NULL) | |
25dbc73a | 3524 | return FALSE; |
7fce784e | 3525 | |
87d72d41 AM |
3526 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
3527 | if (s == NULL) | |
3528 | s = sec; | |
3529 | ||
6edfbbad | 3530 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
3531 | rel_head = (struct ppc_dyn_relocs **) vpp; |
3532 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
3533 | p = *rel_head; | |
3534 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
3535 | p = p->next; | |
3536 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
3537 | { | |
3538 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3539 | if (p == NULL) | |
3540 | return FALSE; | |
3541 | p->next = *rel_head; | |
3542 | *rel_head = p; | |
3543 | p->sec = sec; | |
3544 | p->ifunc = is_ifunc; | |
3545 | p->count = 0; | |
3546 | } | |
3547 | p->count += 1; | |
25dbc73a | 3548 | } |
7619e7c7 | 3549 | } |
25dbc73a AM |
3550 | |
3551 | break; | |
7619e7c7 AM |
3552 | } |
3553 | } | |
ee05f2fe | 3554 | |
25dbc73a AM |
3555 | return TRUE; |
3556 | } | |
3557 | \f | |
005d79fd AM |
3558 | /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD |
3559 | and OBFD, and merge non-conflicting ones. */ | |
4a91d0ba | 3560 | bfd_boolean |
50e03d47 | 3561 | _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info) |
34c8bcba | 3562 | { |
50e03d47 | 3563 | bfd *obfd = info->output_bfd; |
c6e65352 DJ |
3564 | obj_attribute *in_attr, *in_attrs; |
3565 | obj_attribute *out_attr, *out_attrs; | |
4a91d0ba | 3566 | bfd_boolean ret = TRUE; |
34c8bcba | 3567 | |
c6e65352 DJ |
3568 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
3569 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
3570 | ||
c6e65352 DJ |
3571 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
3572 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
005d79fd | 3573 | |
c6e65352 | 3574 | if (in_attr->i != out_attr->i) |
34c8bcba | 3575 | { |
005d79fd AM |
3576 | int in_fp = in_attr->i & 3; |
3577 | int out_fp = out_attr->i & 3; | |
4a91d0ba | 3578 | static bfd *last_fp, *last_ld; |
005d79fd AM |
3579 | |
3580 | if (in_fp == 0) | |
34c8bcba | 3581 | ; |
005d79fd AM |
3582 | else if (out_fp == 0) |
3583 | { | |
8d2c8c3d | 3584 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3585 | out_attr->i ^= in_fp; |
4a91d0ba | 3586 | last_fp = ibfd; |
005d79fd AM |
3587 | } |
3588 | else if (out_fp != 2 && in_fp == 2) | |
8d2c8c3d AM |
3589 | { |
3590 | _bfd_error_handler | |
3591 | /* xgettext:c-format */ | |
4a91d0ba AM |
3592 | (_("%pB uses hard float, %pB uses soft float"), |
3593 | last_fp, ibfd); | |
3594 | ret = FALSE; | |
8d2c8c3d | 3595 | } |
005d79fd | 3596 | else if (out_fp == 2 && in_fp != 2) |
8d2c8c3d AM |
3597 | { |
3598 | _bfd_error_handler | |
3599 | /* xgettext:c-format */ | |
4a91d0ba AM |
3600 | (_("%pB uses hard float, %pB uses soft float"), |
3601 | ibfd, last_fp); | |
3602 | ret = FALSE; | |
8d2c8c3d | 3603 | } |
005d79fd | 3604 | else if (out_fp == 1 && in_fp == 3) |
8d2c8c3d AM |
3605 | { |
3606 | _bfd_error_handler | |
3607 | /* xgettext:c-format */ | |
4a91d0ba AM |
3608 | (_("%pB uses double-precision hard float, " |
3609 | "%pB uses single-precision hard float"), last_fp, ibfd); | |
3610 | ret = FALSE; | |
8d2c8c3d | 3611 | } |
005d79fd | 3612 | else if (out_fp == 3 && in_fp == 1) |
8d2c8c3d AM |
3613 | { |
3614 | _bfd_error_handler | |
3615 | /* xgettext:c-format */ | |
4a91d0ba AM |
3616 | (_("%pB uses double-precision hard float, " |
3617 | "%pB uses single-precision hard float"), ibfd, last_fp); | |
3618 | ret = FALSE; | |
8d2c8c3d | 3619 | } |
005d79fd AM |
3620 | |
3621 | in_fp = in_attr->i & 0xc; | |
3622 | out_fp = out_attr->i & 0xc; | |
3623 | if (in_fp == 0) | |
3624 | ; | |
3625 | else if (out_fp == 0) | |
3626 | { | |
8d2c8c3d | 3627 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3628 | out_attr->i ^= in_fp; |
4a91d0ba | 3629 | last_ld = ibfd; |
005d79fd AM |
3630 | } |
3631 | else if (out_fp != 2 * 4 && in_fp == 2 * 4) | |
8d2c8c3d AM |
3632 | { |
3633 | _bfd_error_handler | |
3634 | /* xgettext:c-format */ | |
4a91d0ba AM |
3635 | (_("%pB uses 64-bit long double, " |
3636 | "%pB uses 128-bit long double"), ibfd, last_ld); | |
3637 | ret = FALSE; | |
8d2c8c3d | 3638 | } |
005d79fd | 3639 | else if (in_fp != 2 * 4 && out_fp == 2 * 4) |
8d2c8c3d AM |
3640 | { |
3641 | _bfd_error_handler | |
3642 | /* xgettext:c-format */ | |
4a91d0ba AM |
3643 | (_("%pB uses 64-bit long double, " |
3644 | "%pB uses 128-bit long double"), last_ld, ibfd); | |
3645 | ret = FALSE; | |
8d2c8c3d | 3646 | } |
005d79fd | 3647 | else if (out_fp == 1 * 4 && in_fp == 3 * 4) |
8d2c8c3d AM |
3648 | { |
3649 | _bfd_error_handler | |
3650 | /* xgettext:c-format */ | |
4a91d0ba AM |
3651 | (_("%pB uses IBM long double, " |
3652 | "%pB uses IEEE long double"), last_ld, ibfd); | |
3653 | ret = FALSE; | |
8d2c8c3d | 3654 | } |
005d79fd | 3655 | else if (out_fp == 3 * 4 && in_fp == 1 * 4) |
8d2c8c3d AM |
3656 | { |
3657 | _bfd_error_handler | |
3658 | /* xgettext:c-format */ | |
4a91d0ba AM |
3659 | (_("%pB uses IBM long double, " |
3660 | "%pB uses IEEE long double"), ibfd, last_ld); | |
3661 | ret = FALSE; | |
8d2c8c3d | 3662 | } |
c6e65352 | 3663 | } |
4a91d0ba AM |
3664 | |
3665 | if (!ret) | |
3666 | { | |
3667 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; | |
3668 | bfd_set_error (bfd_error_bad_value); | |
3669 | } | |
3670 | return ret; | |
005d79fd AM |
3671 | } |
3672 | ||
3673 | /* Merge object attributes from IBFD into OBFD. Warn if | |
3674 | there are conflicting attributes. */ | |
3675 | static bfd_boolean | |
50e03d47 | 3676 | ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
005d79fd | 3677 | { |
50e03d47 | 3678 | bfd *obfd; |
005d79fd AM |
3679 | obj_attribute *in_attr, *in_attrs; |
3680 | obj_attribute *out_attr, *out_attrs; | |
4a91d0ba | 3681 | bfd_boolean ret; |
005d79fd | 3682 | |
4a91d0ba AM |
3683 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
3684 | return FALSE; | |
005d79fd | 3685 | |
50e03d47 | 3686 | obfd = info->output_bfd; |
005d79fd AM |
3687 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
3688 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
c6e65352 DJ |
3689 | |
3690 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
3691 | merge non-conflicting ones. */ | |
3692 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
3693 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4a91d0ba | 3694 | ret = TRUE; |
c6e65352 DJ |
3695 | if (in_attr->i != out_attr->i) |
3696 | { | |
005d79fd AM |
3697 | int in_vec = in_attr->i & 3; |
3698 | int out_vec = out_attr->i & 3; | |
4a91d0ba | 3699 | static bfd *last_vec; |
c6e65352 | 3700 | |
005d79fd AM |
3701 | if (in_vec == 0) |
3702 | ; | |
3703 | else if (out_vec == 0) | |
c6e65352 | 3704 | { |
8d2c8c3d | 3705 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3706 | out_attr->i = in_vec; |
4a91d0ba | 3707 | last_vec = ibfd; |
c6e65352 | 3708 | } |
c6e65352 DJ |
3709 | /* For now, allow generic to transition to AltiVec or SPE |
3710 | without a warning. If GCC marked files with their stack | |
3711 | alignment and used don't-care markings for files which are | |
3712 | not affected by the vector ABI, we could warn about this | |
3713 | case too. */ | |
005d79fd | 3714 | else if (in_vec == 1) |
c6e65352 | 3715 | ; |
005d79fd AM |
3716 | else if (out_vec == 1) |
3717 | { | |
8d2c8c3d | 3718 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3719 | out_attr->i = in_vec; |
4a91d0ba | 3720 | last_vec = ibfd; |
005d79fd AM |
3721 | } |
3722 | else if (out_vec < in_vec) | |
8d2c8c3d AM |
3723 | { |
3724 | _bfd_error_handler | |
3725 | /* xgettext:c-format */ | |
4a91d0ba AM |
3726 | (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
3727 | last_vec, ibfd); | |
8d2c8c3d | 3728 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3729 | ret = FALSE; |
8d2c8c3d | 3730 | } |
005d79fd | 3731 | else if (out_vec > in_vec) |
8d2c8c3d AM |
3732 | { |
3733 | _bfd_error_handler | |
3734 | /* xgettext:c-format */ | |
4a91d0ba AM |
3735 | (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
3736 | ibfd, last_vec); | |
8d2c8c3d | 3737 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3738 | ret = FALSE; |
8d2c8c3d | 3739 | } |
34c8bcba JM |
3740 | } |
3741 | ||
f82e0623 NF |
3742 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
3743 | and merge non-conflicting ones. */ | |
3744 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
3745 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
3746 | if (in_attr->i != out_attr->i) | |
3747 | { | |
005d79fd AM |
3748 | int in_struct = in_attr->i & 3; |
3749 | int out_struct = out_attr->i & 3; | |
4a91d0ba | 3750 | static bfd *last_struct; |
005d79fd AM |
3751 | |
3752 | if (in_struct == 0 || in_struct == 3) | |
f82e0623 | 3753 | ; |
005d79fd AM |
3754 | else if (out_struct == 0) |
3755 | { | |
8d2c8c3d | 3756 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3757 | out_attr->i = in_struct; |
4a91d0ba | 3758 | last_struct = ibfd; |
005d79fd AM |
3759 | } |
3760 | else if (out_struct < in_struct) | |
8d2c8c3d AM |
3761 | { |
3762 | _bfd_error_handler | |
3763 | /* xgettext:c-format */ | |
4a91d0ba AM |
3764 | (_("%pB uses r3/r4 for small structure returns, " |
3765 | "%pB uses memory"), last_struct, ibfd); | |
8d2c8c3d | 3766 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3767 | ret = FALSE; |
8d2c8c3d | 3768 | } |
005d79fd | 3769 | else if (out_struct > in_struct) |
8d2c8c3d AM |
3770 | { |
3771 | _bfd_error_handler | |
3772 | /* xgettext:c-format */ | |
4a91d0ba AM |
3773 | (_("%pB uses r3/r4 for small structure returns, " |
3774 | "%pB uses memory"), ibfd, last_struct); | |
8d2c8c3d | 3775 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3776 | ret = FALSE; |
8d2c8c3d | 3777 | } |
f82e0623 | 3778 | } |
4a91d0ba AM |
3779 | if (!ret) |
3780 | { | |
3781 | bfd_set_error (bfd_error_bad_value); | |
3782 | return FALSE; | |
3783 | } | |
f82e0623 | 3784 | |
34c8bcba | 3785 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 3786 | return _bfd_elf_merge_object_attributes (ibfd, info); |
34c8bcba JM |
3787 | } |
3788 | ||
8853c3d3 AM |
3789 | /* Merge backend specific data from an object file to the output |
3790 | object file when linking. */ | |
3791 | ||
3792 | static bfd_boolean | |
50e03d47 | 3793 | ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
8853c3d3 | 3794 | { |
50e03d47 | 3795 | bfd *obfd = info->output_bfd; |
8853c3d3 AM |
3796 | flagword old_flags; |
3797 | flagword new_flags; | |
3798 | bfd_boolean error; | |
3799 | ||
0c8d6e5c | 3800 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
3801 | return TRUE; |
3802 | ||
cc643b88 | 3803 | /* Check if we have the same endianness. */ |
50e03d47 | 3804 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
8853c3d3 AM |
3805 | return FALSE; |
3806 | ||
50e03d47 | 3807 | if (!ppc_elf_merge_obj_attributes (ibfd, info)) |
34c8bcba JM |
3808 | return FALSE; |
3809 | ||
8853c3d3 AM |
3810 | new_flags = elf_elfheader (ibfd)->e_flags; |
3811 | old_flags = elf_elfheader (obfd)->e_flags; | |
3812 | if (!elf_flags_init (obfd)) | |
3813 | { | |
3814 | /* First call, no flags set. */ | |
3815 | elf_flags_init (obfd) = TRUE; | |
3816 | elf_elfheader (obfd)->e_flags = new_flags; | |
3817 | } | |
3818 | ||
3819 | /* Compatible flags are ok. */ | |
3820 | else if (new_flags == old_flags) | |
3821 | ; | |
3822 | ||
3823 | /* Incompatible flags. */ | |
3824 | else | |
3825 | { | |
3826 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
3827 | to be linked with either. */ | |
3828 | error = FALSE; | |
3829 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
3830 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
3831 | { | |
3832 | error = TRUE; | |
4eca0228 | 3833 | _bfd_error_handler |
871b3ab2 | 3834 | (_("%pB: compiled with -mrelocatable and linked with " |
8853c3d3 AM |
3835 | "modules compiled normally"), ibfd); |
3836 | } | |
3837 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
3838 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
3839 | { | |
3840 | error = TRUE; | |
4eca0228 | 3841 | _bfd_error_handler |
871b3ab2 | 3842 | (_("%pB: compiled normally and linked with " |
8853c3d3 AM |
3843 | "modules compiled with -mrelocatable"), ibfd); |
3844 | } | |
3845 | ||
3846 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
3847 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
3848 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
3849 | ||
3850 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3851 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
3852 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
3853 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
3854 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
3855 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
3856 | ||
3857 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
3858 | any module uses it. */ | |
3859 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
3860 | ||
3861 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3862 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3863 | ||
3864 | /* Warn about any other mismatches. */ | |
3865 | if (new_flags != old_flags) | |
3866 | { | |
3867 | error = TRUE; | |
4eca0228 | 3868 | _bfd_error_handler |
695344c0 | 3869 | /* xgettext:c-format */ |
871b3ab2 | 3870 | (_("%pB: uses different e_flags (%#x) fields " |
cd9af601 AM |
3871 | "than previous modules (%#x)"), |
3872 | ibfd, new_flags, old_flags); | |
8853c3d3 AM |
3873 | } |
3874 | ||
3875 | if (error) | |
3876 | { | |
3877 | bfd_set_error (bfd_error_bad_value); | |
3878 | return FALSE; | |
3879 | } | |
3880 | } | |
3881 | ||
3882 | return TRUE; | |
3883 | } | |
b9c361e0 JL |
3884 | |
3885 | static void | |
95f0d0d2 | 3886 | ppc_elf_vle_split16 (bfd *input_bfd, |
08dc996f AM |
3887 | asection *input_section, |
3888 | unsigned long offset, | |
95f0d0d2 | 3889 | bfd_byte *loc, |
86c95733 | 3890 | bfd_vma value, |
08dc996f AM |
3891 | split16_format_type split16_format, |
3892 | bfd_boolean fixup) | |
b9c361e0 | 3893 | { |
bb6bf75e | 3894 | unsigned int insn, opcode; |
b9c361e0 | 3895 | |
95f0d0d2 | 3896 | insn = bfd_get_32 (input_bfd, loc); |
bb6bf75e | 3897 | opcode = insn & E_OPCODE_MASK; |
08dc996f AM |
3898 | if (opcode == E_OR2I_INSN |
3899 | || opcode == E_AND2I_DOT_INSN | |
3900 | || opcode == E_OR2IS_INSN | |
3901 | || opcode == E_LIS_INSN | |
3902 | || opcode == E_AND2IS_DOT_INSN) | |
3903 | { | |
3904 | if (split16_format != split16a_type) | |
3905 | { | |
3906 | if (fixup) | |
3907 | split16_format = split16a_type; | |
3908 | else | |
3909 | _bfd_error_handler | |
3910 | /* xgettext:c-format */ | |
871b3ab2 | 3911 | (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"), |
08dc996f AM |
3912 | input_bfd, input_section, offset, opcode); |
3913 | } | |
3914 | } | |
3915 | else if (opcode == E_ADD2I_DOT_INSN | |
3916 | || opcode == E_ADD2IS_INSN | |
3917 | || opcode == E_CMP16I_INSN | |
3918 | || opcode == E_MULL2I_INSN | |
3919 | || opcode == E_CMPL16I_INSN | |
3920 | || opcode == E_CMPH16I_INSN | |
3921 | || opcode == E_CMPHL16I_INSN) | |
3922 | { | |
3923 | if (split16_format != split16d_type) | |
3924 | { | |
3925 | if (fixup) | |
3926 | split16_format = split16d_type; | |
3927 | else | |
3928 | _bfd_error_handler | |
3929 | /* xgettext:c-format */ | |
871b3ab2 | 3930 | (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"), |
08dc996f AM |
3931 | input_bfd, input_section, offset, opcode); |
3932 | } | |
3933 | } | |
bb6bf75e AM |
3934 | if (split16_format == split16a_type) |
3935 | { | |
3936 | insn &= ~((0xf800 << 5) | 0x7ff); | |
3937 | insn |= (value & 0xf800) << 5; | |
3938 | if ((insn & E_LI_MASK) == E_LI_INSN) | |
3939 | { | |
3940 | /* Hack for e_li. Extend sign. */ | |
3941 | insn &= ~(0xf0000 >> 5); | |
3942 | insn |= (-(value & 0x8000) & 0xf0000) >> 5; | |
3943 | } | |
3944 | } | |
3945 | else | |
3946 | { | |
3947 | insn &= ~((0xf800 << 10) | 0x7ff); | |
3948 | insn |= (value & 0xf800) << 10; | |
3949 | } | |
86c95733 | 3950 | insn |= value & 0x7ff; |
95f0d0d2 | 3951 | bfd_put_32 (input_bfd, insn, loc); |
b9c361e0 | 3952 | } |
83eef883 AFB |
3953 | |
3954 | static void | |
3955 | ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value) | |
3956 | { | |
3957 | unsigned int insn; | |
3958 | ||
3959 | insn = bfd_get_32 (output_bfd, loc); | |
3960 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
3961 | /* Top 4 bits of value to 17..20. */ | |
3962 | insn |= (value & 0xf0000) >> 5; | |
3963 | /* Next 5 bits of the value to 11..15. */ | |
3964 | insn |= (value & 0xf800) << 5; | |
3965 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
3966 | insn |= value & 0x7ff; | |
3967 | bfd_put_32 (output_bfd, insn, loc); | |
3968 | } | |
3969 | ||
8853c3d3 | 3970 | \f |
d7128ce4 AM |
3971 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
3972 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
3973 | int | |
3974 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 3975 | struct bfd_link_info *info) |
d7128ce4 AM |
3976 | { |
3977 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 3978 | flagword flags; |
d7128ce4 AM |
3979 | |
3980 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
3981 | |
3982 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 3983 | { |
b3874e1a AM |
3984 | struct elf_link_hash_entry *h; |
3985 | ||
5446cbdf | 3986 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 3987 | htab->plt_type = PLT_OLD; |
0e1862bb | 3988 | else if (bfd_link_pic (info) |
b3874e1a AM |
3989 | && htab->elf.dynamic_sections_created |
3990 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
3991 | FALSE, FALSE, TRUE)) != NULL | |
3992 | && (h->type == STT_FUNC | |
3993 | || h->needs_plt) | |
3994 | && h->ref_regular | |
3995 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
21d68fcd | 3996 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
b3874e1a AM |
3997 | { |
3998 | /* Profiling of shared libs (and pies) is not supported with | |
3999 | secure plt, because ppc32 does profiling before a | |
4000 | function prologue and a secure plt pic call stubs needs | |
4001 | r30 to be set up. */ | |
4002 | htab->plt_type = PLT_OLD; | |
4003 | } | |
016687f8 AM |
4004 | else |
4005 | { | |
4006 | bfd *ibfd; | |
5446cbdf | 4007 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4008 | |
4009 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4010 | Use the old style bss plt if a file makes plt calls | |
4011 | without using the new relocs, and if ld isn't given | |
4012 | --secure-plt and we never see REL16 relocs. */ | |
4013 | if (plt_type == PLT_UNSET) | |
4014 | plt_type = PLT_OLD; | |
c72f2fb2 | 4015 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4016 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4017 | { |
4018 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4019 | plt_type = PLT_NEW; | |
4020 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4021 | { | |
4022 | plt_type = PLT_OLD; | |
4023 | htab->old_bfd = ibfd; | |
4024 | break; | |
4025 | } | |
4026 | } | |
4027 | htab->plt_type = plt_type; | |
4028 | } | |
4029 | } | |
5446cbdf | 4030 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
4031 | { |
4032 | if (htab->old_bfd != NULL) | |
cf97bcb0 | 4033 | _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd); |
b3874e1a | 4034 | else |
cf97bcb0 | 4035 | _bfd_error_handler (_("bss-plt forced by profiling")); |
b3874e1a | 4036 | } |
d7128ce4 | 4037 | |
4a3dc543 | 4038 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 4039 | |
4a3dc543 | 4040 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
4041 | { |
4042 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4043 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
4044 | |
4045 | /* The new PLT is a loaded section. */ | |
ce558b89 AM |
4046 | if (htab->elf.splt != NULL |
4047 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags)) | |
86b9da88 AM |
4048 | return -1; |
4049 | ||
4050 | /* The new GOT is not executable. */ | |
ce558b89 AM |
4051 | if (htab->elf.sgot != NULL |
4052 | && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags)) | |
86b9da88 | 4053 | return -1; |
d7128ce4 AM |
4054 | } |
4055 | else | |
4056 | { | |
4057 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 AM |
4058 | if (htab->glink != NULL |
4059 | && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0)) | |
4060 | return -1; | |
d7128ce4 | 4061 | } |
4a3dc543 | 4062 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
4063 | } |
4064 | \f | |
25dbc73a AM |
4065 | /* Return the section that should be marked against GC for a given |
4066 | relocation. */ | |
586119b3 | 4067 | |
25dbc73a AM |
4068 | static asection * |
4069 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 4070 | struct bfd_link_info *info, |
25dbc73a AM |
4071 | Elf_Internal_Rela *rel, |
4072 | struct elf_link_hash_entry *h, | |
4073 | Elf_Internal_Sym *sym) | |
4074 | { | |
4075 | if (h != NULL) | |
07adf181 AM |
4076 | switch (ELF32_R_TYPE (rel->r_info)) |
4077 | { | |
4078 | case R_PPC_GNU_VTINHERIT: | |
4079 | case R_PPC_GNU_VTENTRY: | |
4080 | return NULL; | |
4081 | } | |
4082 | ||
4083 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 4084 | } |
49c09209 AM |
4085 | |
4086 | static bfd_boolean | |
4087 | get_sym_h (struct elf_link_hash_entry **hp, | |
4088 | Elf_Internal_Sym **symp, | |
4089 | asection **symsecp, | |
4090 | unsigned char **tls_maskp, | |
4091 | Elf_Internal_Sym **locsymsp, | |
4092 | unsigned long r_symndx, | |
4093 | bfd *ibfd) | |
4094 | { | |
4095 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
4096 | ||
4097 | if (r_symndx >= symtab_hdr->sh_info) | |
4098 | { | |
4099 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4100 | struct elf_link_hash_entry *h; | |
4101 | ||
4102 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4103 | while (h->root.type == bfd_link_hash_indirect | |
4104 | || h->root.type == bfd_link_hash_warning) | |
4105 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4106 | ||
4107 | if (hp != NULL) | |
4108 | *hp = h; | |
4109 | ||
4110 | if (symp != NULL) | |
4111 | *symp = NULL; | |
4112 | ||
4113 | if (symsecp != NULL) | |
4114 | { | |
4115 | asection *symsec = NULL; | |
4116 | if (h->root.type == bfd_link_hash_defined | |
4117 | || h->root.type == bfd_link_hash_defweak) | |
4118 | symsec = h->root.u.def.section; | |
4119 | *symsecp = symsec; | |
4120 | } | |
4121 | ||
4122 | if (tls_maskp != NULL) | |
4123 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; | |
4124 | } | |
4125 | else | |
4126 | { | |
4127 | Elf_Internal_Sym *sym; | |
4128 | Elf_Internal_Sym *locsyms = *locsymsp; | |
4129 | ||
4130 | if (locsyms == NULL) | |
4131 | { | |
4132 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4133 | if (locsyms == NULL) | |
4134 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4135 | symtab_hdr->sh_info, | |
4136 | 0, NULL, NULL, NULL); | |
4137 | if (locsyms == NULL) | |
4138 | return FALSE; | |
4139 | *locsymsp = locsyms; | |
4140 | } | |
4141 | sym = locsyms + r_symndx; | |
4142 | ||
4143 | if (hp != NULL) | |
4144 | *hp = NULL; | |
4145 | ||
4146 | if (symp != NULL) | |
4147 | *symp = sym; | |
4148 | ||
4149 | if (symsecp != NULL) | |
4150 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
4151 | ||
4152 | if (tls_maskp != NULL) | |
4153 | { | |
4154 | bfd_signed_vma *local_got; | |
4155 | unsigned char *tls_mask; | |
4156 | ||
4157 | tls_mask = NULL; | |
4158 | local_got = elf_local_got_refcounts (ibfd); | |
4159 | if (local_got != NULL) | |
4160 | { | |
4161 | struct plt_entry **local_plt = (struct plt_entry **) | |
4162 | (local_got + symtab_hdr->sh_info); | |
4163 | unsigned char *lgot_masks = (unsigned char *) | |
4164 | (local_plt + symtab_hdr->sh_info); | |
4165 | tls_mask = &lgot_masks[r_symndx]; | |
4166 | } | |
4167 | *tls_maskp = tls_mask; | |
4168 | } | |
4169 | } | |
4170 | return TRUE; | |
4171 | } | |
25dbc73a | 4172 | \f |
3e04d765 AM |
4173 | /* Analyze inline PLT call relocations to see whether calls to locally |
4174 | defined functions can be converted to direct calls. */ | |
4175 | ||
4176 | bfd_boolean | |
4177 | ppc_elf_inline_plt (struct bfd_link_info *info) | |
4178 | { | |
4179 | struct ppc_elf_link_hash_table *htab; | |
4180 | bfd *ibfd; | |
4181 | asection *sec; | |
4182 | bfd_vma low_vma, high_vma, limit; | |
4183 | ||
4184 | htab = ppc_elf_hash_table (info); | |
4185 | if (htab == NULL) | |
4186 | return FALSE; | |
4187 | ||
4188 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
4189 | reduced somewhat to cater for possible stubs that might be added | |
4190 | between the call and its destination. */ | |
4191 | limit = 0x1e00000; | |
4192 | low_vma = -1; | |
4193 | high_vma = 0; | |
4194 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
4195 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
4196 | { | |
4197 | if (low_vma > sec->vma) | |
4198 | low_vma = sec->vma; | |
4199 | if (high_vma < sec->vma + sec->size) | |
4200 | high_vma = sec->vma + sec->size; | |
4201 | } | |
4202 | ||
4203 | /* If a "bl" can reach anywhere in local code sections, then we can | |
4204 | convert all inline PLT sequences to direct calls when the symbol | |
4205 | is local. */ | |
4206 | if (high_vma - low_vma < limit) | |
4207 | { | |
4208 | htab->can_convert_all_inline_plt = 1; | |
4209 | return TRUE; | |
4210 | } | |
4211 | ||
4212 | /* Otherwise, go looking through relocs for cases where a direct | |
4213 | call won't reach. Mark the symbol on any such reloc to disable | |
4214 | the optimization and keep the PLT entry as it seems likely that | |
4215 | this will be better than creating trampolines. Note that this | |
4216 | will disable the optimization for all inline PLT calls to a | |
4217 | particular symbol, not just those that won't reach. The | |
4218 | difficulty in doing a more precise optimization is that the | |
4219 | linker needs to make a decision depending on whether a | |
4220 | particular R_PPC_PLTCALL insn can be turned into a direct | |
4221 | call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in | |
4222 | the sequence, and there is nothing that ties those relocs | |
4223 | together except their symbol. */ | |
4224 | ||
4225 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
4226 | { | |
4227 | Elf_Internal_Shdr *symtab_hdr; | |
4228 | Elf_Internal_Sym *local_syms; | |
4229 | ||
4230 | if (!is_ppc_elf (ibfd)) | |
4231 | continue; | |
4232 | ||
4233 | local_syms = NULL; | |
4234 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4235 | ||
4236 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
4237 | if (sec->has_pltcall | |
4238 | && !bfd_is_abs_section (sec->output_section)) | |
4239 | { | |
4240 | Elf_Internal_Rela *relstart, *rel, *relend; | |
4241 | ||
4242 | /* Read the relocations. */ | |
4243 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
4244 | info->keep_memory); | |
4245 | if (relstart == NULL) | |
4246 | return FALSE; | |
4247 | ||
4248 | relend = relstart + sec->reloc_count; | |
4249 | for (rel = relstart; rel < relend; ) | |
4250 | { | |
4251 | enum elf_ppc_reloc_type r_type; | |
4252 | unsigned long r_symndx; | |
4253 | asection *sym_sec; | |
4254 | struct elf_link_hash_entry *h; | |
4255 | Elf_Internal_Sym *sym; | |
4256 | unsigned char *tls_maskp; | |
4257 | ||
4258 | r_type = ELF32_R_TYPE (rel->r_info); | |
4259 | if (r_type != R_PPC_PLTCALL) | |
4260 | continue; | |
4261 | ||
4262 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4263 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
4264 | r_symndx, ibfd)) | |
4265 | { | |
4266 | if (elf_section_data (sec)->relocs != relstart) | |
4267 | free (relstart); | |
4268 | if (local_syms != NULL | |
4269 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
4270 | free (local_syms); | |
4271 | return FALSE; | |
4272 | } | |
4273 | ||
4274 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
4275 | { | |
4276 | bfd_vma from, to; | |
4277 | if (h != NULL) | |
4278 | to = h->root.u.def.value; | |
4279 | else | |
4280 | to = sym->st_value; | |
4281 | to += (rel->r_addend | |
4282 | + sym_sec->output_offset | |
4283 | + sym_sec->output_section->vma); | |
4284 | from = (rel->r_offset | |
4285 | + sec->output_offset | |
4286 | + sec->output_section->vma); | |
4287 | if (to - from + limit < 2 * limit) | |
4288 | *tls_maskp &= ~PLT_KEEP; | |
4289 | } | |
4290 | } | |
4291 | if (elf_section_data (sec)->relocs != relstart) | |
4292 | free (relstart); | |
4293 | } | |
4294 | ||
4295 | if (local_syms != NULL | |
4296 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
4297 | { | |
4298 | if (!info->keep_memory) | |
4299 | free (local_syms); | |
4300 | else | |
4301 | symtab_hdr->contents = (unsigned char *) local_syms; | |
4302 | } | |
4303 | } | |
4304 | ||
4305 | return TRUE; | |
4306 | } | |
4307 | ||
3a71aa26 AM |
4308 | /* Set plt output section type, htab->tls_get_addr, and call the |
4309 | generic ELF tls_setup function. */ | |
7fce784e | 4310 | |
25dbc73a | 4311 | asection * |
5446cbdf | 4312 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 4313 | { |
25dbc73a | 4314 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 4315 | |
25dbc73a | 4316 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
4317 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4318 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
4319 | if (htab->plt_type != PLT_NEW) |
4320 | htab->params->no_tls_get_addr_opt = TRUE; | |
4321 | ||
5446cbdf | 4322 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
4323 | { |
4324 | struct elf_link_hash_entry *opt, *tga; | |
4325 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
4326 | FALSE, FALSE, TRUE); | |
4327 | if (opt != NULL | |
4328 | && (opt->root.type == bfd_link_hash_defined | |
4329 | || opt->root.type == bfd_link_hash_defweak)) | |
4330 | { | |
4331 | /* If glibc supports an optimized __tls_get_addr call stub, | |
4332 | signalled by the presence of __tls_get_addr_opt, and we'll | |
4333 | be calling __tls_get_addr via a plt call stub, then | |
4334 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
4335 | tga = htab->tls_get_addr; | |
4336 | if (htab->elf.dynamic_sections_created | |
4337 | && tga != NULL | |
4338 | && (tga->type == STT_FUNC | |
4339 | || tga->needs_plt) | |
4340 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
21d68fcd | 4341 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga))) |
a7f2871e AM |
4342 | { |
4343 | struct plt_entry *ent; | |
32af9f6e AM |
4344 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
4345 | if (ent->plt.refcount > 0) | |
4346 | break; | |
4347 | if (ent != NULL) | |
a7f2871e AM |
4348 | { |
4349 | tga->root.type = bfd_link_hash_indirect; | |
4350 | tga->root.u.i.link = &opt->root; | |
4351 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 4352 | opt->mark = 1; |
a7f2871e AM |
4353 | if (opt->dynindx != -1) |
4354 | { | |
4355 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
4356 | opt->dynindx = -1; | |
4357 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4358 | opt->dynstr_index); | |
4359 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
4360 | return FALSE; | |
4361 | } | |
4362 | htab->tls_get_addr = opt; | |
4363 | } | |
4364 | } | |
4365 | } | |
4366 | else | |
5446cbdf | 4367 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 4368 | } |
4a3dc543 | 4369 | if (htab->plt_type == PLT_NEW |
ce558b89 AM |
4370 | && htab->elf.splt != NULL |
4371 | && htab->elf.splt->output_section != NULL) | |
d7128ce4 | 4372 | { |
ce558b89 AM |
4373 | elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS; |
4374 | elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE; | |
d7128ce4 AM |
4375 | } |
4376 | ||
25dbc73a | 4377 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
4378 | } |
4379 | ||
3a71aa26 AM |
4380 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
4381 | HASH. */ | |
4382 | ||
4383 | static bfd_boolean | |
4384 | branch_reloc_hash_match (const bfd *ibfd, | |
4385 | const Elf_Internal_Rela *rel, | |
4386 | const struct elf_link_hash_entry *hash) | |
4387 | { | |
4388 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
4389 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
4390 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
4391 | ||
e054468f | 4392 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
4393 | { |
4394 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4395 | struct elf_link_hash_entry *h; | |
4396 | ||
4397 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4398 | while (h->root.type == bfd_link_hash_indirect | |
4399 | || h->root.type == bfd_link_hash_warning) | |
4400 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4401 | if (h == hash) | |
4402 | return TRUE; | |
4403 | } | |
4404 | return FALSE; | |
4405 | } | |
4406 | ||
25dbc73a AM |
4407 | /* Run through all the TLS relocs looking for optimization |
4408 | opportunities. */ | |
252b5132 | 4409 | |
25dbc73a AM |
4410 | bfd_boolean |
4411 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
4412 | struct bfd_link_info *info) | |
252b5132 | 4413 | { |
7fce784e | 4414 | bfd *ibfd; |
25dbc73a AM |
4415 | asection *sec; |
4416 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 4417 | int pass; |
252b5132 | 4418 | |
3cbc1e5e | 4419 | if (!bfd_link_executable (info)) |
25dbc73a | 4420 | return TRUE; |
252b5132 | 4421 | |
7619e7c7 | 4422 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
4423 | if (htab == NULL) |
4424 | return FALSE; | |
4425 | ||
b7fcf6f6 AM |
4426 | /* Make two passes through the relocs. First time check that tls |
4427 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
4428 | followed by such a call. If they are not, don't do any tls |
4429 | optimization. On the second pass twiddle tls_mask flags to | |
4430 | notify relocate_section that optimization can be done, and | |
