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252b5132 | 1 | /* PowerPC-specific support for 32-bit ELF |
b3adc24a | 2 | Copyright (C) 1994-2020 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 | |
bb294208 AM |
40 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
41 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
42 | ||
b9c361e0 JL |
43 | typedef enum split16_format_type |
44 | { | |
45 | split16a_type = 0, | |
46 | split16d_type | |
47 | } | |
48 | split16_format_type; | |
49 | ||
f0fe0e16 | 50 | /* RELA relocations are used here. */ |
252b5132 | 51 | |
252b5132 | 52 | static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
55fd94b0 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
7619e7c7 | 54 | static bfd_reloc_status_type ppc_elf_unhandled_reloc |
55fd94b0 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
252b5132 | 56 | |
70bccea4 AM |
57 | /* Branch prediction bit for branch taken relocs. */ |
58 | #define BRANCH_PREDICT_BIT 0x200000 | |
59 | /* Mask to set RA in memory instructions. */ | |
60 | #define RA_REGISTER_MASK 0x001f0000 | |
61 | /* Value to shift register by to insert RA. */ | |
62 | #define RA_REGISTER_SHIFT 16 | |
252b5132 RH |
63 | |
64 | /* The name of the dynamic interpreter. This is put in the .interp | |
65 | section. */ | |
252b5132 RH |
66 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
67 | ||
d7128ce4 | 68 | /* For old-style PLT. */ |
252b5132 RH |
69 | /* The number of single-slot PLT entries (the rest use two slots). */ |
70 | #define PLT_NUM_SINGLE_ENTRIES 8192 | |
71 | ||
d7128ce4 | 72 | /* For new-style .glink and .plt. */ |
a6aa5195 | 73 | #define GLINK_PLTRESOLVE 16*4 |
9e390558 | 74 | #define GLINK_ENTRY_SIZE(htab, h) \ |
407aa07c | 75 | ((4*4 \ |
9e390558 AM |
76 | + (h != NULL \ |
77 | && h == htab->tls_get_addr \ | |
78 | && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \ | |
79 | + (1u << htab->params->plt_stub_align) - 1) \ | |
80 | & -(1u << htab->params->plt_stub_align)) | |
d7128ce4 | 81 | |
9d8504b1 PB |
82 | /* VxWorks uses its own plt layout, filled in by the static linker. */ |
83 | ||
84 | /* The standard VxWorks PLT entry. */ | |
85 | #define VXWORKS_PLT_ENTRY_SIZE 32 | |
86 | static const bfd_vma ppc_elf_vxworks_plt_entry | |
87 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
88 | { | |
07d6d2b8 AM |
89 | 0x3d800000, /* lis r12,0 */ |
90 | 0x818c0000, /* lwz r12,0(r12) */ | |
91 | 0x7d8903a6, /* mtctr r12 */ | |
92 | 0x4e800420, /* bctr */ | |
93 | 0x39600000, /* li r11,0 */ | |
94 | 0x48000000, /* b 14 <.PLT0resolve+0x4> */ | |
95 | 0x60000000, /* nop */ | |
96 | 0x60000000, /* nop */ | |
9d8504b1 PB |
97 | }; |
98 | static const bfd_vma ppc_elf_vxworks_pic_plt_entry | |
99 | [VXWORKS_PLT_ENTRY_SIZE / 4] = | |
100 | { | |
101 | 0x3d9e0000, /* addis r12,r30,0 */ | |
102 | 0x818c0000, /* lwz r12,0(r12) */ | |
103 | 0x7d8903a6, /* mtctr r12 */ | |
104 | 0x4e800420, /* bctr */ | |
105 | 0x39600000, /* li r11,0 */ | |
106 | 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */ | |
107 | 0x60000000, /* nop */ | |
108 | 0x60000000, /* nop */ | |
109 | }; | |
110 | ||
111 | /* The initial VxWorks PLT entry. */ | |
112 | #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32 | |
113 | static const bfd_vma ppc_elf_vxworks_plt0_entry | |
114 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
115 | { | |
07d6d2b8 AM |
116 | 0x3d800000, /* lis r12,0 */ |
117 | 0x398c0000, /* addi r12,r12,0 */ | |
118 | 0x800c0008, /* lwz r0,8(r12) */ | |
119 | 0x7c0903a6, /* mtctr r0 */ | |
120 | 0x818c0004, /* lwz r12,4(r12) */ | |
121 | 0x4e800420, /* bctr */ | |
122 | 0x60000000, /* nop */ | |
123 | 0x60000000, /* nop */ | |
9d8504b1 PB |
124 | }; |
125 | static const bfd_vma ppc_elf_vxworks_pic_plt0_entry | |
126 | [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] = | |
127 | { | |
128 | 0x819e0008, /* lwz r12,8(r30) */ | |
07d6d2b8 | 129 | 0x7d8903a6, /* mtctr r12 */ |
9d8504b1 | 130 | 0x819e0004, /* lwz r12,4(r30) */ |
07d6d2b8 AM |
131 | 0x4e800420, /* bctr */ |
132 | 0x60000000, /* nop */ | |
133 | 0x60000000, /* nop */ | |
134 | 0x60000000, /* nop */ | |
135 | 0x60000000, /* nop */ | |
9d8504b1 PB |
136 | }; |
137 | ||
138 | /* For executables, we have some additional relocations in | |
139 | .rela.plt.unloaded, for the kernel loader. */ | |
140 | ||
141 | /* The number of non-JMP_SLOT relocations per PLT0 slot. */ | |
142 | #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3 | |
143 | /* The number of relocations in the PLTResolve slot. */ | |
144 | #define VXWORKS_PLTRESOLVE_RELOCS 2 | |
de194d85 | 145 | /* The number of relocations in the PLTResolve slot when creating |
9d8504b1 PB |
146 | a shared library. */ |
147 | #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0 | |
148 | ||
d7128ce4 | 149 | /* Some instructions. */ |
d7128ce4 | 150 | #define ADDIS_11_11 0x3d6b0000 |
a6aa5195 AM |
151 | #define ADDIS_11_30 0x3d7e0000 |
152 | #define ADDIS_12_12 0x3d8c0000 | |
d7128ce4 | 153 | #define ADDI_11_11 0x396b0000 |
d7128ce4 | 154 | #define ADD_0_11_11 0x7c0b5a14 |
a7f2871e | 155 | #define ADD_3_12_2 0x7c6c1214 |
d7128ce4 | 156 | #define ADD_11_0_11 0x7d605a14 |
a6aa5195 | 157 | #define B 0x48000000 |
da3a2088 | 158 | #define BA 0x48000002 |
a6aa5195 | 159 | #define BCL_20_31 0x429f0005 |
d7128ce4 | 160 | #define BCTR 0x4e800420 |
a7f2871e AM |
161 | #define BEQLR 0x4d820020 |
162 | #define CMPWI_11_0 0x2c0b0000 | |
7e8aeb9a AM |
163 | #define LIS_11 0x3d600000 |
164 | #define LIS_12 0x3d800000 | |
a6aa5195 AM |
165 | #define LWZU_0_12 0x840c0000 |
166 | #define LWZ_0_12 0x800c0000 | |
a7f2871e | 167 | #define LWZ_11_3 0x81630000 |
a6aa5195 AM |
168 | #define LWZ_11_11 0x816b0000 |
169 | #define LWZ_11_30 0x817e0000 | |
a7f2871e | 170 | #define LWZ_12_3 0x81830000 |
a6aa5195 | 171 | #define LWZ_12_12 0x818c0000 |
a7f2871e AM |
172 | #define MR_0_3 0x7c601b78 |
173 | #define MR_3_0 0x7c030378 | |
a6aa5195 AM |
174 | #define MFLR_0 0x7c0802a6 |
175 | #define MFLR_12 0x7d8802a6 | |
176 | #define MTCTR_0 0x7c0903a6 | |
177 | #define MTCTR_11 0x7d6903a6 | |
178 | #define MTLR_0 0x7c0803a6 | |
179 | #define NOP 0x60000000 | |
180 | #define SUB_11_11_12 0x7d6c5850 | |
7619e7c7 AM |
181 | |
182 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
183 | #define TP_OFFSET 0x7000 | |
184 | #define DTP_OFFSET 0x8000 | |
e87d4038 AM |
185 | |
186 | /* The value of a defined global symbol. */ | |
187 | #define SYM_VAL(SYM) \ | |
188 | ((SYM)->root.u.def.section->output_section->vma \ | |
189 | + (SYM)->root.u.def.section->output_offset \ | |
190 | + (SYM)->root.u.def.value) | |
7fce784e | 191 | \f |
46807bf4 AM |
192 | /* Relocation HOWTO's. */ |
193 | /* Like other ELF RELA targets that don't apply multiple | |
194 | field-altering relocations to the same localation, src_mask is | |
195 | always zero and pcrel_offset is the same as pc_relative. | |
196 | PowerPC can always use a zero bitpos, even when the field is not at | |
197 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
198 | and bitpos=2 which matches the ABI description, or as we do here, | |
199 | rightshift=0, bitsize=26 and bitpos=0. */ | |
200 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
201 | complain, special_func) \ | |
202 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
203 | complain_overflow_ ## complain, special_func, \ | |
204 | #type, FALSE, 0, mask, pc_relative) | |
205 | ||
e47cd125 | 206 | static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; |
252b5132 | 207 | |
8da6118f | 208 | static reloc_howto_type ppc_elf_howto_raw[] = { |
252b5132 | 209 | /* This reloc does nothing. */ |
46807bf4 AM |
210 | HOW (R_PPC_NONE, 3, 0, 0, 0, FALSE, dont, |
211 | bfd_elf_generic_reloc), | |
252b5132 RH |
212 | |
213 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
214 | HOW (R_PPC_ADDR32, 2, 32, 0xffffffff, 0, FALSE, dont, |
215 | bfd_elf_generic_reloc), | |
252b5132 RH |
216 | |
217 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
218 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
219 | HOW (R_PPC_ADDR24, 2, 26, 0x3fffffc, 0, FALSE, signed, |
220 | bfd_elf_generic_reloc), | |
252b5132 RH |
221 | |
222 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
223 | HOW (R_PPC_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
224 | bfd_elf_generic_reloc), | |
252b5132 RH |
225 | |
226 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
227 | HOW (R_PPC_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
228 | bfd_elf_generic_reloc), | |
252b5132 RH |
229 | |
230 | /* The high order 16 bits of an address. */ | |
46807bf4 AM |
231 | HOW (R_PPC_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
232 | bfd_elf_generic_reloc), | |
252b5132 RH |
233 | |
234 | /* The high order 16 bits of an address, plus 1 if the contents of | |
8da6118f | 235 | the low 16 bits, treated as a signed number, is negative. */ |
46807bf4 AM |
236 | HOW (R_PPC_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
237 | ppc_elf_addr16_ha_reloc), | |
252b5132 RH |
238 | |
239 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
240 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
241 | HOW (R_PPC_ADDR14, 2, 16, 0xfffc, 0, FALSE, signed, |
242 | bfd_elf_generic_reloc), | |
252b5132 RH |
243 | |
244 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
245 | indicate that the branch is expected to be taken. The lower two | |
8da6118f | 246 | bits must be zero. */ |
46807bf4 AM |
247 | HOW (R_PPC_ADDR14_BRTAKEN, 2, 16, 0xfffc, 0, FALSE, signed, |
248 | bfd_elf_generic_reloc), | |
252b5132 RH |
249 | |
250 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
251 | indicate that the branch is not expected to be taken. The lower | |
252 | two bits must be zero. */ | |
46807bf4 AM |
253 | HOW (R_PPC_ADDR14_BRNTAKEN, 2, 16, 0xfffc, 0, FALSE, signed, |
254 | bfd_elf_generic_reloc), | |
252b5132 | 255 | |
8da6118f | 256 | /* A relative 26 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
257 | HOW (R_PPC_REL24, 2, 26, 0x3fffffc, 0, TRUE, signed, |
258 | bfd_elf_generic_reloc), | |
252b5132 | 259 | |
8da6118f | 260 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
261 | HOW (R_PPC_REL14, 2, 16, 0xfffc, 0, TRUE, signed, |
262 | bfd_elf_generic_reloc), | |
252b5132 | 263 | |
8da6118f | 264 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
265 | the branch is expected to be taken. The lower two bits must be |
266 | zero. */ | |
46807bf4 AM |
267 | HOW (R_PPC_REL14_BRTAKEN, 2, 16, 0xfffc, 0, TRUE, signed, |
268 | bfd_elf_generic_reloc), | |
252b5132 | 269 | |
8da6118f | 270 | /* A relative 16 bit branch. Bit 10 should be set to indicate that |
252b5132 RH |
271 | the branch is not expected to be taken. The lower two bits must |
272 | be zero. */ | |
46807bf4 AM |
273 | HOW (R_PPC_REL14_BRNTAKEN, 2, 16, 0xfffc, 0, TRUE, signed, |
274 | bfd_elf_generic_reloc), | |
252b5132 RH |
275 | |
276 | /* Like R_PPC_ADDR16, but referring to the GOT table entry for the | |
277 | symbol. */ | |
46807bf4 AM |
278 | HOW (R_PPC_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
279 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
280 | |
281 | /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for | |
282 | the symbol. */ | |
46807bf4 AM |
283 | HOW (R_PPC_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
284 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
285 | |
286 | /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for | |
287 | the symbol. */ | |
46807bf4 AM |
288 | HOW (R_PPC_GOT16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
289 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
290 | |
291 | /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for | |
292 | the symbol. */ | |
46807bf4 AM |
293 | HOW (R_PPC_GOT16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
294 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
295 | |
296 | /* Like R_PPC_REL24, but referring to the procedure linkage table | |
297 | entry for the symbol. */ | |
46807bf4 AM |
298 | HOW (R_PPC_PLTREL24, 2, 26, 0x3fffffc, 0, TRUE, signed, |
299 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
300 | |
301 | /* This is used only by the dynamic linker. The symbol should exist | |
302 | both in the object being run and in some shared library. The | |
303 | dynamic linker copies the data addressed by the symbol from the | |
304 | shared library into the object, because the object being | |
305 | run has to have the data at some particular address. */ | |
46807bf4 AM |
306 | HOW (R_PPC_COPY, 2, 32, 0, 0, FALSE, dont, |
307 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
308 | |
309 | /* Like R_PPC_ADDR32, but used when setting global offset table | |
310 | entries. */ | |
46807bf4 AM |
311 | HOW (R_PPC_GLOB_DAT, 2, 32, 0xffffffff, 0, FALSE, dont, |
312 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
313 | |
314 | /* Marks a procedure linkage table entry for a symbol. */ | |
46807bf4 AM |
315 | HOW (R_PPC_JMP_SLOT, 2, 32, 0, 0, FALSE, dont, |
316 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
317 | |
318 | /* Used only by the dynamic linker. When the object is run, this | |
319 | longword is set to the load address of the object, plus the | |
320 | addend. */ | |
46807bf4 AM |
321 | HOW (R_PPC_RELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont, |
322 | bfd_elf_generic_reloc), | |
252b5132 RH |
323 | |
324 | /* Like R_PPC_REL24, but uses the value of the symbol within the | |
325 | object rather than the final value. Normally used for | |
326 | _GLOBAL_OFFSET_TABLE_. */ | |
46807bf4 AM |
327 | HOW (R_PPC_LOCAL24PC, 2, 26, 0x3fffffc, 0, TRUE, signed, |
328 | bfd_elf_generic_reloc), | |
252b5132 RH |
329 | |
330 | /* Like R_PPC_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
331 | HOW (R_PPC_UADDR32, 2, 32, 0xffffffff, 0, FALSE, dont, |
332 | bfd_elf_generic_reloc), | |
252b5132 RH |
333 | |
334 | /* Like R_PPC_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
335 | HOW (R_PPC_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
336 | bfd_elf_generic_reloc), | |
252b5132 RH |
337 | |
338 | /* 32-bit PC relative */ | |
46807bf4 AM |
339 | HOW (R_PPC_REL32, 2, 32, 0xffffffff, 0, TRUE, dont, |
340 | bfd_elf_generic_reloc), | |
252b5132 RH |
341 | |
342 | /* 32-bit relocation to the symbol's procedure linkage table. | |
c3668558 | 343 | FIXME: not supported. */ |
46807bf4 AM |
344 | HOW (R_PPC_PLT32, 2, 32, 0, 0, FALSE, dont, |
345 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
346 | |
347 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
c3668558 | 348 | FIXME: not supported. */ |
46807bf4 AM |
349 | HOW (R_PPC_PLTREL32, 2, 32, 0, 0, TRUE, dont, |
350 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
351 | |
352 | /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for | |
353 | the symbol. */ | |
46807bf4 AM |
354 | HOW (R_PPC_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
355 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
356 | |