4431 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 4432 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 4433 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 | 4434 | { |
0ffa91dd | 4435 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 4436 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 4437 | |
b7fcf6f6 AM |
4438 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
4439 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
4440 | { | |
4441 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 4442 | int expecting_tls_get_addr = 0; |
252b5132 | 4443 | |
b7fcf6f6 AM |
4444 | /* Read the relocations. */ |
4445 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
4446 | info->keep_memory); | |
4447 | if (relstart == NULL) | |
4448 | return FALSE; | |
7619e7c7 | 4449 | |
b7fcf6f6 AM |
4450 | relend = relstart + sec->reloc_count; |
4451 | for (rel = relstart; rel < relend; rel++) | |
4452 | { | |
4453 | enum elf_ppc_reloc_type r_type; | |
4454 | unsigned long r_symndx; | |
4455 | struct elf_link_hash_entry *h = NULL; | |
bac3c8c5 | 4456 | unsigned char *tls_mask; |
37da22e5 | 4457 | unsigned char tls_set, tls_clear; |
b7fcf6f6 | 4458 | bfd_boolean is_local; |
b7fcf6f6 AM |
4459 | bfd_signed_vma *got_count; |
4460 | ||
4461 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4462 | if (r_symndx >= symtab_hdr->sh_info) | |
4463 | { | |
4464 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 4465 | |
b7fcf6f6 AM |
4466 | sym_hashes = elf_sym_hashes (ibfd); |
4467 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4468 | while (h->root.type == bfd_link_hash_indirect | |
4469 | || h->root.type == bfd_link_hash_warning) | |
4470 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4471 | } | |
7619e7c7 | 4472 | |
b7fcf6f6 AM |
4473 | is_local = FALSE; |
4474 | if (h == NULL | |
4475 | || !h->def_dynamic) | |
4476 | is_local = TRUE; | |
7619e7c7 | 4477 | |
b7fcf6f6 | 4478 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
4479 | /* If this section has old-style __tls_get_addr calls |
4480 | without marker relocs, then check that each | |
4481 | __tls_get_addr call reloc is preceded by a reloc | |
4482 | that conceivably belongs to the __tls_get_addr arg | |
4483 | setup insn. If we don't find matching arg setup | |
4484 | relocs, don't do any tls optimization. */ | |
4485 | if (pass == 0 | |
4486 | && sec->has_tls_get_addr_call | |
4487 | && h != NULL | |
4488 | && h == htab->tls_get_addr | |
4489 | && !expecting_tls_get_addr | |
4490 | && is_branch_reloc (r_type)) | |
4491 | { | |
25f53a85 | 4492 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
4493 | "TLS optimization disabled\n", |
4494 | ibfd, sec, rel->r_offset); | |
4495 | if (elf_section_data (sec)->relocs != relstart) | |
4496 | free (relstart); | |
4497 | return TRUE; | |
4498 | } | |
4499 | ||
4500 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
4501 | switch (r_type) |
4502 | { | |
4503 | case R_PPC_GOT_TLSLD16: | |
4504 | case R_PPC_GOT_TLSLD16_LO: | |
4505 | expecting_tls_get_addr = 1; | |
1a0670f3 | 4506 | /* Fall through. */ |
b7fcf6f6 AM |
4507 | |
4508 | case R_PPC_GOT_TLSLD16_HI: | |
4509 | case R_PPC_GOT_TLSLD16_HA: | |
4510 | /* These relocs should never be against a symbol | |
4511 | defined in a shared lib. Leave them alone if | |
4512 | that turns out to be the case. */ | |
4513 | if (!is_local) | |
4514 | continue; | |
4515 | ||
4516 | /* LD -> LE */ | |
4517 | tls_set = 0; | |
4518 | tls_clear = TLS_LD; | |
4519 | break; | |
4520 | ||
4521 | case R_PPC_GOT_TLSGD16: | |
4522 | case R_PPC_GOT_TLSGD16_LO: | |
4523 | expecting_tls_get_addr = 1; | |
1a0670f3 | 4524 | /* Fall through. */ |
b7fcf6f6 AM |
4525 | |
4526 | case R_PPC_GOT_TLSGD16_HI: | |
4527 | case R_PPC_GOT_TLSGD16_HA: | |
4528 | if (is_local) | |
4529 | /* GD -> LE */ | |
4530 | tls_set = 0; | |
4531 | else | |
4532 | /* GD -> IE */ | |
b00a0a86 | 4533 | tls_set = TLS_TLS | TLS_GDIE; |
b7fcf6f6 AM |
4534 | tls_clear = TLS_GD; |
4535 | break; | |
4536 | ||
4537 | case R_PPC_GOT_TPREL16: | |
4538 | case R_PPC_GOT_TPREL16_LO: | |
4539 | case R_PPC_GOT_TPREL16_HI: | |
4540 | case R_PPC_GOT_TPREL16_HA: | |
4541 | if (is_local) | |
4542 | { | |
4543 | /* IE -> LE */ | |
4544 | tls_set = 0; | |
4545 | tls_clear = TLS_TPREL; | |
4546 | break; | |
4547 | } | |
4548 | else | |
4549 | continue; | |
4550 | ||
32af9f6e AM |
4551 | case R_PPC_TLSGD: |
4552 | case R_PPC_TLSLD: | |
23cedd1d AM |
4553 | if (rel + 1 < relend |
4554 | && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) | |
4555 | { | |
4556 | if (pass != 0 | |
4557 | && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ) | |
4558 | { | |
4559 | r_type = ELF32_R_TYPE (rel[1].r_info); | |
4560 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
4561 | if (r_symndx >= symtab_hdr->sh_info) | |
4562 | { | |
4563 | struct elf_link_hash_entry **sym_hashes; | |
4564 | ||
4565 | sym_hashes = elf_sym_hashes (ibfd); | |
4566 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4567 | while (h->root.type == bfd_link_hash_indirect | |
4568 | || h->root.type == bfd_link_hash_warning) | |
4569 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4570 | if (h != NULL) | |
4571 | { | |
4572 | struct plt_entry *ent = NULL; | |
4573 | bfd_vma addend = 0; | |
4574 | ||
4575 | if (bfd_link_pic (info)) | |
4576 | addend = rel->r_addend; | |
4577 | ent = find_plt_ent (&h->plt.plist, | |
4578 | got2, addend); | |
4579 | if (ent != NULL | |
4580 | && ent->plt.refcount > 0) | |
4581 | ent->plt.refcount -= 1; | |
4582 | } | |
4583 | } | |
4584 | } | |
4585 | continue; | |
4586 | } | |
32af9f6e AM |
4587 | expecting_tls_get_addr = 2; |
4588 | tls_set = 0; | |
4589 | tls_clear = 0; | |
4590 | break; | |
4591 | ||
b7fcf6f6 | 4592 | default: |
25dbc73a | 4593 | continue; |
b7fcf6f6 | 4594 | } |
25dbc73a | 4595 | |
b7fcf6f6 AM |
4596 | if (pass == 0) |
4597 | { | |
727fc41e | 4598 | if (!expecting_tls_get_addr |
23cedd1d | 4599 | || !sec->has_tls_get_addr_call) |
b7fcf6f6 | 4600 | continue; |
25dbc73a | 4601 | |
3a71aa26 AM |
4602 | if (rel + 1 < relend |
4603 | && branch_reloc_hash_match (ibfd, rel + 1, | |
4604 | htab->tls_get_addr)) | |
4605 | continue; | |
25dbc73a | 4606 | |
b7fcf6f6 AM |
4607 | /* Uh oh, we didn't find the expected call. We |
4608 | could just mark this symbol to exclude it | |
4609 | from tls optimization but it's safer to skip | |
663a1470 | 4610 | the entire optimization. */ |
25f53a85 | 4611 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
4612 | "TLS optimization disabled\n"), |
4613 | ibfd, sec, rel->r_offset); | |
4614 | if (elf_section_data (sec)->relocs != relstart) | |
4615 | free (relstart); | |
4616 | return TRUE; | |
b7fcf6f6 | 4617 | } |
25dbc73a | 4618 | |
b7fcf6f6 AM |
4619 | if (h != NULL) |
4620 | { | |
4621 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4622 | got_count = &h->got.refcount; | |
4623 | } | |
4624 | else | |
4625 | { | |
b7fcf6f6 | 4626 | bfd_signed_vma *lgot_refs; |
e054468f | 4627 | struct plt_entry **local_plt; |
bac3c8c5 | 4628 | unsigned char *lgot_masks; |
25dbc73a | 4629 | |
b7fcf6f6 AM |
4630 | lgot_refs = elf_local_got_refcounts (ibfd); |
4631 | if (lgot_refs == NULL) | |
4632 | abort (); | |
e054468f AM |
4633 | local_plt = (struct plt_entry **) |
4634 | (lgot_refs + symtab_hdr->sh_info); | |
bac3c8c5 AM |
4635 | lgot_masks = (unsigned char *) |
4636 | (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
4637 | tls_mask = &lgot_masks[r_symndx]; |
4638 | got_count = &lgot_refs[r_symndx]; | |
4639 | } | |
25dbc73a | 4640 | |
37da22e5 AM |
4641 | /* If we don't have old-style __tls_get_addr calls |
4642 | without TLSGD/TLSLD marker relocs, and we haven't | |
4643 | found a new-style __tls_get_addr call with a | |
4644 | marker for this symbol, then we either have a | |
4645 | broken object file or an -mlongcall style | |
4646 | indirect call to __tls_get_addr without a marker. | |
4647 | Disable optimization in this case. */ | |
4648 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
4649 | && !sec->has_tls_get_addr_call | |
4650 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
4651 | != (TLS_TLS | TLS_MARK))) | |
4652 | continue; | |
4653 | ||
4654 | if (expecting_tls_get_addr) | |
4655 | { | |
4656 | struct plt_entry *ent; | |
4657 | bfd_vma addend = 0; | |
4658 | ||
4659 | if (bfd_link_pic (info) | |
23cedd1d AM |
4660 | && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24 |
4661 | || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL)) | |
37da22e5 AM |
4662 | addend = rel[1].r_addend; |
4663 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
4664 | got2, addend); | |
4665 | if (ent != NULL && ent->plt.refcount > 0) | |
4666 | ent->plt.refcount -= 1; | |
4667 | ||
4668 | if (expecting_tls_get_addr == 2) | |
4669 | continue; | |
4670 | } | |
4671 | ||
b7fcf6f6 AM |
4672 | if (tls_set == 0) |
4673 | { | |
4674 | /* We managed to get rid of a got entry. */ | |
4675 | if (*got_count > 0) | |
4676 | *got_count -= 1; | |
4677 | } | |
25dbc73a | 4678 | |
b7fcf6f6 AM |
4679 | *tls_mask |= tls_set; |
4680 | *tls_mask &= ~tls_clear; | |
4681 | } | |
25dbc73a | 4682 | |
b7fcf6f6 AM |
4683 | if (elf_section_data (sec)->relocs != relstart) |
4684 | free (relstart); | |
4685 | } | |
b7fcf6f6 | 4686 | } |
9a23f96e | 4687 | htab->do_tls_opt = 1; |
25dbc73a AM |
4688 | return TRUE; |
4689 | } | |
4690 | \f | |
98bbb1b8 | 4691 | /* Find dynamic relocs for H that apply to read-only sections. */ |
625af618 | 4692 | |
98bbb1b8 AM |
4693 | static asection * |
4694 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
625af618 | 4695 | { |
6061a67d | 4696 | struct elf_dyn_relocs *p; |
625af618 AM |
4697 | |
4698 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
4699 | { | |
4700 | asection *s = p->sec->output_section; | |
4701 | ||
98bbb1b8 AM |
4702 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
4703 | return p->sec; | |
625af618 | 4704 | } |
98bbb1b8 | 4705 | return NULL; |
625af618 AM |
4706 | } |
4707 | ||
287c7eaf AM |
4708 | /* Return true if we have dynamic relocs against H or any of its weak |
4709 | aliases, that apply to read-only sections. Cannot be used after | |
4710 | size_dynamic_sections. */ | |
4711 | ||
4712 | static bfd_boolean | |
4713 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
4714 | { | |
4715 | struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h); | |
4716 | do | |
4717 | { | |
4718 | if (readonly_dynrelocs (&eh->elf)) | |
4719 | return TRUE; | |
4720 | eh = ppc_elf_hash_entry (eh->elf.u.alias); | |
4721 | } while (eh != NULL && &eh->elf != h); | |
4722 | ||
4723 | return FALSE; | |
4724 | } | |
4725 | ||
4726 | /* Return whether H has pc-relative dynamic relocs. */ | |
4727 | ||
4728 | static bfd_boolean | |
4729 | pc_dynrelocs (struct elf_link_hash_entry *h) | |
4730 | { | |
4731 | struct elf_dyn_relocs *p; | |
4732 | ||
4733 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
4734 | if (p->pc_count != 0) | |
4735 | return TRUE; | |
4736 | return FALSE; | |
4737 | } | |
4738 | ||
25dbc73a AM |
4739 | /* Adjust a symbol defined by a dynamic object and referenced by a |
4740 | regular object. The current definition is in some section of the | |
4741 | dynamic object, but we're not including those sections. We have to | |
4742 | change the definition to something the rest of the link can | |
4743 | understand. */ | |
7fce784e | 4744 | |
25dbc73a AM |
4745 | static bfd_boolean |
4746 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
4747 | struct elf_link_hash_entry *h) | |
4748 | { | |
4749 | struct ppc_elf_link_hash_table *htab; | |
4750 | asection *s; | |
7fce784e | 4751 | |
25dbc73a AM |
4752 | #ifdef DEBUG |
4753 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
4754 | h->root.root.string); | |
4755 | #endif | |
252b5132 | 4756 | |
25dbc73a AM |
4757 | /* Make sure we know what is going on here. */ |
4758 | htab = ppc_elf_hash_table (info); | |
4759 | BFD_ASSERT (htab->elf.dynobj != NULL | |
4760 | && (h->needs_plt | |
91e21fb7 | 4761 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 4762 | || h->is_weakalias |
25dbc73a AM |
4763 | || (h->def_dynamic |
4764 | && h->ref_regular | |
4765 | && !h->def_regular))); | |
252b5132 | 4766 | |
25dbc73a AM |
4767 | /* Deal with function syms. */ |
4768 | if (h->type == STT_FUNC | |
e054468f | 4769 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
4770 | || h->needs_plt) |
4771 | { | |
529fe20e AM |
4772 | bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h) |
4773 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
287c7eaf AM |
4774 | /* Discard dyn_relocs when non-pic if we've decided that a |
4775 | function symbol is local. */ | |
4776 | if (!bfd_link_pic (info) && local) | |
4777 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
529fe20e | 4778 | |
25dbc73a AM |
4779 | /* Clear procedure linkage table information for any symbol that |
4780 | won't need a .plt entry. */ | |
a6aa5195 AM |
4781 | struct plt_entry *ent; |
4782 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4783 | if (ent->plt.refcount > 0) | |
4784 | break; | |
4785 | if (ent == NULL | |
2d7ad24e AM |
4786 | || (h->type != STT_GNU_IFUNC |
4787 | && local | |
3e04d765 AM |
4788 | && (htab->can_convert_all_inline_plt |
4789 | || (ppc_elf_hash_entry (h)->tls_mask | |
4790 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
252b5132 | 4791 | { |
25dbc73a | 4792 | /* A PLT entry is not required/allowed when: |
252b5132 | 4793 | |
25dbc73a AM |
4794 | 1. We are not using ld.so; because then the PLT entry |
4795 | can't be set up, so we can't use one. In this case, | |
4796 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 4797 | |
25dbc73a AM |
4798 | 2. GC has rendered the entry unused. |
4799 | ||
4800 | 3. We know for certain that a call to this symbol | |
4801 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 4802 | h->plt.plist = NULL; |
25dbc73a | 4803 | h->needs_plt = 0; |
d1eca1e4 | 4804 | h->pointer_equality_needed = 0; |
25dbc73a | 4805 | } |
625af618 AM |
4806 | else |
4807 | { | |
d1eca1e4 AM |
4808 | /* Taking a function's address in a read/write section |
4809 | doesn't require us to define the function symbol in the | |
1009ef28 | 4810 | executable on a plt call stub. A dynamic reloc can |
f0158f44 AM |
4811 | be used instead, giving better runtime performance. |
4812 | (Calls via that function pointer don't need to bounce | |
4813 | through the plt call stub.) Similarly, use a dynamic | |
4814 | reloc for a weak reference when possible, allowing the | |
4815 | resolution of the symbol to be set at load time rather | |
4816 | than link time. */ | |
4817 | if ((h->pointer_equality_needed | |
3988aed5 AM |
4818 | || (h->non_got_ref |
4819 | && !h->ref_regular_nonweak | |
4820 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
1009ef28 AM |
4821 | && !htab->is_vxworks |
4822 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
98bbb1b8 | 4823 | && !readonly_dynrelocs (h)) |
d1eca1e4 AM |
4824 | { |
4825 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
4826 | /* If we haven't seen a branch reloc and the symbol |
4827 | isn't an ifunc then we don't need a plt entry. */ | |
4828 | if (!h->needs_plt && h->type != STT_GNU_IFUNC) | |
3988aed5 | 4829 | h->plt.plist = NULL; |
d1eca1e4 | 4830 | } |
287c7eaf | 4831 | else if (!bfd_link_pic (info)) |
529fe20e AM |
4832 | /* We are going to be defining the function symbol on the |
4833 | plt stub, so no dyn_relocs needed when non-pic. */ | |
287c7eaf | 4834 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
625af618 | 4835 | } |
d3e454b9 | 4836 | h->protected_def = 0; |
3988aed5 | 4837 | /* Function symbols can't have copy relocs. */ |
25dbc73a | 4838 | return TRUE; |
252b5132 | 4839 | } |
25dbc73a | 4840 | else |
a6aa5195 | 4841 | h->plt.plist = NULL; |
252b5132 | 4842 | |
25dbc73a AM |
4843 | /* If this is a weak symbol, and there is a real definition, the |
4844 | processor independent code will have arranged for us to see the | |
4845 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 4846 | if (h->is_weakalias) |
252b5132 | 4847 | { |
60d67dc8 AM |
4848 | struct elf_link_hash_entry *def = weakdef (h); |
4849 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
4850 | h->root.u.def.section = def->root.u.def.section; | |
4851 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
4852 | if (def->root.u.def.section == htab->elf.sdynbss |
4853 | || def->root.u.def.section == htab->elf.sdynrelro | |
4854 | || def->root.u.def.section == htab->dynsbss) | |
4855 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
25dbc73a AM |
4856 | return TRUE; |
4857 | } | |
dc810e39 | 4858 | |
25dbc73a AM |
4859 | /* This is a reference to a symbol defined by a dynamic object which |
4860 | is not a function. */ | |
252b5132 | 4861 | |
25dbc73a AM |
4862 | /* If we are creating a shared library, we must presume that the |
4863 | only references to the symbol are via the global offset table. | |
4864 | For such cases we need not do anything here; the relocations will | |
4865 | be handled correctly by relocate_section. */ | |
0e1862bb | 4866 | if (bfd_link_pic (info)) |
d3e454b9 AM |
4867 | { |
4868 | h->protected_def = 0; | |
4869 | return TRUE; | |
4870 | } | |
252b5132 | 4871 | |
25dbc73a AM |
4872 | /* If there are no references to this symbol that do not use the |
4873 | GOT, we don't need to generate a copy reloc. */ | |
4874 | if (!h->non_got_ref) | |
d3e454b9 AM |
4875 | { |
4876 | h->protected_def = 0; | |
4877 | return TRUE; | |
4878 | } | |
4879 | ||
4880 | /* Protected variables do not work with .dynbss. The copy in | |
4881 | .dynbss won't be used by the shared library with the protected | |
4882 | definition for the variable. Editing to PIC, or text relocations | |
4883 | are preferable to an incorrect program. */ | |
4884 | if (h->protected_def) | |
4885 | { | |
4886 | if (ELIMINATE_COPY_RELOCS | |
4887 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
4888 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
4889 | && htab->params->pic_fixup == 0 | |
4890 | && info->disable_target_specific_optimizations <= 1) | |
4891 | htab->params->pic_fixup = 1; | |
d3e454b9 AM |
4892 | return TRUE; |
4893 | } | |
25dbc73a | 4894 | |
a127494f AM |
4895 | /* If -z nocopyreloc was given, we won't generate them either. */ |
4896 | if (info->nocopyreloc) | |
529fe20e | 4897 | return TRUE; |
a127494f | 4898 | |
dce2246a | 4899 | /* If we don't find any dynamic relocs in read-only sections, then |
cfd2c773 NS |
4900 | we'll be keeping the dynamic relocs and avoiding the copy reloc. |
4901 | We can't do this if there are any small data relocations. This | |
4902 | doesn't work on VxWorks, where we can not have dynamic | |
4903 | relocations (other than copy and jump slot relocations) in an | |
4904 | executable. */ | |
4dc4a9a5 | 4905 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 4906 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
4907 | && !htab->is_vxworks |
4908 | && !h->def_regular | |
287c7eaf | 4909 | && !alias_readonly_dynrelocs (h)) |
529fe20e | 4910 | return TRUE; |
252b5132 | 4911 | |
25dbc73a AM |
4912 | /* We must allocate the symbol in our .dynbss section, which will |
4913 | become part of the .bss section of the executable. There will be | |
4914 | an entry for this symbol in the .dynsym section. The dynamic | |
4915 | object will contain position independent code, so all references | |
4916 | from the dynamic object to this symbol will go through the global | |
4917 | offset table. The dynamic linker will use the .dynsym entry to | |
4918 | determine the address it must put in the global offset table, so | |
4919 | both the dynamic object and the regular object will refer to the | |
4920 | same memory location for the variable. | |
4921 | ||
4dc4a9a5 DJ |
4922 | Of course, if the symbol is referenced using SDAREL relocs, we |
4923 | must instead allocate it in .sbss. */ | |
4dc4a9a5 | 4924 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 4925 | s = htab->dynsbss; |
5474d94f AM |
4926 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
4927 | s = htab->elf.sdynrelro; | |
25dbc73a | 4928 | else |
9d19e4fd | 4929 | s = htab->elf.sdynbss; |
25dbc73a AM |
4930 | BFD_ASSERT (s != NULL); |
4931 | ||
1d7e9d18 | 4932 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
4933 | { |
4934 | asection *srel; | |
4935 | ||
4a7e5234 AM |
4936 | /* We must generate a R_PPC_COPY reloc to tell the dynamic |
4937 | linker to copy the initial value out of the dynamic object | |
4938 | and into the runtime process image. */ | |
4dc4a9a5 | 4939 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 4940 | srel = htab->relsbss; |
5474d94f AM |
4941 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
4942 | srel = htab->elf.sreldynrelro; | |
25dbc73a | 4943 | else |
9d19e4fd | 4944 | srel = htab->elf.srelbss; |
25dbc73a AM |
4945 | BFD_ASSERT (srel != NULL); |
4946 | srel->size += sizeof (Elf32_External_Rela); | |
4947 | h->needs_copy = 1; | |
4948 | } | |
7619e7c7 | 4949 | |
529fe20e | 4950 | /* We no longer want dyn_relocs. */ |
287c7eaf | 4951 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
6cabe1ea | 4952 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
4953 | } |
4954 | \f | |
ac39eb42 AM |
4955 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
4956 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
4957 | specifying the addend on the plt relocation. For -fpic code, the sym | |
4958 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
4959 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
4960 | |
4961 | static bfd_boolean | |
4962 | add_stub_sym (struct plt_entry *ent, | |
4963 | struct elf_link_hash_entry *h, | |
ac39eb42 | 4964 | struct bfd_link_info *info) |
0ba07910 AM |
4965 | { |
4966 | struct elf_link_hash_entry *sh; | |
4967 | size_t len1, len2, len3; | |
4968 | char *name; | |
ac39eb42 AM |
4969 | const char *stub; |
4970 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
4971 | ||
0e1862bb | 4972 | if (bfd_link_pic (info)) |
ac39eb42 AM |
4973 | stub = ".plt_pic32."; |
4974 | else | |
4975 | stub = ".plt_call32."; | |
0ba07910 AM |
4976 | |
4977 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 4978 | len2 = strlen (stub); |
0ba07910 AM |
4979 | len3 = 0; |
4980 | if (ent->sec) | |
4981 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 4982 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
4983 | if (name == NULL) |
4984 | return FALSE; | |
4985 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
4986 | if (ent->sec) | |
4987 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
4988 | memcpy (name + 8 + len3, stub, len2); |
4989 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
4990 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
4991 | if (sh == NULL) | |
4992 | return FALSE; | |
4993 | if (sh->root.type == bfd_link_hash_new) | |
4994 | { | |
4995 | sh->root.type = bfd_link_hash_defined; | |
4996 | sh->root.u.def.section = htab->glink; | |
4997 | sh->root.u.def.value = ent->glink_offset; | |
4998 | sh->ref_regular = 1; | |
4999 | sh->def_regular = 1; | |
5000 | sh->ref_regular_nonweak = 1; | |
5001 | sh->forced_local = 1; | |
5002 | sh->non_elf = 0; | |
2ec55de3 | 5003 | sh->root.linker_def = 1; |
0ba07910 AM |
5004 | } |
5005 | return TRUE; | |
5006 | } | |
5007 | ||
3b36f7e6 AM |
5008 | /* Allocate NEED contiguous space in .got, and return the offset. |
5009 | Handles allocation of the got header when crossing 32k. */ | |
5010 | ||
5011 | static bfd_vma | |
5012 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5013 | { | |
5014 | bfd_vma where; | |
4a3dc543 | 5015 | unsigned int max_before_header; |
3b36f7e6 | 5016 | |
4a3dc543 | 5017 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 | 5018 | { |
ce558b89 AM |
5019 | where = htab->elf.sgot->size; |
5020 | htab->elf.sgot->size += need; | |
9d8504b1 | 5021 | } |
3b36f7e6 AM |
5022 | else |
5023 | { | |
4a3dc543 RS |
5024 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5025 | if (need <= htab->got_gap) | |
3b36f7e6 | 5026 | { |
4a3dc543 RS |
5027 | where = max_before_header - htab->got_gap; |
5028 | htab->got_gap -= need; | |
5029 | } | |
5030 | else | |
5031 | { | |
ce558b89 AM |
5032 | if (htab->elf.sgot->size + need > max_before_header |
5033 | && htab->elf.sgot->size <= max_before_header) | |
4a3dc543 | 5034 | { |
ce558b89 AM |
5035 | htab->got_gap = max_before_header - htab->elf.sgot->size; |
5036 | htab->elf.sgot->size = max_before_header + htab->got_header_size; | |
4a3dc543 | 5037 | } |
ce558b89 AM |
5038 | where = htab->elf.sgot->size; |
5039 | htab->elf.sgot->size += need; | |
3b36f7e6 | 5040 | } |
3b36f7e6 AM |
5041 | } |
5042 | return where; | |
5043 | } | |
5044 | ||
f15d0b54 AM |
5045 | /* Calculate size of GOT entries for symbol given its TLS_MASK. |
5046 | TLS_LD is excluded because those go in a special GOT slot. */ | |
5047 | ||
5048 | static inline unsigned int | |
5049 | got_entries_needed (int tls_mask) | |
5050 | { | |
5051 | unsigned int need; | |
5052 | if ((tls_mask & TLS_TLS) == 0) | |
5053 | need = 4; | |
5054 | else | |
5055 | { | |
5056 | need = 0; | |
5057 | if ((tls_mask & TLS_GD) != 0) | |
5058 | need += 8; | |
b00a0a86 | 5059 | if ((tls_mask & (TLS_TPREL | TLS_GDIE)) != 0) |
f15d0b54 AM |
5060 | need += 4; |
5061 | if ((tls_mask & TLS_DTPREL) != 0) | |
5062 | need += 4; | |
5063 | } | |
5064 | return need; | |
5065 | } | |
5066 | ||
5067 | /* Calculate size of relocs needed for symbol given its TLS_MASK and | |
5068 | NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at | |
5069 | link time. */ | |
5070 | ||
5071 | static inline unsigned int | |
5072 | got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known) | |
5073 | { | |
5074 | /* All the entries we allocated need relocs. | |
5075 | Except IE in executable with a local symbol. We could also omit | |
5076 | the DTPREL reloc on the second word of a GD entry under the same | |
5077 | condition as that for IE, but ld.so needs to differentiate | |
5078 | LD and GD entries. */ | |
37da22e5 | 5079 | if (known && (tls_mask & TLS_TLS) != 0 |
b00a0a86 | 5080 | && (tls_mask & (TLS_TPREL | TLS_GDIE)) != 0) |
f15d0b54 AM |
5081 | need -= 4; |
5082 | return need * sizeof (Elf32_External_Rela) / 4; | |
5083 | } | |
5084 | ||
46434633 | 5085 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
5086 | |
5087 | static bfd_boolean | |
46434633 AM |
5088 | ensure_undef_dynamic (struct bfd_link_info *info, |
5089 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
5090 | { |
5091 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5092 | ||
5093 | if (htab->dynamic_sections_created | |
46434633 AM |
5094 | && ((info->dynamic_undefined_weak != 0 |
5095 | && h->root.type == bfd_link_hash_undefweak) | |
5096 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
5097 | && h->dynindx == -1 |
5098 | && !h->forced_local | |
5099 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5100 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
5101 | return TRUE; | |
5102 | } | |
5103 | ||
25dbc73a | 5104 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5105 | |
b34976b6 | 5106 | static bfd_boolean |
25dbc73a | 5107 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5108 | { |
25dbc73a AM |
5109 | struct bfd_link_info *info = inf; |
5110 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5111 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5112 | struct elf_dyn_relocs *p; |
f0158f44 | 5113 | bfd_boolean dyn; |
252b5132 | 5114 | |
25dbc73a | 5115 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5116 | return TRUE; |
252b5132 | 5117 | |
7619e7c7 | 5118 | htab = ppc_elf_hash_table (info); |
25dbc73a | 5119 | eh = (struct ppc_elf_link_hash_entry *) h; |
d3e454b9 AM |
5120 | if (eh->elf.got.refcount > 0 |
5121 | || (ELIMINATE_COPY_RELOCS | |
5122 | && !eh->elf.def_regular | |
5123 | && eh->elf.protected_def | |
5124 | && eh->has_addr16_ha | |
5125 | && eh->has_addr16_lo | |
5126 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5127 | { |
d6e14abc AM |
5128 | unsigned int need; |
5129 | ||
46434633 AM |
5130 | /* Make sure this symbol is output as a dynamic symbol. */ |
5131 | if (!ensure_undef_dynamic (info, &eh->elf)) | |
f0158f44 | 5132 | return FALSE; |
252b5132 | 5133 | |
d6e14abc | 5134 | need = 0; |
37da22e5 | 5135 | if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) |
25dbc73a | 5136 | { |
f15d0b54 AM |
5137 | if (!eh->elf.def_dynamic) |
5138 | /* We'll just use htab->tlsld_got.offset. This should | |
5139 | always be the case. It's a little odd if we have | |
5140 | a local dynamic reloc against a non-local symbol. */ | |
5141 | htab->tlsld_got.refcount += 1; | |
5142 | else | |
d6e14abc | 5143 | need += 8; |
d6e14abc | 5144 | } |
f15d0b54 | 5145 | need += got_entries_needed (eh->tls_mask); |
d6e14abc AM |
5146 | if (need == 0) |
5147 | eh->elf.got.offset = (bfd_vma) -1; | |
5148 | else | |
5149 | { | |
3b36f7e6 | 5150 | eh->elf.got.offset = allocate_got (htab, need); |
0e1862bb | 5151 | if ((bfd_link_pic (info) |
f0158f44 AM |
5152 | || (htab->elf.dynamic_sections_created |
5153 | && eh->elf.dynindx != -1 | |
5154 | && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
21d68fcd | 5155 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf)) |
252b5132 | 5156 | { |
f15d0b54 AM |
5157 | asection *rsec; |
5158 | bfd_boolean tprel_known = (bfd_link_executable (info) | |
5159 | && SYMBOL_REFERENCES_LOCAL (info, | |
5160 | &eh->elf)); | |
5161 | ||
5162 | need = got_relocs_needed (eh->tls_mask, need, tprel_known); | |
37da22e5 AM |
5163 | if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD) |
5164 | && eh->elf.def_dynamic) | |
f15d0b54 AM |
5165 | need -= sizeof (Elf32_External_Rela); |
5166 | rsec = htab->elf.srelgot; | |
0bed072f | 5167 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5168 | rsec = htab->elf.irelplt; |
f15d0b54 | 5169 | rsec->size += need; |
252b5132 | 5170 | } |
25dbc73a AM |
5171 | } |
5172 | } | |
5173 | else | |
5174 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5175 | |
954b63d4 AM |
5176 | /* If no dynamic sections we can't have dynamic relocs, except for |
5177 | IFUNCs which are handled even in static executables. */ | |
f0158f44 AM |
5178 | if (!htab->elf.dynamic_sections_created |
5179 | && h->type != STT_GNU_IFUNC) | |
5180 | eh->dyn_relocs = NULL; | |
5181 | ||
529fe20e AM |
5182 | /* Discard relocs on undefined symbols that must be local. */ |
5183 | else if (h->root.type == bfd_link_hash_undefined | |
5184 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
5185 | eh->dyn_relocs = NULL; | |
5186 | ||
5187 | /* Also discard relocs on undefined weak syms with non-default | |
5188 | visibility, or when dynamic_undefined_weak says so. */ | |
5189 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
5190 | eh->dyn_relocs = NULL; | |
5191 | ||
f0158f44 | 5192 | if (eh->dyn_relocs == NULL) |
287c7eaf | 5193 | ; |
252b5132 | 5194 | |
25dbc73a AM |
5195 | /* In the shared -Bsymbolic case, discard space allocated for |
5196 | dynamic pc-relative relocs against symbols which turn out to be | |
5197 | defined in regular objects. For the normal shared case, discard | |
5198 | space for relocs that have become local due to symbol visibility | |
5199 | changes. */ | |
f0158f44 | 5200 | else if (bfd_link_pic (info)) |
25dbc73a AM |
5201 | { |
5202 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 5203 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
5204 | generated via assembly. We want calls to protected symbols to |
5205 | resolve directly to the function rather than going via the plt. | |
5206 | If people want function pointer comparisons to work as expected | |
5207 | then they should avoid writing weird assembly. */ | |
529fe20e | 5208 | if (SYMBOL_CALLS_LOCAL (info, h)) |
25dbc73a | 5209 | { |
6061a67d | 5210 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
5211 | |
5212 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 5213 | { |
25dbc73a AM |
5214 | p->count -= p->pc_count; |
5215 | p->pc_count = 0; | |
5216 | if (p->count == 0) | |
5217 | *pp = p->next; | |
5218 | else | |
5219 | pp = &p->next; | |
252b5132 | 5220 | } |
25dbc73a | 5221 | } |
252b5132 | 5222 | |
3348747a NS |
5223 | if (htab->is_vxworks) |
5224 | { | |
6061a67d | 5225 | struct elf_dyn_relocs **pp; |
3348747a NS |
5226 | |
5227 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5228 | { | |
5229 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
5230 | *pp = p->next; | |
5231 | else | |
5232 | pp = &p->next; | |
5233 | } | |
5234 | } | |
5235 | ||
954b63d4 | 5236 | if (eh->dyn_relocs != NULL) |
25dbc73a | 5237 | { |
46434633 AM |
5238 | /* Make sure this symbol is output as a dynamic symbol. */ |
5239 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5240 | return FALSE; |
25dbc73a AM |
5241 | } |
5242 | } | |
5243 | else if (ELIMINATE_COPY_RELOCS) | |
5244 | { | |
f0158f44 | 5245 | /* For the non-pic case, discard space for relocs against |
25dbc73a AM |
5246 | symbols which turn out to need copy relocs or are not |
5247 | dynamic. */ | |
529fe20e | 5248 | if (h->dynamic_adjusted |
d3e454b9 | 5249 | && !h->def_regular |
529fe20e | 5250 | && !ELF_COMMON_DEF_P (h) |
d3e454b9 AM |
5251 | && !(h->protected_def |
5252 | && eh->has_addr16_ha | |
5253 | && eh->has_addr16_lo | |
5254 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5255 | { |
46434633 AM |
5256 | /* Make sure this symbol is output as a dynamic symbol. */ |
5257 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5258 | return FALSE; |
7619e7c7 | 5259 | |
f0158f44 | 5260 | if (h->dynindx == -1) |
287c7eaf | 5261 | eh->dyn_relocs = NULL; |
25dbc73a | 5262 | } |
f0158f44 | 5263 | else |
287c7eaf | 5264 | eh->dyn_relocs = NULL; |
25dbc73a | 5265 | } |
252b5132 | 5266 | |
f0158f44 | 5267 | /* Allocate space. */ |
25dbc73a AM |
5268 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5269 | { | |
5270 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 5271 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5272 | sreloc = htab->elf.irelplt; |
25dbc73a AM |
5273 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
5274 | } | |
252b5132 | 5275 | |
2d7ad24e AM |
5276 | /* Handle PLT relocs. Done last, after dynindx has settled. |
5277 | We might need a PLT entry when the symbol | |
5278 | a) is dynamic, or | |
5279 | b) is an ifunc, or | |
5280 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
5281 | d) has plt16 relocs and we are linking statically. */ | |
f0158f44 | 5282 | dyn = htab->elf.dynamic_sections_created && h->dynindx != -1; |
2d7ad24e AM |
5283 | if (dyn |
5284 | || h->type == STT_GNU_IFUNC | |
5285 | || (h->needs_plt && h->dynamic_adjusted) | |
5286 | || (h->needs_plt | |
5287 | && h->def_regular | |
5288 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 5289 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
5290 | && (ppc_elf_hash_entry (h)->tls_mask |
5291 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
f0158f44 AM |
5292 | { |
5293 | struct plt_entry *ent; | |
5294 | bfd_boolean doneone = FALSE; | |
2d7ad24e | 5295 | bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1; |
f0158f44 AM |
5296 | |
5297 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5298 | if (ent->plt.refcount > 0) | |
5299 | { | |
5300 | asection *s = htab->elf.splt; | |
5301 | ||
5302 | if (!dyn) | |
2d7ad24e AM |
5303 | { |
5304 | if (h->type == STT_GNU_IFUNC) | |
5305 | s = htab->elf.iplt; | |
5306 | else | |
5307 | s = htab->pltlocal; | |
5308 | } | |
f0158f44 AM |
5309 | |
5310 | if (htab->plt_type == PLT_NEW || !dyn) | |
5311 | { | |
5312 | if (!doneone) | |
5313 | { | |
5314 | plt_offset = s->size; | |
5315 | s->size += 4; | |
5316 | } | |
5317 | ent->plt.offset = plt_offset; | |
5318 | ||
2d7ad24e AM |
5319 | if (s == htab->pltlocal) |
5320 | ent->glink_offset = glink_offset; | |
5321 | else | |
f0158f44 | 5322 | { |
2d7ad24e AM |
5323 | s = htab->glink; |
5324 | if (!doneone || bfd_link_pic (info)) | |
5325 | { | |
5326 | glink_offset = s->size; | |
5327 | s->size += GLINK_ENTRY_SIZE (htab, h); | |
5328 | } | |
5329 | if (!doneone | |
5330 | && !bfd_link_pic (info) | |
5331 | && h->def_dynamic | |
5332 | && !h->def_regular) | |
5333 | { | |
5334 | h->root.u.def.section = s; | |
5335 | h->root.u.def.value = glink_offset; | |
5336 | } | |
5337 | ent->glink_offset = glink_offset; | |
f0158f44 | 5338 | |
2d7ad24e AM |
5339 | if (htab->params->emit_stub_syms |
5340 | && !add_stub_sym (ent, h, info)) | |
5341 | return FALSE; | |
5342 | } | |
f0158f44 AM |
5343 | } |
5344 | else | |
5345 | { | |
5346 | if (!doneone) | |
5347 | { | |
5348 | /* If this is the first .plt entry, make room | |
5349 | for the special first entry. */ | |
5350 | if (s->size == 0) | |
5351 | s->size += htab->plt_initial_entry_size; | |
5352 | ||
5353 | /* The PowerPC PLT is actually composed of two | |
5354 | parts, the first part is 2 words (for a load | |
5355 | and a jump), and then there is a remaining | |
5356 | word available at the end. */ | |
5357 | plt_offset = (htab->plt_initial_entry_size | |
5358 | + (htab->plt_slot_size | |
5359 | * ((s->size | |
5360 | - htab->plt_initial_entry_size) | |
5361 | / htab->plt_entry_size))); | |
5362 | ||
5363 | /* If this symbol is not defined in a regular | |
5364 | file, and we are not generating a shared | |
5365 | library, then set the symbol to this location | |
5366 | in the .plt. This is to avoid text | |
5367 | relocations, and is required to make | |
5368 | function pointers compare as equal between | |
5369 | the normal executable and the shared library. */ | |
5370 | if (! bfd_link_pic (info) | |
5371 | && h->def_dynamic | |
5372 | && !h->def_regular) | |
5373 | { | |
5374 | h->root.u.def.section = s; | |
5375 | h->root.u.def.value = plt_offset; | |
5376 | } | |
5377 | ||
5378 | /* Make room for this entry. */ | |
5379 | s->size += htab->plt_entry_size; | |
5380 | /* After the 8192nd entry, room for two entries | |
5381 | is allocated. */ | |
5382 | if (htab->plt_type == PLT_OLD | |
5383 | && (s->size - htab->plt_initial_entry_size) | |
5384 | / htab->plt_entry_size | |
5385 | > PLT_NUM_SINGLE_ENTRIES) | |
5386 | s->size += htab->plt_entry_size; | |
5387 | } | |
5388 | ent->plt.offset = plt_offset; | |
5389 | } | |
5390 | ||
5391 | /* We also need to make an entry in the .rela.plt section. */ | |
5392 | if (!doneone) | |
5393 | { | |
5394 | if (!dyn) | |
2d7ad24e AM |
5395 | { |
5396 | if (h->type == STT_GNU_IFUNC) | |
5397 | { | |
5398 | s = htab->elf.irelplt; | |
5399 | s->size += sizeof (Elf32_External_Rela); | |
5400 | } | |
5401 | else if (bfd_link_pic (info)) | |
5402 | { | |
5403 | s = htab->relpltlocal; | |
5404 | s->size += sizeof (Elf32_External_Rela); | |
5405 | } | |
5406 | } | |
f0158f44 AM |
5407 | else |
5408 | { | |
5409 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
5410 | ||
5411 | if (htab->plt_type == PLT_VXWORKS) | |
5412 | { | |
5413 | /* Allocate space for the unloaded relocations. */ | |
5414 | if (!bfd_link_pic (info) | |
5415 | && htab->elf.dynamic_sections_created) | |
5416 | { | |
5417 | if (ent->plt.offset | |
5418 | == (bfd_vma) htab->plt_initial_entry_size) | |
5419 | { | |
5420 | htab->srelplt2->size | |
5421 | += (sizeof (Elf32_External_Rela) | |
5422 | * VXWORKS_PLTRESOLVE_RELOCS); | |
5423 | } | |
5424 | ||
5425 | htab->srelplt2->size | |
5426 | += (sizeof (Elf32_External_Rela) | |
5427 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
5428 | } | |
5429 | ||
5430 | /* Every PLT entry has an associated GOT entry in | |
5431 | .got.plt. */ | |
5432 | htab->elf.sgotplt->size += 4; | |
5433 | } | |
5434 | } | |
5435 | doneone = TRUE; | |
5436 | } | |
5437 | } | |
5438 | else | |
5439 | ent->plt.offset = (bfd_vma) -1; | |
5440 | ||
5441 | if (!doneone) | |
5442 | { | |
5443 | h->plt.plist = NULL; | |
5444 | h->needs_plt = 0; | |
5445 | } | |
5446 | } | |
5447 | else | |
5448 | { | |
5449 | h->plt.plist = NULL; | |
5450 | h->needs_plt = 0; | |
5451 | } | |
5452 | ||
25dbc73a AM |
5453 | return TRUE; |
5454 | } | |
7619e7c7 | 5455 | |
625af618 AM |
5456 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
5457 | read-only sections. */ | |
7619e7c7 | 5458 | |
25dbc73a | 5459 | static bfd_boolean |
0caf6c82 | 5460 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
25dbc73a | 5461 | { |
98bbb1b8 | 5462 | asection *sec; |
0caf6c82 | 5463 | |
25dbc73a AM |
5464 | if (h->root.type == bfd_link_hash_indirect) |
5465 | return TRUE; | |
252b5132 | 5466 | |
98bbb1b8 AM |
5467 | sec = readonly_dynrelocs (h); |
5468 | if (sec != NULL) | |
25dbc73a | 5469 | { |
98bbb1b8 AM |
5470 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
5471 | ||
0caf6c82 | 5472 | info->flags |= DF_TEXTREL; |
98bbb1b8 | 5473 | info->callbacks->minfo |
c1c8c1ef | 5474 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 5475 | sec->owner, h->root.root.string, sec); |
ee05f2fe | 5476 | |
625af618 AM |
5477 | /* Not an error, just cut short the traversal. */ |
5478 | return FALSE; | |
25dbc73a AM |
5479 | } |
5480 | return TRUE; | |
5481 | } | |
5482 | ||
6177242a AM |
5483 | static const unsigned char glink_eh_frame_cie[] = |
5484 | { | |
5485 | 0, 0, 0, 16, /* length. */ | |
5486 | 0, 0, 0, 0, /* id. */ | |
5487 | 1, /* CIE version. */ | |
5488 | 'z', 'R', 0, /* Augmentation string. */ | |
5489 | 4, /* Code alignment. */ | |
5490 | 0x7c, /* Data alignment. */ | |
5491 | 65, /* RA reg. */ | |
5492 | 1, /* Augmentation size. */ | |
5493 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
5494 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
5495 | }; | |
5496 | ||
25dbc73a AM |
5497 | /* Set the sizes of the dynamic sections. */ |
5498 | ||
5499 | static bfd_boolean | |
93d1b056 | 5500 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
5501 | struct bfd_link_info *info) |
5502 | { | |
5503 | struct ppc_elf_link_hash_table *htab; | |
5504 | asection *s; | |
5505 | bfd_boolean relocs; | |
5506 | bfd *ibfd; | |
7fce784e | 5507 | |
252b5132 | 5508 | #ifdef DEBUG |
25dbc73a | 5509 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 5510 | #endif |
252b5132 | 5511 | |
25dbc73a AM |
5512 | htab = ppc_elf_hash_table (info); |
5513 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 5514 | |
25dbc73a AM |
5515 | if (elf_hash_table (info)->dynamic_sections_created) |
5516 | { | |
5517 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 5518 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 5519 | { |
3d4d4302 | 5520 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
5521 | BFD_ASSERT (s != NULL); |
5522 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5523 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5524 | } | |
5525 | } | |
252b5132 | 5526 | |
4a3dc543 | 5527 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 5528 | htab->got_header_size = 16; |
4a3dc543 | 5529 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 5530 | htab->got_header_size = 12; |
252b5132 | 5531 | |
25dbc73a AM |
5532 | /* Set up .got offsets for local syms, and space for local dynamic |
5533 | relocs. */ | |
c72f2fb2 | 5534 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
5535 | { |
5536 | bfd_signed_vma *local_got; | |
5537 | bfd_signed_vma *end_local_got; | |
e054468f AM |
5538 | struct plt_entry **local_plt; |
5539 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
5540 | char *lgot_masks; |
5541 | bfd_size_type locsymcount; | |
5542 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 5543 | |
0c8d6e5c | 5544 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 5545 | continue; |
7fce784e | 5546 | |
25dbc73a AM |
5547 | for (s = ibfd->sections; s != NULL; s = s->next) |
5548 | { | |
f95f8542 | 5549 | struct ppc_dyn_relocs *p; |
252b5132 | 5550 | |
f95f8542 | 5551 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
5552 | elf_section_data (s)->local_dynrel); |
5553 | p != NULL; | |
5554 | p = p->next) | |
5555 | { | |
5556 | if (!bfd_is_abs_section (p->sec) | |
5557 | && bfd_is_abs_section (p->sec->output_section)) | |
5558 | { | |
5559 | /* Input section has been discarded, either because | |
5560 | it is a copy of a linkonce section or due to | |
5561 | linker script /DISCARD/, so we'll be discarding | |
5562 | the relocs too. */ | |
7fce784e | 5563 | } |
3348747a NS |
5564 | else if (htab->is_vxworks |
5565 | && strcmp (p->sec->output_section->name, | |
5566 | ".tls_vars") == 0) | |
5567 | { | |
5568 | /* Relocations in vxworks .tls_vars sections are | |
5569 | handled specially by the loader. */ | |
5570 | } | |
25dbc73a | 5571 | else if (p->count != 0) |
7fce784e | 5572 | { |
25f23106 | 5573 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 5574 | if (p->ifunc) |
ce558b89 | 5575 | sreloc = htab->elf.irelplt; |
25f23106 | 5576 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
25dbc73a AM |
5577 | if ((p->sec->output_section->flags |
5578 | & (SEC_READONLY | SEC_ALLOC)) | |
5579 | == (SEC_READONLY | SEC_ALLOC)) | |
0caf6c82 L |
5580 | { |
5581 | info->flags |= DF_TEXTREL; | |
871b3ab2 | 5582 | info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), |
0caf6c82 L |
5583 | p->sec->owner, p->sec); |
5584 | } | |
7fce784e | 5585 | } |
252b5132 | 5586 | } |
252b5132 | 5587 | } |
252b5132 | 5588 | |
25dbc73a AM |
5589 | local_got = elf_local_got_refcounts (ibfd); |
5590 | if (!local_got) | |
5591 | continue; | |
252b5132 | 5592 | |
0ffa91dd | 5593 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
5594 | locsymcount = symtab_hdr->sh_info; |
5595 | end_local_got = local_got + locsymcount; | |
e054468f AM |
5596 | local_plt = (struct plt_entry **) end_local_got; |
5597 | end_local_plt = local_plt + locsymcount; | |
5598 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 5599 | |
25dbc73a AM |
5600 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
5601 | if (*local_got > 0) | |
5602 | { | |
f15d0b54 | 5603 | unsigned int need; |
37da22e5 | 5604 | if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) |
f15d0b54 AM |
5605 | htab->tlsld_got.refcount += 1; |
5606 | need = got_entries_needed (*lgot_masks); | |
d6e14abc AM |
5607 | if (need == 0) |
5608 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
5609 | else |
5610 | { | |
3b36f7e6 | 5611 | *local_got = allocate_got (htab, need); |
0e1862bb | 5612 | if (bfd_link_pic (info)) |
0bed072f | 5613 | { |
f15d0b54 AM |
5614 | asection *srel; |
5615 | bfd_boolean tprel_known = bfd_link_executable (info); | |
5616 | ||
5617 | need = got_relocs_needed (*lgot_masks, need, tprel_known); | |
5618 | srel = htab->elf.srelgot; | |
37da22e5 | 5619 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
ce558b89 | 5620 | srel = htab->elf.irelplt; |
f15d0b54 | 5621 | srel->size += need; |
0bed072f | 5622 | } |
25dbc73a AM |
5623 | } |
5624 | } | |
5625 | else | |
5626 | *local_got = (bfd_vma) -1; | |
e054468f AM |
5627 | |
5628 | if (htab->is_vxworks) | |
5629 | continue; | |
5630 | ||
5631 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
2d7ad24e AM |
5632 | lgot_masks = (char *) end_local_plt; |
5633 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
5634 | { |
5635 | struct plt_entry *ent; | |
5636 | bfd_boolean doneone = FALSE; | |
2d7ad24e | 5637 | bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1; |
e054468f AM |
5638 | |
5639 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
5640 | if (ent->plt.refcount > 0) | |
5641 | { | |
2d7ad24e AM |
5642 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
5643 | s = htab->elf.iplt; | |
3e04d765 AM |
5644 | else if (htab->can_convert_all_inline_plt |
5645 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
5646 | { |
5647 | ent->plt.offset = (bfd_vma) -1; | |
5648 | continue; | |
5649 | } | |
5650 | else | |
5651 | s = htab->pltlocal; | |
e054468f AM |
5652 | |
5653 | if (!doneone) | |
5654 | { | |
5655 | plt_offset = s->size; | |
5656 | s->size += 4; | |
5657 | } | |
5658 | ent->plt.offset = plt_offset; | |
5659 | ||
2d7ad24e | 5660 | if (s != htab->pltlocal && (!doneone || bfd_link_pic (info))) |
e054468f | 5661 | { |
2d7ad24e | 5662 | s = htab->glink; |
e054468f | 5663 | glink_offset = s->size; |
9e390558 | 5664 | s->size += GLINK_ENTRY_SIZE (htab, NULL); |
e054468f AM |
5665 | } |
5666 | ent->glink_offset = glink_offset; | |
5667 | ||
5668 | if (!doneone) | |
5669 | { | |
2d7ad24e AM |
5670 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
5671 | { | |
5672 | s = htab->elf.irelplt; | |
5673 | s->size += sizeof (Elf32_External_Rela); | |
5674 | } | |
5675 | else if (bfd_link_pic (info)) | |
5676 | { | |
5677 | s = htab->relpltlocal; | |
5678 | s->size += sizeof (Elf32_External_Rela); | |
5679 | } | |
e054468f AM |
5680 | doneone = TRUE; |
5681 | } | |
5682 | } | |
5683 | else | |
5684 | ent->plt.offset = (bfd_vma) -1; | |
5685 | } | |
25dbc73a | 5686 | } |
252b5132 | 5687 | |
b7fcf6f6 AM |
5688 | /* Allocate space for global sym dynamic relocs. */ |
5689 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
5690 | ||
3b36f7e6 AM |
5691 | if (htab->tlsld_got.refcount > 0) |
5692 | { | |
5693 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
0e1862bb | 5694 | if (bfd_link_pic (info)) |
ce558b89 | 5695 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3b36f7e6 AM |
5696 | } |
5697 | else | |
5698 | htab->tlsld_got.offset = (bfd_vma) -1; | |
5699 | ||
ce558b89 | 5700 | if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
5701 | { |
5702 | unsigned int g_o_t = 32768; | |
5703 | ||
4d962050 AM |
5704 | /* If we haven't allocated the header, do so now. When we get here, |
5705 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
5706 | or 32780 to 65536 (header allocated). For new plt/got, the | |
5707 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
ce558b89 | 5708 | if (htab->elf.sgot->size <= 32768) |
3b36f7e6 | 5709 | { |
ce558b89 | 5710 | g_o_t = htab->elf.sgot->size; |
4a3dc543 | 5711 | if (htab->plt_type == PLT_OLD) |
4d962050 | 5712 | g_o_t += 4; |
ce558b89 | 5713 | htab->elf.sgot->size += htab->got_header_size; |
3b36f7e6 | 5714 | } |
3b36f7e6 AM |
5715 | |
5716 | htab->elf.hgot->root.u.def.value = g_o_t; | |
5717 | } | |
0e1862bb | 5718 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
5719 | { |
5720 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
5721 | |
5722 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
5723 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 5724 | } |
15bfcc77 AM |
5725 | if (info->emitrelocations) |
5726 | { | |
5727 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
5728 | ||
5729 | if (sda != NULL && sda->ref_regular) | |
5730 | sda->root.u.def.section->flags |= SEC_KEEP; | |
5731 | sda = htab->sdata[1].sym; | |
5732 | if (sda != NULL && sda->ref_regular) | |
5733 | sda->root.u.def.section->flags |= SEC_KEEP; | |
5734 | } | |
3b36f7e6 | 5735 | |
e054468f AM |
5736 | if (htab->glink != NULL |
5737 | && htab->glink->size != 0 | |
5738 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
5739 | { |
5740 | htab->glink_pltresolve = htab->glink->size; | |
9e390558 AM |
5741 | /* Space for the branch table. */ |
5742 | htab->glink->size | |
5743 | += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4; | |
86b9da88 | 5744 | /* Pad out to align the start of PLTresolve. */ |
5446cbdf AM |
5745 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
5746 | ? 63 : 15); | |
d7128ce4 | 5747 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 5748 | |
5446cbdf | 5749 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
5750 | { |
5751 | struct elf_link_hash_entry *sh; | |
5752 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
5753 | TRUE, FALSE, FALSE); | |
5754 | if (sh == NULL) | |
5755 | return FALSE; | |
5756 | if (sh->root.type == bfd_link_hash_new) | |
5757 | { | |
5758 | sh->root.type = bfd_link_hash_defined; | |
5759 | sh->root.u.def.section = htab->glink; | |
5760 | sh->root.u.def.value = htab->glink_pltresolve; | |
5761 | sh->ref_regular = 1; | |
5762 | sh->def_regular = 1; | |
5763 | sh->ref_regular_nonweak = 1; | |
5764 | sh->forced_local = 1; | |
5765 | sh->non_elf = 0; | |
2ec55de3 | 5766 | sh->root.linker_def = 1; |
0ba07910 AM |
5767 | } |
5768 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
5769 | TRUE, FALSE, FALSE); | |
5770 | if (sh == NULL) | |
5771 | return FALSE; | |
5772 | if (sh->root.type == bfd_link_hash_new) | |
5773 | { | |
5774 | sh->root.type = bfd_link_hash_defined; | |
5775 | sh->root.u.def.section = htab->glink; | |
5776 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
5777 | sh->ref_regular = 1; | |
5778 | sh->def_regular = 1; | |
5779 | sh->ref_regular_nonweak = 1; | |
5780 | sh->forced_local = 1; | |
5781 | sh->non_elf = 0; | |
2ec55de3 | 5782 | sh->root.linker_def = 1; |
0ba07910 AM |
5783 | } |
5784 | } | |
d7128ce4 AM |
5785 | } |
5786 | ||
6177242a AM |
5787 | if (htab->glink != NULL |
5788 | && htab->glink->size != 0 | |
5789 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
5790 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
5791 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
5792 | { |
5793 | s = htab->glink_eh_frame; | |
5794 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 5795 | if (bfd_link_pic (info)) |
6177242a AM |
5796 | { |
5797 | s->size += 4; | |
5798 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
5799 | s->size += 4; | |
5800 | } | |
5801 | } | |
5802 | ||
25dbc73a AM |
5803 | /* We've now determined the sizes of the various dynamic sections. |
5804 | Allocate memory for them. */ | |
5805 | relocs = FALSE; | |
5806 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 5807 | { |
9d8504b1 PB |
5808 | bfd_boolean strip_section = TRUE; |
5809 | ||
25dbc73a AM |
5810 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
5811 | continue; | |
252b5132 | 5812 | |
ce558b89 AM |
5813 | if (s == htab->elf.splt |
5814 | || s == htab->elf.sgot) | |
25dbc73a | 5815 | { |
9d8504b1 PB |
5816 | /* We'd like to strip these sections if they aren't needed, but if |
5817 | we've exported dynamic symbols from them we must leave them. | |
5818 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 5819 | if (htab->elf.hplt != NULL) |
9d8504b1 | 5820 | strip_section = FALSE; |
25dbc73a AM |
5821 | /* Strip this section if we don't need it; see the |
5822 | comment below. */ | |
5823 | } | |
ce558b89 | 5824 | else if (s == htab->elf.iplt |
2d7ad24e | 5825 | || s == htab->pltlocal |
e054468f | 5826 | || s == htab->glink |
6177242a | 5827 | || s == htab->glink_eh_frame |
ce558b89 | 5828 | || s == htab->elf.sgotplt |
e054468f | 5829 | || s == htab->sbss |
9d19e4fd | 5830 | || s == htab->elf.sdynbss |
5474d94f | 5831 | || s == htab->elf.sdynrelro |
15bfcc77 | 5832 | || s == htab->dynsbss) |
25dbc73a | 5833 | { |
c9a2f333 | 5834 | /* Strip these too. */ |
25dbc73a | 5835 | } |
15bfcc77 AM |
5836 | else if (s == htab->sdata[0].section |
5837 | || s == htab->sdata[1].section) | |
5838 | { | |
5839 | strip_section = (s->flags & SEC_KEEP) == 0; | |
5840 | } | |
a0f49396 NC |
5841 | else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s), |
5842 | ".rela")) | |
25dbc73a | 5843 | { |
c456f082 | 5844 | if (s->size != 0) |
25dbc73a AM |
5845 | { |
5846 | /* Remember whether there are any relocation sections. */ | |
5847 | relocs = TRUE; | |
252b5132 | 5848 | |
25dbc73a AM |
5849 | /* We use the reloc_count field as a counter if we need |
5850 | to copy relocs into the output file. */ | |
5851 | s->reloc_count = 0; | |
252b5132 RH |
5852 | } |
5853 | } | |
25dbc73a AM |
5854 | else |
5855 | { | |
5856 | /* It's not one of our sections, so don't allocate space. */ | |
5857 | continue; | |
5858 | } | |
252b5132 | 5859 | |
9d8504b1 | 5860 | if (s->size == 0 && strip_section) |
25dbc73a | 5861 | { |
c456f082 AM |
5862 | /* If we don't need this section, strip it from the |
5863 | output file. This is mostly to handle .rela.bss and | |
5864 | .rela.plt. We must create both sections in | |
5865 | create_dynamic_sections, because they must be created | |
5866 | before the linker maps input sections to output | |
5867 | sections. The linker does that before | |
5868 | adjust_dynamic_symbol is called, and it is that | |
5869 | function which decides whether anything needs to go | |
5870 | into these sections. */ | |
8423293d | 5871 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
5872 | continue; |
5873 | } | |
7fce784e | 5874 | |
d7128ce4 | 5875 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
5876 | continue; |
5877 | ||
25dbc73a AM |
5878 | /* Allocate memory for the section contents. */ |
5879 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
5880 | if (s->contents == NULL) | |
5881 | return FALSE; | |
5882 | } | |
252b5132 | 5883 | |
25dbc73a | 5884 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 5885 | { |
25dbc73a AM |
5886 | /* Add some entries to the .dynamic section. We fill in the |
5887 | values later, in ppc_elf_finish_dynamic_sections, but we | |
5888 | must add the entries now so that we get the correct size for | |
5889 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5890 | dynamic linker and used by the debugger. */ | |
5891 | #define add_dynamic_entry(TAG, VAL) \ | |
5892 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 5893 | |
0e1862bb | 5894 | if (bfd_link_executable (info)) |
7619e7c7 | 5895 | { |
25dbc73a AM |
5896 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
5897 | return FALSE; | |
7619e7c7 AM |
5898 | } |
5899 | ||
ce558b89 | 5900 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
7619e7c7 | 5901 | { |
25dbc73a AM |
5902 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
5903 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
5904 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5905 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
5906 | return FALSE; | |
5907 | } | |
7619e7c7 | 5908 | |
c7e17e05 AM |
5909 | if (htab->plt_type == PLT_NEW |
5910 | && htab->glink != NULL | |
5911 | && htab->glink->size != 0) | |
d7128ce4 | 5912 | { |
1fe44d79 | 5913 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 5914 | return FALSE; |
5446cbdf | 5915 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
5916 | && htab->tls_get_addr != NULL |
5917 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 5918 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 5919 | return FALSE; |
d7128ce4 AM |
5920 | } |
5921 | ||
25dbc73a AM |
5922 | if (relocs) |
5923 | { | |
5924 | if (!add_dynamic_entry (DT_RELA, 0) | |
5925 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5926 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
5927 | return FALSE; | |
5928 | } | |
7619e7c7 | 5929 | |
25dbc73a AM |
5930 | /* If any dynamic relocs apply to a read-only section, then we |
5931 | need a DT_TEXTREL entry. */ | |
5932 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 5933 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 5934 | info); |
7619e7c7 | 5935 | |
25dbc73a AM |
5936 | if ((info->flags & DF_TEXTREL) != 0) |
5937 | { | |
5938 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5939 | return FALSE; | |
7619e7c7 | 5940 | } |
7a2b07ff NS |
5941 | if (htab->is_vxworks |
5942 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
5943 | return FALSE; | |
5944 | } | |
25dbc73a AM |
5945 | #undef add_dynamic_entry |
5946 | ||
7e01508c AM |
5947 | if (htab->glink_eh_frame != NULL |
5948 | && htab->glink_eh_frame->contents != NULL) | |
5949 | { | |
5950 | unsigned char *p = htab->glink_eh_frame->contents; | |
5951 | bfd_vma val; | |
5952 | ||
5953 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
5954 | /* CIE length (rewrite in case little-endian). */ | |
5955 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
5956 | p += sizeof (glink_eh_frame_cie); | |
5957 | /* FDE length. */ | |
5958 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
5959 | bfd_put_32 (htab->elf.dynobj, val, p); | |
5960 | p += 4; | |
5961 | /* CIE pointer. */ | |
5962 | val = p - htab->glink_eh_frame->contents; | |
5963 | bfd_put_32 (htab->elf.dynobj, val, p); | |
5964 | p += 4; | |
5965 | /* Offset to .glink. Set later. */ | |
5966 | p += 4; | |
5967 | /* .glink size. */ | |
5968 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
5969 | p += 4; | |
5970 | /* Augmentation. */ | |
5971 | p += 1; | |
5972 | ||
0e1862bb | 5973 | if (bfd_link_pic (info) |
7e01508c AM |
5974 | && htab->elf.dynamic_sections_created) |
5975 | { | |
5976 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
5977 | if (adv < 64) | |
5978 | *p++ = DW_CFA_advance_loc + adv; | |
5979 | else if (adv < 256) | |
5980 | { | |
5981 | *p++ = DW_CFA_advance_loc1; | |
5982 | *p++ = adv; | |
5983 | } | |
5984 | else if (adv < 65536) | |
5985 | { | |
5986 | *p++ = DW_CFA_advance_loc2; | |
5987 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
5988 | p += 2; | |
5989 | } | |
5990 | else | |
5991 | { | |
5992 | *p++ = DW_CFA_advance_loc4; | |
5993 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
5994 | p += 4; | |
5995 | } | |
5996 | *p++ = DW_CFA_register; | |
5997 | *p++ = 65; | |
5998 | p++; | |
5999 | *p++ = DW_CFA_advance_loc + 4; | |
6000 | *p++ = DW_CFA_restore_extended; | |
6001 | *p++ = 65; | |
6002 | } | |
6003 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
6004 | == htab->glink_eh_frame->size); | |
6005 | } | |
6006 | ||
7619e7c7 AM |
6007 | return TRUE; |
6008 | } | |
0eb4a168 | 6009 | |
93d1b056 AM |
6010 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
6011 | if it looks like nothing is using them. */ | |
6012 | ||
6013 | static void | |
6014 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
6015 | { | |
6016 | struct elf_link_hash_entry *sda = lsect->sym; | |
6017 | ||
6018 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
6019 | { | |
6020 | asection *s; | |
6021 | ||
6022 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6023 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6024 | { | |
6025 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6026 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6027 | { | |
6028 | sda->def_regular = 0; | |
6029 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6030 | sda->ref_dynamic = 1; | |
6031 | sda->forced_local = 0; | |
6032 | } | |
6033 | } | |
6034 | } | |
6035 | } | |
6036 | ||
6037 | void | |
6038 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6039 | { | |
6040 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6041 | ||
6042 | if (htab != NULL) | |
6043 | { | |
6044 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6045 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6046 | } | |
6047 | } | |
6048 | ||
6049 | ||
0eb4a168 AM |
6050 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6051 | ||
6052 | static bfd_boolean | |
6053 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6054 | { | |
6055 | if (h->plt.plist != NULL | |
6056 | && !h->def_regular | |
6057 | && (!h->pointer_equality_needed | |
6058 | || !h->ref_regular_nonweak)) | |
6059 | return FALSE; | |
6060 | ||
6061 | return _bfd_elf_hash_symbol (h); | |
6062 | } | |
25dbc73a AM |
6063 | \f |
6064 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6065 | ||
01017ef8 NS |
6066 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6067 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6068 | static const int shared_stub_entry[] = |
6069 | { | |
6070 | 0x7c0802a6, /* mflr 0 */ | |
6071 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6072 | 0x7d8802a6, /* mflr 12 */ |
6073 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6074 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6075 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6076 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6077 | 0x4e800420, /* bctr */ |
6078 | }; | |
6079 | ||
6080 | static const int stub_entry[] = | |
6081 | { | |
01017ef8 NS |
6082 | 0x3d800000, /* lis 12,xxx@ha */ |
6083 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6084 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6085 | 0x4e800420, /* bctr */ |
6086 | }; | |
6087 | ||
5446cbdf AM |
6088 | struct ppc_elf_relax_info |
6089 | { | |
6090 | unsigned int workaround_size; | |
d3e454b9 | 6091 | unsigned int picfixup_size; |
5446cbdf AM |
6092 | }; |
6093 | ||
6094 | /* This function implements long branch trampolines, and the ppc476 | |
6095 | icache bug workaround. Any section needing trampolines or patch | |
6096 | space for the workaround has its size extended so that we can | |
53291d1f | 6097 | add trampolines at the end of the section. */ |
5446cbdf | 6098 | |
25dbc73a AM |
6099 | static bfd_boolean |
6100 | ppc_elf_relax_section (bfd *abfd, | |
6101 | asection *isec, | |
6102 | struct bfd_link_info *link_info, | |
6103 | bfd_boolean *again) | |
6104 | { | |
d3e454b9 | 6105 | struct one_branch_fixup |
25dbc73a | 6106 | { |
d3e454b9 | 6107 | struct one_branch_fixup *next; |
25dbc73a | 6108 | asection *tsec; |
01017ef8 NS |
6109 | /* Final link, can use the symbol offset. For a |
6110 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6111 | bfd_vma toff; |
6112 | bfd_vma trampoff; | |
6113 | }; | |
7619e7c7 | 6114 | |
25dbc73a AM |
6115 | Elf_Internal_Shdr *symtab_hdr; |
6116 | bfd_byte *contents = NULL; | |
6117 | Elf_Internal_Sym *isymbuf = NULL; | |
6118 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6119 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 6120 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 6121 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6122 | unsigned changes = 0; |
5446cbdf | 6123 | bfd_boolean workaround_change; |
d7128ce4 | 6124 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 6125 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 6126 | asection *got2; |
50248c89 | 6127 | bfd_boolean maybe_pasted; |
7619e7c7 | 6128 | |
25dbc73a | 6129 | *again = FALSE; |
7619e7c7 | 6130 | |
5446cbdf | 6131 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6132 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6133 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6134 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6135 | || isec->size < 4) | |
25dbc73a | 6136 | return TRUE; |
7619e7c7 | 6137 | |
c8a1f254 NS |
6138 | /* We cannot represent the required PIC relocs in the output, so don't |
6139 | do anything. The linker doesn't support mixing -shared and -r | |
6140 | anyway. */ | |
0e1862bb | 6141 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 6142 | return TRUE; |
5b914448 | 6143 | |
5446cbdf AM |
6144 | htab = ppc_elf_hash_table (link_info); |
6145 | if (htab == NULL) | |
6146 | return TRUE; | |
6147 | ||
6148 | isec->size = (isec->size + 3) & -4; | |
6149 | if (isec->rawsize == 0) | |
6150 | isec->rawsize = isec->size; | |
6151 | trampbase = isec->size; | |
6152 | ||
53291d1f AM |
6153 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6154 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6155 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6156 | ||
d3e454b9 AM |
6157 | if (htab->params->ppc476_workaround |
6158 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
6159 | { |
6160 | if (elf_section_data (isec)->sec_info == NULL) | |
6161 | { | |
5446cbdf AM |
6162 | elf_section_data (isec)->sec_info |
6163 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6164 | if (elf_section_data (isec)->sec_info == NULL) | |
6165 | return FALSE; | |
6166 | } | |
6167 | relax_info = elf_section_data (isec)->sec_info; | |
6168 | trampbase -= relax_info->workaround_size; | |
6169 | } | |
6170 | ||
50248c89 AM |
6171 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6172 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6173 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6174 | trampoff = trampbase; |
6175 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6176 | trampoff += 4; |
7619e7c7 | 6177 | |
0ffa91dd | 6178 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
6179 | picfixup_size = 0; |
6180 | if (htab->params->branch_trampolines | |