357 | /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for | |
358 | the symbol. */ | |
46807bf4 AM |
359 | HOW (R_PPC_PLT16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
360 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
361 | |
362 | /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for | |
363 | the symbol. */ | |
46807bf4 AM |
364 | HOW (R_PPC_PLT16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
365 | ppc_elf_unhandled_reloc), | |
252b5132 RH |
366 | |
367 | /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with | |
368 | small data items. */ | |
46807bf4 AM |
369 | HOW (R_PPC_SDAREL16, 1, 16, 0xffff, 0, FALSE, signed, |
370 | ppc_elf_unhandled_reloc), | |
252b5132 | 371 | |
c061c2d8 | 372 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
373 | HOW (R_PPC_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
374 | ppc_elf_unhandled_reloc), | |
252b5132 | 375 | |
c3668558 | 376 | /* 16-bit lower half section relative relocation. */ |
46807bf4 AM |
377 | HOW (R_PPC_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
378 | ppc_elf_unhandled_reloc), | |
252b5132 | 379 | |
c3668558 | 380 | /* 16-bit upper half section relative relocation. */ |
46807bf4 AM |
381 | HOW (R_PPC_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, dont, |
382 | ppc_elf_unhandled_reloc), | |
252b5132 | 383 | |
c3668558 | 384 | /* 16-bit upper half adjusted section relative relocation. */ |
46807bf4 AM |
385 | HOW (R_PPC_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, dont, |
386 | ppc_elf_unhandled_reloc), | |
252b5132 | 387 | |
727fc41e | 388 | /* Marker relocs for TLS. */ |
46807bf4 AM |
389 | HOW (R_PPC_TLS, 2, 32, 0, 0, FALSE, dont, |
390 | bfd_elf_generic_reloc), | |
391 | ||
392 | HOW (R_PPC_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
393 | bfd_elf_generic_reloc), | |
394 | ||
395 | HOW (R_PPC_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
396 | bfd_elf_generic_reloc), | |
727fc41e | 397 | |
23cedd1d | 398 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
399 | HOW (R_PPC_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
400 | bfd_elf_generic_reloc), | |
401 | ||
402 | HOW (R_PPC_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
403 | bfd_elf_generic_reloc), | |
23cedd1d | 404 | |
7619e7c7 AM |
405 | /* Computes the load module index of the load module that contains the |
406 | definition of its TLS sym. */ | |
46807bf4 AM |
407 | HOW (R_PPC_DTPMOD32, 2, 32, 0xffffffff, 0, FALSE, dont, |
408 | ppc_elf_unhandled_reloc), | |
252b5132 | 409 | |
7619e7c7 AM |
410 | /* Computes a dtv-relative displacement, the difference between the value |
411 | of sym+add and the base address of the thread-local storage block that | |
412 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
413 | HOW (R_PPC_DTPREL32, 2, 32, 0xffffffff, 0, FALSE, dont, |
414 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
415 | |
416 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
417 | HOW (R_PPC_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
418 | ppc_elf_unhandled_reloc), | |
252b5132 | 419 | |
7619e7c7 | 420 | /* Like DTPREL16, but no overflow. */ |
46807bf4 AM |
421 | HOW (R_PPC_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
422 | ppc_elf_unhandled_reloc), | |
252b5132 | 423 | |
7619e7c7 | 424 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
425 | HOW (R_PPC_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
426 | ppc_elf_unhandled_reloc), | |
252b5132 | 427 | |
7619e7c7 | 428 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
429 | HOW (R_PPC_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
430 | ppc_elf_unhandled_reloc), | |
252b5132 | 431 | |
7619e7c7 AM |
432 | /* Computes a tp-relative displacement, the difference between the value of |
433 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
434 | HOW (R_PPC_TPREL32, 2, 32, 0xffffffff, 0, FALSE, dont, |
435 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
436 | |
437 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
438 | HOW (R_PPC_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
439 | ppc_elf_unhandled_reloc), | |
252b5132 | 440 | |
7619e7c7 | 441 | /* Like TPREL16, but no overflow. */ |
46807bf4 AM |
442 | HOW (R_PPC_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
443 | ppc_elf_unhandled_reloc), | |
252b5132 | 444 | |
7619e7c7 | 445 | /* Like TPREL16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
446 | HOW (R_PPC_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
447 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
448 | |
449 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
450 | HOW (R_PPC_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
451 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
452 | |
453 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
454 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
455 | to the first entry. */ | |
46807bf4 AM |
456 | HOW (R_PPC_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
457 | ppc_elf_unhandled_reloc), | |
252b5132 | 458 | |
7619e7c7 | 459 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
460 | HOW (R_PPC_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
461 | ppc_elf_unhandled_reloc), | |
252b5132 | 462 | |
7619e7c7 | 463 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
464 | HOW (R_PPC_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
465 | ppc_elf_unhandled_reloc), | |
252b5132 | 466 | |
7619e7c7 | 467 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
468 | HOW (R_PPC_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
469 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
470 | |
471 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
472 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
473 | first entry. */ | |
46807bf4 AM |
474 | HOW (R_PPC_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
475 | ppc_elf_unhandled_reloc), | |
252b5132 | 476 | |
7619e7c7 | 477 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
478 | HOW (R_PPC_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
479 | ppc_elf_unhandled_reloc), | |
252b5132 | 480 | |
7619e7c7 | 481 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
482 | HOW (R_PPC_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
483 | ppc_elf_unhandled_reloc), | |
252b5132 | 484 | |
7619e7c7 | 485 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
486 | HOW (R_PPC_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
487 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
488 | |
489 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes | |
490 | the offset to the entry. */ | |
46807bf4 AM |
491 | HOW (R_PPC_GOT_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
492 | ppc_elf_unhandled_reloc), | |
252b5132 | 493 | |
7619e7c7 | 494 | /* Like GOT_DTPREL16, but no overflow. */ |
46807bf4 AM |
495 | HOW (R_PPC_GOT_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
496 | ppc_elf_unhandled_reloc), | |
252b5132 | 497 | |
7619e7c7 | 498 | /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
499 | HOW (R_PPC_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
500 | ppc_elf_unhandled_reloc), | |
252b5132 | 501 | |
7619e7c7 | 502 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
503 | HOW (R_PPC_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
504 | ppc_elf_unhandled_reloc), | |
c3668558 | 505 | |
7619e7c7 AM |
506 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the |
507 | offset to the entry. */ | |
46807bf4 AM |
508 | HOW (R_PPC_GOT_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
509 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
510 | |
511 | /* Like GOT_TPREL16, but no overflow. */ | |
46807bf4 AM |
512 | HOW (R_PPC_GOT_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
513 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
514 | |
515 | /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
516 | HOW (R_PPC_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
517 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
518 | |
519 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
520 | HOW (R_PPC_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
521 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
522 | |
523 | /* The remaining relocs are from the Embedded ELF ABI, and are not | |
524 | in the SVR4 ELF ABI. */ | |
525 | ||
526 | /* 32 bit value resulting from the addend minus the symbol. */ | |
46807bf4 AM |
527 | HOW (R_PPC_EMB_NADDR32, 2, 32, 0xffffffff, 0, FALSE, dont, |
528 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
529 | |
530 | /* 16 bit value resulting from the addend minus the symbol. */ | |
46807bf4 AM |
531 | HOW (R_PPC_EMB_NADDR16, 1, 16, 0xffff, 0, FALSE, signed, |
532 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
533 | |
534 | /* 16 bit value resulting from the addend minus the symbol. */ | |
46807bf4 AM |
535 | HOW (R_PPC_EMB_NADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
536 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
537 | |
538 | /* The high order 16 bits of the addend minus the symbol. */ | |
46807bf4 AM |
539 | HOW (R_PPC_EMB_NADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont, |
540 | ppc_elf_unhandled_reloc), | |
7619e7c7 AM |
541 | |
542 | /* The high order 16 bits of the result of the addend minus the address, | |
543 | plus 1 if the contents of the low 16 bits, treated as a signed number, | |
544 | is negative. */ | |
46807bf4 AM |
545 | HOW (R_PPC_EMB_NADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont, |
546 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
547 | |
548 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
549 | address in the .sdata section, and returning the offset from | |
550 | _SDA_BASE_ for that relocation. */ | |
46807bf4 AM |
551 | HOW (R_PPC_EMB_SDAI16, 1, 16, 0xffff, 0, FALSE, signed, |
552 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
553 | |
554 | /* 16 bit value resulting from allocating a 4 byte word to hold an | |
555 | address in the .sdata2 section, and returning the offset from | |
556 | _SDA2_BASE_ for that relocation. */ | |
46807bf4 AM |
557 | HOW (R_PPC_EMB_SDA2I16, 1, 16, 0xffff, 0, FALSE, signed, |
558 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
559 | |
560 | /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with | |
561 | small data items. */ | |
46807bf4 AM |
562 | HOW (R_PPC_EMB_SDA2REL, 1, 16, 0xffff, 0, FALSE, signed, |
563 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
564 | |
565 | /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit | |
566 | signed offset from the appropriate base, and filling in the register | |
567 | field with the appropriate register (0, 2, or 13). */ | |
46807bf4 AM |
568 | HOW (R_PPC_EMB_SDA21, 2, 16, 0xffff, 0, FALSE, signed, |
569 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
570 | |
571 | /* Relocation not handled: R_PPC_EMB_MRKREF */ | |
572 | /* Relocation not handled: R_PPC_EMB_RELSEC16 */ | |
573 | /* Relocation not handled: R_PPC_EMB_RELST_LO */ | |
574 | /* Relocation not handled: R_PPC_EMB_RELST_HI */ | |
575 | /* Relocation not handled: R_PPC_EMB_RELST_HA */ | |
576 | /* Relocation not handled: R_PPC_EMB_BIT_FLD */ | |
577 | ||
578 | /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling | |
579 | in the 16 bit signed offset from the appropriate base, and filling in the | |
580 | register field with the appropriate register (0, 2, or 13). */ | |
46807bf4 AM |
581 | HOW (R_PPC_EMB_RELSDA, 1, 16, 0xffff, 0, FALSE, signed, |
582 | ppc_elf_unhandled_reloc), | |
25dbc73a | 583 | |
b9c361e0 | 584 | /* A relative 8 bit branch. */ |
46807bf4 AM |
585 | HOW (R_PPC_VLE_REL8, 1, 8, 0xff, 1, TRUE, signed, |
586 | bfd_elf_generic_reloc), | |
68ffbac6 | 587 | |
b9c361e0 | 588 | /* A relative 15 bit branch. */ |
46807bf4 AM |
589 | HOW (R_PPC_VLE_REL15, 2, 16, 0xfffe, 0, TRUE, signed, |
590 | bfd_elf_generic_reloc), | |
b9c361e0 | 591 | |
68ffbac6 | 592 | /* A relative 24 bit branch. */ |
46807bf4 AM |
593 | HOW (R_PPC_VLE_REL24, 2, 25, 0x1fffffe, 0, TRUE, signed, |
594 | bfd_elf_generic_reloc), | |
b9c361e0 JL |
595 | |
596 | /* The 16 LSBS in split16a format. */ | |
46807bf4 AM |
597 | HOW (R_PPC_VLE_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont, |
598 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
599 | |
600 | /* The 16 LSBS in split16d format. */ | |
46807bf4 AM |
601 | HOW (R_PPC_VLE_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont, |
602 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
603 | |
604 | /* Bits 16-31 split16a format. */ | |
46807bf4 AM |
605 | HOW (R_PPC_VLE_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
606 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
607 | |
608 | /* Bits 16-31 split16d format. */ | |
46807bf4 AM |
609 | HOW (R_PPC_VLE_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
610 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
611 | |
612 | /* Bits 16-31 (High Adjusted) in split16a format. */ | |
46807bf4 AM |
613 | HOW (R_PPC_VLE_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
614 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
615 | |
616 | /* Bits 16-31 (High Adjusted) in split16d format. */ | |
46807bf4 AM |
617 | HOW (R_PPC_VLE_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
618 | ppc_elf_unhandled_reloc), | |
b9c361e0 | 619 | |
86c95733 AM |
620 | /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i |
621 | instructions. If the register base is 0 then the linker changes | |
622 | the e_add16i to an e_li instruction. */ | |
46807bf4 AM |
623 | HOW (R_PPC_VLE_SDA21, 2, 16, 0xffff, 0, FALSE, signed, |
624 | ppc_elf_unhandled_reloc), | |
b9c361e0 | 625 | |
86c95733 | 626 | /* Like R_PPC_VLE_SDA21 but ignore overflow. */ |
46807bf4 AM |
627 | HOW (R_PPC_VLE_SDA21_LO, 2, 16, 0xffff, 0, FALSE, dont, |
628 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
629 | |
630 | /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */ | |
46807bf4 AM |
631 | HOW (R_PPC_VLE_SDAREL_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont, |
632 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
633 | |
634 | /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */ | |
46807bf4 AM |
635 | HOW (R_PPC_VLE_SDAREL_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont, |
636 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
637 | |
638 | /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */ | |
46807bf4 AM |
639 | HOW (R_PPC_VLE_SDAREL_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
640 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
641 | |
642 | /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */ | |
46807bf4 AM |
643 | HOW (R_PPC_VLE_SDAREL_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
644 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
645 | |
646 | /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */ | |
46807bf4 AM |
647 | HOW (R_PPC_VLE_SDAREL_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont, |