6181 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 6182 | { |
5446cbdf AM |
6183 | /* Get a copy of the native relocations. */ |
6184 | if (isec->reloc_count != 0) | |
25dbc73a | 6185 | { |
5446cbdf AM |
6186 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6187 | link_info->keep_memory); | |
6188 | if (internal_relocs == NULL) | |
6189 | goto error_return; | |
25dbc73a | 6190 | } |
7619e7c7 | 6191 | |
5446cbdf AM |
6192 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6193 | ||
6194 | irelend = internal_relocs + isec->reloc_count; | |
6195 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6196 | { |
5446cbdf AM |
6197 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6198 | bfd_vma toff, roff; | |
6199 | asection *tsec; | |
d3e454b9 | 6200 | struct one_branch_fixup *f; |
5446cbdf | 6201 | size_t insn_offset = 0; |
d3e454b9 | 6202 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
6203 | bfd_byte *hit_addr; |
6204 | unsigned long t0; | |
6205 | struct elf_link_hash_entry *h; | |
49c09209 | 6206 | Elf_Internal_Sym *isym; |
5446cbdf AM |
6207 | struct plt_entry **plist; |
6208 | unsigned char sym_type; | |
6209 | ||
6210 | switch (r_type) | |
6211 | { | |
6212 | case R_PPC_REL24: | |
6213 | case R_PPC_LOCAL24PC: | |
6214 | case R_PPC_PLTREL24: | |
23cedd1d | 6215 | case R_PPC_PLTCALL: |
5446cbdf AM |
6216 | max_branch_offset = 1 << 25; |
6217 | break; | |
6218 | ||
6219 | case R_PPC_REL14: | |
6220 | case R_PPC_REL14_BRTAKEN: | |
6221 | case R_PPC_REL14_BRNTAKEN: | |
6222 | max_branch_offset = 1 << 15; | |
6223 | break; | |
7fce784e | 6224 | |
d3e454b9 AM |
6225 | case R_PPC_ADDR16_HA: |
6226 | if (htab->params->pic_fixup > 0) | |
6227 | break; | |
6228 | continue; | |
6229 | ||
5446cbdf AM |
6230 | default: |
6231 | continue; | |
6232 | } | |
6233 | ||
6234 | /* Get the value of the symbol referred to by the reloc. */ | |
49c09209 AM |
6235 | if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf, |
6236 | ELF32_R_SYM (irel->r_info), abfd)) | |
6237 | goto error_return; | |
5446cbdf | 6238 | |
49c09209 AM |
6239 | if (isym != NULL) |
6240 | { | |
6241 | if (tsec != NULL) | |
6242 | ; | |
5446cbdf AM |
6243 | else if (isym->st_shndx == SHN_ABS) |
6244 | tsec = bfd_abs_section_ptr; | |
49199304 AM |
6245 | else |
6246 | continue; | |
5446cbdf AM |
6247 | |
6248 | toff = isym->st_value; | |
6249 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6250 | } |
25dbc73a | 6251 | else |
5446cbdf | 6252 | { |
49c09209 AM |
6253 | if (tsec != NULL) |
6254 | toff = h->root.u.def.value; | |
5446cbdf AM |
6255 | else if (h->root.type == bfd_link_hash_undefined |
6256 | || h->root.type == bfd_link_hash_undefweak) | |
6257 | { | |
49c09209 AM |
6258 | unsigned long indx; |
6259 | ||
6260 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
5446cbdf | 6261 | tsec = bfd_und_section_ptr; |
0e1862bb | 6262 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
6263 | } |
6264 | else | |
6265 | continue; | |
6266 | ||
9f7552cf AM |
6267 | /* If this branch is to __tls_get_addr then we may later |
6268 | optimise away the call. We won't be needing a long- | |
6269 | branch stub in that case. */ | |
0e1862bb | 6270 | if (bfd_link_executable (link_info) |
9f7552cf AM |
6271 | && h == htab->tls_get_addr |
6272 | && irel != internal_relocs) | |
6273 | { | |
6274 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6275 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6276 | unsigned int tls_mask = 0; | |
6277 | ||
6278 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6279 | R_PPC_TLSLD, or for older object files, a reloc | |
6280 | on the __tls_get_addr arg setup insn. Get tls | |
6281 | mask bits from the symbol on that reloc. */ | |
6282 | if (t_symndx < symtab_hdr->sh_info) | |
6283 | { | |
6284 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6285 | ||
6286 | if (local_got_offsets != NULL) | |
6287 | { | |
6288 | struct plt_entry **local_plt = (struct plt_entry **) | |
6289 | (local_got_offsets + symtab_hdr->sh_info); | |
6290 | char *lgot_masks = (char *) | |
6291 | (local_plt + symtab_hdr->sh_info); | |
6292 | tls_mask = lgot_masks[t_symndx]; | |
6293 | } | |
6294 | } | |
6295 | else | |
6296 | { | |
6297 | struct elf_link_hash_entry *th | |
6298 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
6299 | ||
6300 | while (th->root.type == bfd_link_hash_indirect | |
6301 | || th->root.type == bfd_link_hash_warning) | |
6302 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
6303 | ||
6304 | tls_mask | |
6305 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
6306 | } | |
6307 | ||
6308 | /* The mask bits tell us if the call will be | |
6309 | optimised away. */ | |
6310 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
6311 | && (t_rtype == R_PPC_TLSGD | |
6312 | || t_rtype == R_PPC_GOT_TLSGD16 | |
6313 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
6314 | continue; | |
6315 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
6316 | && (t_rtype == R_PPC_TLSLD | |
6317 | || t_rtype == R_PPC_GOT_TLSLD16 | |
6318 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
6319 | continue; | |
6320 | } | |
6321 | ||
5446cbdf AM |
6322 | sym_type = h->type; |
6323 | } | |
7619e7c7 | 6324 | |
d3e454b9 AM |
6325 | if (r_type == R_PPC_ADDR16_HA) |
6326 | { | |
6327 | if (h != NULL | |
6328 | && !h->def_regular | |
6329 | && h->protected_def | |
6330 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
6331 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
6332 | picfixup_size += 12; | |
6333 | continue; | |
6334 | } | |
6335 | ||
5446cbdf AM |
6336 | /* The condition here under which we call find_plt_ent must |
6337 | match that in relocate_section. If we call find_plt_ent here | |
6338 | but not in relocate_section, or vice versa, then the branch | |
6339 | destination used here may be incorrect. */ | |
6340 | plist = NULL; | |
6341 | if (h != NULL) | |
25dbc73a | 6342 | { |
5446cbdf AM |
6343 | /* We know is_branch_reloc (r_type) is true. */ |
6344 | if (h->type == STT_GNU_IFUNC | |
6345 | || r_type == R_PPC_PLTREL24) | |
6346 | plist = &h->plt.plist; | |
25dbc73a | 6347 | } |
5446cbdf AM |
6348 | else if (sym_type == STT_GNU_IFUNC |
6349 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 6350 | { |
5446cbdf AM |
6351 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
6352 | struct plt_entry **local_plt = (struct plt_entry **) | |
6353 | (local_got_offsets + symtab_hdr->sh_info); | |
6354 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 6355 | } |
5446cbdf | 6356 | if (plist != NULL) |
a9585d22 | 6357 | { |
5446cbdf AM |
6358 | bfd_vma addend = 0; |
6359 | struct plt_entry *ent; | |
6360 | ||
0e1862bb | 6361 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
6362 | addend = irel->r_addend; |
6363 | ent = find_plt_ent (plist, got2, addend); | |
6364 | if (ent != NULL) | |
a9585d22 | 6365 | { |
5446cbdf AM |
6366 | if (htab->plt_type == PLT_NEW |
6367 | || h == NULL | |
6368 | || !htab->elf.dynamic_sections_created | |
6369 | || h->dynindx == -1) | |
6370 | { | |
6371 | tsec = htab->glink; | |
6372 | toff = ent->glink_offset; | |
6373 | } | |
6374 | else | |
6375 | { | |
ce558b89 | 6376 | tsec = htab->elf.splt; |
5446cbdf AM |
6377 | toff = ent->plt.offset; |
6378 | } | |
de972ffa AM |
6379 | } |
6380 | } | |
de972ffa | 6381 | |
5446cbdf AM |
6382 | /* If the branch and target are in the same section, you have |
6383 | no hope of adding stubs. We'll error out later should the | |
6384 | branch overflow. */ | |
6385 | if (tsec == isec) | |
6386 | continue; | |
25dbc73a | 6387 | |
49199304 AM |
6388 | /* toff is used for the symbol index when the symbol is |
6389 | undefined and we're doing a relocatable link, so we can't | |
6390 | support addends. It would be possible to do so by | |
6391 | putting the addend in one_branch_fixup but addends on | |
6392 | branches are rare so it hardly seems worth supporting. */ | |
6393 | if (bfd_link_relocatable (link_info) | |
6394 | && tsec == bfd_und_section_ptr | |
6395 | && r_type != R_PPC_PLTREL24 | |
6396 | && irel->r_addend != 0) | |
6397 | continue; | |
6398 | ||
5446cbdf AM |
6399 | /* There probably isn't any reason to handle symbols in |
6400 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
6401 | attribute for a code section, and we are only looking at | |
6402 | branches. However, implement it correctly here as a | |
6403 | reference for other target relax_section functions. */ | |
6404 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
6405 | { | |
6406 | /* At this stage in linking, no SEC_MERGE symbol has been | |
6407 | adjusted, so all references to such symbols need to be | |
6408 | passed through _bfd_merged_section_offset. (Later, in | |
6409 | relocate_section, all SEC_MERGE symbols *except* for | |
6410 | section symbols have been adjusted.) | |
6411 | ||
6412 | gas may reduce relocations against symbols in SEC_MERGE | |
6413 | sections to a relocation against the section symbol when | |
6414 | the original addend was zero. When the reloc is against | |
6415 | a section symbol we should include the addend in the | |
6416 | offset passed to _bfd_merged_section_offset, since the | |
6417 | location of interest is the original symbol. On the | |
6418 | other hand, an access to "sym+addend" where "sym" is not | |
6419 | a section symbol should not include the addend; Such an | |
6420 | access is presumed to be an offset from "sym"; The | |
6421 | location of interest is just "sym". */ | |
49199304 AM |
6422 | if (sym_type == STT_SECTION |
6423 | && r_type != R_PPC_PLTREL24) | |
5446cbdf AM |
6424 | toff += irel->r_addend; |
6425 | ||
6426 | toff | |
6427 | = _bfd_merged_section_offset (abfd, &tsec, | |
6428 | elf_section_data (tsec)->sec_info, | |
6429 | toff); | |
6430 | ||
49199304 AM |
6431 | if (sym_type != STT_SECTION |
6432 | && r_type != R_PPC_PLTREL24) | |
5446cbdf AM |
6433 | toff += irel->r_addend; |
6434 | } | |
6435 | /* PLTREL24 addends are special. */ | |
6436 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 6437 | toff += irel->r_addend; |
7619e7c7 | 6438 | |
5446cbdf | 6439 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 6440 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
6441 | && tsec == bfd_und_section_ptr) |
6442 | || tsec->output_section == NULL | |
6443 | || (tsec->owner != NULL | |
6444 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
6445 | continue; | |
7619e7c7 | 6446 | |
5446cbdf | 6447 | roff = irel->r_offset; |
7de713b9 | 6448 | |
49199304 AM |
6449 | /* Avoid creating a lot of unnecessary fixups when |
6450 | relocatable if the output section size is such that a | |
6451 | fixup can be created at final link. | |
6452 | The max_branch_offset adjustment allows for some number | |
6453 | of other fixups being needed at final link. */ | |
6454 | if (bfd_link_relocatable (link_info) | |
6455 | && (isec->output_section->rawsize - (isec->output_offset + roff) | |
6456 | < max_branch_offset - (max_branch_offset >> 4))) | |
6457 | continue; | |
6458 | ||
5446cbdf AM |
6459 | /* If the branch is in range, no need to do anything. */ |
6460 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 6461 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
6462 | /* A relocatable link may have sections moved during |
6463 | final link, so do not presume they remain in range. */ | |
6464 | || tsec->output_section == isec->output_section)) | |
6465 | { | |
6466 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 6467 | |
5446cbdf AM |
6468 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
6469 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
6470 | if (symaddr - reladdr + max_branch_offset | |
6471 | < 2 * max_branch_offset) | |
6472 | continue; | |
6473 | } | |
01017ef8 | 6474 | |
5446cbdf | 6475 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 6476 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
6477 | if (f->tsec == tsec && f->toff == toff) |
6478 | break; | |
252b5132 | 6479 | |
5446cbdf AM |
6480 | if (f == NULL) |
6481 | { | |
6482 | size_t size; | |
6483 | unsigned long stub_rtype; | |
25dbc73a | 6484 | |
5446cbdf AM |
6485 | val = trampoff - roff; |
6486 | if (val >= max_branch_offset) | |
6487 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
6488 | one. We'll report an error later. */ | |
6489 | continue; | |
252b5132 | 6490 | |
0e1862bb | 6491 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
6492 | { |
6493 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
6494 | insn_offset = 12; | |
6495 | } | |
6496 | else | |
6497 | { | |
6498 | size = 4 * ARRAY_SIZE (stub_entry); | |
6499 | insn_offset = 0; | |
6500 | } | |
6501 | stub_rtype = R_PPC_RELAX; | |
ce558b89 | 6502 | if (tsec == htab->elf.splt |
5446cbdf AM |
6503 | || tsec == htab->glink) |
6504 | { | |
6505 | stub_rtype = R_PPC_RELAX_PLT; | |
6506 | if (r_type == R_PPC_PLTREL24) | |
6507 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
6508 | } | |
252b5132 | 6509 | |
5446cbdf AM |
6510 | /* Hijack the old relocation. Since we need two |
6511 | relocations for this use a "composite" reloc. */ | |
6512 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
6513 | stub_rtype); | |
6514 | irel->r_offset = trampoff + insn_offset; | |
6515 | if (r_type == R_PPC_PLTREL24 | |
6516 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
6517 | irel->r_addend = 0; | |
6518 | ||
6519 | /* Record the fixup so we don't do it again this section. */ | |
6520 | f = bfd_malloc (sizeof (*f)); | |
d3e454b9 | 6521 | f->next = branch_fixups; |
5446cbdf AM |
6522 | f->tsec = tsec; |
6523 | f->toff = toff; | |
6524 | f->trampoff = trampoff; | |
d3e454b9 | 6525 | branch_fixups = f; |
5446cbdf AM |
6526 | |
6527 | trampoff += size; | |
6528 | changes++; | |
25dbc73a AM |
6529 | } |
6530 | else | |
6531 | { | |
5446cbdf AM |
6532 | val = f->trampoff - roff; |
6533 | if (val >= max_branch_offset) | |
6534 | continue; | |
252b5132 | 6535 | |
5446cbdf AM |
6536 | /* Nop out the reloc, since we're finalizing things here. */ |
6537 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
6538 | } | |
252b5132 | 6539 | |
5446cbdf AM |
6540 | /* Get the section contents. */ |
6541 | if (contents == NULL) | |
25dbc73a | 6542 | { |
5446cbdf AM |
6543 | /* Get cached copy if it exists. */ |
6544 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
6545 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 6546 | /* Go get them off disk. */ |
5446cbdf | 6547 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
6548 | goto error_return; |
6549 | } | |
252b5132 | 6550 | |
5446cbdf AM |
6551 | /* Fix up the existing branch to hit the trampoline. */ |
6552 | hit_addr = contents + roff; | |
6553 | switch (r_type) | |
6554 | { | |
6555 | case R_PPC_REL24: | |
6556 | case R_PPC_LOCAL24PC: | |
6557 | case R_PPC_PLTREL24: | |
6558 | t0 = bfd_get_32 (abfd, hit_addr); | |
6559 | t0 &= ~0x3fffffc; | |
6560 | t0 |= val & 0x3fffffc; | |
6561 | bfd_put_32 (abfd, t0, hit_addr); | |
6562 | break; | |
252b5132 | 6563 | |
5446cbdf AM |
6564 | case R_PPC_REL14: |
6565 | case R_PPC_REL14_BRTAKEN: | |
6566 | case R_PPC_REL14_BRNTAKEN: | |
6567 | t0 = bfd_get_32 (abfd, hit_addr); | |
6568 | t0 &= ~0xfffc; | |
6569 | t0 |= val & 0xfffc; | |
6570 | bfd_put_32 (abfd, t0, hit_addr); | |
6571 | break; | |
6572 | } | |
25dbc73a | 6573 | } |
252b5132 | 6574 | |
d3e454b9 | 6575 | while (branch_fixups != NULL) |
25dbc73a | 6576 | { |
d3e454b9 AM |
6577 | struct one_branch_fixup *f = branch_fixups; |
6578 | branch_fixups = branch_fixups->next; | |
25dbc73a AM |
6579 | free (f); |
6580 | } | |
5446cbdf | 6581 | } |
252b5132 | 6582 | |
5446cbdf AM |
6583 | workaround_change = FALSE; |
6584 | newsize = trampoff; | |
795bc6b3 | 6585 | if (htab->params->ppc476_workaround |
0e1862bb | 6586 | && (!bfd_link_relocatable (link_info) |
795bc6b3 | 6587 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) |
5446cbdf AM |
6588 | { |
6589 | bfd_vma addr, end_addr; | |
6590 | unsigned int crossings; | |
795bc6b3 | 6591 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
6592 | |
6593 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 6594 | end_addr = addr + trampoff; |
5446cbdf | 6595 | addr &= -pagesize; |
795bc6b3 | 6596 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
6597 | if (crossings != 0) |
6598 | { | |
6599 | /* Keep space aligned, to ensure the patch code itself does | |
6600 | not cross a page. Don't decrease size calculated on a | |
6601 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 6602 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
6603 | newsize += crossings * 16; |
6604 | if (relax_info->workaround_size < newsize) | |
6605 | { | |
6606 | relax_info->workaround_size = newsize; | |
6607 | workaround_change = TRUE; | |
5446cbdf AM |
6608 | } |
6609 | /* Ensure relocate_section is called. */ | |
6610 | isec->flags |= SEC_RELOC; | |
6611 | } | |
6612 | newsize = trampoff + relax_info->workaround_size; | |
6613 | } | |
6614 | ||
d3e454b9 AM |
6615 | if (htab->params->pic_fixup > 0) |
6616 | { | |
6617 | picfixup_size -= relax_info->picfixup_size; | |
6618 | if (picfixup_size != 0) | |
6619 | relax_info->picfixup_size += picfixup_size; | |
6620 | newsize += relax_info->picfixup_size; | |
6621 | } | |
6622 | ||
6623 | if (changes != 0 || picfixup_size != 0 || workaround_change) | |
5446cbdf AM |
6624 | isec->size = newsize; |
6625 | ||
25dbc73a AM |
6626 | if (isymbuf != NULL |
6627 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 6628 | { |
25dbc73a AM |
6629 | if (! link_info->keep_memory) |
6630 | free (isymbuf); | |
252b5132 | 6631 | else |
25dbc73a AM |
6632 | { |
6633 | /* Cache the symbols for elf_link_input_bfd. */ | |
6634 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
6635 | } | |
252b5132 RH |
6636 | } |
6637 | ||
25dbc73a AM |
6638 | if (contents != NULL |
6639 | && elf_section_data (isec)->this_hdr.contents != contents) | |
6640 | { | |
53291d1f | 6641 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
6642 | free (contents); |
6643 | else | |
6644 | { | |
6645 | /* Cache the section contents for elf_link_input_bfd. */ | |
6646 | elf_section_data (isec)->this_hdr.contents = contents; | |
6647 | } | |
6648 | } | |
252b5132 | 6649 | |
d3e454b9 | 6650 | changes += picfixup_size; |
9bc4e62b | 6651 | if (changes != 0) |
25dbc73a | 6652 | { |
9bc4e62b NS |
6653 | /* Append sufficient NOP relocs so we can write out relocation |
6654 | information for the trampolines. */ | |
d4730f92 | 6655 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
6656 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
6657 | * sizeof (*new_relocs)); | |
6658 | unsigned ix; | |
5b914448 | 6659 | |
9bc4e62b NS |
6660 | if (!new_relocs) |
6661 | goto error_return; | |
6662 | memcpy (new_relocs, internal_relocs, | |
6663 | isec->reloc_count * sizeof (*new_relocs)); | |
6664 | for (ix = changes; ix--;) | |
6665 | { | |
6666 | irel = new_relocs + ix + isec->reloc_count; | |
6667 | ||
6668 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
6669 | } | |
6670 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 6671 | free (internal_relocs); |
9bc4e62b NS |
6672 | elf_section_data (isec)->relocs = new_relocs; |
6673 | isec->reloc_count += changes; | |
d4730f92 BS |
6674 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
6675 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 6676 | } |
5446cbdf AM |
6677 | else if (internal_relocs != NULL |
6678 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 6679 | free (internal_relocs); |
252b5132 | 6680 | |
5446cbdf | 6681 | *again = changes != 0 || workaround_change; |
b34976b6 | 6682 | return TRUE; |
25dbc73a AM |
6683 | |
6684 | error_return: | |
d3e454b9 | 6685 | while (branch_fixups != NULL) |
5446cbdf | 6686 | { |
d3e454b9 AM |
6687 | struct one_branch_fixup *f = branch_fixups; |
6688 | branch_fixups = branch_fixups->next; | |
5446cbdf AM |
6689 | free (f); |
6690 | } | |
25dbc73a AM |
6691 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
6692 | free (isymbuf); | |
6693 | if (contents != NULL | |
6694 | && elf_section_data (isec)->this_hdr.contents != contents) | |
6695 | free (contents); | |
6696 | if (internal_relocs != NULL | |
6697 | && elf_section_data (isec)->relocs != internal_relocs) | |
6698 | free (internal_relocs); | |
6699 | return FALSE; | |
252b5132 | 6700 | } |
252b5132 | 6701 | \f |
8a696751 AM |
6702 | /* What to do when ld finds relocations against symbols defined in |
6703 | discarded sections. */ | |
6704 | ||
6705 | static unsigned int | |
6706 | ppc_elf_action_discarded (asection *sec) | |
6707 | { | |
6708 | if (strcmp (".fixup", sec->name) == 0) | |
6709 | return 0; | |
6710 | ||
6711 | if (strcmp (".got2", sec->name) == 0) | |
6712 | return 0; | |
6713 | ||
6714 | return _bfd_elf_default_action_discarded (sec); | |
6715 | } | |
c9a2f333 | 6716 | \f |
25dbc73a | 6717 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 6718 | |
25dbc73a | 6719 | static bfd_vma |
76750a2f | 6720 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
6721 | elf_linker_section_t *lsect, |
6722 | struct elf_link_hash_entry *h, | |
6723 | bfd_vma relocation, | |
2bb04cf2 | 6724 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
6725 | { |
6726 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 6727 | |
25dbc73a | 6728 | BFD_ASSERT (lsect != NULL); |
252b5132 | 6729 | |
25dbc73a | 6730 | if (h != NULL) |
252b5132 | 6731 | { |
25dbc73a AM |
6732 | /* Handle global symbol. */ |
6733 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 6734 | |
25dbc73a | 6735 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
6736 | BFD_ASSERT (eh->elf.def_regular); |
6737 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
6738 | } |
6739 | else | |
6740 | { | |
6741 | /* Handle local symbol. */ | |
6742 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 6743 | |
0c8d6e5c | 6744 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 6745 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
6746 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
6747 | } | |
252b5132 | 6748 | |
76750a2f AM |
6749 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
6750 | rel->r_addend, | |
6751 | lsect); | |
6752 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 6753 | |
76750a2f AM |
6754 | /* Offset will always be a multiple of four, so use the bottom bit |
6755 | as a "written" flag. */ | |
6756 | if ((linker_section_ptr->offset & 1) == 0) | |
6757 | { | |
6758 | bfd_put_32 (lsect->section->owner, | |
6759 | relocation + linker_section_ptr->addend, | |
6760 | lsect->section->contents + linker_section_ptr->offset); | |
6761 | linker_section_ptr->offset += 1; | |
252b5132 RH |
6762 | } |
6763 | ||
bd6c6e2b AM |
6764 | relocation = (lsect->section->output_section->vma |
6765 | + lsect->section->output_offset | |
76750a2f | 6766 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 6767 | - SYM_VAL (lsect->sym)); |
252b5132 | 6768 | |
25dbc73a AM |
6769 | #ifdef DEBUG |
6770 | fprintf (stderr, | |
6771 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
6772 | lsect->name, (long) relocation, (long) relocation); | |
6773 | #endif | |
252b5132 | 6774 | |
bd6c6e2b | 6775 | return relocation; |
252b5132 | 6776 | } |
25dbc73a | 6777 | |
e054468f AM |
6778 | #define PPC_LO(v) ((v) & 0xffff) |
6779 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6780 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6781 | ||
6782 | static void | |
9e390558 AM |
6783 | write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, |
6784 | asection *plt_sec, unsigned char *p, | |
e054468f AM |
6785 | struct bfd_link_info *info) |
6786 | { | |
6787 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6788 | bfd *output_bfd = info->output_bfd; | |
6789 | bfd_vma plt; | |
9e390558 AM |
6790 | unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h); |
6791 | ||
6792 | if (h != NULL | |
6793 | && h == htab->tls_get_addr | |
6794 | && !htab->params->no_tls_get_addr_opt) | |
6795 | { | |
6796 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
6797 | p += 4; | |
6798 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
6799 | p += 4; | |
6800 | bfd_put_32 (output_bfd, MR_0_3, p); | |
6801 | p += 4; | |
6802 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
6803 | p += 4; | |
6804 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
6805 | p += 4; | |
6806 | bfd_put_32 (output_bfd, BEQLR, p); | |
6807 | p += 4; | |
6808 | bfd_put_32 (output_bfd, MR_3_0, p); | |
6809 | p += 4; | |
6810 | bfd_put_32 (output_bfd, NOP, p); | |
6811 | p += 4; | |
6812 | } | |
e054468f AM |
6813 | |
6814 | plt = ((ent->plt.offset & ~1) | |
6815 | + plt_sec->output_section->vma | |
6816 | + plt_sec->output_offset); | |
e054468f | 6817 | |
0e1862bb | 6818 | if (bfd_link_pic (info)) |
e054468f AM |
6819 | { |
6820 | bfd_vma got = 0; | |
6821 | ||
6822 | if (ent->addend >= 32768) | |
6823 | got = (ent->addend | |
6824 | + ent->sec->output_section->vma | |
6825 | + ent->sec->output_offset); | |
6826 | else if (htab->elf.hgot != NULL) | |
6827 | got = SYM_VAL (htab->elf.hgot); | |
6828 | ||
6829 | plt -= got; | |
6830 | ||
6831 | if (plt + 0x8000 < 0x10000) | |
9e390558 | 6832 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); |
e054468f AM |
6833 | else |
6834 | { | |
6835 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
6836 | p += 4; | |
6837 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
e054468f AM |
6838 | } |
6839 | } | |
6840 | else | |
6841 | { | |
6842 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
6843 | p += 4; | |
6844 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
9e390558 AM |
6845 | } |
6846 | p += 4; | |
6847 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6848 | p += 4; | |
407aa07c AM |
6849 | bfd_put_32 (output_bfd, BCTR, p); |
6850 | p += 4; | |
9e390558 AM |
6851 | while (p < end) |
6852 | { | |
6853 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); | |
e054468f AM |
6854 | p += 4; |
6855 | } | |
6856 | } | |
6857 | ||
bd6c6e2b AM |
6858 | /* Return true if symbol is defined statically. */ |
6859 | ||
6860 | static bfd_boolean | |
6861 | is_static_defined (struct elf_link_hash_entry *h) | |
6862 | { | |
6863 | return ((h->root.type == bfd_link_hash_defined | |
6864 | || h->root.type == bfd_link_hash_defweak) | |
6865 | && h->root.u.def.section != NULL | |
6866 | && h->root.u.def.section->output_section != NULL); | |
6867 | } | |
6868 | ||
2d0f3896 AM |
6869 | /* If INSN is an opcode that may be used with an @tls operand, return |
6870 | the transformed insn for TLS optimisation, otherwise return 0. If | |
6871 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
6872 | ||
6873 | unsigned int | |
6874 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
6875 | { | |
6876 | unsigned int rtra; | |
6877 | ||
6878 | if ((insn & (0x3f << 26)) != 31 << 26) | |
6879 | return 0; | |
6880 | ||
6881 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
6882 | rtra = insn & ((1 << 26) - (1 << 16)); | |
6883 | else if (((insn >> 16) & 0x1f) == reg) | |
6884 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
6885 | else | |
6886 | return 0; | |
6887 | ||
6888 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
6889 | /* add -> addi. */ | |
6890 | insn = 14 << 26; | |
6891 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
6892 | && ((insn & (0x1f << 6)) < 14 << 6 | |
6893 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
6894 | && (insn & (0x1f << 6)) < 24 << 6))) | |
6895 | /* load and store indexed -> dform. */ | |
6896 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
6897 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
6898 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
6899 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
6900 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
6901 | /* lwax -> lwa. */ | |
6902 | insn = (58 << 26) | 2; | |
6903 | else | |
6904 | return 0; | |
6905 | insn |= rtra; | |
6906 | return insn; | |
6907 | } | |
6908 | ||
766bc656 AM |
6909 | /* If INSN is an opcode that may be used with an @tprel operand, return |
6910 | the transformed insn for an undefined weak symbol, ie. with the | |
6911 | thread pointer REG operand removed. Otherwise return 0. */ | |
6912 | ||
6913 | unsigned int | |
6914 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
6915 | { | |
6916 | if ((insn & (0x1f << 16)) == reg << 16 | |
6917 | && ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
6918 | || (insn & (0x3f << 26)) == 15u << 26 /* addis */ | |
6919 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
6920 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
6921 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
6922 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
6923 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
6924 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
6925 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
6926 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
6927 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
6928 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
6929 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
6930 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
6931 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
6932 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
6933 | && (insn & 3) != 1) | |
6934 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
6935 | && ((insn & 3) == 0 || (insn & 3) == 3)))) | |
6936 | { | |
6937 | insn &= ~(0x1f << 16); | |
6938 | } | |
6939 | else if ((insn & (0x1f << 21)) == reg << 21 | |
6940 | && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */ | |
6941 | || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */ | |
6942 | || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */)) | |
6943 | { | |
6944 | insn &= ~(0x1f << 21); | |
6945 | insn |= (insn & (0x1f << 16)) << 5; | |
6946 | if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */) | |
6947 | insn -= 2 >> 26; /* convert to ori,oris */ | |
6948 | } | |
6949 | else | |
6950 | insn = 0; | |
6951 | return insn; | |
6952 | } | |
6953 | ||
1fe532cf AM |
6954 | static bfd_boolean |
6955 | is_insn_ds_form (unsigned int insn) | |
6956 | { | |
6957 | return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
6958 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
6959 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
6960 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */); | |
6961 | } | |
6962 | ||
6963 | static bfd_boolean | |
6964 | is_insn_dq_form (unsigned int insn) | |
6965 | { | |
a680de9a PB |
6966 | return ((insn & (0x3f << 26)) == 56u << 26 /* lq */ |
6967 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
6968 | && (insn & 3) == 1)); | |
1fe532cf AM |
6969 | } |
6970 | ||
252b5132 RH |
6971 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
6972 | to handle the relocations for a section. | |
6973 | ||
6974 | The relocs are always passed as Rela structures; if the section | |
6975 | actually uses Rel structures, the r_addend field will always be | |
6976 | zero. | |
6977 | ||
6978 | This function is responsible for adjust the section contents as | |
6979 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 6980 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
6981 | necessary. |
6982 | ||
6983 | This function does not have to worry about setting the reloc | |
6984 | address or the reloc symbol index. | |
6985 | ||
6986 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
6987 | ||
6988 | LOCAL_SECTIONS is an array giving the section in the input file | |
6989 | corresponding to the st_shndx field of each local symbol. | |
6990 | ||
6991 | The global hash table entry for the global symbols can be found | |
6992 | via elf_sym_hashes (input_bfd). | |
6993 | ||
1049f94e | 6994 | When generating relocatable output, this function must handle |
252b5132 RH |
6995 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
6996 | going to be the section symbol corresponding to the output | |
6997 | section, which means that the addend must be adjusted | |
6998 | accordingly. */ | |
6999 | ||
b34976b6 | 7000 | static bfd_boolean |
55fd94b0 AM |
7001 | ppc_elf_relocate_section (bfd *output_bfd, |
7002 | struct bfd_link_info *info, | |
7003 | bfd *input_bfd, | |
7004 | asection *input_section, | |
7005 | bfd_byte *contents, | |
7006 | Elf_Internal_Rela *relocs, | |
7007 | Elf_Internal_Sym *local_syms, | |
7008 | asection **local_sections) | |
252b5132 | 7009 | { |
7619e7c7 AM |
7010 | Elf_Internal_Shdr *symtab_hdr; |
7011 | struct elf_link_hash_entry **sym_hashes; | |
7012 | struct ppc_elf_link_hash_table *htab; | |
7013 | Elf_Internal_Rela *rel; | |
c316a17c | 7014 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
7015 | Elf_Internal_Rela *relend; |
7016 | Elf_Internal_Rela outrel; | |
f95f8542 | 7017 | asection *got2; |
252b5132 | 7018 | bfd_vma *local_got_offsets; |
b34976b6 | 7019 | bfd_boolean ret = TRUE; |
95f0d0d2 | 7020 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
3348747a | 7021 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
7022 | unsigned int picfixup_size = 0; |
7023 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 7024 | |
252b5132 | 7025 | #ifdef DEBUG |
871b3ab2 | 7026 | _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, " |
d003868e AM |
7027 | "%ld relocations%s", |
7028 | input_bfd, input_section, | |
7029 | (long) input_section->reloc_count, | |
0e1862bb | 7030 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
7031 | #endif |
7032 | ||
7af5d5c4 AM |
7033 | if (!is_ppc_elf (input_bfd)) |
7034 | { | |
7035 | bfd_set_error (bfd_error_wrong_format); | |
7036 | return FALSE; | |
7037 | } | |
7038 | ||
a6aa5195 AM |
7039 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7040 | ||
e47cd125 | 7041 | /* Initialize howto table if not already done. */ |
8da6118f | 7042 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7043 | ppc_elf_howto_init (); |
7044 | ||
7619e7c7 | 7045 | htab = ppc_elf_hash_table (info); |
252b5132 | 7046 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7047 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7048 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7049 | /* We have to handle relocations in vxworks .tls_vars sections |
7050 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 7051 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
7052 | && !strcmp (input_section->output_section->name, |
7053 | ".tls_vars")); | |
d3e454b9 AM |
7054 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
7055 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 7056 | rel = wrel = relocs; |
7619e7c7 | 7057 | relend = relocs + input_section->reloc_count; |
c316a17c | 7058 | for (; rel < relend; wrel++, rel++) |
252b5132 | 7059 | { |
7619e7c7 AM |
7060 | enum elf_ppc_reloc_type r_type; |
7061 | bfd_vma addend; | |
7062 | bfd_reloc_status_type r; | |
7063 | Elf_Internal_Sym *sym; | |
7064 | asection *sec; | |
7065 | struct elf_link_hash_entry *h; | |
7066 | const char *sym_name; | |
252b5132 RH |
7067 | reloc_howto_type *howto; |
7068 | unsigned long r_symndx; | |
7069 | bfd_vma relocation; | |
91d6fa6a | 7070 | bfd_vma branch_bit, from; |
23cedd1d | 7071 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
7619e7c7 AM |
7072 | bfd_boolean warned; |
7073 | unsigned int tls_type, tls_mask, tls_gd; | |
08be3224 | 7074 | struct plt_entry **ifunc, **plt_list; |
86c95733 | 7075 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7076 | |
c316a17c | 7077 | again: |
55fd94b0 AM |
7078 | r_type = ELF32_R_TYPE (rel->r_info); |
7079 | sym = NULL; | |
7080 | sec = NULL; | |
7081 | h = NULL; | |
7619e7c7 AM |
7082 | unresolved_reloc = FALSE; |
7083 | warned = FALSE; | |
252b5132 | 7084 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7085 | |
252b5132 RH |
7086 | if (r_symndx < symtab_hdr->sh_info) |
7087 | { | |
7088 | sym = local_syms + r_symndx; | |
7089 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7090 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7091 | |
8517fae7 | 7092 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7093 | } |
7094 | else | |
7095 | { | |
62d887d4 L |
7096 | bfd_boolean ignored; |
7097 | ||
b2a8e766 AM |
7098 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7099 | r_symndx, symtab_hdr, sym_hashes, | |
7100 | h, sec, relocation, | |
62d887d4 | 7101 | unresolved_reloc, warned, ignored); |
9abc968f | 7102 | |
252b5132 | 7103 | sym_name = h->root.root.string; |
7619e7c7 AM |
7104 | } |
7105 | ||
dbaa2011 | 7106 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7107 | { |
7108 | /* For relocs against symbols from removed linkonce sections, | |
7109 | or sections discarded by a linker script, we just want the | |
7110 | section contents zeroed. Avoid any special processing. */ | |
7111 | howto = NULL; | |
7112 | if (r_type < R_PPC_max) | |
7113 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
7114 | |
7115 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 7116 | contents, rel->r_offset); |
c316a17c AM |
7117 | wrel->r_offset = rel->r_offset; |
7118 | wrel->r_info = 0; | |
7119 | wrel->r_addend = 0; | |
7120 | ||
7121 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 7122 | symbols defined in discarded sections. Not done for |
c316a17c AM |
7123 | non-debug to preserve relocs in .eh_frame which the |
7124 | eh_frame editing code expects to be present. */ | |
7125 | if (bfd_link_relocatable (info) | |
7126 | && (input_section->flags & SEC_DEBUGGING)) | |
7127 | wrel--; | |
7128 | ||
7129 | continue; | |
ab96bf03 AM |
7130 | } |
7131 | ||
0e1862bb | 7132 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
7133 | { |
7134 | if (got2 != NULL | |
7135 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7136 | && rel->r_addend != 0) |
ab96bf03 AM |
7137 | { |
7138 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7139 | addend specifies the GOT pointer offset within .got2. */ | |
7140 | rel->r_addend += got2->output_offset; | |
7141 | } | |
53291d1f AM |
7142 | if (r_type != R_PPC_RELAX_PLT |
7143 | && r_type != R_PPC_RELAX_PLTREL24 | |
7144 | && r_type != R_PPC_RELAX) | |
c316a17c | 7145 | goto copy_reloc; |
ab96bf03 AM |
7146 | } |
7147 | ||
7619e7c7 AM |
7148 | /* TLS optimizations. Replace instruction sequences and relocs |
7149 | based on information we collected in tls_optimize. We edit | |
7150 | RELOCS so that --emit-relocs will output something sensible | |
7151 | for the final instruction stream. */ | |
7152 | tls_mask = 0; | |
7153 | tls_gd = 0; | |
727fc41e AM |
7154 | if (h != NULL) |
7155 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7156 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7157 | { |
e054468f | 7158 | struct plt_entry **local_plt; |
727fc41e | 7159 | char *lgot_masks; |
e054468f AM |
7160 | local_plt |
7161 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7162 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7163 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7164 | } |
7165 | ||
7166 | /* Ensure reloc mapping code below stays sane. */ | |
7167 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7168 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7169 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7170 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7171 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7172 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7173 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7174 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7175 | abort (); | |
7176 | switch (r_type) | |
7177 | { | |
7178 | default: | |
7179 | break; | |
7180 | ||
7181 | case R_PPC_GOT_TPREL16: | |
7182 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7183 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7184 | && (tls_mask & TLS_TPREL) == 0) |
7185 | { | |
7186 | bfd_vma insn; | |
91d6fa6a | 7187 | |
95f0d0d2 | 7188 | insn = bfd_get_32 (input_bfd, |
c316a17c | 7189 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7190 | insn &= 31 << 21; |
7191 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
95f0d0d2 | 7192 | bfd_put_32 (input_bfd, insn, |
c316a17c | 7193 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7194 | r_type = R_PPC_TPREL16_HA; |
7195 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7196 | } | |
7197 | break; | |
7198 | ||
7199 | case R_PPC_TLS: | |
e054468f | 7200 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7201 | && (tls_mask & TLS_TPREL) == 0) |
7202 | { | |
2d0f3896 AM |
7203 | bfd_vma insn; |
7204 | ||
95f0d0d2 | 7205 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7206 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7207 | if (insn == 0) | |
7619e7c7 | 7208 | abort (); |
95f0d0d2 | 7209 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
7619e7c7 AM |
7210 | r_type = R_PPC_TPREL16_LO; |
7211 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7212 | |
7619e7c7 | 7213 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7214 | PPC_TPREL16_LO which is at low-order half-word. */ |
7215 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7216 | } |
7217 | break; | |
7218 | ||
7219 | case R_PPC_GOT_TLSGD16_HI: | |
7220 | case R_PPC_GOT_TLSGD16_HA: | |
b00a0a86 | 7221 | tls_gd = TLS_GDIE; |
e054468f | 7222 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7223 | goto tls_gdld_hi; |
7224 | break; | |
7225 | ||
7226 | case R_PPC_GOT_TLSLD16_HI: | |
7227 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7228 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7229 | { |
7230 | tls_gdld_hi: | |
7231 | if ((tls_mask & tls_gd) != 0) | |
7232 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7233 | + R_PPC_GOT_TPREL16); | |
7234 | else | |
7235 | { | |
4fe5ca5b | 7236 | rel->r_offset -= d_offset; |
95f0d0d2 | 7237 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7238 | r_type = R_PPC_NONE; |
7239 | } | |
7240 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7241 | } | |
7242 | break; | |
7243 | ||
7244 | case R_PPC_GOT_TLSGD16: | |
7245 | case R_PPC_GOT_TLSGD16_LO: | |
b00a0a86 | 7246 | tls_gd = TLS_GDIE; |
e054468f | 7247 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7248 | goto tls_ldgd_opt; |
7619e7c7 AM |
7249 | break; |
7250 | ||
7251 | case R_PPC_GOT_TLSLD16: | |
7252 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7253 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7254 | { |
3a71aa26 | 7255 | unsigned int insn1, insn2; |
b7fcf6f6 | 7256 | bfd_vma offset; |
7619e7c7 | 7257 | |
b7fcf6f6 | 7258 | tls_ldgd_opt: |
727fc41e AM |
7259 | offset = (bfd_vma) -1; |
7260 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7261 | __tls_get_addr calls, we must trust that the call | |
7262 | stays with its arg setup insns, ie. that the next | |
7263 | reloc is the __tls_get_addr call associated with | |
7264 | the current reloc. Edit both insns. */ | |
7265 | if (input_section->has_tls_get_addr_call | |
7266 | && rel + 1 < relend | |
7267 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7268 | htab->tls_get_addr)) | |
7269 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7270 | /* We read the low GOT_TLS insn because we need to keep |
7271 | the destination reg. It may be something other than | |
7272 | the usual r3, and moved to r3 before the call by | |
7273 | intervening code. */ | |
95f0d0d2 | 7274 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 7275 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7276 | if ((tls_mask & tls_gd) != 0) |
7277 | { | |
7278 | /* IE */ | |
b86ac8e3 | 7279 | insn1 &= (0x1f << 21) | (0x1f << 16); |
b7fcf6f6 | 7280 | insn1 |= 32 << 26; /* lwz */ |
727fc41e AM |
7281 | if (offset != (bfd_vma) -1) |
7282 | { | |
f58d5a2d | 7283 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e | 7284 | insn2 = 0x7c631214; /* add 3,3,2 */ |
95f0d0d2 | 7285 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7286 | } |
b7fcf6f6 AM |
7287 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7288 | + R_PPC_GOT_TPREL16); | |
7289 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7290 | } | |
7291 | else | |
7292 | { | |
7293 | /* LE */ | |
b86ac8e3 AM |
7294 | insn1 &= 0x1f << 21; |
7295 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7296 | if (tls_gd == 0) |
7297 | { | |
b7fcf6f6 | 7298 | /* Was an LD reloc. */ |
1d483afe AM |
7299 | for (r_symndx = 0; |
7300 | r_symndx < symtab_hdr->sh_info; | |
7301 | r_symndx++) | |
7302 | if (local_sections[r_symndx] == sec) | |
7303 | break; | |
7304 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7305 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7306 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7307 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7308 | rel->r_addend -= (local_syms[r_symndx].st_value |
7309 | + sec->output_offset | |
7310 | + sec->output_section->vma); | |
7619e7c7 | 7311 | } |
b7fcf6f6 AM |
7312 | r_type = R_PPC_TPREL16_HA; |
7313 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7314 | if (offset != (bfd_vma) -1) |
7315 | { | |
7316 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7317 | rel[1].r_offset = offset + d_offset; | |
7318 | rel[1].r_addend = rel->r_addend; | |
7319 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 7320 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7321 | } |
b7fcf6f6 | 7322 | } |
95f0d0d2 | 7323 | bfd_put_32 (input_bfd, insn1, |
b7fcf6f6 | 7324 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7325 | if (tls_gd == 0) |
7326 | { | |
7327 | /* We changed the symbol on an LD reloc. Start over | |
7328 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 7329 | goto again; |
7619e7c7 | 7330 | } |
252b5132 | 7331 | } |
7619e7c7 | 7332 | break; |
727fc41e AM |
7333 | |
7334 | case R_PPC_TLSGD: | |
675e2809 AM |
7335 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
7336 | && rel + 1 < relend) | |
727fc41e AM |
7337 | { |
7338 | unsigned int insn2; | |
7339 | bfd_vma offset = rel->r_offset; | |
7340 | ||
23cedd1d AM |
7341 | if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) |
7342 | { | |
7343 | bfd_put_32 (input_bfd, NOP, contents + offset); | |
7344 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); | |
7345 | break; | |
7346 | } | |
7347 | ||
b00a0a86 | 7348 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
7349 | { |
7350 | /* IE */ | |
7351 | r_type = R_PPC_NONE; | |
7352 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
7353 | } | |
7354 | else | |
7355 | { | |
7356 | /* LE */ | |
7357 | r_type = R_PPC_TPREL16_LO; | |
7358 | rel->r_offset += d_offset; | |
7359 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7360 | } | |
7361 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
95f0d0d2 | 7362 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
7363 | /* Zap the reloc on the _tls_get_addr call too. */ |
7364 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 7365 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
7366 | } |
7367 | break; | |
7368 | ||
7369 | case R_PPC_TLSLD: | |
675e2809 AM |
7370 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
7371 | && rel + 1 < relend) | |
727fc41e AM |
7372 | { |
7373 | unsigned int insn2; | |
7374 | ||
23cedd1d AM |
7375 | if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) |
7376 | { | |
7377 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); | |
7378 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); | |
7379 | break; | |
7380 | } | |
7381 | ||
727fc41e AM |
7382 | for (r_symndx = 0; |
7383 | r_symndx < symtab_hdr->sh_info; | |
7384 | r_symndx++) | |
7385 | if (local_sections[r_symndx] == sec) | |
7386 | break; | |
7387 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7388 | r_symndx = STN_UNDEF; |
727fc41e | 7389 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7390 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
7391 | rel->r_addend -= (local_syms[r_symndx].st_value |
7392 | + sec->output_offset | |
7393 | + sec->output_section->vma); | |
7394 | ||
7395 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7396 | rel->r_offset += d_offset; | |
7397 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 7398 | bfd_put_32 (input_bfd, insn2, |
727fc41e AM |
7399 | contents + rel->r_offset - d_offset); |
7400 | /* Zap the reloc on the _tls_get_addr call too. */ | |
7401 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 7402 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 7403 | goto again; |
727fc41e AM |
7404 | } |
7405 | break; | |
7619e7c7 AM |
7406 | } |
7407 | ||
7408 | /* Handle other relocations that tweak non-addend part of insn. */ | |
7409 | branch_bit = 0; | |
7410 | switch (r_type) | |
7411 | { | |
7412 | default: | |
7413 | break; | |
7414 | ||
7415 | /* Branch taken prediction relocations. */ | |
7416 | case R_PPC_ADDR14_BRTAKEN: | |
7417 | case R_PPC_REL14_BRTAKEN: | |
7418 | branch_bit = BRANCH_PREDICT_BIT; | |
1a0670f3 | 7419 | /* Fall through. */ |
7619e7c7 | 7420 | |
4cc11e76 | 7421 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
7422 | case R_PPC_ADDR14_BRNTAKEN: |
7423 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a | 7424 | { |
23cedd1d | 7425 | unsigned int insn; |
7619e7c7 | 7426 | |
95f0d0d2 | 7427 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
91d6fa6a NC |
7428 | insn &= ~BRANCH_PREDICT_BIT; |
7429 | insn |= branch_bit; | |
7619e7c7 | 7430 | |
91d6fa6a NC |
7431 | from = (rel->r_offset |
7432 | + input_section->output_offset | |
7433 | + input_section->output_section->vma); | |
7619e7c7 | 7434 | |
91d6fa6a NC |
7435 | /* Invert 'y' bit if not the default. */ |
7436 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
7437 | insn ^= BRANCH_PREDICT_BIT; | |
7438 | ||
95f0d0d2 | 7439 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
91d6fa6a | 7440 | } |
08be3224 AM |
7441 | break; |
7442 | ||
7443 | case R_PPC_PLT16_HA: | |
7444 | { | |
7445 | unsigned int insn; | |
7446 | ||
7447 | insn = bfd_get_32 (input_bfd, | |
7448 | contents + rel->r_offset - d_offset); | |
7449 | if ((insn & (0x3f << 26)) == 15u << 26 | |
7450 | && (insn & (0x1f << 16)) != 0) | |
7451 | { | |
7452 | if (!bfd_link_pic (info)) | |
7453 | { | |
7454 | /* Convert addis to lis. */ | |
7455 | insn &= ~(0x1f << 16); | |
7456 | bfd_put_32 (input_bfd, insn, | |
7457 | contents + rel->r_offset - d_offset); | |
7458 | } | |
7459 | } | |
7460 | else if (bfd_link_pic (info)) | |
7461 | info->callbacks->einfo | |
7462 | (_("%P: %H: error: %s with unexpected instruction %x\n"), | |
7463 | input_bfd, input_section, rel->r_offset, | |
7464 | "R_PPC_PLT16_HA", insn); | |
7465 | } | |
7466 | break; | |
252b5132 RH |
7467 | } |
7468 | ||
d3e454b9 AM |
7469 | if (ELIMINATE_COPY_RELOCS |
7470 | && h != NULL | |
7471 | && !h->def_regular | |
7472 | && h->protected_def | |
7473 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7474 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
7475 | && htab->params->pic_fixup > 0) | |
7476 | { | |
7477 | /* Convert lis;addi or lis;load/store accessing a protected | |
7478 | variable defined in a shared library to PIC. */ | |
7479 | unsigned int insn; | |
7480 | ||
7481 | if (r_type == R_PPC_ADDR16_HA) | |
7482 | { | |
95f0d0d2 | 7483 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
7484 | contents + rel->r_offset - d_offset); |
7485 | if ((insn & (0x3f << 26)) == (15u << 26) | |
7486 | && (insn & (0x1f << 16)) == 0 /* lis */) | |
7487 | { | |
7488 | bfd_byte *p; | |
7489 | bfd_vma off; | |
7490 | bfd_vma got_addr; | |
7491 | ||
7492 | p = (contents + input_section->size | |
7493 | - relax_info->workaround_size | |
7494 | - relax_info->picfixup_size | |
7495 | + picfixup_size); | |
7496 | off = (p - contents) - (rel->r_offset - d_offset); | |
7497 | if (off > 0x1fffffc || (off & 3) != 0) | |
7498 | info->callbacks->einfo | |
174d0a74 | 7499 | (_("%H: fixup branch overflow\n"), |
d3e454b9 AM |
7500 | input_bfd, input_section, rel->r_offset); |
7501 | ||
95f0d0d2 | 7502 | bfd_put_32 (input_bfd, B | off, |
d3e454b9 | 7503 | contents + rel->r_offset - d_offset); |
ce558b89 AM |
7504 | got_addr = (htab->elf.sgot->output_section->vma |
7505 | + htab->elf.sgot->output_offset | |
d3e454b9 | 7506 | + (h->got.offset & ~1)); |
c316a17c AM |
7507 | wrel->r_offset = (p - contents) + d_offset; |
7508 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
7509 | wrel->r_addend = got_addr; | |
d3e454b9 | 7510 | insn &= ~0xffff; |
4aef7643 | 7511 | insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff; |
95f0d0d2 | 7512 | bfd_put_32 (input_bfd, insn, p); |
d3e454b9 AM |
7513 | |
7514 | /* Convert lis to lwz, loading address from GOT. */ | |
7515 | insn &= ~0xffff; | |
7516 | insn ^= (32u ^ 15u) << 26; | |
7517 | insn |= (insn & (0x1f << 21)) >> 5; | |
7518 | insn |= got_addr & 0xffff; | |
95f0d0d2 | 7519 | bfd_put_32 (input_bfd, insn, p + 4); |
d3e454b9 | 7520 | |
95f0d0d2 | 7521 | bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); |
d3e454b9 AM |
7522 | picfixup_size += 12; |
7523 | ||
7524 | /* Use one of the spare relocs, so --emit-relocs | |
7525 | output is reasonable. */ | |
7526 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
7527 | wrel++, rel++; |
7528 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 7529 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 7530 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
7531 | |
7532 | /* Continue on as if we had a got reloc, to output | |
7533 | dynamic reloc. */ | |
7534 | r_type = R_PPC_GOT16_LO; | |
7535 | } | |
7536 | else | |
2c4d9cbe | 7537 | _bfd_error_handler |
695344c0 | 7538 | /* xgettext:c-format */ |
2dcf00ce AM |
7539 | (_("%pB(%pA+%#" PRIx64 "): error: " |
7540 | "%s with unexpected instruction %#x"), | |
7541 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
7542 | "R_PPC_ADDR16_HA", insn); |
7543 | } | |
7544 | else if (r_type == R_PPC_ADDR16_LO) | |
7545 | { | |
95f0d0d2 | 7546 | insn = bfd_get_32 (input_bfd, |
d3e454b9 AM |
7547 | contents + rel->r_offset - d_offset); |
7548 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7549 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7550 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7551 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7552 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7553 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7554 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7555 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7556 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7557 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7558 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7559 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7560 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7561 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7562 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7563 | && (insn & 3) != 1) | |
7564 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7565 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
7566 | { | |
7567 | /* Arrange to apply the reloc addend, if any. */ | |
7568 | relocation = 0; | |
7569 | unresolved_reloc = FALSE; | |
7570 | rel->r_info = ELF32_R_INFO (0, r_type); | |
7571 | } | |
7572 | else | |
2c4d9cbe | 7573 | _bfd_error_handler |
695344c0 | 7574 | /* xgettext:c-format */ |
2dcf00ce AM |
7575 | (_("%pB(%pA+%#" PRIx64 "): error: " |
7576 | "%s with unexpected instruction %#x"), | |
7577 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
7578 | "R_PPC_ADDR16_LO", insn); |
7579 | } | |
7580 | } | |
7581 | ||
e054468f | 7582 | ifunc = NULL; |
25f23106 | 7583 | if (!htab->is_vxworks) |
e054468f | 7584 | { |
de972ffa AM |
7585 | struct plt_entry *ent; |
7586 | ||
e054468f AM |
7587 | if (h != NULL) |
7588 | { | |
7589 | if (h->type == STT_GNU_IFUNC) | |
7590 | ifunc = &h->plt.plist; | |
7591 | } | |
de972ffa AM |
7592 | else if (local_got_offsets != NULL |
7593 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 7594 | { |
de972ffa | 7595 | struct plt_entry **local_plt; |
e054468f | 7596 | |
de972ffa AM |
7597 | local_plt = (struct plt_entry **) (local_got_offsets |
7598 | + symtab_hdr->sh_info); | |
7599 | ifunc = local_plt + r_symndx; | |
e054468f | 7600 | } |
e054468f | 7601 | |
de972ffa AM |
7602 | ent = NULL; |
7603 | if (ifunc != NULL | |
0e1862bb | 7604 | && (!bfd_link_pic (info) |
08be3224 AM |
7605 | || is_branch_reloc (r_type) |
7606 | || r_type == R_PPC_PLT16_LO | |
7607 | || r_type == R_PPC_PLT16_HI | |
7608 | || r_type == R_PPC_PLT16_HA)) | |
de972ffa AM |
7609 | { |
7610 | addend = 0; | |
08be3224 AM |
7611 | if (bfd_link_pic (info) |
7612 | && (r_type == R_PPC_PLTREL24 | |
7613 | || r_type == R_PPC_PLT16_LO | |
7614 | || r_type == R_PPC_PLT16_HI | |
7615 | || r_type == R_PPC_PLT16_HA)) | |
de972ffa AM |
7616 | addend = rel->r_addend; |
7617 | ent = find_plt_ent (ifunc, got2, addend); | |
7618 | } | |
7619 | if (ent != NULL) | |
7620 | { | |
888a7fc3 AM |
7621 | if (bfd_link_pic (info) |
7622 | && ent->sec != got2 | |
7623 | && htab->plt_type != PLT_NEW | |
7624 | && (!htab->elf.dynamic_sections_created | |
7625 | || h == NULL | |
7626 | || h->dynindx == -1)) | |
7627 | { | |
7628 | /* Uh oh, we are going to create a pic glink stub | |
7629 | for an ifunc (here for h == NULL and later in | |
7630 | finish_dynamic_symbol for h != NULL), and | |
7631 | apparently are using code compiled with | |
7632 | -mbss-plt. The difficulty is that -mbss-plt code | |
7633 | gives no indication via a magic PLTREL24 addend | |
7634 | whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or | |
7635 | is pointing into a .got2 section (and how far | |
7636 | into .got2). */ | |
7637 | info->callbacks->einfo | |
695344c0 | 7638 | /* xgettext:c-format */ |
174d0a74 | 7639 | (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"), |
888a7fc3 AM |
7640 | input_bfd, input_section, rel->r_offset, sym_name); |
7641 | } | |
e054468f AM |
7642 | |
7643 | unresolved_reloc = FALSE; | |
7644 | if (htab->plt_type == PLT_NEW | |
7645 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
7646 | || h == NULL |
7647 | || h->dynindx == -1) | |
e054468f AM |
7648 | relocation = (htab->glink->output_section->vma |
7649 | + htab->glink->output_offset | |
7650 | + (ent->glink_offset & ~1)); | |
7651 | else | |
ce558b89 AM |
7652 | relocation = (htab->elf.splt->output_section->vma |
7653 | + htab->elf.splt->output_offset | |
e054468f AM |
7654 | + ent->plt.offset); |
7655 | } | |
7656 | } | |
7657 | ||
7619e7c7 | 7658 | addend = rel->r_addend; |
23cedd1d | 7659 | save_unresolved_reloc = unresolved_reloc; |
7619e7c7 | 7660 | howto = NULL; |
55fd94b0 AM |
7661 | if (r_type < R_PPC_max) |
7662 | howto = ppc_elf_howto_table[r_type]; | |
9a23f96e AM |
7663 | |
7664 | switch (r_type) | |
7665 | { | |
7666 | default: | |
7667 | break; | |
7668 | ||
7669 | case R_PPC_TPREL16_HA: | |
7670 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
7671 | { | |
7672 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
7673 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
7674 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7675 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
7676 | /* xgettext:c-format */ | |
7677 | info->callbacks->minfo | |
7678 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
7679 | input_bfd, input_section, rel->r_offset, howto->name, insn); | |
7680 | else | |
7681 | bfd_put_32 (input_bfd, NOP, p); | |
7682 | } | |
7683 | break; | |
7684 | ||
7685 | case R_PPC_TPREL16_LO: | |
7686 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
7687 | { | |
7688 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
7689 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
7690 | insn &= ~(0x1f << 16); | |
7691 | insn |= 2 << 16; | |
7692 | bfd_put_32 (input_bfd, insn, p); | |
7693 | } | |
7694 | break; | |
7695 | } | |
7696 | ||
7697 | tls_type = 0; | |
7619e7c7 | 7698 | switch (r_type) |
252b5132 RH |
7699 | { |
7700 | default: | |
cf97bcb0 AM |
7701 | /* xgettext:c-format */ |
7702 | _bfd_error_handler (_("%pB: %s unsupported"), | |
7703 | input_bfd, howto->name); | |
252b5132 RH |
7704 | |
7705 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 7706 | ret = FALSE; |
c316a17c | 7707 | goto copy_reloc; |
252b5132 | 7708 | |
7619e7c7 AM |
7709 | case R_PPC_NONE: |
7710 | case R_PPC_TLS: | |
727fc41e AM |
7711 | case R_PPC_TLSGD: |
7712 | case R_PPC_TLSLD: | |
7619e7c7 AM |
7713 | case R_PPC_EMB_MRKREF: |
7714 | case R_PPC_GNU_VTINHERIT: | |
7715 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 7716 | goto copy_reloc; |
7595d193 | 7717 | |
7619e7c7 AM |
7718 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
7719 | address in the GOT as relocation value instead of the | |
7720 | symbol's value itself. Also, create a GOT entry for the | |
7721 | symbol and put the symbol value there. */ | |
7722 | case R_PPC_GOT_TLSGD16: | |
7723 | case R_PPC_GOT_TLSGD16_LO: | |
7724 | case R_PPC_GOT_TLSGD16_HI: | |
7725 | case R_PPC_GOT_TLSGD16_HA: | |
7726 | tls_type = TLS_TLS | TLS_GD; | |
7727 | goto dogot; | |
7728 | ||
7729 | case R_PPC_GOT_TLSLD16: | |
7730 | case R_PPC_GOT_TLSLD16_LO: | |
7731 | case R_PPC_GOT_TLSLD16_HI: | |
7732 | case R_PPC_GOT_TLSLD16_HA: | |
7733 | tls_type = TLS_TLS | TLS_LD; | |
7734 | goto dogot; | |
7735 | ||
7736 | case R_PPC_GOT_TPREL16: | |
7737 | case R_PPC_GOT_TPREL16_LO: | |
7738 | case R_PPC_GOT_TPREL16_HI: | |
7739 | case R_PPC_GOT_TPREL16_HA: | |
7740 | tls_type = TLS_TLS | TLS_TPREL; | |
7741 | goto dogot; | |
7742 | ||
7743 | case R_PPC_GOT_DTPREL16: | |
7744 | case R_PPC_GOT_DTPREL16_LO: | |
7745 | case R_PPC_GOT_DTPREL16_HI: | |
7746 | case R_PPC_GOT_DTPREL16_HA: | |
7747 | tls_type = TLS_TLS | TLS_DTPREL; | |
7748 | goto dogot; | |
7749 | ||
7750 | case R_PPC_GOT16: | |
7751 | case R_PPC_GOT16_LO: | |
7752 | case R_PPC_GOT16_HI: | |
7753 | case R_PPC_GOT16_HA: | |
727fc41e | 7754 | tls_mask = 0; |
7619e7c7 AM |
7755 | dogot: |
7756 | { | |
7757 | /* Relocation is to the entry for this symbol in the global | |
7758 | offset table. */ | |
7759 | bfd_vma off; | |
7760 | bfd_vma *offp; | |
7761 | unsigned long indx; | |
7762 | ||
ce558b89 | 7763 | if (htab->elf.sgot == NULL) |
7619e7c7 AM |
7764 | abort (); |
7765 | ||
7766 | indx = 0; | |
7767 | if (tls_type == (TLS_TLS | TLS_LD) | |
d881513a | 7768 | && (h == NULL |
f5385ebf | 7769 | || !h->def_dynamic)) |
7619e7c7 AM |
7770 | offp = &htab->tlsld_got.offset; |
7771 | else if (h != NULL) | |
7772 | { | |
f0158f44 AM |
7773 | if (!htab->elf.dynamic_sections_created |
7774 | || h->dynindx == -1 | |
7775 | || SYMBOL_REFERENCES_LOCAL (info, h) | |
21d68fcd | 7776 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7619e7c7 AM |
7777 | /* This is actually a static link, or it is a |
7778 | -Bsymbolic link and the symbol is defined | |
7779 | locally, or the symbol was forced to be local | |
7780 | because of a version file. */ | |
7781 | ; | |
7782 | else | |
7783 | { | |
7784 | indx = h->dynindx; | |
7785 | unresolved_reloc = FALSE; | |
7786 | } | |
7787 | offp = &h->got.offset; | |
7788 | } | |
7789 | else | |
7790 | { | |
7791 | if (local_got_offsets == NULL) | |
7792 | abort (); | |
7793 | offp = &local_got_offsets[r_symndx]; | |
7794 | } | |
7795 | ||
7796 | /* The offset must always be a multiple of 4. We use the | |
7797 | least significant bit to record whether we have already | |
7798 | processed this entry. */ | |
7799 | off = *offp; | |
7800 | if ((off & 1) != 0) | |
7801 | off &= ~1; | |
7802 | else | |
7803 | { | |
37da22e5 AM |
7804 | unsigned int tls_m = ((tls_mask & TLS_TLS) != 0 |
7805 | ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL | |
b00a0a86 | 7806 | | TLS_TPREL | TLS_GDIE) |
37da22e5 | 7807 | : 0); |
70bccea4 AM |
7808 | |
7809 | if (offp == &htab->tlsld_got.offset) | |
7810 | tls_m = TLS_LD; | |
7811 | else if (h == NULL | |
f5385ebf | 7812 | || !h->def_dynamic) |
70bccea4 AM |
7813 | tls_m &= ~TLS_LD; |
7814 | ||
7815 | /* We might have multiple got entries for this sym. | |
7816 | Initialize them all. */ | |
7817 | do | |
7619e7c7 | 7818 | { |
70bccea4 AM |
7819 | int tls_ty = 0; |
7820 | ||
7821 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 7822 | { |
70bccea4 AM |
7823 | tls_ty = TLS_TLS | TLS_LD; |
7824 | tls_m &= ~TLS_LD; | |
7825 | } | |
7826 | else if ((tls_m & TLS_GD) != 0) | |
7827 | { | |
7828 | tls_ty = TLS_TLS | TLS_GD; | |
7829 | tls_m &= ~TLS_GD; | |
7830 | } | |
7831 | else if ((tls_m & TLS_DTPREL) != 0) | |
7832 | { | |
7833 | tls_ty = TLS_TLS | TLS_DTPREL; | |
7834 | tls_m &= ~TLS_DTPREL; | |
7835 | } | |
b00a0a86 | 7836 | else if ((tls_m & (TLS_TPREL | TLS_GDIE)) != 0) |
70bccea4 AM |
7837 | { |
7838 | tls_ty = TLS_TLS | TLS_TPREL; | |
7839 | tls_m = 0; | |
7619e7c7 | 7840 | } |
7619e7c7 | 7841 | |
70bccea4 | 7842 | /* Generate relocs for the dynamic linker. */ |
f0158f44 AM |
7843 | if (indx != 0 |
7844 | || (bfd_link_pic (info) | |
7845 | && (h == NULL | |
21d68fcd | 7846 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
f15d0b54 AM |
7847 | || offp == &htab->tlsld_got.offset) |
7848 | && !(tls_ty == (TLS_TLS | TLS_TPREL) | |
7849 | && bfd_link_executable (info) | |
7850 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
7619e7c7 | 7851 | { |
ce558b89 | 7852 | asection *rsec = htab->elf.srelgot; |
91d6fa6a | 7853 | bfd_byte * loc; |
91e21fb7 | 7854 | |
0bed072f | 7855 | if (ifunc != NULL) |
82e66161 AM |
7856 | { |
7857 | rsec = htab->elf.irelplt; | |
7858 | if (indx == 0) | |
7859 | htab->local_ifunc_resolver = 1; | |
7860 | else if (is_static_defined (h)) | |
7861 | htab->maybe_local_ifunc_resolver = 1; | |
7862 | } | |
ce558b89 AM |
7863 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
7864 | + htab->elf.sgot->output_offset | |
70bccea4 | 7865 | + off); |
e515b051 | 7866 | outrel.r_addend = 0; |
70bccea4 AM |
7867 | if (tls_ty & (TLS_LD | TLS_GD)) |
7868 | { | |
7869 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
7870 | if (tls_ty == (TLS_TLS | TLS_GD)) |
7871 | { | |
25f23106 AM |
7872 | loc = rsec->contents; |
7873 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
7874 | * sizeof (Elf32_External_Rela)); |
7875 | bfd_elf32_swap_reloca_out (output_bfd, | |
7876 | &outrel, loc); | |
e515b051 | 7877 | outrel.r_offset += 4; |
70bccea4 AM |
7878 | outrel.r_info |
7879 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
7880 | } |
7881 | } | |
7882 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
7883 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
7884 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
7885 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 7886 | else if (indx != 0) |
70bccea4 | 7887 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
7888 | else if (ifunc != NULL) |
7889 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
7890 | else | |
7891 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 7892 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
7893 | { |
7894 | outrel.r_addend += relocation; | |
7895 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
7896 | { |
7897 | if (htab->elf.tls_sec == NULL) | |
7898 | outrel.r_addend = 0; | |
7899 | else | |
7900 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
7901 | } | |
e515b051 | 7902 | } |
25f23106 AM |
7903 | loc = rsec->contents; |
7904 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
7905 | * sizeof (Elf32_External_Rela)); |
7906 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
7907 | } |
7908 | ||
70bccea4 AM |
7909 | /* Init the .got section contents if we're not |
7910 | emitting a reloc. */ | |
7911 | else | |
7619e7c7 | 7912 | { |
70bccea4 AM |
7913 | bfd_vma value = relocation; |
7914 | ||
f0158f44 | 7915 | if (tls_ty != 0) |
70bccea4 | 7916 | { |
989f9879 AM |
7917 | if (htab->elf.tls_sec == NULL) |
7918 | value = 0; | |
7919 | else | |
7920 | { | |