648 | ppc_elf_unhandled_reloc), | |
b9c361e0 JL |
649 | |
650 | /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */ | |
46807bf4 AM |
651 | HOW (R_PPC_VLE_SDAREL_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont, |
652 | ppc_elf_unhandled_reloc), | |
b9c361e0 | 653 | |
83eef883 | 654 | /* e_li split20 format. */ |
bb6bf75e AM |
655 | HOW (R_PPC_VLE_ADDR20, 2, 20, 0x1f7fff, 0, FALSE, dont, |
656 | ppc_elf_unhandled_reloc), | |
46807bf4 AM |
657 | |
658 | HOW (R_PPC_IRELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont, | |
659 | ppc_elf_unhandled_reloc), | |
e054468f | 660 | |
d7128ce4 | 661 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
662 | HOW (R_PPC_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
663 | bfd_elf_generic_reloc), | |
d7128ce4 AM |
664 | |
665 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
666 | HOW (R_PPC_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
667 | bfd_elf_generic_reloc), | |
d7128ce4 AM |
668 | |
669 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
670 | HOW (R_PPC_REL16_HI, 1, 16, 0xffff, 16, TRUE, dont, |
671 | bfd_elf_generic_reloc), | |
d7128ce4 AM |
672 | |
673 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
674 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
675 | HOW (R_PPC_REL16_HA, 1, 16, 0xffff, 16, TRUE, dont, |
676 | ppc_elf_addr16_ha_reloc), | |
d7128ce4 | 677 | |
a680de9a | 678 | /* Like R_PPC_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
679 | HOW (R_PPC_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
680 | ppc_elf_addr16_ha_reloc), | |
a680de9a | 681 | |
7ba71655 | 682 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
683 | HOW (R_PPC_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
684 | ppc_elf_addr16_ha_reloc), | |
7ba71655 | 685 | |
25dbc73a | 686 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
687 | HOW (R_PPC_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
688 | NULL), | |
25dbc73a AM |
689 | |
690 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
691 | HOW (R_PPC_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
692 | NULL), | |
7619e7c7 | 693 | |
25dbc73a | 694 | /* Phony reloc to handle AIX style TOC entries. */ |
46807bf4 AM |
695 | HOW (R_PPC_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
696 | ppc_elf_unhandled_reloc), | |
25dbc73a AM |
697 | }; |
698 | \f | |
699 | /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ | |
700 | ||
701 | static void | |
702 | ppc_elf_howto_init (void) | |
703 | { | |
704 | unsigned int i, type; | |
705 | ||
706 | for (i = 0; | |
707 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
708 | i++) | |
709 | { | |
710 | type = ppc_elf_howto_raw[i].type; | |
711 | if (type >= (sizeof (ppc_elf_howto_table) | |
712 | / sizeof (ppc_elf_howto_table[0]))) | |
713 | abort (); | |
714 | ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; | |
715 | } | |
716 | } | |
717 | ||
718 | static reloc_howto_type * | |
719 | ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
720 | bfd_reloc_code_real_type code) | |
721 | { | |
722 | enum elf_ppc_reloc_type r; | |
723 | ||
724 | /* Initialize howto table if not already done. */ | |
725 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
726 | ppc_elf_howto_init (); | |
727 | ||
728 | switch (code) | |
729 | { | |
730 | default: | |
731 | return NULL; | |
732 | ||
733 | case BFD_RELOC_NONE: r = R_PPC_NONE; break; | |
734 | case BFD_RELOC_32: r = R_PPC_ADDR32; break; | |
735 | case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; | |
1fe532cf | 736 | case BFD_RELOC_PPC64_ADDR16_DS: |
25dbc73a | 737 | case BFD_RELOC_16: r = R_PPC_ADDR16; break; |
1fe532cf | 738 | case BFD_RELOC_PPC64_ADDR16_LO_DS: |
25dbc73a AM |
739 | case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; |
740 | case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; | |
741 | case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; | |
742 | case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; | |
743 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; | |
744 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; | |
745 | case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; | |
746 | case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; | |
747 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; | |
748 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; | |
1fe532cf | 749 | case BFD_RELOC_PPC64_GOT16_DS: |
25dbc73a | 750 | case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; |
1fe532cf | 751 | case BFD_RELOC_PPC64_GOT16_LO_DS: |
25dbc73a AM |
752 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; |
753 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; | |
754 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; | |
755 | case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; | |
756 | case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; | |
757 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; | |
758 | case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; | |
759 | case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; | |
760 | case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; | |
761 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; | |
1fe532cf | 762 | case BFD_RELOC_PPC64_PLT16_LO_DS: |
25dbc73a AM |
763 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; |
764 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; | |
765 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; | |
766 | case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; | |
1fe532cf | 767 | case BFD_RELOC_PPC64_SECTOFF_DS: |
25dbc73a | 768 | case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; |
1fe532cf | 769 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: |
25dbc73a AM |
770 | case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; |
771 | case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; | |
772 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; | |
773 | case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; | |
1fe532cf | 774 | case BFD_RELOC_PPC64_TOC16_DS: |
25dbc73a AM |
775 | case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; |
776 | case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; | |
727fc41e AM |
777 | case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break; |
778 | case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break; | |
25dbc73a | 779 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; |
1fe532cf | 780 | case BFD_RELOC_PPC64_TPREL16_DS: |
25dbc73a | 781 | case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; |
1fe532cf | 782 | case BFD_RELOC_PPC64_TPREL16_LO_DS: |
25dbc73a AM |
783 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; |
784 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; | |
785 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; | |
786 | case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; | |
1fe532cf | 787 | case BFD_RELOC_PPC64_DTPREL16_DS: |
25dbc73a | 788 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; |
1fe532cf | 789 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: |
25dbc73a AM |
790 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; |
791 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; | |
792 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; | |
793 | case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; | |
794 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; | |
795 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; | |
796 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; | |
797 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; | |
798 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; | |
799 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; | |
800 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; | |
801 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; | |
802 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; | |
803 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; | |
804 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; | |
805 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; | |
806 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; | |
807 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; | |
808 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; | |
809 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; | |
810 | case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; | |
811 | case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; | |
812 | case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; | |
813 | case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; | |
814 | case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; | |
815 | case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; | |
816 | case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; | |
817 | case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; | |
818 | case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; | |
819 | case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; | |
820 | case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; | |
821 | case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; | |
822 | case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; | |
823 | case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; | |
824 | case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; | |
825 | case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; | |
b9c361e0 JL |
826 | case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break; |
827 | case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break; | |
828 | case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break; | |
829 | case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break; | |
830 | case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break; | |
831 | case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break; | |
832 | case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break; | |
833 | case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break; | |
834 | case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break; | |
835 | case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break; | |
836 | case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break; | |
837 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
838 | r = R_PPC_VLE_SDAREL_LO16A; | |
839 | break; | |
840 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
841 | r = R_PPC_VLE_SDAREL_LO16D; | |
842 | break; | |
843 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
844 | r = R_PPC_VLE_SDAREL_HI16A; | |
845 | break; | |
846 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
847 | r = R_PPC_VLE_SDAREL_HI16D; | |
848 | break; | |
849 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
850 | r = R_PPC_VLE_SDAREL_HA16A; | |
851 | break; | |
852 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
853 | r = R_PPC_VLE_SDAREL_HA16D; | |
854 | break; | |
d7128ce4 AM |
855 | case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break; |
856 | case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break; | |
857 | case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break; | |
858 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break; | |
7ba71655 | 859 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break; |
a680de9a | 860 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break; |
25dbc73a AM |
861 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; |
862 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; | |
863 | } | |
864 | ||
865 | return ppc_elf_howto_table[r]; | |
866 | }; | |
867 | ||
157090f7 AM |
868 | static reloc_howto_type * |
869 | ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
870 | const char *r_name) | |
871 | { | |
872 | unsigned int i; | |
873 | ||
874 | for (i = 0; | |
875 | i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); | |
876 | i++) | |
877 | if (ppc_elf_howto_raw[i].name != NULL | |
878 | && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0) | |
879 | return &ppc_elf_howto_raw[i]; | |
880 | ||
881 | return NULL; | |
882 | } | |
883 | ||
25dbc73a AM |
884 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
885 | ||
f3185997 | 886 | static bfd_boolean |
4aef7643 | 887 | ppc_elf_info_to_howto (bfd *abfd, |
25dbc73a AM |
888 | arelent *cache_ptr, |
889 | Elf_Internal_Rela *dst) | |
890 | { | |
cd21f5da NC |
891 | unsigned int r_type; |
892 | ||
25dbc73a AM |
893 | /* Initialize howto table if not already done. */ |
894 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
895 | ppc_elf_howto_init (); | |
896 | ||
cd21f5da NC |
897 | r_type = ELF32_R_TYPE (dst->r_info); |
898 | if (r_type >= R_PPC_max) | |
899 | { | |
695344c0 | 900 | /* xgettext:c-format */ |
0aa13fee | 901 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 902 | abfd, r_type); |
cd21f5da | 903 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 904 | return FALSE; |
cd21f5da | 905 | } |
f3185997 | 906 | |
cd21f5da | 907 | cache_ptr->howto = ppc_elf_howto_table[r_type]; |
375de94a AM |
908 | |
909 | /* Just because the above assert didn't trigger doesn't mean that | |
910 | ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */ | |
f3185997 | 911 | if (cache_ptr->howto == NULL) |
375de94a | 912 | { |
695344c0 | 913 | /* xgettext:c-format */ |
0aa13fee | 914 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 915 | abfd, r_type); |
375de94a AM |
916 | bfd_set_error (bfd_error_bad_value); |
917 | ||
f3185997 | 918 | return FALSE; |
375de94a | 919 | } |
f3185997 NC |
920 | |
921 | return TRUE; | |
25dbc73a AM |
922 | } |
923 | ||
d7128ce4 | 924 | /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */ |
25dbc73a AM |
925 | |
926 | static bfd_reloc_status_type | |
4aef7643 | 927 | ppc_elf_addr16_ha_reloc (bfd *abfd, |
25dbc73a AM |
928 | arelent *reloc_entry, |
929 | asymbol *symbol, | |
4aef7643 | 930 | void *data, |
25dbc73a AM |
931 | asection *input_section, |
932 | bfd *output_bfd, | |
933 | char **error_message ATTRIBUTE_UNUSED) | |
934 | { | |
a680de9a PB |
935 | enum elf_ppc_reloc_type r_type; |
936 | long insn; | |
937 | bfd_size_type octets; | |
938 | bfd_vma value; | |
25dbc73a AM |
939 | |
940 | if (output_bfd != NULL) | |
941 | { | |
942 | reloc_entry->address += input_section->output_offset; | |
943 | return bfd_reloc_ok; | |
944 | } | |
945 | ||
a680de9a PB |
946 | reloc_entry->addend += 0x8000; |
947 | r_type = reloc_entry->howto->type; | |
948 | if (r_type != R_PPC_REL16DX_HA) | |
949 | return bfd_reloc_continue; | |
950 | ||
951 | value = 0; | |
952 | if (!bfd_is_com_section (symbol->section)) | |
953 | value = symbol->value; | |
954 | value += (reloc_entry->addend | |
955 | + symbol->section->output_offset | |
956 | + symbol->section->output_section->vma); | |
957 | value -= (reloc_entry->address | |
958 | + input_section->output_offset | |
959 | + input_section->output_section->vma); | |