f0158f44 AM |
7921 | if (tls_ty & TLS_LD) |
7922 | value = 0; | |
7923 | else | |
7924 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 7925 | if (tls_ty & TLS_TPREL) |
989f9879 AM |
7926 | value += DTP_OFFSET - TP_OFFSET; |
7927 | } | |
70bccea4 | 7928 | |
f0158f44 | 7929 | if (tls_ty & (TLS_LD | TLS_GD)) |
7b609f53 | 7930 | { |
95f0d0d2 | 7931 | bfd_put_32 (input_bfd, value, |
ce558b89 | 7932 | htab->elf.sgot->contents + off + 4); |
676ee2b5 | 7933 | value = 1; |
7b609f53 | 7934 | } |
70bccea4 | 7935 | } |
95f0d0d2 | 7936 | bfd_put_32 (input_bfd, value, |
ce558b89 | 7937 | htab->elf.sgot->contents + off); |
7619e7c7 | 7938 | } |
70bccea4 AM |
7939 | |
7940 | off += 4; | |
7941 | if (tls_ty & (TLS_LD | TLS_GD)) | |
7942 | off += 4; | |
7619e7c7 | 7943 | } |
70bccea4 AM |
7944 | while (tls_m != 0); |
7945 | ||
7946 | off = *offp; | |
7947 | *offp = off | 1; | |
7619e7c7 AM |
7948 | } |
7949 | ||
7950 | if (off >= (bfd_vma) -2) | |
7951 | abort (); | |
7952 | ||
70bccea4 AM |
7953 | if ((tls_type & TLS_TLS) != 0) |
7954 | { | |
7955 | if (tls_type != (TLS_TLS | TLS_LD)) | |
7956 | { | |
7957 | if ((tls_mask & TLS_LD) != 0 | |
7958 | && !(h == NULL | |
f5385ebf | 7959 | || !h->def_dynamic)) |
70bccea4 AM |
7960 | off += 8; |
7961 | if (tls_type != (TLS_TLS | TLS_GD)) | |
7962 | { | |
7963 | if ((tls_mask & TLS_GD) != 0) | |
7964 | off += 8; | |
7965 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
7966 | { | |
7967 | if ((tls_mask & TLS_DTPREL) != 0) | |
7968 | off += 4; | |
7969 | } | |
7970 | } | |
7971 | } | |
7972 | } | |
7973 | ||
d3e454b9 AM |
7974 | /* If here for a picfixup, we're done. */ |
7975 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 7976 | goto copy_reloc; |
d3e454b9 | 7977 | |
ce558b89 AM |
7978 | relocation = (htab->elf.sgot->output_section->vma |
7979 | + htab->elf.sgot->output_offset | |
e87d4038 AM |
7980 | + off |
7981 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
7982 | |
7983 | /* Addends on got relocations don't make much sense. | |
7984 | x+off@got is actually x@got+off, and since the got is | |
7985 | generated by a hash table traversal, the value in the | |
7986 | got at entry m+n bears little relation to the entry m. */ | |
7987 | if (addend != 0) | |
25f53a85 | 7988 | info->callbacks->einfo |
695344c0 | 7989 | /* xgettext:c-format */ |
174d0a74 | 7990 | (_("%H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 7991 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 7992 | howto->name, |
7619e7c7 AM |
7993 | sym_name); |
7994 | } | |
86c95733 | 7995 | break; |
7619e7c7 | 7996 | |
86c95733 | 7997 | /* Relocations that need no special processing. */ |
7619e7c7 | 7998 | case R_PPC_LOCAL24PC: |
252b5132 RH |
7999 | /* It makes no sense to point a local relocation |
8000 | at a symbol not in this object. */ | |
7b609f53 | 8001 | if (unresolved_reloc) |
252b5132 | 8002 | { |
1a72702b AM |
8003 | (*info->callbacks->undefined_symbol) (info, |
8004 | h->root.root.string, | |
8005 | input_bfd, | |
8006 | input_section, | |
8007 | rel->r_offset, | |
8008 | TRUE); | |
c316a17c | 8009 | goto copy_reloc; |
252b5132 | 8010 | } |
888a7fc3 AM |
8011 | if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info)) |
8012 | { | |
8013 | /* @local on an ifunc does not really make sense since | |
8014 | the ifunc resolver can take you anywhere. More | |
8015 | seriously, calls to ifuncs must go through a plt call | |
8016 | stub, and for pic the plt call stubs uses r30 to | |
8017 | access the PLT. The problem is that a call that is | |
8018 | local won't have the +32k reloc addend trick marking | |
8019 | -fPIC code, so the linker won't know whether r30 is | |
8020 | _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */ | |
695344c0 | 8021 | /* xgettext:c-format */ |
174d0a74 | 8022 | info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"), |
888a7fc3 AM |
8023 | input_bfd, input_section, rel->r_offset, |
8024 | h->root.root.string); | |
8025 | } | |
252b5132 RH |
8026 | break; |
8027 | ||
7619e7c7 AM |
8028 | case R_PPC_DTPREL16: |
8029 | case R_PPC_DTPREL16_LO: | |
8030 | case R_PPC_DTPREL16_HI: | |
8031 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8032 | if (htab->elf.tls_sec != NULL) |
8033 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8034 | break; |
8035 | ||
70bccea4 AM |
8036 | /* Relocations that may need to be propagated if this is a shared |
8037 | object. */ | |
7619e7c7 AM |
8038 | case R_PPC_TPREL16: |
8039 | case R_PPC_TPREL16_LO: | |
8040 | case R_PPC_TPREL16_HI: | |
8041 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8042 | if (h != NULL |
8043 | && h->root.type == bfd_link_hash_undefweak | |
8044 | && h->dynindx == -1) | |
8045 | { | |
8046 | /* Make this relocation against an undefined weak symbol | |
8047 | resolve to zero. This is really just a tweak, since | |
8048 | code using weak externs ought to check that they are | |
8049 | defined before using them. */ | |
8050 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
95f0d0d2 | 8051 | unsigned int insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
8052 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); |
8053 | if (insn != 0) | |
95f0d0d2 | 8054 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
8055 | break; |
8056 | } | |
989f9879 AM |
8057 | if (htab->elf.tls_sec != NULL) |
8058 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 | 8059 | /* The TPREL16 relocs shouldn't really be used in shared |
7c8bbca5 AM |
8060 | libs or with non-local symbols as that will result in |
8061 | DT_TEXTREL being set, but support them anyway. */ | |
7619e7c7 AM |
8062 | goto dodyn; |
8063 | ||
8064 | case R_PPC_TPREL32: | |
989f9879 AM |
8065 | if (htab->elf.tls_sec != NULL) |
8066 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8067 | goto dodyn; |
8068 | ||
8069 | case R_PPC_DTPREL32: | |
989f9879 AM |
8070 | if (htab->elf.tls_sec != NULL) |
8071 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8072 | goto dodyn; |
8073 | ||
e515b051 AM |
8074 | case R_PPC_DTPMOD32: |
8075 | relocation = 1; | |
8076 | addend = 0; | |
8077 | goto dodyn; | |
8078 | ||
d7128ce4 AM |
8079 | case R_PPC_REL16: |
8080 | case R_PPC_REL16_LO: | |
8081 | case R_PPC_REL16_HI: | |
8082 | case R_PPC_REL16_HA: | |
a680de9a | 8083 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
8084 | break; |
8085 | ||
7619e7c7 | 8086 | case R_PPC_REL32: |
625af618 AM |
8087 | if (h == NULL || h == htab->elf.hgot) |
8088 | break; | |
8089 | /* fall through */ | |
8090 | ||
8091 | case R_PPC_ADDR32: | |
8092 | case R_PPC_ADDR16: | |
8093 | case R_PPC_ADDR16_LO: | |
8094 | case R_PPC_ADDR16_HI: | |
8095 | case R_PPC_ADDR16_HA: | |
8096 | case R_PPC_UADDR32: | |
8097 | case R_PPC_UADDR16: | |
8098 | goto dodyn; | |
8099 | ||
b9c361e0 JL |
8100 | case R_PPC_VLE_REL8: |
8101 | case R_PPC_VLE_REL15: | |
8102 | case R_PPC_VLE_REL24: | |
625af618 | 8103 | case R_PPC_REL24: |
7619e7c7 AM |
8104 | case R_PPC_REL14: |
8105 | case R_PPC_REL14_BRTAKEN: | |
8106 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8107 | /* If these relocations are not to a named symbol, they can be |
8108 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8109 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8110 | || h == htab->elf.hgot) |
252b5132 | 8111 | break; |
70bccea4 | 8112 | /* fall through */ |
252b5132 | 8113 | |
7619e7c7 | 8114 | case R_PPC_ADDR24: |
7619e7c7 AM |
8115 | case R_PPC_ADDR14: |
8116 | case R_PPC_ADDR14_BRTAKEN: | |
8117 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 8118 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
8119 | break; |
8120 | /* fall through */ | |
8121 | ||
7619e7c7 | 8122 | dodyn: |
3348747a NS |
8123 | if ((input_section->flags & SEC_ALLOC) == 0 |
8124 | || is_vxworks_tls) | |
c87b5a93 | 8125 | break; |
c87b5a93 | 8126 | |
287c7eaf AM |
8127 | if (bfd_link_pic (info) |
8128 | ? ((h == NULL | |
8129 | || ppc_elf_hash_entry (h)->dyn_relocs != NULL) | |
8130 | && ((h != NULL && pc_dynrelocs (h)) | |
8131 | || must_be_dyn_reloc (info, r_type))) | |
8132 | : (h != NULL | |
8133 | && ppc_elf_hash_entry (h)->dyn_relocs != NULL)) | |
252b5132 | 8134 | { |
0bb2d96a | 8135 | int skip; |
f95f8542 AM |
8136 | bfd_byte *loc; |
8137 | asection *sreloc; | |
82e66161 AM |
8138 | long indx = 0; |
8139 | ||
252b5132 | 8140 | #ifdef DEBUG |
55fd94b0 AM |
8141 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8142 | "create relocation for %s\n", | |
70bccea4 AM |
8143 | (h && h->root.root.string |
8144 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8145 | #endif |
8146 | ||
8147 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8148 | are copied into the output file to be resolved at run |
8149 | time. */ | |
0bb2d96a | 8150 | skip = 0; |
5b914448 AM |
8151 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8152 | input_section, | |
8153 | rel->r_offset); | |
0bb2d96a JJ |
8154 | if (outrel.r_offset == (bfd_vma) -1 |
8155 | || outrel.r_offset == (bfd_vma) -2) | |
8156 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8157 | outrel.r_offset += (input_section->output_section->vma |
8158 | + input_section->output_offset); | |
8159 | ||
63f6e94f AM |
8160 | /* Optimize unaligned reloc use. */ |
8161 | if ((r_type == R_PPC_ADDR32 && (outrel.r_offset & 3) != 0) | |
8162 | || (r_type == R_PPC_UADDR32 && (outrel.r_offset & 3) == 0)) | |
8163 | r_type ^= R_PPC_ADDR32 ^ R_PPC_UADDR32; | |
8164 | if ((r_type == R_PPC_ADDR16 && (outrel.r_offset & 1) != 0) | |
8165 | || (r_type == R_PPC_UADDR16 && (outrel.r_offset & 1) == 0)) | |
8166 | r_type ^= R_PPC_ADDR16 ^ R_PPC_UADDR16; | |
8167 | ||
252b5132 RH |
8168 | if (skip) |
8169 | memset (&outrel, 0, sizeof outrel); | |
21d68fcd | 8170 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 8171 | { |
82e66161 AM |
8172 | indx = h->dynindx; |
8173 | BFD_ASSERT (indx != -1); | |
7619e7c7 | 8174 | unresolved_reloc = FALSE; |
82e66161 | 8175 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
8176 | outrel.r_addend = rel->r_addend; |
8177 | } | |
8178 | else | |
8179 | { | |
47388f4c AM |
8180 | outrel.r_addend = relocation + rel->r_addend; |
8181 | ||
25f23106 | 8182 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8183 | { |
25f23106 AM |
8184 | if (ifunc != NULL) |
8185 | { | |
8186 | /* If we get here when building a static | |
8187 | executable, then the libc startup function | |
8188 | responsible for applying indirect function | |
8189 | relocations is going to complain about | |
8190 | the reloc type. | |
8191 | If we get here when building a dynamic | |
8192 | executable, it will be because we have | |
8193 | a text relocation. The dynamic loader | |
8194 | will set the text segment writable and | |
8195 | non-executable to apply text relocations. | |
8196 | So we'll segfault when trying to run the | |
8197 | indirection function to resolve the reloc. */ | |
25f53a85 | 8198 | info->callbacks->einfo |
695344c0 | 8199 | /* xgettext:c-format */ |
174d0a74 | 8200 | (_("%H: relocation %s for indirect " |
25f53a85 AM |
8201 | "function %s unsupported\n"), |
8202 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8203 | howto->name, |
8204 | sym_name); | |
8205 | ret = FALSE; | |
8206 | } | |
cf35638d | 8207 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8208 | ; |
252b5132 RH |
8209 | else if (sec == NULL || sec->owner == NULL) |
8210 | { | |
8211 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8212 | ret = FALSE; |
252b5132 RH |
8213 | } |
8214 | else | |
8215 | { | |
8216 | asection *osec; | |
8217 | ||
47388f4c AM |
8218 | /* We are turning this relocation into one |
8219 | against a section symbol. It would be | |
8220 | proper to subtract the symbol's value, | |
8221 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8222 | but ld.so expects buggy relocs. |
8223 | FIXME: Why not always use a zero index? */ | |
252b5132 | 8224 | osec = sec->output_section; |
f26a3287 AM |
8225 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
8226 | { | |
8227 | osec = htab->elf.tls_sec; | |
8228 | indx = 0; | |
8229 | } | |
8230 | else | |
74541ad4 | 8231 | { |
74541ad4 | 8232 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
8233 | if (indx == 0) |
8234 | { | |
8235 | osec = htab->elf.text_index_section; | |
8236 | indx = elf_section_data (osec)->dynindx; | |
8237 | } | |
8238 | BFD_ASSERT (indx != 0); | |
74541ad4 | 8239 | } |
f26a3287 AM |
8240 | |
8241 | /* ld.so doesn't expect buggy TLS relocs. | |
8242 | Don't leave the symbol value in the | |
8243 | addend for them. */ | |
8244 | if (IS_PPC_TLS_RELOC (r_type)) | |
8245 | outrel.r_addend -= osec->vma; | |
252b5132 RH |
8246 | } |
8247 | ||
8248 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8249 | } |
25f23106 AM |
8250 | else if (ifunc != NULL) |
8251 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8252 | else | |
8253 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8254 | } |
8255 | ||
82e66161 AM |
8256 | sreloc = elf_section_data (input_section)->sreloc; |
8257 | if (ifunc) | |
8258 | { | |
8259 | sreloc = htab->elf.irelplt; | |
8260 | if (indx == 0) | |
8261 | htab->local_ifunc_resolver = 1; | |
8262 | else if (is_static_defined (h)) | |
8263 | htab->maybe_local_ifunc_resolver = 1; | |
8264 | } | |
8265 | if (sreloc == NULL) | |
8266 | return FALSE; | |
8267 | ||
947216bf AM |
8268 | loc = sreloc->contents; |
8269 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8270 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8271 | |
2243deae | 8272 | if (skip == -1) |
c316a17c | 8273 | goto copy_reloc; |
2243deae | 8274 | |
f0158f44 AM |
8275 | /* This reloc will be computed at runtime. Clear the memory |
8276 | so that it contains a predictable value for prelink. */ | |
8277 | if (!skip) | |
2243deae L |
8278 | { |
8279 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8280 | addend = 0; | |
8281 | break; | |
8282 | } | |
252b5132 | 8283 | } |
252b5132 RH |
8284 | break; |
8285 | ||
32af9f6e AM |
8286 | case R_PPC_RELAX_PLT: |
8287 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8288 | if (h != NULL) |
8289 | { | |
32af9f6e AM |
8290 | struct plt_entry *ent; |
8291 | bfd_vma got2_addend = 0; | |
8292 | ||
8293 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8294 | { | |
0e1862bb | 8295 | if (bfd_link_pic (info)) |
32af9f6e AM |
8296 | got2_addend = addend; |
8297 | addend = 0; | |
8298 | } | |
8299 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8300 | if (htab->plt_type == PLT_NEW) |
8301 | relocation = (htab->glink->output_section->vma | |
8302 | + htab->glink->output_offset | |
8303 | + ent->glink_offset); | |
8304 | else | |
ce558b89 AM |
8305 | relocation = (htab->elf.splt->output_section->vma |
8306 | + htab->elf.splt->output_offset | |
de972ffa AM |
8307 | + ent->plt.offset); |
8308 | } | |
1a0670f3 | 8309 | /* Fall through. */ |
b4a38de6 | 8310 | |
32af9f6e | 8311 | case R_PPC_RELAX: |
9abc968f | 8312 | { |
53291d1f AM |
8313 | const int *stub; |
8314 | size_t size; | |
8315 | size_t insn_offset = rel->r_offset; | |
8316 | unsigned int insn; | |
9abc968f | 8317 | |
0e1862bb | 8318 | if (bfd_link_pic (info)) |
53291d1f AM |
8319 | { |
8320 | relocation -= (input_section->output_section->vma | |
8321 | + input_section->output_offset | |
8322 | + rel->r_offset - 4); | |
8323 | stub = shared_stub_entry; | |
95f0d0d2 AM |
8324 | bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12); |
8325 | bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8); | |
8326 | bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4); | |
53291d1f AM |
8327 | stub += 3; |
8328 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8329 | } | |
8330 | else | |
8331 | { | |
8332 | stub = stub_entry; | |
8333 | size = ARRAY_SIZE (stub_entry); | |
8334 | } | |
9abc968f | 8335 | |
9abc968f | 8336 | relocation += addend; |
0e1862bb | 8337 | if (bfd_link_relocatable (info)) |
53291d1f AM |
8338 | relocation = 0; |
8339 | ||
8340 | /* First insn is HA, second is LO. */ | |
8341 | insn = *stub++; | |
8342 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
95f0d0d2 | 8343 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8344 | insn_offset += 4; |
8345 | ||
8346 | insn = *stub++; | |
8347 | insn |= relocation & 0xffff; | |
95f0d0d2 | 8348 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8349 | insn_offset += 4; |
8350 | size -= 2; | |
8351 | ||
8352 | while (size != 0) | |
8353 | { | |
8354 | insn = *stub++; | |
8355 | --size; | |
95f0d0d2 | 8356 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8357 | insn_offset += 4; |
8358 | } | |
9bc4e62b NS |
8359 | |
8360 | /* Rewrite the reloc and convert one of the trailing nop | |
8361 | relocs to describe this relocation. */ | |
8362 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
8363 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
8364 | wrel->r_offset = rel->r_offset + d_offset; |
8365 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
8366 | wrel->r_addend = rel->r_addend; | |
8367 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
8368 | wrel++, rel++; | |
8369 | wrel->r_offset += 4; | |
8370 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 8371 | } |
8517fae7 | 8372 | continue; |
deaaf2f3 | 8373 | |
70bccea4 | 8374 | /* Indirect .sdata relocation. */ |
7619e7c7 | 8375 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 8376 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
8377 | if (!is_static_defined (htab->sdata[0].sym)) |
8378 | { | |
8379 | unresolved_reloc = TRUE; | |
8380 | break; | |
8381 | } | |
7619e7c7 | 8382 | relocation |
76750a2f AM |
8383 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
8384 | h, relocation, rel); | |
bd6c6e2b | 8385 | addend = 0; |
252b5132 RH |
8386 | break; |
8387 | ||
70bccea4 | 8388 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 8389 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 8390 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
8391 | if (!is_static_defined (htab->sdata[1].sym)) |
8392 | { | |
8393 | unresolved_reloc = TRUE; | |
8394 | break; | |
8395 | } | |
7619e7c7 | 8396 | relocation |
76750a2f AM |
8397 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
8398 | h, relocation, rel); | |
bd6c6e2b | 8399 | addend = 0; |
252b5132 RH |
8400 | break; |
8401 | ||
70bccea4 AM |
8402 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
8403 | section, not the actual VMA. This is appropriate when generating | |
8404 | an embedded ELF object, for which the .got section acts like the | |
8405 | AIX .toc section. */ | |
7619e7c7 | 8406 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
8407 | if (sec == NULL || sec->output_section == NULL) |
8408 | { | |
8409 | unresolved_reloc = TRUE; | |
8410 | break; | |
8411 | } | |
a0f49396 NC |
8412 | BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec), |
8413 | ".got") == 0 | |
8414 | || strcmp (bfd_get_section_name (sec->owner, sec), | |
8415 | ".cgot") == 0); | |
252b5132 | 8416 | |
3b4f3a11 | 8417 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
8418 | break; |
8419 | ||
7619e7c7 | 8420 | case R_PPC_PLTREL24: |
f75e0e33 AM |
8421 | if (h != NULL && ifunc == NULL) |
8422 | { | |
cbf95972 AM |
8423 | struct plt_entry *ent; |
8424 | ||
8425 | ent = find_plt_ent (&h->plt.plist, got2, | |
8426 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 | 8427 | if (ent == NULL |
ce558b89 | 8428 | || htab->elf.splt == NULL) |
f75e0e33 AM |
8429 | { |
8430 | /* We didn't make a PLT entry for this symbol. This | |
8431 | happens when statically linking PIC code, or when | |
8432 | using -Bsymbolic. */ | |
8433 | } | |
8434 | else | |
8435 | { | |
8436 | /* Relocation is to the entry for this symbol in the | |
8437 | procedure linkage table. */ | |
8438 | unresolved_reloc = FALSE; | |
8439 | if (htab->plt_type == PLT_NEW) | |
8440 | relocation = (htab->glink->output_section->vma | |
8441 | + htab->glink->output_offset | |
8442 | + ent->glink_offset); | |
8443 | else | |
ce558b89 AM |
8444 | relocation = (htab->elf.splt->output_section->vma |
8445 | + htab->elf.splt->output_offset | |
f75e0e33 AM |
8446 | + ent->plt.offset); |
8447 | } | |
8448 | } | |
252b5132 | 8449 | |
f75e0e33 AM |
8450 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
8451 | addend specifies the GOT pointer offset within .got2. | |
8452 | Don't apply it to the relocation field. */ | |
8453 | addend = 0; | |
8da6118f | 8454 | break; |
252b5132 | 8455 | |
23cedd1d AM |
8456 | case R_PPC_PLTSEQ: |
8457 | case R_PPC_PLTCALL: | |
08be3224 AM |
8458 | case R_PPC_PLT16_LO: |
8459 | case R_PPC_PLT16_HI: | |
8460 | case R_PPC_PLT16_HA: | |
2d7ad24e | 8461 | plt_list = NULL; |
08be3224 AM |
8462 | if (h != NULL) |
8463 | plt_list = &h->plt.plist; | |
2d7ad24e AM |
8464 | else if (ifunc != NULL) |
8465 | plt_list = ifunc; | |
8466 | else if (local_got_offsets != NULL) | |
8467 | { | |
8468 | struct plt_entry **local_plt; | |
8469 | local_plt = (struct plt_entry **) (local_got_offsets | |
8470 | + symtab_hdr->sh_info); | |
8471 | plt_list = local_plt + r_symndx; | |
8472 | } | |
08be3224 AM |
8473 | unresolved_reloc = TRUE; |
8474 | if (plt_list != NULL) | |
8475 | { | |
8476 | struct plt_entry *ent; | |
8477 | ||
8478 | ent = find_plt_ent (plt_list, got2, | |
8479 | bfd_link_pic (info) ? addend : 0); | |
2d7ad24e | 8480 | if (ent != NULL && ent->plt.offset != (bfd_vma) -1) |
08be3224 | 8481 | { |
2d7ad24e AM |
8482 | asection *plt; |
8483 | ||
08be3224 | 8484 | unresolved_reloc = FALSE; |
2d7ad24e AM |
8485 | plt = htab->elf.splt; |
8486 | if (!htab->elf.dynamic_sections_created | |
8487 | || h == NULL | |
8488 | || h->dynindx == -1) | |
8489 | { | |
8490 | if (ifunc != NULL) | |
8491 | plt = htab->elf.iplt; | |
8492 | else | |
8493 | plt = htab->pltlocal; | |
8494 | } | |
8495 | relocation = (plt->output_section->vma | |
8496 | + plt->output_offset | |
08be3224 AM |
8497 | + ent->plt.offset); |
8498 | if (bfd_link_pic (info)) | |
8499 | { | |
8500 | bfd_vma got = 0; | |
8501 | ||
8502 | if (ent->addend >= 32768) | |
8503 | got = (ent->addend | |
8504 | + ent->sec->output_section->vma | |
8505 | + ent->sec->output_offset); | |
8506 | else | |
8507 | got = SYM_VAL (htab->elf.hgot); | |
8508 | relocation -= got; | |
8509 | } | |
8510 | } | |
8511 | } | |
8512 | addend = 0; | |
8513 | break; | |
8514 | ||
70bccea4 | 8515 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 8516 | case R_PPC_SDAREL16: |
252b5132 RH |
8517 | { |
8518 | const char *name; | |
bd6c6e2b | 8519 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 8520 | |
bd6c6e2b AM |
8521 | if (sec == NULL |
8522 | || sec->output_section == NULL | |
8523 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
8524 | { |
8525 | unresolved_reloc = TRUE; | |
8526 | break; | |
8527 | } | |
bd6c6e2b | 8528 | addend -= SYM_VAL (sda); |
3b4f3a11 | 8529 | |
a0f49396 | 8530 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8531 | if (!(strcmp (name, ".sdata") == 0 |
8532 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 8533 | { |
cf97bcb0 | 8534 | _bfd_error_handler |
695344c0 | 8535 | /* xgettext:c-format */ |
cf97bcb0 AM |
8536 | (_("%pB: the target (%s) of a %s relocation is " |
8537 | "in the wrong output section (%s)"), | |
d003868e | 8538 | input_bfd, |
55fd94b0 AM |
8539 | sym_name, |
8540 | howto->name, | |
8541 | name); | |
252b5132 | 8542 | } |
252b5132 RH |
8543 | } |
8544 | break; | |
8545 | ||
70bccea4 | 8546 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 8547 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
8548 | { |
8549 | const char *name; | |
bd6c6e2b | 8550 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 8551 | |
bd6c6e2b AM |
8552 | if (sec == NULL |
8553 | || sec->output_section == NULL | |
8554 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
8555 | { |
8556 | unresolved_reloc = TRUE; | |
8557 | break; | |
8558 | } | |
bd6c6e2b | 8559 | addend -= SYM_VAL (sda); |
3b4f3a11 | 8560 | |
a0f49396 | 8561 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8562 | if (!(strcmp (name, ".sdata2") == 0 |
8563 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 8564 | { |
cf97bcb0 | 8565 | _bfd_error_handler |
695344c0 | 8566 | /* xgettext:c-format */ |
cf97bcb0 AM |
8567 | (_("%pB: the target (%s) of a %s relocation is " |
8568 | "in the wrong output section (%s)"), | |
d003868e | 8569 | input_bfd, |
55fd94b0 AM |
8570 | sym_name, |
8571 | howto->name, | |
8572 | name); | |
252b5132 | 8573 | } |
252b5132 RH |
8574 | } |
8575 | break; | |
8576 | ||
b9c361e0 | 8577 | case R_PPC_VLE_LO16A: |
86c95733 | 8578 | relocation = relocation + addend; |
08dc996f AM |
8579 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8580 | contents + rel->r_offset, relocation, | |
8581 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8582 | goto copy_reloc; |
b9c361e0 JL |
8583 | |
8584 | case R_PPC_VLE_LO16D: | |
86c95733 | 8585 | relocation = relocation + addend; |
08dc996f AM |
8586 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8587 | contents + rel->r_offset, relocation, | |
8588 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8589 | goto copy_reloc; |
b9c361e0 JL |
8590 | |
8591 | case R_PPC_VLE_HI16A: | |
86c95733 | 8592 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
8593 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8594 | contents + rel->r_offset, relocation, | |
8595 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8596 | goto copy_reloc; |
b9c361e0 JL |
8597 | |
8598 | case R_PPC_VLE_HI16D: | |
86c95733 | 8599 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
8600 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8601 | contents + rel->r_offset, relocation, | |
8602 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8603 | goto copy_reloc; |
b9c361e0 JL |
8604 | |
8605 | case R_PPC_VLE_HA16A: | |
86c95733 | 8606 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
8607 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8608 | contents + rel->r_offset, relocation, | |
8609 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8610 | goto copy_reloc; |
b9c361e0 JL |
8611 | |
8612 | case R_PPC_VLE_HA16D: | |
86c95733 | 8613 | relocation = (relocation + addend + 0x8000) >> 16; |
08dc996f AM |
8614 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8615 | contents + rel->r_offset, relocation, | |
8616 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8617 | goto copy_reloc; |
b9c361e0 | 8618 | |
70bccea4 | 8619 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 8620 | case R_PPC_EMB_SDA21: |
b9c361e0 | 8621 | case R_PPC_VLE_SDA21: |
7619e7c7 | 8622 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 8623 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
8624 | { |
8625 | const char *name; | |
8626 | int reg; | |
86c95733 | 8627 | unsigned int insn; |
bd6c6e2b | 8628 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 8629 | |
3b4f3a11 AM |
8630 | if (sec == NULL || sec->output_section == NULL) |
8631 | { | |
8632 | unresolved_reloc = TRUE; | |
8633 | break; | |
8634 | } | |
8635 | ||
a0f49396 | 8636 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8637 | if (strcmp (name, ".sdata") == 0 |
8638 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
8639 | { |
8640 | reg = 13; | |
bd6c6e2b | 8641 | sda = htab->sdata[0].sym; |
252b5132 | 8642 | } |
93d1b056 AM |
8643 | else if (strcmp (name, ".sdata2") == 0 |
8644 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
8645 | { |
8646 | reg = 2; | |
bd6c6e2b | 8647 | sda = htab->sdata[1].sym; |
252b5132 | 8648 | } |
8da6118f KH |
8649 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
8650 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
8651 | { |
8652 | reg = 0; | |
8653 | } | |
252b5132 RH |
8654 | else |
8655 | { | |
cf97bcb0 | 8656 | _bfd_error_handler |
695344c0 | 8657 | /* xgettext:c-format */ |
cf97bcb0 AM |
8658 | (_("%pB: the target (%s) of a %s relocation is " |
8659 | "in the wrong output section (%s)"), | |
d003868e | 8660 | input_bfd, |
55fd94b0 AM |
8661 | sym_name, |
8662 | howto->name, | |
8663 | name); | |
252b5132 RH |
8664 | |
8665 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8666 | ret = FALSE; |
c316a17c | 8667 | goto copy_reloc; |
252b5132 RH |
8668 | } |
8669 | ||
bd6c6e2b AM |
8670 | if (sda != NULL) |
8671 | { | |
8672 | if (!is_static_defined (sda)) | |
8673 | { | |
8674 | unresolved_reloc = TRUE; | |
8675 | break; | |
8676 | } | |
8677 | addend -= SYM_VAL (sda); | |
8678 | } | |
8679 | ||
6f5601c4 AM |
8680 | if (r_type == R_PPC_EMB_RELSDA) |
8681 | break; | |
8682 | ||
8683 | /* The PowerPC Embedded Application Binary Interface | |
8684 | version 1.0 insanely chose to specify R_PPC_EMB_SDA21 | |
8685 | operating on a 24-bit field at r_offset. GNU as and | |
8686 | GNU ld have always assumed R_PPC_EMB_SDA21 operates on | |
8687 | a 32-bit bit insn at r_offset. Cope with object file | |
8688 | producers that possibly comply with the EABI in | |
8689 | generating an odd r_offset for big-endian objects. */ | |
8690 | if (r_type == R_PPC_EMB_SDA21) | |
8691 | rel->r_offset &= ~1; | |
8692 | ||
95f0d0d2 | 8693 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
b9c361e0 JL |
8694 | if (reg == 0 |
8695 | && (r_type == R_PPC_VLE_SDA21 | |
8696 | || r_type == R_PPC_VLE_SDA21_LO)) | |
8697 | { | |
86c95733 AM |
8698 | relocation = relocation + addend; |
8699 | addend = 0; | |
8700 | ||
8701 | /* Force e_li insn, keeping RT from original insn. */ | |
8702 | insn &= 0x1f << 21; | |
8703 | insn |= 28u << 26; | |
8704 | ||
8705 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
8706 | /* Top 4 bits of value to 17..20. */ | |
8707 | insn |= (relocation & 0xf0000) >> 5; | |
8708 | /* Next 5 bits of the value to 11..15. */ | |
8709 | insn |= (relocation & 0xf800) << 5; | |
8710 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
8711 | insn |= relocation & 0x7ff; | |
8712 | ||
95f0d0d2 | 8713 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
c3301df1 AM |
8714 | |
8715 | if (r_type == R_PPC_VLE_SDA21 | |
8716 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
8717 | goto overflow; | |
c316a17c | 8718 | goto copy_reloc; |
b9c361e0 | 8719 | } |
6f5601c4 AM |
8720 | /* Fill in register field. */ |
8721 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); | |
95f0d0d2 | 8722 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
8723 | } |
8724 | break; | |
8725 | ||
b9c361e0 JL |
8726 | case R_PPC_VLE_SDAREL_LO16A: |
8727 | case R_PPC_VLE_SDAREL_LO16D: | |
8728 | case R_PPC_VLE_SDAREL_HI16A: | |
8729 | case R_PPC_VLE_SDAREL_HI16D: | |
8730 | case R_PPC_VLE_SDAREL_HA16A: | |
8731 | case R_PPC_VLE_SDAREL_HA16D: | |
8732 | { | |
8733 | bfd_vma value; | |
8734 | const char *name; | |
b9c361e0 JL |
8735 | struct elf_link_hash_entry *sda = NULL; |
8736 | ||
8737 | if (sec == NULL || sec->output_section == NULL) | |
8738 | { | |
8739 | unresolved_reloc = TRUE; | |
8740 | break; | |
8741 | } | |
8742 | ||
a0f49396 | 8743 | name = bfd_get_section_name (output_bfd, sec->output_section); |
93d1b056 AM |
8744 | if (strcmp (name, ".sdata") == 0 |
8745 | || strcmp (name, ".sbss") == 0) | |
5499c7c7 | 8746 | sda = htab->sdata[0].sym; |
93d1b056 AM |
8747 | else if (strcmp (name, ".sdata2") == 0 |
8748 | || strcmp (name, ".sbss2") == 0) | |
5499c7c7 | 8749 | sda = htab->sdata[1].sym; |
b9c361e0 JL |
8750 | else |
8751 | { | |
4eca0228 | 8752 | _bfd_error_handler |
695344c0 | 8753 | /* xgettext:c-format */ |
871b3ab2 | 8754 | (_("%pB: the target (%s) of a %s relocation is " |
b9c361e0 JL |
8755 | "in the wrong output section (%s)"), |
8756 | input_bfd, | |
8757 | sym_name, | |
8758 | howto->name, | |
8759 | name); | |
8760 | ||
8761 | bfd_set_error (bfd_error_bad_value); | |
8762 | ret = FALSE; | |
c316a17c | 8763 | goto copy_reloc; |
b9c361e0 JL |
8764 | } |
8765 | ||
5499c7c7 | 8766 | if (sda == NULL || !is_static_defined (sda)) |
b9c361e0 | 8767 | { |
5499c7c7 AM |
8768 | unresolved_reloc = TRUE; |
8769 | break; | |
b9c361e0 | 8770 | } |
5499c7c7 | 8771 | value = relocation + addend - SYM_VAL (sda); |
86c95733 AM |
8772 | |
8773 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
08dc996f AM |
8774 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8775 | contents + rel->r_offset, value, | |
8776 | split16a_type, | |
8777 | htab->params->vle_reloc_fixup); | |
86c95733 | 8778 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) |
08dc996f AM |
8779 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8780 | contents + rel->r_offset, value, | |
8781 | split16d_type, | |
8782 | htab->params->vle_reloc_fixup); | |
86c95733 | 8783 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) |
b9c361e0 | 8784 | { |
86c95733 | 8785 | value = value >> 16; |
08dc996f AM |
8786 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8787 | contents + rel->r_offset, value, | |
8788 | split16a_type, | |
8789 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 8790 | } |
86c95733 | 8791 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 8792 | { |
86c95733 | 8793 | value = value >> 16; |
08dc996f AM |
8794 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8795 | contents + rel->r_offset, value, | |
8796 | split16d_type, | |
8797 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 8798 | } |
86c95733 | 8799 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 8800 | { |
86c95733 | 8801 | value = (value + 0x8000) >> 16; |
08dc996f AM |
8802 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8803 | contents + rel->r_offset, value, | |
8804 | split16a_type, | |
8805 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 8806 | } |
86c95733 | 8807 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 8808 | { |
86c95733 | 8809 | value = (value + 0x8000) >> 16; |
08dc996f AM |
8810 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8811 | contents + rel->r_offset, value, | |
8812 | split16d_type, | |
8813 | htab->params->vle_reloc_fixup); | |
b9c361e0 JL |
8814 | } |
8815 | } | |
c316a17c | 8816 | goto copy_reloc; |