960 | value >>= 16; | |
961 | ||
bb294208 | 962 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
963 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
964 | insn &= ~0x1fffc1; | |
965 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
966 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
967 | return bfd_reloc_ok; | |
25dbc73a AM |
968 | } |
969 | ||
970 | static bfd_reloc_status_type | |
971 | ppc_elf_unhandled_reloc (bfd *abfd, | |
972 | arelent *reloc_entry, | |
973 | asymbol *symbol, | |
974 | void *data, | |
975 | asection *input_section, | |
976 | bfd *output_bfd, | |
977 | char **error_message) | |
978 | { | |
979 | /* If this is a relocatable link (output_bfd test tells us), just | |
980 | call the generic function. Any adjustment will be done at final | |
981 | link time. */ | |
982 | if (output_bfd != NULL) | |
983 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
984 | input_section, output_bfd, error_message); | |
985 | ||
986 | if (error_message != NULL) | |
987 | { | |
988 | static char buf[60]; | |
989 | sprintf (buf, _("generic linker can't handle %s"), | |
990 | reloc_entry->howto->name); | |
991 | *error_message = buf; | |
992 | } | |
993 | return bfd_reloc_dangerous; | |
994 | } | |
995 | \f | |
996 | /* Sections created by the linker. */ | |
997 | ||
998 | typedef struct elf_linker_section | |
999 | { | |
c9a2f333 | 1000 | /* Pointer to the bfd section. */ |
25dbc73a | 1001 | asection *section; |
c9a2f333 AM |
1002 | /* Section name. */ |
1003 | const char *name; | |
1004 | /* Associated bss section name. */ | |
1005 | const char *bss_name; | |
1006 | /* Associated symbol name. */ | |
1007 | const char *sym_name; | |
046183de AM |
1008 | /* Associated symbol. */ |
1009 | struct elf_link_hash_entry *sym; | |
25dbc73a AM |
1010 | } elf_linker_section_t; |
1011 | ||
1012 | /* Linked list of allocated pointer entries. This hangs off of the | |
1013 | symbol lists, and provides allows us to return different pointers, | |
1014 | based on different addend's. */ | |
1015 | ||
1016 | typedef struct elf_linker_section_pointers | |
1017 | { | |
1018 | /* next allocated pointer for this symbol */ | |
1019 | struct elf_linker_section_pointers *next; | |
1020 | /* offset of pointer from beginning of section */ | |
1021 | bfd_vma offset; | |
1022 | /* addend used */ | |
1023 | bfd_vma addend; | |
1024 | /* which linker section this is */ | |
1025 | elf_linker_section_t *lsect; | |
25dbc73a AM |
1026 | } elf_linker_section_pointers_t; |
1027 | ||
1028 | struct ppc_elf_obj_tdata | |
1029 | { | |
1030 | struct elf_obj_tdata elf; | |
1031 | ||
1032 | /* A mapping from local symbols to offsets into the various linker | |
1033 | sections added. This is index by the symbol index. */ | |
1034 | elf_linker_section_pointers_t **linker_section_pointers; | |
016687f8 AM |
1035 | |
1036 | /* Flags used to auto-detect plt type. */ | |
1037 | unsigned int makes_plt_call : 1; | |
1038 | unsigned int has_rel16 : 1; | |
25dbc73a AM |
1039 | }; |
1040 | ||
1041 | #define ppc_elf_tdata(bfd) \ | |
1042 | ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) | |
7619e7c7 | 1043 | |
25dbc73a AM |
1044 | #define elf_local_ptr_offsets(bfd) \ |
1045 | (ppc_elf_tdata (bfd)->linker_section_pointers) | |
7619e7c7 | 1046 | |
0c8d6e5c AM |
1047 | #define is_ppc_elf(bfd) \ |
1048 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1049 | && elf_object_id (bfd) == PPC32_ELF_DATA) |
0c8d6e5c | 1050 | |
25dbc73a | 1051 | /* Override the generic function because we store some extras. */ |
7619e7c7 | 1052 | |
25dbc73a AM |
1053 | static bfd_boolean |
1054 | ppc_elf_mkobject (bfd *abfd) | |
1055 | { | |
0ffa91dd | 1056 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata), |
4dfe6ac6 | 1057 | PPC32_ELF_DATA); |
25dbc73a | 1058 | } |
7619e7c7 | 1059 | |
14b57c7c AM |
1060 | /* When defaulting arch/mach, decode apuinfo to find a better match. */ |
1061 | ||
1062 | bfd_boolean | |
1063 | _bfd_elf_ppc_set_arch (bfd *abfd) | |
1064 | { | |
1065 | unsigned long mach = 0; | |
1066 | asection *s; | |
1067 | unsigned char *contents; | |
1068 | ||
1069 | if (abfd->arch_info->bits_per_word == 32 | |
1070 | && bfd_big_endian (abfd)) | |
1071 | { | |
1072 | ||
1073 | for (s = abfd->sections; s != NULL; s = s->next) | |
1074 | if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0) | |
1075 | break; | |
1076 | if (s != NULL) | |
1077 | mach = bfd_mach_ppc_vle; | |
1078 | } | |
1079 | ||
1080 | if (mach == 0) | |
1081 | { | |
1082 | s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
62a47958 AM |
1083 | if (s != NULL |
1084 | && s->size >= 24 | |
1085 | && bfd_malloc_and_get_section (abfd, s, &contents)) | |
14b57c7c AM |
1086 | { |
1087 | unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4); | |
1088 | unsigned int i; | |
1089 | ||
1090 | for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4) | |
1091 | { | |
1092 | unsigned int val = bfd_get_32 (abfd, contents + i); | |
1093 | switch (val >> 16) | |
1094 | { | |
1095 | case PPC_APUINFO_PMR: | |
1096 | case PPC_APUINFO_RFMCI: | |
1097 | if (mach == 0) | |
1098 | mach = bfd_mach_ppc_titan; | |
1099 | break; | |
1100 | ||
1101 | case PPC_APUINFO_ISEL: | |
1102 | case PPC_APUINFO_CACHELCK: | |
1103 | if (mach == bfd_mach_ppc_titan) | |
1104 | mach = bfd_mach_ppc_e500mc; | |
1105 | break; | |
1106 | ||
1107 | case PPC_APUINFO_SPE: | |
1108 | case PPC_APUINFO_EFS: | |
1109 | case PPC_APUINFO_BRLOCK: | |
1110 | if (mach != bfd_mach_ppc_vle) | |
1111 | mach = bfd_mach_ppc_e500; | |
8941017b | 1112 | break; |
14b57c7c AM |
1113 | |
1114 | case PPC_APUINFO_VLE: | |
1115 | mach = bfd_mach_ppc_vle; | |
1116 | break; | |
1117 | ||
1118 | default: | |
1119 | mach = -1ul; | |
1120 | } | |
1121 | } | |
1122 | free (contents); | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | if (mach != 0 && mach != -1ul) | |
1127 | { | |
1128 | const bfd_arch_info_type *arch; | |
1129 | ||
1130 | for (arch = abfd->arch_info->next; arch; arch = arch->next) | |
1131 | if (arch->mach == mach) | |
1132 | { | |
1133 | abfd->arch_info = arch; | |
1134 | break; | |
1135 | } | |
1136 | } | |
1137 | return TRUE; | |
1138 | } | |
1139 | ||
25dbc73a | 1140 | /* Fix bad default arch selected for a 32 bit input bfd when the |
14b57c7c | 1141 | default is 64 bit. Also select arch based on apuinfo. */ |
7619e7c7 | 1142 | |
25dbc73a AM |
1143 | static bfd_boolean |
1144 | ppc_elf_object_p (bfd *abfd) | |
1145 | { | |
14b57c7c AM |
1146 | if (!abfd->arch_info->the_default) |
1147 | return TRUE; | |
1148 | ||
1149 | if (abfd->arch_info->bits_per_word == 64) | |
25dbc73a AM |
1150 | { |
1151 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
7619e7c7 | 1152 | |
25dbc73a AM |
1153 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) |
1154 | { | |
1155 | /* Relies on arch after 64 bit default being 32 bit default. */ | |
1156 | abfd->arch_info = abfd->arch_info->next; | |
1157 | BFD_ASSERT (abfd->arch_info->bits_per_word == 32); | |
1158 | } | |
1159 | } | |
14b57c7c | 1160 | return _bfd_elf_ppc_set_arch (abfd); |
25dbc73a | 1161 | } |
7619e7c7 | 1162 | |
25dbc73a | 1163 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
7619e7c7 | 1164 | |
25dbc73a AM |
1165 | static bfd_boolean |
1166 | ppc_elf_set_private_flags (bfd *abfd, flagword flags) | |
1167 | { | |
1168 | BFD_ASSERT (!elf_flags_init (abfd) | |
1169 | || elf_elfheader (abfd)->e_flags == flags); | |
7619e7c7 | 1170 | |
25dbc73a AM |
1171 | elf_elfheader (abfd)->e_flags = flags; |
1172 | elf_flags_init (abfd) = TRUE; | |
1173 | return TRUE; | |
1174 | } | |
1175 | ||
25dbc73a | 1176 | /* Support for core dump NOTE sections. */ |
deaaf2f3 | 1177 | |
b34976b6 | 1178 | static bfd_boolean |
25dbc73a | 1179 | ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 1180 | { |
25dbc73a AM |
1181 | int offset; |
1182 | unsigned int size; | |
252b5132 | 1183 | |
25dbc73a AM |
1184 | switch (note->descsz) |
1185 | { | |
1186 | default: | |
1187 | return FALSE; | |
252b5132 | 1188 | |
25dbc73a AM |
1189 | case 268: /* Linux/PPC. */ |
1190 | /* pr_cursig */ | |
228e534f | 1191 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
deaaf2f3 | 1192 | |
25dbc73a | 1193 | /* pr_pid */ |
228e534f | 1194 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
9abc968f | 1195 | |
25dbc73a AM |
1196 | /* pr_reg */ |
1197 | offset = 72; | |
1198 | size = 192; | |
deaaf2f3 | 1199 | |
25dbc73a AM |
1200 | break; |
1201 | } | |
deaaf2f3 | 1202 | |
25dbc73a AM |
1203 | /* Make a ".reg/999" section. */ |
1204 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1205 | size, note->descpos + offset); | |
1206 | } | |
252b5132 | 1207 | |
25dbc73a AM |
1208 | static bfd_boolean |
1209 | ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1210 | { | |
1211 | switch (note->descsz) | |
deaaf2f3 | 1212 | { |
25dbc73a AM |
1213 | default: |
1214 | return FALSE; | |
deaaf2f3 | 1215 | |
25dbc73a | 1216 | case 128: /* Linux/PPC elf_prpsinfo. */ |
228e534f | 1217 | elf_tdata (abfd)->core->pid |
bc989cdc | 1218 | = bfd_get_32 (abfd, note->descdata + 16); |
228e534f | 1219 | elf_tdata (abfd)->core->program |
25dbc73a | 1220 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
228e534f | 1221 | elf_tdata (abfd)->core->command |
25dbc73a AM |
1222 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
1223 | } | |
9abc968f | 1224 | |
25dbc73a AM |
1225 | /* Note that for some reason, a spurious space is tacked |
1226 | onto the end of the args in some (at least one anyway) | |
1227 | implementations, so strip it off if it exists. */ | |
70bccea4 | 1228 | |
25dbc73a | 1229 | { |
228e534f | 1230 | char *command = elf_tdata (abfd)->core->command; |
25dbc73a | 1231 | int n = strlen (command); |
70bccea4 | 1232 | |
25dbc73a AM |
1233 | if (0 < n && command[n - 1] == ' ') |
1234 | command[n - 1] = '\0'; | |
1235 | } | |
deaaf2f3 | 1236 | |
25dbc73a AM |
1237 | return TRUE; |
1238 | } | |
deaaf2f3 | 1239 | |
183e98be AM |
1240 | static char * |
1241 | ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...) | |
1242 | { | |
1243 | switch (note_type) | |
1244 | { | |
1245 | default: | |
1246 | return NULL; | |
1247 | ||
1248 | case NT_PRPSINFO: | |
1249 | { | |
602f1657 | 1250 | char data[128] ATTRIBUTE_NONSTRING; |
183e98be AM |
1251 | va_list ap; |
1252 | ||
1253 | va_start (ap, note_type); | |
75cd47ed | 1254 | memset (data, 0, sizeof (data)); |
183e98be | 1255 | strncpy (data + 32, va_arg (ap, const char *), 16); |
be3e27bb | 1256 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1257 | DIAGNOSTIC_PUSH; |
be3e27bb | 1258 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1259 | -Wstringop-truncation: |
1260 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1261 | */ | |
95da9854 L |
1262 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1263 | #endif | |
183e98be | 1264 | strncpy (data + 48, va_arg (ap, const char *), 80); |
be3e27bb | 1265 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1266 | DIAGNOSTIC_POP; |
fe75810f | 1267 | #endif |
183e98be AM |
1268 | va_end (ap); |
1269 | return elfcore_write_note (abfd, buf, bufsiz, | |
1270 | "CORE", note_type, data, sizeof (data)); | |
1271 | } | |
1272 | ||
1273 | case NT_PRSTATUS: | |
1274 | { | |
1275 | char data[268]; | |
1276 | va_list ap; | |
1277 | long pid; | |
1278 | int cursig; | |
1279 | const void *greg; | |
1280 | ||
1281 | va_start (ap, note_type); | |
1282 | memset (data, 0, 72); | |
1283 | pid = va_arg (ap, long); | |
1284 | bfd_put_32 (abfd, pid, data + 24); | |
1285 | cursig = va_arg (ap, int); | |
1286 | bfd_put_16 (abfd, cursig, data + 12); | |
1287 | greg = va_arg (ap, const void *); | |
1288 | memcpy (data + 72, greg, 192); | |
1289 | memset (data + 264, 0, 4); | |
1290 | va_end (ap); | |
1291 | return elfcore_write_note (abfd, buf, bufsiz, | |
1292 | "CORE", note_type, data, sizeof (data)); | |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | ||
b9c361e0 | 1297 | static flagword |
68ffbac6 | 1298 | ppc_elf_lookup_section_flags (char *flag_name) |
b9c361e0 JL |
1299 | { |
1300 | ||
1301 | if (!strcmp (flag_name, "SHF_PPC_VLE")) | |
1302 | return SHF_PPC_VLE; | |
1303 | ||
1304 | return 0; | |
1305 | } | |
1306 | ||
25dbc73a AM |
1307 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
1308 | or (bfd_vma) -1 if it should not be included. */ | |
deaaf2f3 | 1309 | |
25dbc73a AM |
1310 | static bfd_vma |
1311 | ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, | |
1312 | const asection *plt ATTRIBUTE_UNUSED, | |
1313 | const arelent *rel) | |
1314 | { | |
1315 | return rel->address; | |
1316 | } | |
deaaf2f3 | 1317 | |
25dbc73a | 1318 | /* Handle a PowerPC specific section when reading an object file. This |
6dc132d9 L |
1319 | is called when bfd_section_from_shdr finds a section with an unknown |
1320 | type. */ | |
deaaf2f3 | 1321 | |
25dbc73a | 1322 | static bfd_boolean |
6dc132d9 L |
1323 | ppc_elf_section_from_shdr (bfd *abfd, |
1324 | Elf_Internal_Shdr *hdr, | |
1325 | const char *name, | |
1326 | int shindex) | |
25dbc73a AM |
1327 | { |
1328 | asection *newsect; | |
1329 | flagword flags; | |
d1c6de6f | 1330 | |
6dc132d9 | 1331 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
25dbc73a | 1332 | return FALSE; |
deaaf2f3 | 1333 | |
25dbc73a | 1334 | newsect = hdr->bfd_section; |
bf577467 | 1335 | flags = 0; |
25dbc73a AM |
1336 | if (hdr->sh_flags & SHF_EXCLUDE) |
1337 | flags |= SEC_EXCLUDE; | |
9abc968f | 1338 | |
25dbc73a AM |
1339 | if (hdr->sh_type == SHT_ORDERED) |
1340 | flags |= SEC_SORT_ENTRIES; | |
d1c6de6f | 1341 | |
bf577467 AM |
1342 | if (strncmp (name, ".PPC.EMB", 8) == 0) |
1343 | name += 8; | |
1344 | if (strncmp (name, ".sbss", 5) == 0 | |
1345 | || strncmp (name, ".sdata", 6) == 0) | |
1346 | flags |= SEC_SMALL_DATA; | |
1347 | ||
1348 | return (flags == 0 | |
1349 | || bfd_set_section_flags (newsect, newsect->flags | flags)); | |
25dbc73a AM |
1350 | } |
1351 | ||
1352 | /* Set up any other section flags and such that may be necessary. */ | |
1353 | ||
1354 | static bfd_boolean | |
1355 | ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
1356 | Elf_Internal_Shdr *shdr, | |
1357 | asection *asect) | |
1358 | { | |
25dbc73a AM |
1359 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
1360 | shdr->sh_type = SHT_ORDERED; | |
1361 | ||
1362 | return TRUE; | |
1363 | } | |
1364 | ||
1365 | /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we | |
1366 | need to bump up the number of section headers. */ | |
1367 | ||
1368 | static int | |
a6b96beb AM |
1369 | ppc_elf_additional_program_headers (bfd *abfd, |
1370 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
25dbc73a AM |
1371 | { |
1372 | asection *s; | |
1373 | int ret = 0; | |
d1c6de6f | 1374 | |
25dbc73a AM |
1375 | s = bfd_get_section_by_name (abfd, ".sbss2"); |
1376 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1377 | ++ret; | |
d1c6de6f | 1378 | |
25dbc73a AM |
1379 | s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); |
1380 | if (s != NULL && (s->flags & SEC_ALLOC) != 0) | |
1381 | ++ret; | |