b9c361e0 | 8817 | |
83eef883 AFB |
8818 | case R_PPC_VLE_ADDR20: |
8819 | ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation); | |
8820 | continue; | |
8821 | ||
70bccea4 | 8822 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
8823 | case R_PPC_SECTOFF: |
8824 | case R_PPC_SECTOFF_LO: | |
8825 | case R_PPC_SECTOFF_HI: | |
8826 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
8827 | if (sec == NULL || sec->output_section == NULL) |
8828 | { | |
8829 | unresolved_reloc = TRUE; | |
8830 | break; | |
8831 | } | |
252b5132 | 8832 | addend -= sec->output_section->vma; |
252b5132 RH |
8833 | break; |
8834 | ||
70bccea4 | 8835 | /* Negative relocations. */ |
7619e7c7 AM |
8836 | case R_PPC_EMB_NADDR32: |
8837 | case R_PPC_EMB_NADDR16: | |
8838 | case R_PPC_EMB_NADDR16_LO: | |
8839 | case R_PPC_EMB_NADDR16_HI: | |
8840 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 8841 | addend -= 2 * relocation; |
252b5132 RH |
8842 | break; |
8843 | ||
7619e7c7 AM |
8844 | case R_PPC_COPY: |
8845 | case R_PPC_GLOB_DAT: | |
8846 | case R_PPC_JMP_SLOT: | |
8847 | case R_PPC_RELATIVE: | |
e054468f | 8848 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
8849 | case R_PPC_PLT32: |
8850 | case R_PPC_PLTREL32: | |
7619e7c7 AM |
8851 | case R_PPC_ADDR30: |
8852 | case R_PPC_EMB_RELSEC16: | |
8853 | case R_PPC_EMB_RELST_LO: | |
8854 | case R_PPC_EMB_RELST_HI: | |
8855 | case R_PPC_EMB_RELST_HA: | |
8856 | case R_PPC_EMB_BIT_FLD: | |
cf97bcb0 AM |
8857 | /* xgettext:c-format */ |
8858 | _bfd_error_handler (_("%pB: %s unsupported"), | |
8859 | input_bfd, howto->name); | |
252b5132 RH |
8860 | |
8861 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 8862 | ret = FALSE; |
c316a17c | 8863 | goto copy_reloc; |
7619e7c7 | 8864 | } |
252b5132 | 8865 | |
23cedd1d AM |
8866 | switch (r_type) |
8867 | { | |
8868 | default: | |
8869 | break; | |
8870 | ||
8871 | case R_PPC_PLTCALL: | |
8872 | if (unresolved_reloc) | |
8873 | { | |
8874 | bfd_byte *p = contents + rel->r_offset; | |
8875 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8876 | insn &= 1; | |
8877 | bfd_put_32 (input_bfd, B | insn, p); | |
8878 | unresolved_reloc = save_unresolved_reloc; | |
8879 | r_type = R_PPC_REL24; | |
8880 | howto = ppc_elf_howto_table[r_type]; | |
8881 | } | |
8882 | else if (htab->plt_type != PLT_NEW) | |
8883 | info->callbacks->einfo | |
482f3505 | 8884 | (_("%X%P: %H: %s relocation unsupported for bss-plt\n"), |
23cedd1d AM |
8885 | input_bfd, input_section, rel->r_offset, |
8886 | howto->name); | |
8887 | break; | |
8888 | ||
8889 | case R_PPC_PLTSEQ: | |
8890 | case R_PPC_PLT16_HA: | |
8891 | case R_PPC_PLT16_LO: | |
8892 | if (unresolved_reloc) | |
8893 | { | |
8894 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8895 | bfd_put_32 (input_bfd, NOP, p); | |
8896 | unresolved_reloc = FALSE; | |
8897 | r_type = R_PPC_NONE; | |
8898 | howto = ppc_elf_howto_table[r_type]; | |
8899 | } | |
8900 | else if (htab->plt_type != PLT_NEW) | |
8901 | info->callbacks->einfo | |
482f3505 | 8902 | (_("%X%P: %H: %s relocation unsupported for bss-plt\n"), |
23cedd1d AM |
8903 | input_bfd, input_section, rel->r_offset, |
8904 | howto->name); | |
8905 | break; | |
8906 | } | |
8907 | ||
7619e7c7 AM |
8908 | /* Do any further special processing. */ |
8909 | switch (r_type) | |
8910 | { | |
8911 | default: | |
8912 | break; | |
8913 | ||
8914 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 8915 | case R_PPC_REL16_HA: |
a680de9a | 8916 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
8917 | case R_PPC_SECTOFF_HA: |
8918 | case R_PPC_TPREL16_HA: | |
8919 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
8920 | case R_PPC_EMB_NADDR16_HA: |
8921 | case R_PPC_EMB_RELST_HA: | |
8922 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 8923 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
8924 | 'sec' would be NULL, and we should leave the symbol |
8925 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
8926 | if (sec == NULL) |
8927 | break; | |
1a0670f3 | 8928 | /* Fall through. */ |
5c5f6e17 AM |
8929 | |
8930 | case R_PPC_PLT16_HA: | |
8931 | case R_PPC_GOT16_HA: | |
8932 | case R_PPC_GOT_TLSGD16_HA: | |
8933 | case R_PPC_GOT_TLSLD16_HA: | |
8934 | case R_PPC_GOT_TPREL16_HA: | |
8935 | case R_PPC_GOT_DTPREL16_HA: | |
8936 | /* Add 0x10000 if sign bit in 0:15 is set. | |
8937 | Bits 0:15 are not used. */ | |
8938 | addend += 0x8000; | |
7619e7c7 | 8939 | break; |
1fe532cf AM |
8940 | |
8941 | case R_PPC_ADDR16: | |
8942 | case R_PPC_ADDR16_LO: | |
8943 | case R_PPC_GOT16: | |
8944 | case R_PPC_GOT16_LO: | |
8945 | case R_PPC_SDAREL16: | |
8946 | case R_PPC_SECTOFF: | |
8947 | case R_PPC_SECTOFF_LO: | |
8948 | case R_PPC_DTPREL16: | |
8949 | case R_PPC_DTPREL16_LO: | |
8950 | case R_PPC_TPREL16: | |
8951 | case R_PPC_TPREL16_LO: | |
8952 | case R_PPC_GOT_TLSGD16: | |
8953 | case R_PPC_GOT_TLSGD16_LO: | |
8954 | case R_PPC_GOT_TLSLD16: | |
8955 | case R_PPC_GOT_TLSLD16_LO: | |
8956 | case R_PPC_GOT_DTPREL16: | |
8957 | case R_PPC_GOT_DTPREL16_LO: | |
8958 | case R_PPC_GOT_TPREL16: | |
8959 | case R_PPC_GOT_TPREL16_LO: | |
8960 | { | |
8961 | /* The 32-bit ABI lacks proper relocations to deal with | |
8962 | certain 64-bit instructions. Prevent damage to bits | |
8963 | that make up part of the insn opcode. */ | |
8964 | unsigned int insn, mask, lobit; | |
8965 | ||
95f0d0d2 | 8966 | insn = bfd_get_32 (input_bfd, |
c316a17c | 8967 | contents + rel->r_offset - d_offset); |
1fe532cf AM |
8968 | mask = 0; |
8969 | if (is_insn_ds_form (insn)) | |
8970 | mask = 3; | |
8971 | else if (is_insn_dq_form (insn)) | |
8972 | mask = 15; | |
8973 | else | |
8974 | break; | |
a680de9a PB |
8975 | relocation += addend; |
8976 | addend = insn & mask; | |
8977 | lobit = mask & relocation; | |
1fe532cf AM |
8978 | if (lobit != 0) |
8979 | { | |
a680de9a | 8980 | relocation ^= lobit; |
1fe532cf | 8981 | info->callbacks->einfo |
695344c0 | 8982 | /* xgettext:c-format */ |
174d0a74 | 8983 | (_("%H: error: %s against `%s' not a multiple of %u\n"), |
1fe532cf AM |
8984 | input_bfd, input_section, rel->r_offset, |
8985 | howto->name, sym_name, mask + 1); | |
8986 | bfd_set_error (bfd_error_bad_value); | |
8987 | ret = FALSE; | |
8988 | } | |
1fe532cf AM |
8989 | } |
8990 | break; | |
252b5132 RH |
8991 | } |
8992 | ||
252b5132 | 8993 | #ifdef DEBUG |
55fd94b0 AM |
8994 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
8995 | "offset = %ld, addend = %ld\n", | |
252b5132 | 8996 | howto->name, |
8da6118f | 8997 | (int) r_type, |
252b5132 RH |
8998 | sym_name, |
8999 | r_symndx, | |
7619e7c7 | 9000 | (long) rel->r_offset, |
8da6118f | 9001 | (long) addend); |
252b5132 RH |
9002 | #endif |
9003 | ||
7619e7c7 AM |
9004 | if (unresolved_reloc |
9005 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
9006 | && h->def_dynamic) |
9007 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
9008 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 9009 | { |
25f53a85 | 9010 | info->callbacks->einfo |
695344c0 | 9011 | /* xgettext:c-format */ |
174d0a74 | 9012 | (_("%H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 9013 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 9014 | howto->name, |
7619e7c7 AM |
9015 | sym_name); |
9016 | ret = FALSE; | |
9017 | } | |
9018 | ||
86c95733 AM |
9019 | /* 16-bit fields in insns mostly have signed values, but a |
9020 | few insns have 16-bit unsigned values. Really, we should | |
9021 | have different reloc types. */ | |
9022 | if (howto->complain_on_overflow != complain_overflow_dont | |
9023 | && howto->dst_mask == 0xffff | |
9024 | && (input_section->flags & SEC_CODE) != 0) | |
9025 | { | |
9026 | enum complain_overflow complain = complain_overflow_signed; | |
9027 | ||
9028 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9029 | { | |
9030 | unsigned int insn; | |
9031 | ||
9032 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
9033 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9034 | complain = complain_overflow_bitfield; | |
9035 | else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9036 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9037 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9038 | complain = complain_overflow_unsigned; |
9039 | } | |
9040 | if (howto->complain_on_overflow != complain) | |
9041 | { | |
9042 | alt_howto = *howto; | |
9043 | alt_howto.complain_on_overflow = complain; | |
9044 | howto = &alt_howto; | |
9045 | } | |
9046 | } | |
9047 | ||
a680de9a PB |
9048 | if (r_type == R_PPC_REL16DX_HA) |
9049 | { | |
9050 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
9051 | if (rel->r_offset + 4 > input_section->size) | |
9052 | r = bfd_reloc_outofrange; | |
9053 | else | |
9054 | { | |
9055 | unsigned int insn; | |
9056 | ||
9057 | relocation += addend; | |
9058 | relocation -= (rel->r_offset | |
9059 | + input_section->output_offset | |
9060 | + input_section->output_section->vma); | |
9061 | relocation >>= 16; | |
9062 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9063 | insn &= ~0x1fffc1; | |
9064 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
9065 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9066 | r = bfd_reloc_ok; | |
9067 | } | |
9068 | } | |
9069 | else | |
9070 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9071 | rel->r_offset, relocation, addend); | |
252b5132 | 9072 | |
7619e7c7 | 9073 | if (r != bfd_reloc_ok) |
252b5132 | 9074 | { |
7619e7c7 | 9075 | if (r == bfd_reloc_overflow) |
252b5132 | 9076 | { |
c3301df1 | 9077 | overflow: |
8131c122 AM |
9078 | /* On code like "if (foo) foo();" don't report overflow |
9079 | on a branch to zero when foo is undefined. */ | |
9080 | if (!warned | |
9081 | && !(h != NULL | |
9082 | && (h->root.type == bfd_link_hash_undefweak | |
9083 | || h->root.type == bfd_link_hash_undefined) | |
9084 | && is_branch_reloc (r_type))) | |
1a72702b AM |
9085 | info->callbacks->reloc_overflow |
9086 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
9087 | rel->r_addend, input_bfd, input_section, rel->r_offset); | |
dc1bc0c9 RH |
9088 | } |
9089 | else | |
9090 | { | |
25f53a85 | 9091 | info->callbacks->einfo |
695344c0 | 9092 | /* xgettext:c-format */ |
174d0a74 | 9093 | (_("%H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9094 | input_bfd, input_section, rel->r_offset, |
9095 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9096 | ret = FALSE; |
252b5132 RH |
9097 | } |
9098 | } | |
c316a17c AM |
9099 | copy_reloc: |
9100 | if (wrel != rel) | |
9101 | *wrel = *rel; | |
9102 | } | |
9103 | ||
9104 | if (wrel != rel) | |
9105 | { | |
9106 | Elf_Internal_Shdr *rel_hdr; | |
9107 | size_t deleted = rel - wrel; | |
9108 | ||
9109 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
9110 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9111 | if (rel_hdr->sh_size == 0) | |
9112 | { | |
9113 | /* It is too late to remove an empty reloc section. Leave | |
9114 | one NONE reloc. | |
9115 | ??? What is wrong with an empty section??? */ | |
9116 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
9117 | deleted -= 1; | |
9118 | wrel++; | |
9119 | } | |
9120 | relend = wrel; | |
9121 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
9122 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9123 | input_section->reloc_count -= deleted; | |
252b5132 RH |
9124 | } |
9125 | ||
252b5132 RH |
9126 | #ifdef DEBUG |
9127 | fprintf (stderr, "\n"); | |
9128 | #endif | |
9129 | ||
53291d1f AM |
9130 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9131 | && input_section->size != input_section->rawsize | |
9132 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9133 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9134 | { | |
9135 | /* Branch around the trampolines. */ | |
9136 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9137 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9138 | } | |
9139 | ||
5446cbdf | 9140 | if (htab->params->ppc476_workaround |
795bc6b3 | 9141 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 9142 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
9143 | || (input_section->output_section->alignment_power |
9144 | >= htab->params->pagesize_p2))) | |
5446cbdf | 9145 | { |
5446cbdf | 9146 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 9147 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 9148 | |
5446cbdf | 9149 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
9150 | { |
9151 | bfd_byte *p; | |
9152 | unsigned int n; | |
9153 | bfd_byte fill[4]; | |
9154 | ||
9155 | bfd_put_32 (input_bfd, BA, fill); | |
9156 | p = contents + input_section->size - relax_info->workaround_size; | |
9157 | n = relax_info->workaround_size >> 2; | |
9158 | while (n--) | |
9159 | { | |
9160 | memcpy (p, fill, 4); | |
9161 | p += 4; | |
9162 | } | |
9163 | } | |
5446cbdf AM |
9164 | |
9165 | /* The idea is: Replace the last instruction on a page with a | |
9166 | branch to a patch area. Put the insn there followed by a | |
9167 | branch back to the next page. Complicated a little by | |
9168 | needing to handle moved conditional branches, and by not | |
9169 | wanting to touch data-in-text. */ | |
9170 | ||
9171 | start_addr = (input_section->output_section->vma | |
9172 | + input_section->output_offset); | |
9173 | end_addr = (start_addr + input_section->size | |
9174 | - relax_info->workaround_size); | |
9175 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9176 | addr < end_addr; | |
9177 | addr += pagesize) | |
9178 | { | |
9179 | bfd_vma offset = addr - start_addr; | |
9180 | Elf_Internal_Rela *lo, *hi; | |
9181 | bfd_boolean is_data; | |
9182 | bfd_vma patch_off, patch_addr; | |
9183 | unsigned int insn; | |
9184 | ||
9185 | /* Do we have a data reloc at this offset? If so, leave | |
9186 | the word alone. */ | |
9187 | is_data = FALSE; | |
9188 | lo = relocs; | |
668e22e5 AM |
9189 | hi = relend; |
9190 | rel = NULL; | |
5446cbdf AM |
9191 | while (lo < hi) |
9192 | { | |
9193 | rel = lo + (hi - lo) / 2; | |
9194 | if (rel->r_offset < offset) | |
9195 | lo = rel + 1; | |
668e22e5 | 9196 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9197 | hi = rel; |
9198 | else | |
9199 | { | |
9200 | switch (ELF32_R_TYPE (rel->r_info)) | |
9201 | { | |
9202 | case R_PPC_ADDR32: | |
9203 | case R_PPC_UADDR32: | |
9204 | case R_PPC_REL32: | |
9205 | case R_PPC_ADDR30: | |
9206 | is_data = TRUE; | |
9207 | break; | |
9208 | default: | |
9209 | break; | |
9210 | } | |
9211 | break; | |
9212 | } | |
9213 | } | |
9214 | if (is_data) | |
9215 | continue; | |
9216 | ||
b4ab4364 AM |
9217 | /* Some instructions can be left alone too. Unconditional |
9218 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9219 | avoid the icache failure. | |
9220 | ||
9221 | The problem occurs due to prefetch across a page boundary | |
9222 | where stale instructions can be fetched from the next | |
9223 | page, and the mechanism for flushing these bad | |
9224 | instructions fails under certain circumstances. The | |
9225 | unconditional branches: | |
9226 | 1) Branch: b, bl, ba, bla, | |
9227 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9228 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9229 | where (2) and (3) have BO=0x14 making them unconditional, | |
9230 | prevent the bad prefetch because the prefetch itself is | |
9231 | affected by these instructions. This happens even if the | |
9232 | instruction is not executed. | |
9233 | ||
9234 | A bctr example: | |
9235 | . | |
9236 | . lis 9,new_page@ha | |
9237 | . addi 9,9,new_page@l | |
9238 | . mtctr 9 | |
9239 | . bctr | |
9240 | . nop | |
9241 | . nop | |
9242 | . new_page: | |
9243 | . | |
9244 | The bctr is not predicted taken due to ctr not being | |
9245 | ready, so prefetch continues on past the bctr into the | |
9246 | new page which might have stale instructions. If they | |
9247 | fail to be flushed, then they will be executed after the | |
9248 | bctr executes. Either of the following modifications | |
9249 | prevent the bad prefetch from happening in the first | |
9250 | place: | |
9251 | . | |
1b786873 L |
9252 | . lis 9,new_page@ha lis 9,new_page@ha |
9253 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9254 | . mtctr 9 mtctr 9 | |
9255 | . bctr bctr | |
b4ab4364 | 9256 | . nop b somewhere_else |
1b786873 L |
9257 | . b somewhere_else nop |
9258 | . new_page: new_page: | |
b4ab4364 | 9259 | . */ |
5446cbdf | 9260 | insn = bfd_get_32 (input_bfd, contents + offset); |
07d6d2b8 AM |
9261 | if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9262 | || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
9263 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ | |
5446cbdf | 9264 | || ((insn & (0x3f << 26)) == (19u << 26) |
b4ab4364 | 9265 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
07d6d2b8 | 9266 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ |
5446cbdf AM |
9267 | continue; |
9268 | ||
9269 | patch_addr = (start_addr + input_section->size | |
9270 | - relax_info->workaround_size); | |
9271 | patch_addr = (patch_addr + 15) & -16; | |
9272 | patch_off = patch_addr - start_addr; | |
9273 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9274 | |
9275 | if (rel != NULL | |
9276 | && rel->r_offset >= offset | |
9277 | && rel->r_offset < offset + 4) | |
9278 | { | |
f8b44781 AM |
9279 | asection *sreloc; |
9280 | ||
668e22e5 AM |
9281 | /* If the insn we are patching had a reloc, adjust the |
9282 | reloc r_offset so that the reloc applies to the moved | |
9283 | location. This matters for -r and --emit-relocs. */ | |
9284 | if (rel + 1 != relend) | |
9285 | { | |
9286 | Elf_Internal_Rela tmp = *rel; | |
9287 | ||
9288 | /* Keep the relocs sorted by r_offset. */ | |
9289 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9290 | relend[-1] = tmp; | |
9291 | } | |
9292 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
9293 | |
9294 | /* Adjust REL16 addends too. */ | |
9295 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
9296 | { | |
9297 | case R_PPC_REL16: | |
9298 | case R_PPC_REL16_LO: | |
9299 | case R_PPC_REL16_HI: | |
9300 | case R_PPC_REL16_HA: | |
9301 | relend[-1].r_addend += patch_off - offset; | |
9302 | break; | |
9303 | default: | |
9304 | break; | |
9305 | } | |
9306 | ||
9307 | /* If we are building a PIE or shared library with | |
9308 | non-PIC objects, perhaps we had a dynamic reloc too? | |
9309 | If so, the dynamic reloc must move with the insn. */ | |
9310 | sreloc = elf_section_data (input_section)->sreloc; | |
9311 | if (sreloc != NULL) | |
9312 | { | |
1d5c94cb | 9313 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
9314 | bfd_vma soffset; |
9315 | ||
1d5c94cb AM |
9316 | slo = (Elf32_External_Rela *) sreloc->contents; |
9317 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
9318 | soffset = (offset + input_section->output_section->vma |
9319 | + input_section->output_offset); | |
9320 | while (slo < shi) | |
9321 | { | |
1d5c94cb AM |
9322 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
9323 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
9324 | &outrel); | |
f8b44781 AM |
9325 | if (outrel.r_offset < soffset) |
9326 | slo = srel + 1; | |
9327 | else if (outrel.r_offset > soffset + 3) | |
9328 | shi = srel; | |
9329 | else | |
9330 | { | |
1d5c94cb | 9331 | if (srel + 1 != srelend) |
f8b44781 | 9332 | { |
1d5c94cb AM |
9333 | memmove (srel, srel + 1, |
9334 | (srelend - (srel + 1)) * sizeof (*srel)); | |
9335 | srel = srelend - 1; | |
f8b44781 AM |
9336 | } |
9337 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
9338 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
9339 | (bfd_byte *) srel); | |
f8b44781 AM |
9340 | break; |
9341 | } | |
9342 | } | |
9343 | } | |
668e22e5 AM |
9344 | } |
9345 | else | |
9346 | rel = NULL; | |
9347 | ||
5446cbdf AM |
9348 | if ((insn & (0x3f << 26)) == (16u << 26) /* bc */ |
9349 | && (insn & 2) == 0 /* relative */) | |
9350 | { | |
9351 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9352 | ||
9353 | delta += offset - patch_off; | |
0e1862bb | 9354 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 9355 | delta = 0; |
0e1862bb | 9356 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
9357 | { |
9358 | enum elf_ppc_reloc_type r_type; | |
9359 | ||
9360 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9361 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9362 | insn |= BRANCH_PREDICT_BIT; | |
9363 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9364 | insn &= ~BRANCH_PREDICT_BIT; | |
9365 | else | |
9366 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9367 | ||
9368 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9369 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9370 | && delta + 0x8000 < 0x10000 | |
9371 | && (bfd_signed_vma) delta < 0) | |
9372 | insn ^= BRANCH_PREDICT_BIT; | |
9373 | } | |
5446cbdf AM |
9374 | if (delta + 0x8000 < 0x10000) |
9375 | { | |
9376 | bfd_put_32 (input_bfd, | |
9377 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9378 | contents + patch_off); | |
9379 | patch_off += 4; | |
9380 | bfd_put_32 (input_bfd, | |
9381 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9382 | contents + patch_off); | |
9383 | patch_off += 4; | |
9384 | } | |
9385 | else | |
9386 | { | |
668e22e5 AM |
9387 | if (rel != NULL) |
9388 | { | |
9389 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9390 | ||
9391 | relend[-1].r_offset += 8; | |
9392 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9393 | } | |
5446cbdf AM |
9394 | bfd_put_32 (input_bfd, |
9395 | (insn & ~0xfffc) | 8, | |
9396 | contents + patch_off); | |
9397 | patch_off += 4; | |
9398 | bfd_put_32 (input_bfd, | |
9399 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9400 | contents + patch_off); | |
9401 | patch_off += 4; | |
9402 | bfd_put_32 (input_bfd, | |
9403 | B | ((delta - 8) & 0x3fffffc), | |
9404 | contents + patch_off); | |
9405 | patch_off += 4; | |
9406 | } | |
9407 | } | |
9408 | else | |
9409 | { | |
9410 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9411 | patch_off += 4; | |
9412 | bfd_put_32 (input_bfd, | |
9413 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9414 | contents + patch_off); | |
9415 | patch_off += 4; | |
9416 | } | |
9417 | BFD_ASSERT (patch_off <= input_section->size); | |
9418 | relax_info->workaround_size = input_section->size - patch_off; | |
9419 | } | |
9420 | } | |
9421 | ||
252b5132 RH |
9422 | return ret; |
9423 | } | |
252b5132 | 9424 | \f |
49c09209 | 9425 | /* Write out the PLT relocs and entries for H. */ |
c5fccbec | 9426 | |
b34976b6 | 9427 | static bfd_boolean |
49c09209 | 9428 | write_global_sym_plt (struct elf_link_hash_entry *h, void *inf) |
e1a9cb8e | 9429 | { |
49c09209 AM |
9430 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9431 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
a6aa5195 AM |
9432 | struct plt_entry *ent; |
9433 | bfd_boolean doneone; | |
e1a9cb8e | 9434 | |
a6aa5195 AM |
9435 | doneone = FALSE; |
9436 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9437 | if (ent->plt.offset != (bfd_vma) -1) | |
9438 | { | |
9439 | if (!doneone) | |
9440 | { | |
9441 | Elf_Internal_Rela rela; | |
9442 | bfd_byte *loc; | |
9443 | bfd_vma reloc_index; | |
2d7ad24e AM |
9444 | asection *plt = htab->elf.splt; |
9445 | asection *relplt = htab->elf.srelplt; | |
e1a9cb8e | 9446 | |
e054468f | 9447 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9448 | || !htab->elf.dynamic_sections_created |
9449 | || h->dynindx == -1) | |
9d8504b1 PB |
9450 | reloc_index = ent->plt.offset / 4; |
9451 | else | |
9452 | { | |
9453 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
9454 | / htab->plt_slot_size); | |
9455 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 9456 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
9457 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
9458 | } | |
9459 | ||
a6aa5195 AM |
9460 | /* This symbol has an entry in the procedure linkage table. |
9461 | Set it up. */ | |
e054468f | 9462 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
9463 | && htab->elf.dynamic_sections_created |
9464 | && h->dynindx != -1) | |
a6aa5195 | 9465 | { |
9d8504b1 PB |
9466 | bfd_vma got_offset; |
9467 | const bfd_vma *plt_entry; | |
5b914448 | 9468 | |
9d8504b1 PB |
9469 | /* The first three entries in .got.plt are reserved. */ |
9470 | got_offset = (reloc_index + 3) * 4; | |
9471 | ||
9472 | /* Use the right PLT. */ | |
0e1862bb | 9473 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
9474 | : ppc_elf_vxworks_plt_entry; |
9475 | ||
9476 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 9477 | if (bfd_link_pic (info)) |
9d8504b1 | 9478 | { |
49c09209 | 9479 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9480 | plt_entry[0] | PPC_HA (got_offset), |
2d7ad24e | 9481 | plt->contents + ent->plt.offset + 0); |
49c09209 | 9482 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9483 | plt_entry[1] | PPC_LO (got_offset), |
2d7ad24e | 9484 | plt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
9485 | } |
9486 | else | |
9487 | { | |
e87d4038 | 9488 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 | 9489 | |
49c09209 | 9490 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9491 | plt_entry[0] | PPC_HA (got_loc), |
2d7ad24e | 9492 | plt->contents + ent->plt.offset + 0); |
49c09209 | 9493 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9494 | plt_entry[1] | PPC_LO (got_loc), |
2d7ad24e | 9495 | plt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
9496 | } |
9497 | ||
49c09209 | 9498 | bfd_put_32 (info->output_bfd, plt_entry[2], |
2d7ad24e | 9499 | plt->contents + ent->plt.offset + 8); |
49c09209 | 9500 | bfd_put_32 (info->output_bfd, plt_entry[3], |
2d7ad24e | 9501 | plt->contents + ent->plt.offset + 12); |
9d8504b1 PB |
9502 | |
9503 | /* This instruction is an immediate load. The value loaded is | |
9504 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
9505 | start of the .rela.plt section. The value is stored in the | |
9506 | low-order 16 bits of the load instruction. */ | |
9507 | /* NOTE: It appears that this is now an index rather than a | |
9508 | prescaled offset. */ | |
49c09209 | 9509 | bfd_put_32 (info->output_bfd, |
9d8504b1 | 9510 | plt_entry[4] | reloc_index, |
2d7ad24e | 9511 | plt->contents + ent->plt.offset + 16); |
9d8504b1 PB |
9512 | /* This instruction is a PC-relative branch whose target is |
9513 | the start of the PLT section. The address of this branch | |
9514 | instruction is 20 bytes beyond the start of this PLT entry. | |
9515 | The address is encoded in bits 6-29, inclusive. The value | |
9516 | stored is right-shifted by two bits, permitting a 26-bit | |
9517 | offset. */ | |
49c09209 | 9518 | bfd_put_32 (info->output_bfd, |
5b914448 | 9519 | (plt_entry[5] |
9d8504b1 | 9520 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
2d7ad24e | 9521 | plt->contents + ent->plt.offset + 20); |
49c09209 | 9522 | bfd_put_32 (info->output_bfd, plt_entry[6], |
2d7ad24e | 9523 | plt->contents + ent->plt.offset + 24); |
49c09209 | 9524 | bfd_put_32 (info->output_bfd, plt_entry[7], |
2d7ad24e | 9525 | plt->contents + ent->plt.offset + 28); |
9d8504b1 PB |
9526 | |
9527 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 9528 | the address immediately after the "bctr" instruction |
9d8504b1 | 9529 | in this PLT entry. */ |
2d7ad24e AM |
9530 | bfd_put_32 (info->output_bfd, (plt->output_section->vma |
9531 | + plt->output_offset | |
9532 | + ent->plt.offset + 16), | |
ce558b89 | 9533 | htab->elf.sgotplt->contents + got_offset); |
9d8504b1 | 9534 | |
0e1862bb | 9535 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
9536 | { |
9537 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
9538 | loc = htab->srelplt2->contents | |
9539 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
9540 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
9541 | * sizeof (Elf32_External_Rela)); | |
9542 | ||
9543 | /* Provide the @ha relocation for the first instruction. */ | |
2d7ad24e AM |
9544 | rela.r_offset = (plt->output_section->vma |
9545 | + plt->output_offset | |
9d8504b1 | 9546 | + ent->plt.offset + 2); |
636ce3f5 | 9547 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9548 | R_PPC_ADDR16_HA); |
9549 | rela.r_addend = got_offset; | |
49c09209 | 9550 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
9551 | loc += sizeof (Elf32_External_Rela); |
9552 | ||
9553 | /* Provide the @l relocation for the second instruction. */ | |
2d7ad24e AM |
9554 | rela.r_offset = (plt->output_section->vma |
9555 | + plt->output_offset | |
9d8504b1 | 9556 | + ent->plt.offset + 6); |
636ce3f5 | 9557 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9558 | R_PPC_ADDR16_LO); |
9559 | rela.r_addend = got_offset; | |
49c09209 | 9560 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
9561 | loc += sizeof (Elf32_External_Rela); |
9562 | ||
9563 | /* Provide a relocation for the GOT entry corresponding to this | |
9564 | PLT slot. Point it at the middle of the .plt entry. */ | |
ce558b89 AM |
9565 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
9566 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 9567 | + got_offset); |
7325306f | 9568 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
9569 | R_PPC_ADDR32); |
9570 | rela.r_addend = ent->plt.offset + 16; | |
49c09209 | 9571 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
9572 | } |
9573 | ||
9574 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
9575 | In particular, the offset for the relocation is not the | |
9576 | address of the PLT entry for this function, as specified | |
9577 | by the ABI. Instead, the offset is set to the address of | |
9578 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
ce558b89 AM |
9579 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
9580 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 9581 | + got_offset); |
2d7ad24e | 9582 | rela.r_addend = 0; |
a6aa5195 AM |
9583 | } |
9584 | else | |
9585 | { | |
2d7ad24e | 9586 | rela.r_addend = 0; |
25f23106 AM |
9587 | if (!htab->elf.dynamic_sections_created |
9588 | || h->dynindx == -1) | |
2d7ad24e AM |
9589 | { |
9590 | if (h->type == STT_GNU_IFUNC) | |
9591 | { | |
9592 | plt = htab->elf.iplt; | |
9593 | relplt = htab->elf.irelplt; | |
9594 | } | |
9595 | else | |
9596 | { | |
9597 | plt = htab->pltlocal; | |
9598 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9599 | } | |
9600 | if (h->def_regular | |
9601 | && (h->root.type == bfd_link_hash_defined | |
9602 | || h->root.type == bfd_link_hash_defweak)) | |
9603 | rela.r_addend = SYM_VAL (h); | |
9604 | } | |
e054468f | 9605 | |
2d7ad24e | 9606 | if (relplt == NULL) |
9d8504b1 | 9607 | { |
2d7ad24e AM |
9608 | loc = plt->contents + ent->plt.offset; |
9609 | bfd_put_32 (info->output_bfd, rela.r_addend, loc); | |
9d8504b1 PB |
9610 | } |
9611 | else | |
9612 | { | |
2d7ad24e AM |
9613 | rela.r_offset = (plt->output_section->vma |
9614 | + plt->output_offset | |
9615 | + ent->plt.offset); | |
9616 | ||
9617 | if (htab->plt_type == PLT_OLD | |
9618 | || !htab->elf.dynamic_sections_created | |
9619 | || h->dynindx == -1) | |
9620 | { | |
9621 | /* We don't need to fill in the .plt. The ppc dynamic | |
9622 | linker will fill it in. */ | |
9623 | } | |
9624 | else | |
9625 | { | |
9626 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
9627 | + htab->glink->output_section->vma | |
9628 | + htab->glink->output_offset); | |
9629 | bfd_put_32 (info->output_bfd, val, | |
9630 | plt->contents + ent->plt.offset); | |
9631 | } | |
9d8504b1 | 9632 | } |
a6aa5195 | 9633 | } |
e1a9cb8e | 9634 | |
2d7ad24e | 9635 | if (relplt != NULL) |
e054468f | 9636 | { |
2d7ad24e AM |
9637 | /* Fill in the entry in the .rela.plt section. */ |
9638 | if (!htab->elf.dynamic_sections_created | |
9639 | || h->dynindx == -1) | |
9640 | { | |
9641 | if (h->type == STT_GNU_IFUNC) | |
9642 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9643 | else | |
9644 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
9645 | loc = relplt->contents + (relplt->reloc_count++ | |
9646 | * sizeof (Elf32_External_Rela)); | |
9647 | htab->local_ifunc_resolver = 1; | |
9648 | } | |
9649 | else | |
9650 | { | |
9651 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
9652 | loc = relplt->contents + (reloc_index | |
9653 | * sizeof (Elf32_External_Rela)); | |
9654 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
9655 | htab->maybe_local_ifunc_resolver = 1; | |
9656 | } | |
9657 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); | |
82e66161 | 9658 | } |
a6aa5195 AM |
9659 | doneone = TRUE; |
9660 | } | |
e1a9cb8e | 9661 | |
e054468f | 9662 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9663 | || !htab->elf.dynamic_sections_created |
9664 | || h->dynindx == -1) | |
a6aa5195 | 9665 | { |
a7f2871e | 9666 | unsigned char *p; |
49c09209 | 9667 | asection *plt = htab->elf.splt; |
9e390558 | 9668 | |
25f23106 AM |
9669 | if (!htab->elf.dynamic_sections_created |
9670 | || h->dynindx == -1) | |
2d7ad24e AM |
9671 | { |
9672 | if (h->type == STT_GNU_IFUNC) | |
9673 | plt = htab->elf.iplt; | |
9674 | else | |
9675 | break; | |
9676 | } | |
e1a9cb8e | 9677 | |
a7f2871e | 9678 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
49c09209 | 9679 | write_glink_stub (h, ent, plt, p, info); |
e1a9cb8e | 9680 | |
0e1862bb | 9681 | if (!bfd_link_pic (info)) |
e054468f AM |
9682 | /* We only need one non-PIC glink stub. */ |
9683 | break; | |
a6aa5195 AM |
9684 | } |
9685 | else | |
9686 | break; | |
9687 | } | |
49c09209 AM |
9688 | return TRUE; |
9689 | } | |
9690 | ||
9691 | /* Finish up PLT handling. */ | |
9692 | ||
9693 | bfd_boolean | |
9694 | ppc_finish_symbols (struct bfd_link_info *info) | |
9695 | { | |
9696 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
9697 | bfd *ibfd; | |
9698 | ||
9699 | if (!htab) | |
9700 | return TRUE; | |
9701 | ||
9702 | elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info); | |
9703 | ||