deaaf2f3 | 1382 | |
25dbc73a AM |
1383 | return ret; |
1384 | } | |
deaaf2f3 | 1385 | |
68ffbac6 | 1386 | /* Modify the segment map for VLE executables. */ |
b9c361e0 JL |
1387 | |
1388 | bfd_boolean | |
1389 | ppc_elf_modify_segment_map (bfd *abfd, | |
1390 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
1391 | { | |
f7d69005 | 1392 | struct elf_segment_map *m; |
b9c361e0 JL |
1393 | |
1394 | /* At this point in the link, output sections have already been sorted by | |
1395 | LMA and assigned to segments. All that is left to do is to ensure | |
1396 | there is no mixing of VLE & non-VLE sections in a text segment. | |
1397 | If we find that case, we split the segment. | |
1398 | We maintain the original output section order. */ | |
1399 | ||
12bd6957 | 1400 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
b9c361e0 | 1401 | { |
f7d69005 | 1402 | struct elf_segment_map *n; |
986f0783 | 1403 | size_t amt; |
f7d69005 AM |
1404 | unsigned int j, k; |
1405 | unsigned int p_flags; | |
1406 | ||
1407 | if (m->p_type != PT_LOAD || m->count == 0) | |
b9c361e0 JL |
1408 | continue; |
1409 | ||
f7d69005 | 1410 | for (p_flags = PF_R, j = 0; j != m->count; ++j) |
b9c361e0 | 1411 | { |
f7d69005 AM |
1412 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
1413 | p_flags |= PF_W; | |
1414 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
1415 | { | |
1416 | p_flags |= PF_X; | |
1417 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
1418 | p_flags |= PF_PPC_VLE; | |
1419 | break; | |
1420 | } | |
1421 | } | |
1422 | if (j != m->count) | |
1423 | while (++j != m->count) | |
1424 | { | |
1425 | unsigned int p_flags1 = PF_R; | |
94caa966 | 1426 | |
f7d69005 AM |
1427 | if ((m->sections[j]->flags & SEC_READONLY) == 0) |
1428 | p_flags1 |= PF_W; | |
1429 | if ((m->sections[j]->flags & SEC_CODE) != 0) | |
1430 | { | |
1431 | p_flags1 |= PF_X; | |
1432 | if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0) | |
1433 | p_flags1 |= PF_PPC_VLE; | |
1434 | if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0) | |
1435 | break; | |
1436 | } | |
1437 | p_flags |= p_flags1; | |
1438 | } | |
1439 | /* If we're splitting a segment which originally contained rw | |
1440 | sections then those sections might now only be in one of the | |
1441 | two parts. So always set p_flags if splitting, even if we | |
1442 | are being called for objcopy with p_flags_valid set. */ | |
1443 | if (j != m->count || !m->p_flags_valid) | |
1444 | { | |
1445 | m->p_flags_valid = 1; | |
1446 | m->p_flags = p_flags; | |
1447 | } | |
1448 | if (j == m->count) | |
b9c361e0 JL |
1449 | continue; |
1450 | ||
f7d69005 | 1451 | /* Sections 0..j-1 stay in this (current) segment, |
b9c361e0 JL |
1452 | the remainder are put in a new segment. |
1453 | The scan resumes with the new segment. */ | |
1454 | ||
b9c361e0 JL |
1455 | amt = sizeof (struct elf_segment_map); |
1456 | amt += (m->count - j - 1) * sizeof (asection *); | |
1457 | n = (struct elf_segment_map *) bfd_zalloc (abfd, amt); | |
1458 | if (n == NULL) | |
954b63d4 | 1459 | return FALSE; |
b9c361e0 JL |
1460 | |
1461 | n->p_type = PT_LOAD; | |
b9c361e0 JL |
1462 | n->count = m->count - j; |
1463 | for (k = 0; k < n->count; ++k) | |
f7d69005 AM |
1464 | n->sections[k] = m->sections[j + k]; |
1465 | m->count = j; | |
1466 | m->p_size_valid = 0; | |
b9c361e0 JL |
1467 | n->next = m->next; |
1468 | m->next = n; | |
b9c361e0 JL |
1469 | } |
1470 | ||
1471 | return TRUE; | |
1472 | } | |
1473 | ||
25dbc73a AM |
1474 | /* Add extra PPC sections -- Note, for now, make .sbss2 and |
1475 | .PPC.EMB.sbss0 a normal section, and not a bss section so | |
1476 | that the linker doesn't crater when trying to make more than | |
1477 | 2 sections. */ | |
e656e369 | 1478 | |
b35d266b | 1479 | static const struct bfd_elf_special_section ppc_elf_special_sections[] = |
7f4d3958 | 1480 | { |
14b57c7c AM |
1481 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, |
1482 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
1483 | { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1484 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1485 | { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC }, | |
1486 | { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC }, | |
1487 | { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 }, | |
1488 | { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1489 | { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
1490 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1491 | }; |
1492 | ||
551b43fd AM |
1493 | /* This is what we want for new plt/got. */ |
1494 | static struct bfd_elf_special_section ppc_alt_plt = | |
07d6d2b8 | 1495 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC }; |
551b43fd AM |
1496 | |
1497 | static const struct bfd_elf_special_section * | |
4aef7643 | 1498 | ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
7f4d3958 | 1499 | { |
b35d266b | 1500 | const struct bfd_elf_special_section *ssect; |
551b43fd AM |
1501 | |
1502 | /* See if this is one of the special sections. */ | |
1503 | if (sec->name == NULL) | |
1504 | return NULL; | |
1505 | ||
1506 | ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections, | |
1507 | sec->use_rela_p); | |
1508 | if (ssect != NULL) | |
1509 | { | |
1510 | if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0) | |
1511 | ssect = &ppc_alt_plt; | |
1512 | return ssect; | |
1513 | } | |
1514 | ||
1515 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
1516 | } | |
25dbc73a AM |
1517 | \f |
1518 | /* Very simple linked list structure for recording apuinfo values. */ | |
1519 | typedef struct apuinfo_list | |
1520 | { | |
1521 | struct apuinfo_list *next; | |
1522 | unsigned long value; | |
1523 | } | |
1524 | apuinfo_list; | |
e656e369 | 1525 | |
25dbc73a | 1526 | static apuinfo_list *head; |
f2faa800 | 1527 | static bfd_boolean apuinfo_set; |
deaaf2f3 | 1528 | |
25dbc73a AM |
1529 | static void |
1530 | apuinfo_list_init (void) | |
1531 | { | |
1532 | head = NULL; | |
f2faa800 | 1533 | apuinfo_set = FALSE; |
25dbc73a | 1534 | } |
9abc968f | 1535 | |
25dbc73a AM |
1536 | static void |
1537 | apuinfo_list_add (unsigned long value) | |
1538 | { | |
1539 | apuinfo_list *entry = head; | |
deaaf2f3 | 1540 | |
25dbc73a AM |
1541 | while (entry != NULL) |
1542 | { | |
1543 | if (entry->value == value) | |
1544 | return; | |
1545 | entry = entry->next; | |
1546 | } | |
b4a38de6 | 1547 | |
25dbc73a AM |
1548 | entry = bfd_malloc (sizeof (* entry)); |
1549 | if (entry == NULL) | |
1550 | return; | |
e656e369 | 1551 | |
25dbc73a AM |
1552 | entry->value = value; |
1553 | entry->next = head; | |
1554 | head = entry; | |
1555 | } | |
9abc968f | 1556 | |
25dbc73a AM |
1557 | static unsigned |
1558 | apuinfo_list_length (void) | |
1559 | { | |
1560 | apuinfo_list *entry; | |
1561 | unsigned long count; | |
9abc968f | 1562 | |
25dbc73a AM |
1563 | for (entry = head, count = 0; |
1564 | entry; | |
1565 | entry = entry->next) | |
1566 | ++ count; | |
e656e369 | 1567 | |
25dbc73a AM |
1568 | return count; |
1569 | } | |
eea6121a | 1570 | |
25dbc73a AM |
1571 | static inline unsigned long |
1572 | apuinfo_list_element (unsigned long number) | |
1573 | { | |
1574 | apuinfo_list * entry; | |
e656e369 | 1575 | |
25dbc73a AM |
1576 | for (entry = head; |
1577 | entry && number --; | |
1578 | entry = entry->next) | |
1579 | ; | |
252b5132 | 1580 | |
25dbc73a AM |
1581 | return entry ? entry->value : 0; |
1582 | } | |
1583 | ||
1584 | static void | |
1585 | apuinfo_list_finish (void) | |
1586 | { | |
1587 | apuinfo_list *entry; | |
1588 | ||
1589 | for (entry = head; entry;) | |
252b5132 | 1590 | { |
25dbc73a AM |
1591 | apuinfo_list *next = entry->next; |
1592 | free (entry); | |
1593 | entry = next; | |
1594 | } | |
9abc968f | 1595 | |
25dbc73a AM |
1596 | head = NULL; |
1597 | } | |
9abc968f | 1598 | |
25dbc73a AM |
1599 | /* Scan the input BFDs and create a linked list of |
1600 | the APUinfo values that will need to be emitted. */ | |
9abc968f | 1601 | |
25dbc73a AM |
1602 | static void |
1603 | ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) | |
1604 | { | |
1605 | bfd *ibfd; | |
1606 | asection *asec; | |
deddc40b NS |
1607 | char *buffer = NULL; |
1608 | bfd_size_type largest_input_size = 0; | |
25dbc73a | 1609 | unsigned i; |
25dbc73a AM |
1610 | unsigned long length; |
1611 | const char *error_message = NULL; | |
9abc968f | 1612 | |
25dbc73a AM |
1613 | if (link_info == NULL) |
1614 | return; | |
9abc968f | 1615 | |
25dbc73a | 1616 | apuinfo_list_init (); |
252b5132 | 1617 | |
25dbc73a | 1618 | /* Read in the input sections contents. */ |
c72f2fb2 | 1619 | for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next) |
252b5132 | 1620 | { |
25dbc73a | 1621 | unsigned long datum; |
252b5132 | 1622 | |
25dbc73a AM |
1623 | asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); |
1624 | if (asec == NULL) | |
1625 | continue; | |
252b5132 | 1626 | |
695344c0 | 1627 | /* xgettext:c-format */ |
871b3ab2 | 1628 | error_message = _("corrupt %s section in %pB"); |
25dbc73a | 1629 | length = asec->size; |
deddc40b NS |
1630 | if (length < 20) |
1631 | goto fail; | |
1632 | ||
f2faa800 | 1633 | apuinfo_set = TRUE; |
deddc40b | 1634 | if (largest_input_size < asec->size) |
25dbc73a | 1635 | { |
deddc40b NS |
1636 | if (buffer) |
1637 | free (buffer); | |
1638 | largest_input_size = asec->size; | |
1639 | buffer = bfd_malloc (largest_input_size); | |
1640 | if (!buffer) | |
1641 | return; | |
25dbc73a | 1642 | } |
5b914448 | 1643 | |
25dbc73a | 1644 | if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 |
deddc40b | 1645 | || (bfd_bread (buffer, length, ibfd) != length)) |
25dbc73a | 1646 | { |
695344c0 | 1647 | /* xgettext:c-format */ |
871b3ab2 | 1648 | error_message = _("unable to read in %s section from %pB"); |
25dbc73a AM |
1649 | goto fail; |
1650 | } | |
252b5132 | 1651 | |
25dbc73a AM |
1652 | /* Verify the contents of the header. Note - we have to |
1653 | extract the values this way in order to allow for a | |
1654 | host whose endian-ness is different from the target. */ | |
deddc40b | 1655 | datum = bfd_get_32 (ibfd, buffer); |
25dbc73a AM |
1656 | if (datum != sizeof APUINFO_LABEL) |
1657 | goto fail; | |
252b5132 | 1658 | |
deddc40b | 1659 | datum = bfd_get_32 (ibfd, buffer + 8); |
25dbc73a AM |
1660 | if (datum != 0x2) |
1661 | goto fail; | |
252b5132 | 1662 | |
deddc40b | 1663 | if (strcmp (buffer + 12, APUINFO_LABEL) != 0) |
25dbc73a | 1664 | goto fail; |
252b5132 | 1665 | |
25dbc73a | 1666 | /* Get the number of bytes used for apuinfo entries. */ |
deddc40b | 1667 | datum = bfd_get_32 (ibfd, buffer + 4); |
25dbc73a AM |
1668 | if (datum + 20 != length) |
1669 | goto fail; | |
1670 | ||
25dbc73a AM |
1671 | /* Scan the apuinfo section, building a list of apuinfo numbers. */ |
1672 | for (i = 0; i < datum; i += 4) | |
deddc40b | 1673 | apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i)); |
252b5132 RH |
1674 | } |
1675 | ||
25dbc73a | 1676 | error_message = NULL; |
252b5132 | 1677 | |
f2faa800 | 1678 | if (apuinfo_set) |
deddc40b | 1679 | { |
f2faa800 NS |
1680 | /* Compute the size of the output section. */ |
1681 | unsigned num_entries = apuinfo_list_length (); | |
5b914448 | 1682 | |
deddc40b NS |
1683 | /* Set the output section size, if it exists. */ |
1684 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); | |
f2faa800 | 1685 | |
fd361982 | 1686 | if (asec && !bfd_set_section_size (asec, 20 + num_entries * 4)) |
deddc40b NS |
1687 | { |
1688 | ibfd = abfd; | |
695344c0 | 1689 | /* xgettext:c-format */ |
871b3ab2 | 1690 | error_message = _("warning: unable to set size of %s section in %pB"); |
deddc40b NS |
1691 | } |
1692 | } | |
25dbc73a AM |
1693 | |
1694 | fail: | |
deddc40b NS |
1695 | if (buffer) |
1696 | free (buffer); | |
25dbc73a AM |
1697 | |
1698 | if (error_message) | |
cd9af601 | 1699 | _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd); |
25dbc73a | 1700 | } |
252b5132 | 1701 | |
25dbc73a AM |
1702 | /* Prevent the output section from accumulating the input sections' |
1703 | contents. We have already stored this in our linked list structure. */ | |
252b5132 | 1704 | |
25dbc73a AM |
1705 | static bfd_boolean |
1706 | ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, | |
c7b8f16e | 1707 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED, |
25dbc73a AM |
1708 | asection *asec, |
1709 | bfd_byte *contents ATTRIBUTE_UNUSED) | |
1710 | { | |
f2faa800 | 1711 | return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0; |
252b5132 RH |
1712 | } |
1713 | ||
25dbc73a AM |
1714 | /* Finally we can generate the output section. */ |
1715 | ||
1716 | static void | |
cc364be6 | 1717 | ppc_final_write_processing (bfd *abfd) |
7619e7c7 | 1718 | { |
25dbc73a AM |
1719 | bfd_byte *buffer; |
1720 | asection *asec; | |
1721 | unsigned i; | |
1722 | unsigned num_entries; | |
1723 | bfd_size_type length; | |
7619e7c7 | 1724 | |
25dbc73a AM |
1725 | asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); |
1726 | if (asec == NULL) | |
1727 | return; | |
1728 | ||
f2faa800 | 1729 | if (!apuinfo_set) |
25dbc73a AM |
1730 | return; |
1731 | ||
1732 | length = asec->size; | |
1733 | if (length < 20) | |
1734 | return; | |
1735 | ||
1736 | buffer = bfd_malloc (length); | |
1737 | if (buffer == NULL) | |
7619e7c7 | 1738 | { |
4eca0228 | 1739 | _bfd_error_handler |
cf97bcb0 | 1740 | (_("failed to allocate space for new APUinfo section")); |
25dbc73a | 1741 | return; |
7619e7c7 | 1742 | } |
7619e7c7 | 1743 | |
25dbc73a AM |
1744 | /* Create the apuinfo header. */ |
1745 | num_entries = apuinfo_list_length (); | |
1746 | bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); | |
1747 | bfd_put_32 (abfd, num_entries * 4, buffer + 4); | |
1748 | bfd_put_32 (abfd, 0x2, buffer + 8); | |
1749 | strcpy ((char *) buffer + 12, APUINFO_LABEL); | |
feee612b | 1750 | |
25dbc73a AM |
1751 | length = 20; |
1752 | for (i = 0; i < num_entries; i++) | |
feee612b | 1753 | { |
25dbc73a AM |
1754 | bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); |
1755 | length += 4; | |
feee612b | 1756 | } |
feee612b | 1757 | |
25dbc73a | 1758 | if (length != asec->size) |
cf97bcb0 | 1759 | _bfd_error_handler (_("failed to compute new APUinfo section")); |
252b5132 | 1760 | |
25dbc73a | 1761 | if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) |
cf97bcb0 | 1762 | _bfd_error_handler (_("failed to install new APUinfo section")); |
252b5132 | 1763 | |
25dbc73a AM |
1764 | free (buffer); |
1765 | ||
1766 | apuinfo_list_finish (); | |
252b5132 | 1767 | } |
06f44071 | 1768 | |
cc364be6 AM |
1769 | static bfd_boolean |
1770 | ppc_elf_final_write_processing (bfd *abfd) | |
06f44071 | 1771 | { |
cc364be6 AM |
1772 | ppc_final_write_processing (abfd); |
1773 | return _bfd_elf_final_write_processing (abfd); | |
06f44071 | 1774 | } |
25dbc73a | 1775 | \f |
7382d32a | 1776 | static bfd_boolean |
c6dd29ce | 1777 | is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) |
7382d32a | 1778 | { |
407aa07c | 1779 | bfd_byte buf[4 * 4]; |
7382d32a | 1780 | |
9e390558 | 1781 | if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf)) |
7382d32a AM |
1782 | return FALSE; |
1783 | ||
c6dd29ce AM |
1784 | return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 |
1785 | && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 | |
407aa07c AM |
1786 | && bfd_get_32 (abfd, buf + 8) == MTCTR_11 |
1787 | && bfd_get_32 (abfd, buf + 12) == BCTR); | |
7382d32a AM |
1788 | } |
1789 | ||
468392fb AM |
1790 | static bfd_boolean |
1791 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
1792 | { | |
1793 | bfd_vma vma = *(bfd_vma *) ptr; | |
1794 | return ((section->flags & SEC_ALLOC) != 0 | |
1795 | && section->vma <= vma | |
1796 | && vma < section->vma + section->size); | |
1797 | } | |
1798 | ||
1799 | static long | |
1800 | ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, | |
1801 | long dynsymcount, asymbol **dynsyms, | |
1802 | asymbol **ret) | |
1803 | { | |
1804 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
1805 | asection *plt, *relplt, *dynamic, *glink; | |
1806 | bfd_vma glink_vma = 0; | |
1807 | bfd_vma resolv_vma = 0; | |
9e390558 | 1808 | bfd_vma stub_off; |
468392fb AM |
1809 | asymbol *s; |
1810 | arelent *p; | |
9ad9b810 | 1811 | size_t count, i, stub_delta; |
468392fb AM |
1812 | size_t size; |
1813 | char *names; | |
1814 | bfd_byte buf[4]; | |
1815 | ||
1816 | *ret = NULL; | |
1817 | ||
1818 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
1819 | return 0; | |
1820 | ||
1821 | if (dynsymcount <= 0) | |
1822 | return 0; | |
1823 | ||
1824 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); | |
1825 | if (relplt == NULL) | |
1826 | return 0; | |
1827 | ||
1828 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
1829 | if (plt == NULL) | |
1830 | return 0; | |
1831 | ||
1832 | /* Call common code to handle old-style executable PLTs. */ | |
1833 | if (elf_section_flags (plt) & SHF_EXECINSTR) | |
1834 | return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms, | |
1835 | dynsymcount, dynsyms, ret); | |
1836 | ||
1837 | /* If this object was prelinked, the prelinker stored the address | |
1838 | of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */ | |
1839 | dynamic = bfd_get_section_by_name (abfd, ".dynamic"); | |
1840 | if (dynamic != NULL) | |
1841 | { | |
1842 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
1843 | size_t extdynsize; | |
1844 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
1845 | ||
1846 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
1847 | return -1; | |
1848 | ||
1849 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1850 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1851 | ||
1852 | extdyn = dynbuf; | |
1853 | extdynend = extdyn + dynamic->size; | |
1854 | for (; extdyn < extdynend; extdyn += extdynsize) | |
1855 | { | |
1856 | Elf_Internal_Dyn dyn; | |
1857 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
1858 | ||
1859 | if (dyn.d_tag == DT_NULL) | |
1860 | break; | |
1861 | ||
1862 | if (dyn.d_tag == DT_PPC_GOT) | |
1863 | { | |
1864 | unsigned int g_o_t = dyn.d_un.d_val; | |
1865 | asection *got = bfd_get_section_by_name (abfd, ".got"); | |
1866 | if (got != NULL | |
1867 | && bfd_get_section_contents (abfd, got, buf, | |
1868 | g_o_t - got->vma + 4, 4)) | |
1869 | glink_vma = bfd_get_32 (abfd, buf); | |
1870 | break; | |
1871 | } | |
1872 | } | |
1873 | free (dynbuf); | |
1874 | } | |
1875 | ||
1876 | /* Otherwise we read the first plt entry. */ | |
1877 | if (glink_vma == 0) | |
1878 | { | |
1879 | if (bfd_get_section_contents (abfd, plt, buf, 0, 4)) | |
1880 | glink_vma = bfd_get_32 (abfd, buf); | |
1881 | } | |
1882 | ||
1883 | if (glink_vma == 0) | |
1884 | return 0; | |
1885 | ||
1886 | /* The .glink section usually does not survive the final | |
1887 | link; search for the section (usually .text) where the | |
1888 | glink stubs now reside. */ | |
1889 | glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma); | |
1890 | if (glink == NULL) | |
1891 | return 0; | |
1892 | ||
1893 | /* Determine glink PLT resolver by reading the relative branch | |
1894 | from the first glink stub. */ | |
1895 | if (bfd_get_section_contents (abfd, glink, buf, | |
1896 | glink_vma - glink->vma, 4)) | |
1897 | { | |
1898 | unsigned int insn = bfd_get_32 (abfd, buf); | |
1899 | ||
1900 | /* The first glink stub may either branch to the resolver ... */ | |
1901 | insn ^= B; | |
1902 | if ((insn & ~0x3fffffc) == 0) | |
1903 | resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000; | |
1904 | ||
1905 | /* ... or fall through a bunch of NOPs. */ | |
1906 | else if ((insn ^ B ^ NOP) == 0) | |
1907 | for (i = 4; | |
1908 | bfd_get_section_contents (abfd, glink, buf, | |
1909 | glink_vma - glink->vma + i, 4); | |
1910 | i += 4) | |
1911 | if (bfd_get_32 (abfd, buf) != NOP) | |
1912 | { | |
1913 | resolv_vma = glink_vma + i; | |
1914 | break; | |
1915 | } | |
1916 | } | |
1917 | ||
7382d32a | 1918 | count = relplt->size / sizeof (Elf32_External_Rela); |
7382d32a AM |
1919 | /* If the stubs are those for -shared/-pie then we might have |
1920 | multiple stubs for each plt entry. If that is the case then | |
1921 | there is no way to associate stubs with their plt entries short | |
9e390558 AM |
1922 | of figuring out the GOT pointer value used in the stub. |
1923 | The offsets tested here need to cover all possible values of | |
1924 | GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */ | |
1925 | stub_off = glink_vma - glink->vma; | |
1926 | for (stub_delta = 16; stub_delta <= 32; stub_delta += 8) | |
1927 | if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta)) | |
1928 | break; | |
1929 | if (stub_delta > 32) | |
7382d32a AM |
1930 | return 0; |
1931 | ||
468392fb AM |
1932 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
1933 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
1934 | return -1; | |
1935 | ||
468392fb AM |
1936 | size = count * sizeof (asymbol); |
1937 | p = relplt->relocation; | |
1938 | for (i = 0; i < count; i++, p++) | |
e054468f AM |
1939 | { |
1940 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
1941 | if (p->addend != 0) | |
1942 | size += sizeof ("+0x") - 1 + 8; | |
1943 | } | |
468392fb AM |
1944 | |
1945 | size += sizeof (asymbol) + sizeof ("__glink"); | |
1946 | ||
1947 | if (resolv_vma) | |
1948 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
1949 | ||
1950 | s = *ret = bfd_malloc (size); | |
1951 | if (s == NULL) | |
1952 | return -1; | |
1953 | ||
9e390558 | 1954 | stub_off = glink_vma - glink->vma; |
468392fb | 1955 | names = (char *) (s + count + 1 + (resolv_vma != 0)); |
1079403c AM |
1956 | p = relplt->relocation + count - 1; |
1957 | for (i = 0; i < count; i++) | |
468392fb AM |
1958 | { |
1959 | size_t len; | |
1960 | ||
9e390558 AM |
1961 | stub_off -= stub_delta; |
1962 | if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) | |
1963 | stub_off -= 32; | |
468392fb AM |
1964 | *s = **p->sym_ptr_ptr; |
1965 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
1966 | we are defining a symbol, ensure one of them is set. */ | |
1967 | if ((s->flags & BSF_LOCAL) == 0) | |
1968 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 1969 | s->flags |= BSF_SYNTHETIC; |
468392fb | 1970 | s->section = glink; |
9e390558 | 1971 | s->value = stub_off; |
468392fb AM |
1972 | s->name = names; |
1973 | s->udata.p = NULL; | |
1974 | len = strlen ((*p->sym_ptr_ptr)->name); | |
1975 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
1976 | names += len; | |
e054468f AM |
1977 | if (p->addend != 0) |
1978 | { | |
1979 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
1980 | names += sizeof ("+0x") - 1; | |
1981 | bfd_sprintf_vma (abfd, names, p->addend); | |
1982 | names += strlen (names); | |
1983 | } | |
468392fb AM |
1984 | memcpy (names, "@plt", sizeof ("@plt")); |
1985 | names += sizeof ("@plt"); | |
1986 | ++s; | |
1079403c | 1987 | --p; |
468392fb AM |
1988 | } |
1989 | ||
1990 | /* Add a symbol at the start of the glink branch table. */ | |
86a4952b | 1991 | memset (s, 0, sizeof *s); |
468392fb | 1992 | s->the_bfd = abfd; |
6ba2a415 | 1993 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
1994 | s->section = glink; |
1995 | s->value = glink_vma - glink->vma; | |
1996 | s->name = names; | |
1997 | memcpy (names, "__glink", sizeof ("__glink")); | |
1998 | names += sizeof ("__glink"); | |
1999 | s++; | |
2000 | count++; | |
2001 | ||
2002 | if (resolv_vma) | |
2003 | { | |
2004 | /* Add a symbol for the glink PLT resolver. */ | |
86a4952b | 2005 | memset (s, 0, sizeof *s); |
468392fb | 2006 | s->the_bfd = abfd; |
6ba2a415 | 2007 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2008 | s->section = glink; |
2009 | s->value = resolv_vma - glink->vma; | |
2010 | s->name = names; | |
2011 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
2012 | names += sizeof ("__glink_PLTresolve"); | |
2013 | s++; | |
2014 | count++; | |
2015 | } | |
2016 | ||
2017 | return count; | |
2018 | } | |
2019 | \f | |
25dbc73a AM |
2020 | /* The following functions are specific to the ELF linker, while |
2021 | functions above are used generally. They appear in this file more | |
2022 | or less in the order in which they are called. eg. | |
2023 | ppc_elf_check_relocs is called early in the link process, | |
2024 | ppc_elf_finish_dynamic_sections is one of the last functions | |
2025 | called. */ | |
252b5132 | 2026 | |
a6aa5195 | 2027 | /* Track PLT entries needed for a given symbol. We might need more |
a877a2b6 | 2028 | than one glink entry per symbol when generating a pic binary. */ |
a6aa5195 AM |
2029 | struct plt_entry |
2030 | { | |
2031 | struct plt_entry *next; | |
2032 | ||
2033 | /* -fPIC uses multiple GOT sections, one per file, called ".got2". | |
2034 | This field stores the offset into .got2 used to initialise the | |
a877a2b6 AM |
2035 | GOT pointer reg. It will always be at least 32768. (Current |
2036 | gcc always uses an offset of 32768, but ld -r will pack .got2 | |
2037 | sections together resulting in larger offsets). */ | |
a6aa5195 AM |
2038 | bfd_vma addend; |
2039 | ||
2040 | /* The .got2 section. */ | |
2041 | asection *sec; | |
2042 | ||
2043 | /* PLT refcount or offset. */ | |
2044 | union | |
2045 | { | |
2046 | bfd_signed_vma refcount; | |
2047 | bfd_vma offset; | |
2048 | } plt; | |
2049 | ||
2050 | /* .glink stub offset. */ | |
2051 | bfd_vma glink_offset; | |
2052 | }; | |
2053 | ||
7c8bbca5 AM |
2054 | /* Of those relocs that might be copied as dynamic relocs, this |
2055 | function selects those that must be copied when linking a shared | |
2056 | library or PIE, even when the symbol is local. */ | |
252b5132 | 2057 | |
1d483afe AM |
2058 | static int |
2059 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2060 | enum elf_ppc_reloc_type r_type) | |
2061 | { | |
2062 | switch (r_type) | |
2063 | { | |
2064 | default: | |
7c8bbca5 AM |
2065 | /* Only relative relocs can be resolved when the object load |
2066 | address isn't fixed. DTPREL32 is excluded because the | |
2067 | dynamic linker needs to differentiate global dynamic from | |
2068 | local dynamic __tls_index pairs when PPC_OPT_TLS is set. */ | |
1d483afe AM |
2069 | return 1; |
2070 | ||
2071 | case R_PPC_REL24: | |
2072 | case R_PPC_REL14: | |
2073 | case R_PPC_REL14_BRTAKEN: | |
2074 | case R_PPC_REL14_BRNTAKEN: | |
2075 | case R_PPC_REL32: | |
2076 | return 0; | |
2077 | ||
2078 | case R_PPC_TPREL32: | |
2079 | case R_PPC_TPREL16: | |
2080 | case R_PPC_TPREL16_LO: | |
2081 | case R_PPC_TPREL16_HI: | |
2082 | case R_PPC_TPREL16_HA: | |
7c8bbca5 AM |
2083 | /* These relocations are relative but in a shared library the |
2084 | linker doesn't know the thread pointer base. */ | |
2085 | return bfd_link_dll (info); | |
1d483afe AM |
2086 | } |
2087 | } | |
252b5132 | 2088 | |
25dbc73a AM |
2089 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
2090 | copying dynamic variables from a shared lib into an app's dynbss | |
2091 | section, and instead use a dynamic relocation to point into the | |
2092 | shared lib. */ | |
2093 | #define ELIMINATE_COPY_RELOCS 1 | |
252b5132 | 2094 | |
f95f8542 AM |
2095 | /* Used to track dynamic relocations for local symbols. */ |
2096 | struct ppc_dyn_relocs | |
2097 | { | |
2098 | struct ppc_dyn_relocs *next; | |
2099 | ||
2100 | /* The input section of the reloc. */ | |
2101 | asection *sec; | |
2102 | ||
2103 | /* Total number of relocs copied for the input section. */ | |
2104 | unsigned int count : 31; | |
2105 | ||
2106 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
2107 | unsigned int ifunc : 1; | |
2108 | }; | |
2109 | ||
25dbc73a | 2110 | /* PPC ELF linker hash entry. */ |
252b5132 | 2111 | |
25dbc73a AM |
2112 | struct ppc_elf_link_hash_entry |
2113 | { | |
2114 | struct elf_link_hash_entry elf; | |
252b5132 | 2115 | |
25dbc73a AM |
2116 | /* If this symbol is used in the linker created sections, the processor |
2117 | specific backend uses this field to map the field into the offset | |
2118 | from the beginning of the section. */ | |
2119 | elf_linker_section_pointers_t *linker_section_pointer; | |
252b5132 | 2120 | |
25dbc73a | 2121 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 2122 | struct elf_dyn_relocs *dyn_relocs; |
252b5132 | 2123 | |
37da22e5 AM |
2124 | /* Contexts in which symbol is used in the GOT. |
2125 | Bits are or'd into the mask as the corresponding relocs are | |
2126 | encountered during check_relocs, with TLS_TLS being set when any | |
2127 | of the other TLS bits are set. tls_optimize clears bits when | |
2128 | optimizing to indicate the corresponding GOT entry type is not | |
2129 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 2130 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
2131 | These flags are also kept for local symbols. */ |
2132 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
2133 | #define TLS_GD 2 /* GD reloc. */ | |
2134 | #define TLS_LD 4 /* LD reloc. */ | |
2135 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
2136 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
2137 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 2138 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
bac3c8c5 | 2139 | unsigned char tls_mask; |
4dc4a9a5 | 2140 | |
37da22e5 AM |
2141 | /* The above field is also used to mark function symbols. In which |
2142 | case TLS_TLS will be 0. */ | |
2143 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 2144 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 AM |
2145 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
2146 | ||
4dc4a9a5 DJ |
2147 | /* Nonzero if we have seen a small data relocation referring to this |
2148 | symbol. */ | |
d3e454b9 AM |
2149 | unsigned char has_sda_refs : 1; |
2150 | ||
2151 | /* Flag use of given relocations. */ | |
2152 | unsigned char has_addr16_ha : 1; | |
2153 | unsigned char has_addr16_lo : 1; | |
25dbc73a | 2154 | }; |
252b5132 | 2155 | |
25dbc73a AM |