9704 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
9705 | { | |
9706 | bfd_vma *local_got, *end_local_got; | |
9707 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
9708 | Elf_Internal_Shdr *symtab_hdr; | |
9709 | bfd_size_type locsymcount; | |
9710 | Elf_Internal_Sym *local_syms = NULL; | |
9711 | struct plt_entry *ent; | |
9712 | ||
9713 | if (!is_ppc_elf (ibfd)) | |
9714 | continue; | |
9715 | ||
9716 | local_got = elf_local_got_offsets (ibfd); | |
9717 | if (!local_got) | |
9718 | continue; | |
9719 | ||
9720 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9721 | locsymcount = symtab_hdr->sh_info; | |
9722 | end_local_got = local_got + locsymcount; | |
9723 | local_plt = (struct plt_entry **) end_local_got; | |
9724 | end_local_plt = local_plt + locsymcount; | |
9725 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
9726 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
9727 | { | |
9728 | if (ent->plt.offset != (bfd_vma) -1) | |
9729 | { | |
9730 | Elf_Internal_Sym *sym; | |
9731 | asection *sym_sec; | |
9732 | asection *plt, *relplt; | |
9733 | bfd_byte *loc; | |
9734 | bfd_vma val; | |
9735 | Elf_Internal_Rela rela; | |
8cd1fe1b | 9736 | unsigned char *p; |
49c09209 AM |
9737 | |
9738 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
9739 | lplt - local_plt, ibfd)) | |
9740 | { | |
9741 | if (local_syms != NULL | |
9742 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9743 | free (local_syms); | |
9744 | return FALSE; | |
9745 | } | |
9746 | ||
9747 | val = sym->st_value; | |
9748 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
9749 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
9750 | ||
2d7ad24e AM |
9751 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
9752 | { | |
9753 | htab->local_ifunc_resolver = 1; | |
9754 | plt = htab->elf.iplt; | |
9755 | relplt = htab->elf.irelplt; | |
9756 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9757 | } | |
9758 | else | |
9759 | { | |
9760 | plt = htab->pltlocal; | |
9761 | if (bfd_link_pic (info)) | |
9762 | { | |
9763 | relplt = htab->relpltlocal; | |
9764 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
9765 | } | |
9766 | else | |
9767 | { | |
9768 | loc = plt->contents + ent->plt.offset; | |
9769 | bfd_put_32 (info->output_bfd, val, loc); | |
9770 | continue; | |
9771 | } | |
9772 | } | |
49c09209 AM |
9773 | |
9774 | rela.r_offset = (ent->plt.offset | |
9775 | + plt->output_offset | |
9776 | + plt->output_section->vma); | |
49c09209 AM |
9777 | rela.r_addend = val; |
9778 | loc = relplt->contents + (relplt->reloc_count++ | |
9779 | * sizeof (Elf32_External_Rela)); | |
9780 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); | |
49c09209 | 9781 | |
8cd1fe1b | 9782 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
49c09209 | 9783 | write_glink_stub (NULL, ent, htab->elf.iplt, p, info); |
49c09209 AM |
9784 | } |
9785 | } | |
9786 | ||
9787 | if (local_syms != NULL | |
9788 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9789 | { | |
9790 | if (!info->keep_memory) | |
9791 | free (local_syms); | |
9792 | else | |
9793 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9794 | } | |
9795 | } | |
9796 | return TRUE; | |
9797 | } | |
9798 | ||
9799 | /* Finish up dynamic symbol handling. We set the contents of various | |
9800 | dynamic sections here. */ | |
9801 | ||
9802 | static bfd_boolean | |
9803 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, | |
9804 | struct bfd_link_info *info, | |
9805 | struct elf_link_hash_entry *h, | |
9806 | Elf_Internal_Sym *sym) | |
9807 | { | |
9808 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
9809 | struct plt_entry *ent; | |
9810 | ||
9811 | #ifdef DEBUG | |
9812 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9813 | h->root.root.string); | |
9814 | #endif | |
9815 | ||
9816 | if (!h->def_regular | |
9817 | || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info))) | |
9818 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9819 | if (ent->plt.offset != (bfd_vma) -1) | |
9820 | { | |
9821 | if (!h->def_regular) | |
9822 | { | |
9823 | /* Mark the symbol as undefined, rather than as | |
9824 | defined in the .plt section. Leave the value if | |
9825 | there were any relocations where pointer equality | |
9826 | matters (this is a clue for the dynamic linker, to | |
9827 | make function pointer comparisons work between an | |
9828 | application and shared library), otherwise set it | |
9829 | to zero. */ | |
9830 | sym->st_shndx = SHN_UNDEF; | |
9831 | if (!h->pointer_equality_needed) | |
9832 | sym->st_value = 0; | |
9833 | else if (!h->ref_regular_nonweak) | |
9834 | { | |
9835 | /* This breaks function pointer comparisons, but | |
9836 | that is better than breaking tests for a NULL | |
9837 | function pointer. */ | |
9838 | sym->st_value = 0; | |
9839 | } | |
9840 | } | |
9841 | else | |
9842 | { | |
9843 | /* Set the value of ifunc symbols in a non-pie | |
9844 | executable to the glink entry. This is to avoid | |
9845 | text relocations. We can't do this for ifunc in | |
9846 | allocate_dynrelocs, as we do for normal dynamic | |
9847 | function symbols with plt entries, because we need | |
9848 | to keep the original value around for the ifunc | |
9849 | relocation. */ | |
9850 | sym->st_shndx | |
9851 | = (_bfd_elf_section_from_bfd_section | |
9852 | (info->output_bfd, htab->glink->output_section)); | |
9853 | sym->st_value = (ent->glink_offset | |
9854 | + htab->glink->output_offset | |
9855 | + htab->glink->output_section->vma); | |
9856 | } | |
9857 | break; | |
9858 | } | |
e1a9cb8e | 9859 | |
25dbc73a AM |
9860 | if (h->needs_copy) |
9861 | { | |
9862 | asection *s; | |
9863 | Elf_Internal_Rela rela; | |
9864 | bfd_byte *loc; | |
e1a9cb8e | 9865 | |
25dbc73a | 9866 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 9867 | |
25dbc73a AM |
9868 | #ifdef DEBUG |
9869 | fprintf (stderr, ", copy"); | |
9870 | #endif | |
e1a9cb8e | 9871 | |
25dbc73a | 9872 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 9873 | |
4dc4a9a5 | 9874 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 9875 | s = htab->relsbss; |
afbf7e8e | 9876 | else if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f | 9877 | s = htab->elf.sreldynrelro; |
25dbc73a | 9878 | else |
9d19e4fd | 9879 | s = htab->elf.srelbss; |
25dbc73a | 9880 | BFD_ASSERT (s != NULL); |
e1a9cb8e | 9881 | |
e87d4038 | 9882 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
9883 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
9884 | rela.r_addend = 0; | |
9885 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
9886 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9887 | } | |
e1a9cb8e | 9888 | |
25dbc73a AM |
9889 | #ifdef DEBUG |
9890 | fprintf (stderr, "\n"); | |
9891 | #endif | |
e1a9cb8e | 9892 | |
25dbc73a AM |
9893 | return TRUE; |
9894 | } | |
9895 | \f | |
9896 | static enum elf_reloc_type_class | |
7e612e98 AM |
9897 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
9898 | const asection *rel_sec, | |
9899 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 9900 | { |
7e612e98 AM |
9901 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
9902 | ||
ce558b89 | 9903 | if (rel_sec == htab->elf.irelplt) |
7e612e98 AM |
9904 | return reloc_class_ifunc; |
9905 | ||
25dbc73a AM |
9906 | switch (ELF32_R_TYPE (rela->r_info)) |
9907 | { | |
9908 | case R_PPC_RELATIVE: | |
9909 | return reloc_class_relative; | |
25dbc73a AM |
9910 | case R_PPC_JMP_SLOT: |
9911 | return reloc_class_plt; | |
9912 | case R_PPC_COPY: | |
9913 | return reloc_class_copy; | |
9914 | default: | |
9915 | return reloc_class_normal; | |
9916 | } | |
e1a9cb8e | 9917 | } |
25dbc73a AM |
9918 | \f |
9919 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 9920 | |
25dbc73a AM |
9921 | static bfd_boolean |
9922 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
9923 | struct bfd_link_info *info) | |
e1a9cb8e | 9924 | { |
25dbc73a AM |
9925 | asection *sdyn; |
9926 | struct ppc_elf_link_hash_table *htab; | |
1fe44d79 | 9927 | bfd_vma got; |
e87d4038 AM |
9928 | bfd *dynobj; |
9929 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 9930 | |
25dbc73a AM |
9931 | #ifdef DEBUG |
9932 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
9933 | #endif | |
6b0817e5 | 9934 | |
25dbc73a | 9935 | htab = ppc_elf_hash_table (info); |
ce558b89 | 9936 | dynobj = htab->elf.dynobj; |
3d4d4302 | 9937 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
e1a9cb8e | 9938 | |
1fe44d79 AM |
9939 | got = 0; |
9940 | if (htab->elf.hgot != NULL) | |
e87d4038 | 9941 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 9942 | |
25dbc73a | 9943 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 9944 | { |
25dbc73a | 9945 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 9946 | |
ce558b89 | 9947 | BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL); |
86bbe32f | 9948 | |
25dbc73a AM |
9949 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
9950 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
9951 | for (; dyncon < dynconend; dyncon++) | |
9952 | { | |
9953 | Elf_Internal_Dyn dyn; | |
9954 | asection *s; | |
e1a9cb8e | 9955 | |
9d8504b1 | 9956 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 9957 | |
25dbc73a AM |
9958 | switch (dyn.d_tag) |
9959 | { | |
9960 | case DT_PLTGOT: | |
9d8504b1 | 9961 | if (htab->is_vxworks) |
ce558b89 | 9962 | s = htab->elf.sgotplt; |
9d8504b1 | 9963 | else |
ce558b89 | 9964 | s = htab->elf.splt; |
25dbc73a AM |
9965 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
9966 | break; | |
86bbe32f | 9967 | |
25dbc73a | 9968 | case DT_PLTRELSZ: |
ce558b89 | 9969 | dyn.d_un.d_val = htab->elf.srelplt->size; |
25dbc73a | 9970 | break; |
e1a9cb8e | 9971 | |
25dbc73a | 9972 | case DT_JMPREL: |
ce558b89 | 9973 | s = htab->elf.srelplt; |
25dbc73a AM |
9974 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
9975 | break; | |
2f89ff8d | 9976 | |
1fe44d79 AM |
9977 | case DT_PPC_GOT: |
9978 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
9979 | break; |
9980 | ||
82e66161 AM |
9981 | case DT_TEXTREL: |
9982 | if (htab->local_ifunc_resolver) | |
9983 | info->callbacks->einfo | |
9984 | (_("%X%P: text relocations and GNU indirect " | |
9985 | "functions will result in a segfault at runtime\n")); | |
9986 | else if (htab->maybe_local_ifunc_resolver) | |
9987 | info->callbacks->einfo | |
9988 | (_("%P: warning: text relocations and GNU indirect " | |
9989 | "functions may result in a segfault at runtime\n")); | |
9990 | continue; | |
9991 | ||
25dbc73a | 9992 | default: |
7a2b07ff NS |
9993 | if (htab->is_vxworks |
9994 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
9995 | break; | |
25dbc73a AM |
9996 | continue; |
9997 | } | |
4c45e5c9 | 9998 | |
25dbc73a AM |
9999 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
10000 | } | |
10001 | } | |
4c45e5c9 | 10002 | |
6528b6eb AM |
10003 | if (htab->elf.sgot != NULL |
10004 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
25dbc73a | 10005 | { |
ce558b89 AM |
10006 | if (htab->elf.hgot->root.u.def.section == htab->elf.sgot |
10007 | || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt) | |
e87d4038 | 10008 | { |
e79f5955 | 10009 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 10010 | |
e87d4038 AM |
10011 | p += htab->elf.hgot->root.u.def.value; |
10012 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
10013 | { |
10014 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
10015 | so that a function can easily find the address of | |
10016 | _GLOBAL_OFFSET_TABLE_. */ | |
10017 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
10018 | < htab->elf.hgot->root.u.def.section->size); | |
10019 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
10020 | } | |
3b36f7e6 | 10021 | |
e87d4038 | 10022 | if (sdyn != NULL) |
e79f5955 AM |
10023 | { |
10024 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
10025 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
10026 | < htab->elf.hgot->root.u.def.section->size); | |
10027 | bfd_put_32 (output_bfd, val, p); | |
10028 | } | |
e87d4038 AM |
10029 | } |
10030 | else | |
10031 | { | |
695344c0 | 10032 | /* xgettext:c-format */ |
cf97bcb0 AM |
10033 | _bfd_error_handler (_("%s not defined in linker created %pA"), |
10034 | htab->elf.hgot->root.root.string, | |
10035 | (htab->elf.sgotplt != NULL | |
10036 | ? htab->elf.sgotplt : htab->elf.sgot)); | |
e87d4038 AM |
10037 | bfd_set_error (bfd_error_bad_value); |
10038 | ret = FALSE; | |
10039 | } | |
25dbc73a | 10040 | |
ce558b89 | 10041 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; |
25dbc73a AM |
10042 | } |
10043 | ||
9d8504b1 | 10044 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
6528b6eb AM |
10045 | if (htab->is_vxworks |
10046 | && htab->elf.splt != NULL | |
10047 | && htab->elf.splt->size != 0 | |
10048 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
9d8504b1 | 10049 | { |
6528b6eb | 10050 | asection *splt = htab->elf.splt; |
9d8504b1 | 10051 | /* Use the right PLT. */ |
0e1862bb | 10052 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
10053 | ? ppc_elf_vxworks_pic_plt0_entry |
10054 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 10055 | |
0e1862bb | 10056 | if (!bfd_link_pic (info)) |
9d8504b1 | 10057 | { |
e87d4038 | 10058 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10059 | |
e87d4038 | 10060 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10061 | splt->contents + 0); |
e87d4038 | 10062 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10063 | splt->contents + 4); |
10064 | } | |
10065 | else | |
10066 | { | |
10067 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10068 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10069 | } | |
10070 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10071 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10072 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10073 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10074 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10075 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10076 | ||
0e1862bb | 10077 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
10078 | { |
10079 | Elf_Internal_Rela rela; | |
10080 | bfd_byte *loc; | |
10081 | ||
10082 | loc = htab->srelplt2->contents; | |
10083 | ||
10084 | /* Output the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10085 | rela.r_offset = (htab->elf.splt->output_section->vma |
10086 | + htab->elf.splt->output_offset | |
9d8504b1 | 10087 | + 2); |
636ce3f5 | 10088 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10089 | rela.r_addend = 0; |
10090 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10091 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10092 | |
9d8504b1 | 10093 | /* Output the @l relocation for the second instruction. */ |
ce558b89 AM |
10094 | rela.r_offset = (htab->elf.splt->output_section->vma |
10095 | + htab->elf.splt->output_offset | |
9d8504b1 | 10096 | + 6); |
636ce3f5 | 10097 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10098 | rela.r_addend = 0; |
10099 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10100 | loc += sizeof (Elf32_External_Rela); | |
10101 | ||
10102 | /* Fix up the remaining relocations. They may have the wrong | |
10103 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10104 | in which symbols were output. */ | |
10105 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10106 | { | |
10107 | Elf_Internal_Rela rel; | |
10108 | ||
10109 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10110 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10111 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10112 | loc += sizeof (Elf32_External_Rela); | |
10113 | ||
10114 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10115 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10116 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10117 | loc += sizeof (Elf32_External_Rela); | |
10118 | ||
10119 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10120 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10121 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10122 | loc += sizeof (Elf32_External_Rela); | |
10123 | } | |
10124 | } | |
10125 | } | |
10126 | ||
e054468f AM |
10127 | if (htab->glink != NULL |
10128 | && htab->glink->contents != NULL | |
10129 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10130 | { |
10131 | unsigned char *p; | |
10132 | unsigned char *endp; | |
a6aa5195 | 10133 | bfd_vma res0; |
a6aa5195 AM |
10134 | |
10135 | /* | |
10136 | * PIC glink code is the following: | |
10137 | * | |
10138 | * # ith PLT code stub. | |
10139 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10140 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10141 | * mtctr 11 | |
10142 | * bctr | |
10143 | * | |
10144 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10145 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10146 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10147 | * res_0: b PLTresolve | |
10148 | * res_1: b PLTresolve | |
10149 | * . | |
10150 | * # Some number of entries towards the end can be nops | |
10151 | * res_n_m3: nop | |
10152 | * res_n_m2: nop | |
10153 | * res_n_m1: | |
10154 | * | |
10155 | * PLTresolve: | |
10156 | * addis 11,11,(1f-res_0)@ha | |
10157 | * mflr 0 | |
10158 | * bcl 20,31,1f | |
10159 | * 1: addi 11,11,(1b-res_0)@l | |
10160 | * mflr 12 | |
10161 | * mtlr 0 | |
07d6d2b8 | 10162 | * sub 11,11,12 # r11 = index * 4 |
a6aa5195 | 10163 | * addis 12,12,(got+4-1b)@ha |
07d6d2b8 AM |
10164 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve |
10165 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
a6aa5195 AM |
10166 | * mtctr 0 |
10167 | * add 0,11,11 | |
07d6d2b8 | 10168 | * add 11,0,11 # r11 = index * 12 = reloc offset. |
a6aa5195 | 10169 | * bctr |
9e390558 | 10170 | * |
176a0d42 AM |
10171 | * Non-PIC glink code is a little simpler. |
10172 | * | |
10173 | * # ith PLT code stub. | |
10174 | * lis 11,(plt+(i-1)*4)@ha | |
10175 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10176 | * mtctr 11 | |
10177 | * bctr | |
10178 | * | |
10179 | * The branch table is the same, then comes | |
10180 | * | |
10181 | * PLTresolve: | |
10182 | * lis 12,(got+4)@ha | |
10183 | * addis 11,11,(-res_0)@ha | |
07d6d2b8 AM |
10184 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve |
10185 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
176a0d42 AM |
10186 | * mtctr 0 |
10187 | * add 0,11,11 | |
07d6d2b8 AM |
10188 | * lwz 12,(got+8)@l(12) # got[2] contains the map address |
10189 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
176a0d42 AM |
10190 | * bctr |
10191 | */ | |
7e8aeb9a | 10192 | |
a6aa5195 | 10193 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10194 | and perhaps some padding. */ |
a6aa5195 AM |
10195 | p = htab->glink->contents; |
10196 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10197 | endp = htab->glink->contents; |
10198 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10199 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10200 | { |
10201 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10202 | p += 4; | |
10203 | } | |
10204 | while (p < endp) | |
10205 | { | |
10206 | bfd_put_32 (output_bfd, NOP, p); | |
10207 | p += 4; | |
10208 | } | |
10209 | ||
7e8aeb9a | 10210 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10211 | + htab->glink->output_section->vma |
10212 | + htab->glink->output_offset); | |
10213 | ||
da3a2088 AM |
10214 | if (htab->params->ppc476_workaround) |
10215 | { | |
10216 | /* Ensure that a call stub at the end of a page doesn't | |
10217 | result in prefetch over the end of the page into the | |
10218 | glink branch table. */ | |
10219 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10220 | bfd_vma page_addr; | |
10221 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10222 | + htab->glink->output_offset); | |
10223 | ||
10224 | for (page_addr = res0 & -pagesize; | |
10225 | page_addr > glink_start; | |
10226 | page_addr -= pagesize) | |
10227 | { | |
10228 | /* We have a plt call stub that may need fixing. */ | |
10229 | bfd_byte *loc; | |
10230 | unsigned int insn; | |
10231 | ||
10232 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10233 | insn = bfd_get_32 (output_bfd, loc); | |
10234 | if (insn == BCTR) | |
10235 | { | |
10236 | /* By alignment, we know that there must be at least | |
10237 | one other call stub before this one. */ | |
10238 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10239 | if (insn == BCTR) | |
10240 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10241 | else | |
10242 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10243 | } | |
10244 | } | |
10245 | } | |
10246 | ||
86b9da88 | 10247 | /* Last comes the PLTresolve stub. */ |
9e390558 | 10248 | endp = p + GLINK_PLTRESOLVE; |
0e1862bb | 10249 | if (bfd_link_pic (info)) |
7e8aeb9a | 10250 | { |
a6aa5195 | 10251 | bfd_vma bcl; |
d7128ce4 | 10252 | |
a6aa5195 AM |
10253 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 |
10254 | + htab->glink->output_section->vma | |
10255 | + htab->glink->output_offset); | |
10256 | ||
9e390558 AM |
10257 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p); |
10258 | p += 4; | |
10259 | bfd_put_32 (output_bfd, MFLR_0, p); | |
10260 | p += 4; | |
10261 | bfd_put_32 (output_bfd, BCL_20_31, p); | |
10262 | p += 4; | |
10263 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p); | |
10264 | p += 4; | |
10265 | bfd_put_32 (output_bfd, MFLR_12, p); | |
10266 | p += 4; | |
10267 | bfd_put_32 (output_bfd, MTLR_0, p); | |
10268 | p += 4; | |
10269 | bfd_put_32 (output_bfd, SUB_11_11_12, p); | |
10270 | p += 4; | |
10271 | bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p); | |
10272 | p += 4; | |
a6aa5195 AM |
10273 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) |
10274 | { | |
9e390558 AM |
10275 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p); |
10276 | p += 4; | |
10277 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p); | |
10278 | p += 4; | |
a6aa5195 AM |
10279 | } |
10280 | else | |
10281 | { | |
9e390558 AM |
10282 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p); |
10283 | p += 4; | |
10284 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10285 | p += 4; | |
a6aa5195 | 10286 | } |
9e390558 AM |
10287 | bfd_put_32 (output_bfd, MTCTR_0, p); |
10288 | p += 4; | |
10289 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
7e8aeb9a AM |
10290 | } |
10291 | else | |
d7128ce4 | 10292 | { |
9e390558 AM |
10293 | bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p); |
10294 | p += 4; | |
10295 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p); | |
10296 | p += 4; | |
a6aa5195 | 10297 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) |
9e390558 | 10298 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p); |
a6aa5195 | 10299 | else |
9e390558 AM |
10300 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p); |
10301 | p += 4; | |
10302 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p); | |
10303 | p += 4; | |
10304 | bfd_put_32 (output_bfd, MTCTR_0, p); | |
10305 | p += 4; | |
10306 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
10307 | p += 4; | |
10308 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10309 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p); | |
10310 | else | |
10311 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10312 | } | |
10313 | p += 4; | |
10314 | bfd_put_32 (output_bfd, ADD_11_0_11, p); | |
10315 | p += 4; | |
407aa07c AM |
10316 | bfd_put_32 (output_bfd, BCTR, p); |
10317 | p += 4; | |
9e390558 AM |
10318 | while (p < endp) |
10319 | { | |
10320 | bfd_put_32 (output_bfd, | |
10321 | htab->params->ppc476_workaround ? BA : NOP, p); | |
10322 | p += 4; | |
d7128ce4 | 10323 | } |
9e390558 | 10324 | BFD_ASSERT (p == endp); |
d7128ce4 AM |
10325 | } |
10326 | ||
6177242a AM |
10327 | if (htab->glink_eh_frame != NULL |
10328 | && htab->glink_eh_frame->contents != NULL) | |
10329 | { | |
10330 | unsigned char *p = htab->glink_eh_frame->contents; | |
10331 | bfd_vma val; | |
10332 | ||
6177242a AM |
10333 | p += sizeof (glink_eh_frame_cie); |
10334 | /* FDE length. */ | |
6177242a AM |
10335 | p += 4; |
10336 | /* CIE pointer. */ | |
6177242a AM |
10337 | p += 4; |
10338 | /* Offset to .glink. */ | |
10339 | val = (htab->glink->output_section->vma | |
10340 | + htab->glink->output_offset); | |
10341 | val -= (htab->glink_eh_frame->output_section->vma | |
10342 | + htab->glink_eh_frame->output_offset); | |
10343 | val -= p - htab->glink_eh_frame->contents; | |
10344 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10345 | |
dbaa2011 | 10346 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10347 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10348 | htab->glink_eh_frame, | |
10349 | htab->glink_eh_frame->contents)) | |
10350 | return FALSE; | |
10351 | } | |
10352 | ||
e87d4038 | 10353 | return ret; |
25dbc73a | 10354 | } |
e1a9cb8e | 10355 | \f |
6d00b590 | 10356 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10357 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10358 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10359 | #define TARGET_BIG_NAME "elf32-powerpc" |
10360 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10361 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 RH |
10362 | #define ELF_MACHINE_CODE EM_PPC |
10363 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
10364 | #define ELF_COMMONPAGESIZE 0x1000 |
10365 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
252b5132 RH |
10366 | #define elf_info_to_howto ppc_elf_info_to_howto |
10367 | ||
10368 | #ifdef EM_CYGNUS_POWERPC | |
10369 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10370 | #endif | |
10371 | ||
10372 | #ifdef EM_PPC_OLD | |
10373 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10374 | #endif | |
10375 | ||
10376 | #define elf_backend_plt_not_loaded 1 | |
5474d94f | 10377 | #define elf_backend_want_dynrelro 1 |
252b5132 | 10378 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10379 | #define elf_backend_can_refcount 1 |
b491616a | 10380 | #define elf_backend_rela_normal 1 |
53291d1f | 10381 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10382 | |
43c40ab2 | 10383 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10384 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10385 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10386 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10387 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10388 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10389 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10390 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10391 | |
feee612b | 10392 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 | 10393 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
252b5132 RH |
10394 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
10395 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10396 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10397 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
c0e331c7 | 10398 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
7fce784e | 10399 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10400 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10401 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10402 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10403 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10404 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10405 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10406 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10407 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
954b63d4 | 10408 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10409 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10410 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10411 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10412 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10413 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10414 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10415 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10416 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10417 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10418 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10419 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10420 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
252b5132 RH |
10421 | |
10422 | #include "elf32-target.h" | |
9d8504b1 | 10423 | |
7b8e7dad AM |
10424 | /* FreeBSD Target */ |
10425 | ||
10426 | #undef TARGET_LITTLE_SYM | |
10427 | #undef TARGET_LITTLE_NAME | |
10428 | ||
10429 | #undef TARGET_BIG_SYM | |
6d00b590 | 10430 | #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec |
7b8e7dad AM |
10431 | #undef TARGET_BIG_NAME |
10432 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10433 | ||
10434 | #undef ELF_OSABI | |
10435 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10436 | ||
10437 | #undef elf32_bed | |
10438 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10439 | ||
10440 | #include "elf32-target.h" | |
10441 | ||
9d8504b1 PB |
10442 | /* VxWorks Target */ |
10443 | ||
10444 | #undef TARGET_LITTLE_SYM | |
10445 | #undef TARGET_LITTLE_NAME | |
10446 | ||
10447 | #undef TARGET_BIG_SYM | |
6d00b590 | 10448 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10449 | #undef TARGET_BIG_NAME |
10450 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10451 | ||
7b8e7dad AM |
10452 | #undef ELF_OSABI |
10453 | ||
d5e3d971 PB |
10454 | /* VxWorks uses the elf default section flags for .plt. */ |
10455 | static const struct bfd_elf_special_section * | |
4aef7643 | 10456 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec) |
9d8504b1 | 10457 | { |
d5e3d971 PB |
10458 | if (sec->name == NULL) |
10459 | return NULL; | |
10460 | ||
10461 | if (strcmp (sec->name, ".plt") == 0) | |
10462 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10463 | ||
10464 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10465 | } | |
9d8504b1 PB |
10466 | |
10467 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10468 | appropriately for VxWorks. */ | |
10469 | static struct bfd_link_hash_table * | |
10470 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10471 | { | |
10472 | struct bfd_link_hash_table *ret; | |
10473 | ||
10474 | ret = ppc_elf_link_hash_table_create (abfd); | |
10475 | if (ret) | |
10476 | { | |
10477 | struct ppc_elf_link_hash_table *htab | |
954b63d4 | 10478 | = (struct ppc_elf_link_hash_table *)ret; |
9d8504b1 | 10479 | htab->is_vxworks = 1; |
4a3dc543 | 10480 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10481 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10482 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10483 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10484 | } | |
10485 | return ret; | |
10486 | } | |
10487 | ||
10488 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10489 | static bfd_boolean | |
10490 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10491 | struct bfd_link_info *info, | |
10492 | Elf_Internal_Sym *sym, | |
4aef7643 AM |
10493 | const char **namep, |
10494 | flagword *flagsp, | |
9d8504b1 PB |
10495 | asection **secp, |
10496 | bfd_vma *valp) | |
10497 | { | |
4aef7643 AM |
10498 | if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, |
10499 | valp)) | |
9d8504b1 PB |
10500 | return FALSE; |
10501 | ||
4aef7643 | 10502 | return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp); |
9d8504b1 PB |
10503 | } |
10504 | ||
cc364be6 AM |
10505 | static bfd_boolean |
10506 | ppc_elf_vxworks_final_write_processing (bfd *abfd) | |
9d8504b1 | 10507 | { |
cc364be6 AM |
10508 | ppc_final_write_processing (abfd); |
10509 | return elf_vxworks_final_write_processing (abfd); | |
9d8504b1 PB |
10510 | } |
10511 | ||
10512 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10513 | define it. */ | |
10514 | #undef elf_backend_want_plt_sym | |
10515 | #define elf_backend_want_plt_sym 1 | |
10516 | #undef elf_backend_want_got_plt | |
10517 | #define elf_backend_want_got_plt 1 | |
10518 | #undef elf_backend_got_symbol_offset | |
10519 | #define elf_backend_got_symbol_offset 0 | |
10520 | #undef elf_backend_plt_not_loaded | |
10521 | #define elf_backend_plt_not_loaded 0 | |
10522 | #undef elf_backend_plt_readonly | |
10523 | #define elf_backend_plt_readonly 1 | |
10524 | #undef elf_backend_got_header_size | |
10525 | #define elf_backend_got_header_size 12 | |
64f52338 AM |
10526 | #undef elf_backend_dtrel_excludes_plt |
10527 | #define elf_backend_dtrel_excludes_plt 1 | |
9d8504b1 | 10528 | |
468392fb AM |
10529 | #undef bfd_elf32_get_synthetic_symtab |
10530 | ||
9d8504b1 PB |
10531 | #undef bfd_elf32_bfd_link_hash_table_create |
10532 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10533 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10534 | #undef elf_backend_add_symbol_hook |
10535 | #define elf_backend_add_symbol_hook \ | |
10536 | ppc_elf_vxworks_add_symbol_hook | |
10537 | #undef elf_backend_link_output_symbol_hook | |
10538 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10539 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10540 | #undef elf_backend_final_write_processing |
10541 | #define elf_backend_final_write_processing \ | |
10542 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10543 | #undef elf_backend_get_sec_type_attr |
10544 | #define elf_backend_get_sec_type_attr \ | |
10545 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10546 | #undef elf_backend_emit_relocs |
10547 | #define elf_backend_emit_relocs \ | |
10548 | elf_vxworks_emit_relocs | |
10549 | ||
10550 | #undef elf32_bed | |
10551 | #define elf32_bed ppc_elf_vxworks_bed | |
e054468f | 10552 | #undef elf_backend_post_process_headers |
9d8504b1 PB |
10553 | |
10554 | #include "elf32-target.h" |