2156 | #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) |
2157 | ||
2158 | /* PPC ELF linker hash table. */ | |
2159 | ||
2160 | struct ppc_elf_link_hash_table | |
2161 | { | |
2162 | struct elf_link_hash_table elf; | |
2163 | ||
5446cbdf AM |
2164 | /* Various options passed from the linker. */ |
2165 | struct ppc_elf_params *params; | |
2166 | ||
25dbc73a | 2167 | /* Short-cuts to get to dynamic linker sections. */ |
d7128ce4 | 2168 | asection *glink; |
25dbc73a AM |
2169 | asection *dynsbss; |
2170 | asection *relsbss; | |
c9a2f333 | 2171 | elf_linker_section_t sdata[2]; |
25dbc73a | 2172 | asection *sbss; |
6177242a | 2173 | asection *glink_eh_frame; |
2d7ad24e AM |
2174 | asection *pltlocal; |
2175 | asection *relpltlocal; | |
25dbc73a | 2176 | |
016687f8 AM |
2177 | /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */ |
2178 | asection *srelplt2; | |
2179 | ||
1d483afe | 2180 | /* Shortcut to __tls_get_addr. */ |
25dbc73a | 2181 | struct elf_link_hash_entry *tls_get_addr; |
252b5132 | 2182 | |
016687f8 AM |
2183 | /* The bfd that forced an old-style PLT. */ |
2184 | bfd *old_bfd; | |
5b914448 | 2185 | |
25dbc73a AM |
2186 | /* TLS local dynamic got entry handling. */ |
2187 | union { | |
2188 | bfd_signed_vma refcount; | |
2189 | bfd_vma offset; | |
2190 | } tlsld_got; | |
252b5132 | 2191 | |
c6dd29ce | 2192 | /* Offset of branch table to PltResolve function in glink. */ |
d7128ce4 AM |
2193 | bfd_vma glink_pltresolve; |
2194 | ||
3b36f7e6 AM |
2195 | /* Size of reserved GOT entries. */ |
2196 | unsigned int got_header_size; | |
2197 | /* Non-zero if allocating the header left a gap. */ | |
2198 | unsigned int got_gap; | |
2199 | ||
4a3dc543 RS |
2200 | /* The type of PLT we have chosen to use. */ |
2201 | enum ppc_elf_plt_type plt_type; | |
2202 | ||
9d8504b1 | 2203 | /* True if the target system is VxWorks. */ |
016687f8 | 2204 | unsigned int is_vxworks:1; |
9d8504b1 | 2205 | |
82e66161 AM |
2206 | /* Whether there exist local gnu indirect function resolvers, |
2207 | referenced by dynamic relocations. */ | |
2208 | unsigned int local_ifunc_resolver:1; | |
2209 | unsigned int maybe_local_ifunc_resolver:1; | |
2210 | ||
9a23f96e AM |
2211 | /* Set if tls optimization is enabled. */ |
2212 | unsigned int do_tls_opt:1; | |
2213 | ||
3e04d765 AM |
2214 | /* Set if inline plt calls should be converted to direct calls. */ |
2215 | unsigned int can_convert_all_inline_plt:1; | |
2216 | ||
9d8504b1 PB |
2217 | /* The size of PLT entries. */ |
2218 | int plt_entry_size; | |
2219 | /* The distance between adjacent PLT slots. */ | |
2220 | int plt_slot_size; | |
2221 | /* The size of the first PLT entry. */ | |
2222 | int plt_initial_entry_size; | |
016687f8 | 2223 | |
87d72d41 AM |
2224 | /* Small local sym cache. */ |
2225 | struct sym_cache sym_cache; | |
25dbc73a | 2226 | }; |
252b5132 | 2227 | |
94caa966 AM |
2228 | /* Rename some of the generic section flags to better document how they |
2229 | are used for ppc32. The flags are only valid for ppc32 elf objects. */ | |
2230 | ||
2231 | /* Nonzero if this section has TLS related relocations. */ | |
2232 | #define has_tls_reloc sec_flg0 | |
2233 | ||
9737e8af AM |
2234 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
2235 | relocs. */ | |
2236 | #define nomark_tls_get_addr sec_flg1 | |
94caa966 | 2237 | |
3e04d765 AM |
2238 | /* Flag set when PLTCALL relocs are detected. */ |
2239 | #define has_pltcall sec_flg2 | |
2240 | ||
25dbc73a | 2241 | /* Get the PPC ELF linker hash table from a link_info structure. */ |
252b5132 | 2242 | |
25dbc73a | 2243 | #define ppc_elf_hash_table(p) \ |
4dfe6ac6 NC |
2244 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
2245 | == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 2246 | |
25dbc73a | 2247 | /* Create an entry in a PPC ELF linker hash table. */ |
252b5132 | 2248 | |
25dbc73a AM |
2249 | static struct bfd_hash_entry * |
2250 | ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
2251 | struct bfd_hash_table *table, | |
2252 | const char *string) | |
252b5132 | 2253 | { |
25dbc73a AM |
2254 | /* Allocate the structure if it has not already been allocated by a |
2255 | subclass. */ | |
2256 | if (entry == NULL) | |
2257 | { | |
2258 | entry = bfd_hash_allocate (table, | |
2259 | sizeof (struct ppc_elf_link_hash_entry)); | |
2260 | if (entry == NULL) | |
2261 | return entry; | |
2262 | } | |
252b5132 | 2263 | |
25dbc73a AM |
2264 | /* Call the allocation method of the superclass. */ |
2265 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2266 | if (entry != NULL) | |
2267 | { | |
2268 | ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; | |
2269 | ppc_elf_hash_entry (entry)->dyn_relocs = NULL; | |
2270 | ppc_elf_hash_entry (entry)->tls_mask = 0; | |
5240d94d | 2271 | ppc_elf_hash_entry (entry)->has_sda_refs = 0; |
25dbc73a | 2272 | } |
252b5132 | 2273 | |
25dbc73a | 2274 | return entry; |
252b5132 | 2275 | } |
3dab13f6 | 2276 | |
25dbc73a | 2277 | /* Create a PPC ELF linker hash table. */ |
3dab13f6 | 2278 | |
25dbc73a AM |
2279 | static struct bfd_link_hash_table * |
2280 | ppc_elf_link_hash_table_create (bfd *abfd) | |
3dab13f6 | 2281 | { |
25dbc73a | 2282 | struct ppc_elf_link_hash_table *ret; |
76e7a751 | 2283 | static struct ppc_elf_params default_params |
407aa07c | 2284 | = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 }; |
3dab13f6 | 2285 | |
25dbc73a AM |
2286 | ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); |
2287 | if (ret == NULL) | |
2288 | return NULL; | |
3dab13f6 | 2289 | |
66eb6687 AM |
2290 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
2291 | ppc_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
2292 | sizeof (struct ppc_elf_link_hash_entry), |
2293 | PPC32_ELF_DATA)) | |
3dab13f6 | 2294 | { |
25dbc73a AM |
2295 | free (ret); |
2296 | return NULL; | |
2297 | } | |
58111eb7 | 2298 | |
a6aa5195 AM |
2299 | ret->elf.init_plt_refcount.refcount = 0; |
2300 | ret->elf.init_plt_refcount.glist = NULL; | |
2301 | ret->elf.init_plt_offset.offset = 0; | |
2302 | ret->elf.init_plt_offset.glist = NULL; | |
2303 | ||
db434ba0 AM |
2304 | ret->params = &default_params; |
2305 | ||
c9a2f333 AM |
2306 | ret->sdata[0].name = ".sdata"; |
2307 | ret->sdata[0].sym_name = "_SDA_BASE_"; | |
2308 | ret->sdata[0].bss_name = ".sbss"; | |
2309 | ||
2310 | ret->sdata[1].name = ".sdata2"; | |
2311 | ret->sdata[1].sym_name = "_SDA2_BASE_"; | |
2312 | ret->sdata[1].bss_name = ".sbss2"; | |
2313 | ||
9d8504b1 PB |
2314 | ret->plt_entry_size = 12; |
2315 | ret->plt_slot_size = 8; | |
2316 | ret->plt_initial_entry_size = 72; | |
9d8504b1 | 2317 | |
25dbc73a AM |
2318 | return &ret->elf.root; |
2319 | } | |
3dab13f6 | 2320 | |
5446cbdf AM |
2321 | /* Hook linker params into hash table. */ |
2322 | ||
2323 | void | |
2324 | ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params) | |
2325 | { | |
2326 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
2327 | ||
2328 | if (htab) | |
2329 | htab->params = params; | |
76e7a751 | 2330 | params->pagesize_p2 = bfd_log2 (params->pagesize); |
5446cbdf AM |
2331 | } |
2332 | ||
9d8504b1 | 2333 | /* Create .got and the related sections. */ |
3dab13f6 | 2334 | |
25dbc73a AM |
2335 | static bfd_boolean |
2336 | ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) | |
2337 | { | |
2338 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2339 | |
25dbc73a AM |
2340 | if (!_bfd_elf_create_got_section (abfd, info)) |
2341 | return FALSE; | |
3dab13f6 | 2342 | |
25dbc73a | 2343 | htab = ppc_elf_hash_table (info); |
ce558b89 | 2344 | if (!htab->is_vxworks) |
9d8504b1 PB |
2345 | { |
2346 | /* The powerpc .got has a blrl instruction in it. Mark it | |
2347 | executable. */ | |
ce558b89 AM |
2348 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS |
2349 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
fd361982 | 2350 | if (!bfd_set_section_flags (htab->elf.sgot, flags)) |
9d8504b1 PB |
2351 | return FALSE; |
2352 | } | |
3dab13f6 | 2353 | |
25dbc73a AM |
2354 | return TRUE; |
2355 | } | |
3dab13f6 | 2356 | |
93d1b056 AM |
2357 | /* Create a special linker section, used for R_PPC_EMB_SDAI16 and |
2358 | R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata | |
2359 | and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */ | |
2360 | ||
2361 | static bfd_boolean | |
2362 | ppc_elf_create_linker_section (bfd *abfd, | |
2363 | struct bfd_link_info *info, | |
2364 | flagword flags, | |
2365 | elf_linker_section_t *lsect) | |
2366 | { | |
2367 | asection *s; | |
2368 | ||
2369 | flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2370 | | SEC_LINKER_CREATED); | |
2371 | ||
2372 | s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags); | |
2373 | if (s == NULL) | |
2374 | return FALSE; | |
2375 | lsect->section = s; | |
2376 | ||
2377 | /* Define the sym on the first section of this name. */ | |
2378 | s = bfd_get_section_by_name (abfd, lsect->name); | |
2379 | ||
2380 | lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name); | |
2381 | if (lsect->sym == NULL) | |
2382 | return FALSE; | |
2383 | lsect->sym->root.u.def.value = 0x8000; | |
2384 | return TRUE; | |
2385 | } | |
2386 | ||
e054468f AM |
2387 | static bfd_boolean |
2388 | ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info) | |
2389 | { | |
2390 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
2391 | asection *s; | |
2392 | flagword flags; | |
691d2e9a | 2393 | int p2align; |
e054468f AM |
2394 | |
2395 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS | |
2396 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2397 | s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags); | |
2398 | htab->glink = s; | |
691d2e9a AM |
2399 | p2align = htab->params->ppc476_workaround ? 6 : 4; |
2400 | if (p2align < htab->params->plt_stub_align) | |
2401 | p2align = htab->params->plt_stub_align; | |
e054468f | 2402 | if (s == NULL |
fd361982 | 2403 | || !bfd_set_section_alignment (s, p2align)) |
e054468f AM |
2404 | return FALSE; |
2405 | ||
6177242a AM |
2406 | if (!info->no_ld_generated_unwind_info) |
2407 | { | |
2408 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
2409 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2410 | s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags); | |
2411 | htab->glink_eh_frame = s; | |
2412 | if (s == NULL | |
fd361982 | 2413 | || !bfd_set_section_alignment (s, 2)) |
6177242a AM |
2414 | return FALSE; |
2415 | } | |
2416 | ||
e054468f AM |
2417 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
2418 | s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags); | |
ce558b89 | 2419 | htab->elf.iplt = s; |
e054468f | 2420 | if (s == NULL |
fd361982 | 2421 | || !bfd_set_section_alignment (s, 4)) |
e054468f AM |
2422 | return FALSE; |
2423 | ||
2424 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
2425 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 2426 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags); |
ce558b89 | 2427 | htab->elf.irelplt = s; |
e054468f | 2428 | if (s == NULL |
fd361982 | 2429 | || ! bfd_set_section_alignment (s, 2)) |
e054468f | 2430 | return FALSE; |
93d1b056 | 2431 | |
2d7ad24e AM |
2432 | /* Local plt entries. */ |
2433 | flags = (SEC_ALLOC | SEC_LOAD | |
2434 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2435 | htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt", | |
2436 | flags); | |
2437 | if (htab->pltlocal == NULL | |
fd361982 | 2438 | || !bfd_set_section_alignment (htab->pltlocal, 2)) |
2d7ad24e AM |
2439 | return FALSE; |
2440 | ||
2441 | if (bfd_link_pic (info)) | |
2442 | { | |
2443 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
2444 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2445 | htab->relpltlocal | |
2446 | = bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags); | |
2447 | if (htab->relpltlocal == NULL | |
fd361982 | 2448 | || !bfd_set_section_alignment (htab->relpltlocal, 2)) |
2d7ad24e AM |
2449 | return FALSE; |
2450 | } | |
2451 | ||
93d1b056 AM |
2452 | if (!ppc_elf_create_linker_section (abfd, info, 0, |
2453 | &htab->sdata[0])) | |
2454 | return FALSE; | |
2455 | ||
2456 | if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY, | |
2457 | &htab->sdata[1])) | |
2458 | return FALSE; | |
2459 | ||
e054468f AM |
2460 | return TRUE; |
2461 | } | |
2462 | ||
25dbc73a AM |
2463 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
2464 | to output sections (just like _bfd_elf_create_dynamic_sections has | |
2465 | to create .dynbss and .rela.bss). */ | |
3dab13f6 | 2466 | |
25dbc73a AM |
2467 | static bfd_boolean |
2468 | ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2469 | { | |
2470 | struct ppc_elf_link_hash_table *htab; | |
2471 | asection *s; | |
2472 | flagword flags; | |
3dab13f6 | 2473 | |
25dbc73a | 2474 | htab = ppc_elf_hash_table (info); |
3dab13f6 | 2475 | |
ce558b89 | 2476 | if (htab->elf.sgot == NULL |
25dbc73a | 2477 | && !ppc_elf_create_got (abfd, info)) |
3dab13f6 AM |
2478 | return FALSE; |
2479 | ||
25dbc73a AM |
2480 | if (!_bfd_elf_create_dynamic_sections (abfd, info)) |
2481 | return FALSE; | |
3dab13f6 | 2482 | |
e054468f AM |
2483 | if (htab->glink == NULL |
2484 | && !ppc_elf_create_glink (abfd, info)) | |
d7128ce4 | 2485 | return FALSE; |
3dab13f6 | 2486 | |
14b2f831 AM |
2487 | s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", |
2488 | SEC_ALLOC | SEC_LINKER_CREATED); | |
3b36f7e6 | 2489 | htab->dynsbss = s; |
3496cb2a | 2490 | if (s == NULL) |
25dbc73a | 2491 | return FALSE; |
3dab13f6 | 2492 | |
0e1862bb | 2493 | if (! bfd_link_pic (info)) |
25dbc73a | 2494 | { |
e054468f AM |
2495 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS |
2496 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
14b2f831 | 2497 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags); |
3b36f7e6 | 2498 | htab->relsbss = s; |
25dbc73a | 2499 | if (s == NULL |
fd361982 | 2500 | || !bfd_set_section_alignment (s, 2)) |
25dbc73a AM |
2501 | return FALSE; |
2502 | } | |
3dab13f6 | 2503 | |
711de32c RS |
2504 | if (htab->is_vxworks |
2505 | && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) | |
2506 | return FALSE; | |
9d8504b1 | 2507 | |
ce558b89 | 2508 | s = htab->elf.splt; |
3b36f7e6 | 2509 | flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED; |
4a3dc543 RS |
2510 | if (htab->plt_type == PLT_VXWORKS) |
2511 | /* The VxWorks PLT is a loaded section with contents. */ | |
2512 | flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY; | |
fd361982 | 2513 | return bfd_set_section_flags (s, flags); |
25dbc73a | 2514 | } |
3dab13f6 | 2515 | |
25dbc73a | 2516 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
58111eb7 | 2517 | |
25dbc73a | 2518 | static void |
fcfa13d2 | 2519 | ppc_elf_copy_indirect_symbol (struct bfd_link_info *info, |
25dbc73a AM |
2520 | struct elf_link_hash_entry *dir, |
2521 | struct elf_link_hash_entry *ind) | |
2522 | { | |
2523 | struct ppc_elf_link_hash_entry *edir, *eind; | |
3dab13f6 | 2524 | |
25dbc73a AM |
2525 | edir = (struct ppc_elf_link_hash_entry *) dir; |
2526 | eind = (struct ppc_elf_link_hash_entry *) ind; | |
3dab13f6 | 2527 | |
c79d6685 AM |
2528 | edir->tls_mask |= eind->tls_mask; |
2529 | edir->has_sda_refs |= eind->has_sda_refs; | |
2530 | ||
e81830c5 AM |
2531 | if (edir->elf.versioned != versioned_hidden) |
2532 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
c79d6685 AM |
2533 | edir->elf.ref_regular |= eind->elf.ref_regular; |
2534 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 2535 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
c79d6685 AM |
2536 | edir->elf.needs_plt |= eind->elf.needs_plt; |
2537 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
2538 | ||
287c7eaf AM |
2539 | /* If we were called to copy over info for a weak sym, that's all. */ |
2540 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
2541 | return; | |
2542 | ||
25dbc73a AM |
2543 | if (eind->dyn_relocs != NULL) |
2544 | { | |
2545 | if (edir->dyn_relocs != NULL) | |
3dab13f6 | 2546 | { |
6061a67d AM |
2547 | struct elf_dyn_relocs **pp; |
2548 | struct elf_dyn_relocs *p; | |
3dab13f6 | 2549 | |
fcfa13d2 | 2550 | /* Add reloc counts against the indirect sym to the direct sym |
25dbc73a AM |
2551 | list. Merge any entries against the same section. */ |
2552 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3dab13f6 | 2553 | { |
6061a67d | 2554 | struct elf_dyn_relocs *q; |
25dbc73a AM |
2555 | |
2556 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2557 | if (q->sec == p->sec) | |
2558 | { | |
2559 | q->pc_count += p->pc_count; | |
2560 | q->count += p->count; | |
2561 | *pp = p->next; | |
2562 | break; | |
2563 | } | |
2564 | if (q == NULL) | |
2565 | pp = &p->next; | |
3dab13f6 | 2566 | } |
25dbc73a | 2567 | *pp = edir->dyn_relocs; |
3dab13f6 | 2568 | } |
25dbc73a AM |
2569 | |
2570 | edir->dyn_relocs = eind->dyn_relocs; | |
2571 | eind->dyn_relocs = NULL; | |
3dab13f6 | 2572 | } |
3dab13f6 | 2573 | |
a6aa5195 AM |
2574 | /* Copy over the GOT refcount entries that we may have already seen to |
2575 | the symbol which just became indirect. */ | |
fcfa13d2 AM |
2576 | edir->elf.got.refcount += eind->elf.got.refcount; |
2577 | eind->elf.got.refcount = 0; | |
a6aa5195 AM |
2578 | |
2579 | /* And plt entries. */ | |
2580 | if (eind->elf.plt.plist != NULL) | |
2581 | { | |
2582 | if (edir->elf.plt.plist != NULL) | |
2583 | { | |
2584 | struct plt_entry **entp; | |
2585 | struct plt_entry *ent; | |
2586 | ||
2587 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
2588 | { | |
2589 | struct plt_entry *dent; | |
2590 | ||
2591 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
2592 | if (dent->sec == ent->sec && dent->addend == ent->addend) | |
2593 | { | |
2594 | dent->plt.refcount += ent->plt.refcount; | |
2595 | *entp = ent->next; | |
2596 | break; | |
2597 | } | |
2598 | if (dent == NULL) | |
2599 | entp = &ent->next; | |
2600 | } | |
2601 | *entp = edir->elf.plt.plist; | |
2602 | } | |
2603 | ||
2604 | edir->elf.plt.plist = eind->elf.plt.plist; | |
2605 | eind->elf.plt.plist = NULL; | |
2606 | } | |
2607 | ||
fcfa13d2 | 2608 | if (eind->elf.dynindx != -1) |
25dbc73a | 2609 | { |
fcfa13d2 AM |
2610 | if (edir->elf.dynindx != -1) |
2611 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
2612 | edir->elf.dynstr_index); | |
a6aa5195 AM |
2613 | edir->elf.dynindx = eind->elf.dynindx; |
2614 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
2615 | eind->elf.dynindx = -1; | |
2616 | eind->elf.dynstr_index = 0; | |
25dbc73a | 2617 | } |
25dbc73a | 2618 | } |
3dab13f6 | 2619 | |
25dbc73a AM |
2620 | /* Hook called by the linker routine which adds symbols from an object |
2621 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
58111eb7 | 2622 | |
25dbc73a AM |
2623 | static bfd_boolean |
2624 | ppc_elf_add_symbol_hook (bfd *abfd, | |
2625 | struct bfd_link_info *info, | |
2626 | Elf_Internal_Sym *sym, | |
2627 | const char **namep ATTRIBUTE_UNUSED, | |
2628 | flagword *flagsp ATTRIBUTE_UNUSED, | |
2629 | asection **secp, | |
2630 | bfd_vma *valp) | |
2631 | { | |
2632 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 2633 | && !bfd_link_relocatable (info) |
0c8d6e5c AM |
2634 | && is_ppc_elf (info->output_bfd) |
2635 | && sym->st_size <= elf_gp_size (abfd)) | |
25dbc73a AM |
2636 | { |
2637 | /* Common symbols less than or equal to -G nn bytes are automatically | |
2638 | put into .sbss. */ | |
2639 | struct ppc_elf_link_hash_table *htab; | |
3dab13f6 | 2640 | |
25dbc73a AM |
2641 | htab = ppc_elf_hash_table (info); |
2642 | if (htab->sbss == NULL) | |
2643 | { | |
644285ef | 2644 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; |
3dab13f6 | 2645 | |
644285ef AM |
2646 | if (!htab->elf.dynobj) |
2647 | htab->elf.dynobj = abfd; | |
2648 | ||
3496cb2a L |
2649 | htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj, |
2650 | ".sbss", | |
2651 | flags); | |
2652 | if (htab->sbss == NULL) | |
25dbc73a | 2653 | return FALSE; |
3dab13f6 | 2654 | } |
3dab13f6 | 2655 | |
25dbc73a AM |
2656 | *secp = htab->sbss; |
2657 | *valp = sym->st_size; | |
2658 | } | |
3dab13f6 | 2659 | |
25dbc73a | 2660 | return TRUE; |
3dab13f6 AM |
2661 | } |
2662 | \f | |
25dbc73a AM |
2663 | /* Find a linker generated pointer with a given addend and type. */ |
2664 | ||
2665 | static elf_linker_section_pointers_t * | |
2666 | elf_find_pointer_linker_section | |
2667 | (elf_linker_section_pointers_t *linker_pointers, | |
2668 | bfd_vma addend, | |
2669 | elf_linker_section_t *lsect) | |
252b5132 | 2670 | { |
25dbc73a AM |
2671 | for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) |
2672 | if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) | |
2673 | return linker_pointers; | |
252b5132 | 2674 | |
25dbc73a AM |
2675 | return NULL; |
2676 | } | |
2677 | ||
2678 | /* Allocate a pointer to live in a linker created section. */ | |
2679 | ||
2680 | static bfd_boolean | |
93d1b056 AM |
2681 | elf_allocate_pointer_linker_section (bfd *abfd, |
2682 | elf_linker_section_t *lsect, | |
2683 | struct elf_link_hash_entry *h, | |
2684 | const Elf_Internal_Rela *rel) | |
25dbc73a AM |
2685 | { |
2686 | elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; | |
2687 | elf_linker_section_pointers_t *linker_section_ptr; | |
2688 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
2689 | bfd_size_type amt; | |
2690 | ||
2691 | BFD_ASSERT (lsect != NULL); | |
2692 | ||
2693 | /* Is this a global symbol? */ | |
2694 | if (h != NULL) | |
2695 | { | |
2696 | struct ppc_elf_link_hash_entry *eh; | |
2697 | ||
2698 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2699 | eh = (struct ppc_elf_link_hash_entry *) h; | |
2700 | if (elf_find_pointer_linker_section (eh->linker_section_pointer, | |
2701 | rel->r_addend, | |
2702 | lsect)) | |
2703 | return TRUE; | |
2704 | ||
2705 | ptr_linker_section_ptr = &eh->linker_section_pointer; | |
25dbc73a AM |
2706 | } |
2707 | else | |
2708 | { | |
0c8d6e5c | 2709 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 2710 | |
25dbc73a AM |
2711 | /* Allocation of a pointer to a local symbol. */ |
2712 | elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); | |
2713 | ||
2714 | /* Allocate a table to hold the local symbols if first time. */ | |
2715 | if (!ptr) | |
2716 | { | |
0ffa91dd | 2717 | unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info; |
25dbc73a AM |
2718 | |
2719 | amt = num_symbols; | |
2720 | amt *= sizeof (elf_linker_section_pointers_t *); | |
2721 | ptr = bfd_zalloc (abfd, amt); | |
2722 | ||
2723 | if (!ptr) | |
2724 | return FALSE; | |
2725 | ||
2726 | elf_local_ptr_offsets (abfd) = ptr; | |
2727 | } | |
2728 | ||
2729 | /* Has this symbol already been allocated? If so, our work is done. */ | |
2730 | if (elf_find_pointer_linker_section (ptr[r_symndx], | |
2731 | rel->r_addend, | |
2732 | lsect)) | |
2733 | return TRUE; | |
252b5132 | 2734 | |
25dbc73a | 2735 | ptr_linker_section_ptr = &ptr[r_symndx]; |
25dbc73a | 2736 | } |
41fcb14e | 2737 | |
25dbc73a AM |
2738 | /* Allocate space for a pointer in the linker section, and allocate |
2739 | a new pointer record from internal memory. */ | |
2740 | BFD_ASSERT (ptr_linker_section_ptr != NULL); | |
2741 | amt = sizeof (elf_linker_section_pointers_t); | |
2742 | linker_section_ptr = bfd_alloc (abfd, amt); | |
41fcb14e | 2743 | |
25dbc73a | 2744 | if (!linker_section_ptr) |
7619e7c7 | 2745 | return FALSE; |
41fcb14e | 2746 | |
25dbc73a AM |
2747 | linker_section_ptr->next = *ptr_linker_section_ptr; |
2748 | linker_section_ptr->addend = rel->r_addend; | |
2749 | linker_section_ptr->lsect = lsect; | |
25dbc73a | 2750 | *ptr_linker_section_ptr = linker_section_ptr; |
41fcb14e | 2751 | |
fd361982 | 2752 | if (!bfd_set_section_alignment (lsect->section, 2)) |
93d1b056 | 2753 | return FALSE; |
25dbc73a AM |
2754 | linker_section_ptr->offset = lsect->section->size; |
2755 | lsect->section->size += 4; | |
7619e7c7 | 2756 | |
25dbc73a AM |
2757 | #ifdef DEBUG |
2758 | fprintf (stderr, | |
2759 | "Create pointer in linker section %s, offset = %ld, section size = %ld\n", | |
2760 | lsect->name, (long) linker_section_ptr->offset, | |
2761 | (long) lsect->section->size); | |
2762 | #endif | |
7619e7c7 AM |
2763 | |
2764 | return TRUE; | |
41fcb14e AM |
2765 | } |
2766 | ||
e054468f | 2767 | static struct plt_entry ** |
25dbc73a AM |
2768 | update_local_sym_info (bfd *abfd, |
2769 | Elf_Internal_Shdr *symtab_hdr, | |
2770 | unsigned long r_symndx, | |
2771 | int tls_type) | |
252b5132 | 2772 | { |
25dbc73a | 2773 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); |
e054468f | 2774 | struct plt_entry **local_plt; |
bac3c8c5 | 2775 | unsigned char *local_got_tls_masks; |
252b5132 | 2776 | |
25dbc73a | 2777 | if (local_got_refcounts == NULL) |
252b5132 | 2778 | { |
25dbc73a AM |
2779 | bfd_size_type size = symtab_hdr->sh_info; |
2780 | ||
e054468f AM |
2781 | size *= (sizeof (*local_got_refcounts) |
2782 | + sizeof (*local_plt) | |
2783 | + sizeof (*local_got_tls_masks)); | |
25dbc73a AM |
2784 | local_got_refcounts = bfd_zalloc (abfd, size); |
2785 | if (local_got_refcounts == NULL) | |
e054468f | 2786 | return NULL; |
25dbc73a | 2787 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 2788 | } |
41fcb14e | 2789 | |
e054468f | 2790 | local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info); |
bac3c8c5 | 2791 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 AM |
2792 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
2793 | if ((tls_type & NON_GOT) == 0) | |
e054468f AM |
2794 | local_got_refcounts[r_symndx] += 1; |
2795 | return local_plt + r_symndx; | |
25dbc73a | 2796 | } |
41fcb14e | 2797 | |
a6aa5195 | 2798 | static bfd_boolean |
3ec01793 | 2799 | update_plt_info (bfd *abfd, struct plt_entry **plist, |
a6aa5195 AM |
2800 | asection *sec, bfd_vma addend) |
2801 | { | |
2802 | struct plt_entry *ent; | |
2803 | ||
32af9f6e AM |
2804 | if (addend < 32768) |
2805 | sec = NULL; | |
3ec01793 | 2806 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
2807 | if (ent->sec == sec && ent->addend == addend) |
2808 | break; | |
2809 | if (ent == NULL) | |
2810 | { | |
986f0783 | 2811 | size_t amt = sizeof (*ent); |
a6aa5195 AM |
2812 | ent = bfd_alloc (abfd, amt); |
2813 | if (ent == NULL) | |
2814 | return FALSE; | |
3ec01793 | 2815 | ent->next = *plist; |
a6aa5195 AM |
2816 | ent->sec = sec; |
2817 | ent->addend = addend; | |
2818 | ent->plt.refcount = 0; | |
3ec01793 | 2819 | *plist = ent; |
a6aa5195 AM |
2820 | } |
2821 | ent->plt.refcount += 1; | |
2822 | return TRUE; | |
2823 | } | |
2824 | ||
2825 | static struct plt_entry * | |
3ec01793 | 2826 | find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend) |
a6aa5195 AM |
2827 | { |
2828 | struct plt_entry *ent; | |
2829 | ||
2830 | if (addend < 32768) | |
2831 | sec = NULL; | |
3ec01793 | 2832 | for (ent = *plist; ent != NULL; ent = ent->next) |
a6aa5195 AM |
2833 | if (ent->sec == sec && ent->addend == addend) |
2834 | break; | |
2835 | return ent; | |
2836 | } | |
2837 | ||
e054468f AM |
2838 | static bfd_boolean |
2839 | is_branch_reloc (enum elf_ppc_reloc_type r_type) | |
2840 | { | |
2841 | return (r_type == R_PPC_PLTREL24 | |
2842 | || r_type == R_PPC_LOCAL24PC | |
2843 | || r_type == R_PPC_REL24 | |
2844 | || r_type == R_PPC_REL14 | |
2845 | || r_type == R_PPC_REL14_BRTAKEN | |
2846 | || r_type == R_PPC_REL14_BRNTAKEN | |
2847 | || r_type == R_PPC_ADDR24 | |
2848 | || r_type == R_PPC_ADDR14 | |
2849 | || r_type == R_PPC_ADDR14_BRTAKEN | |
dfdaec14 AJ |
2850 | || r_type == R_PPC_ADDR14_BRNTAKEN |
2851 | || r_type == R_PPC_VLE_REL24); | |
e054468f AM |
2852 | } |
2853 | ||
23cedd1d AM |
2854 | /* Relocs on inline plt call sequence insns prior to the call. */ |
2855 | ||
2856 | static bfd_boolean | |
2857 | is_plt_seq_reloc (enum elf_ppc_reloc_type r_type) | |
2858 | { | |
2859 | return (r_type == R_PPC_PLT16_HA | |
2860 | || r_type == R_PPC_PLT16_HI | |
2861 | || r_type == R_PPC_PLT16_LO | |
2862 | || r_type == R_PPC_PLTSEQ); | |
2863 | } | |
2864 | ||
25dbc73a AM |
2865 | static void |
2866 | bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) | |
2867 | { | |
4eca0228 | 2868 | _bfd_error_handler |
695344c0 | 2869 | /* xgettext:c-format */ |
871b3ab2 | 2870 | (_("%pB: relocation %s cannot be used when making a shared object"), |
25dbc73a AM |
2871 | abfd, |
2872 | ppc_elf_howto_table[r_type]->name); | |
2873 | bfd_set_error (bfd_error_bad_value); | |
252b5132 RH |
2874 | } |
2875 | ||
25dbc73a AM |
2876 | /* Look through the relocs for a section during the first phase, and |
2877 | allocate space in the global offset table or procedure linkage | |
2878 | table. */ | |
252b5132 | 2879 | |
b34976b6 | 2880 | static bfd_boolean |
25dbc73a AM |
2881 | ppc_elf_check_relocs (bfd *abfd, |
2882 | struct bfd_link_info *info, | |
2883 | asection *sec, | |
2884 | const Elf_Internal_Rela *relocs) | |
252b5132 | 2885 | { |
7619e7c7 | 2886 | struct ppc_elf_link_hash_table *htab; |
25dbc73a AM |
2887 | Elf_Internal_Shdr *symtab_hdr; |
2888 | struct elf_link_hash_entry **sym_hashes; | |
2889 | const Elf_Internal_Rela *rel; | |
2890 | const Elf_Internal_Rela *rel_end; | |
a6aa5195 | 2891 | asection *got2, *sreloc; |
727fc41e | 2892 | struct elf_link_hash_entry *tga; |
25dbc73a | 2893 | |
0e1862bb | 2894 | if (bfd_link_relocatable (info)) |
25dbc73a | 2895 | return TRUE; |
252b5132 | 2896 | |
c87b5a93 AM |
2897 | /* Don't do anything special with non-loaded, non-alloced sections. |
2898 | In particular, any relocs in such sections should not affect GOT | |
2899 | and PLT reference counting (ie. we don't allow them to create GOT | |
2900 | or PLT entries), there's no possibility or desire to optimize TLS | |
2901 | relocs, and there's not much point in propagating relocs to shared | |
2902 | libs that the dynamic linker won't relocate. */ | |
2903 | if ((sec->flags & SEC_ALLOC) == 0) | |
2904 | return TRUE; | |
2905 | ||
252b5132 | 2906 | #ifdef DEBUG |
871b3ab2 | 2907 | _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB", |
25dbc73a | 2908 | sec, abfd); |
252b5132 RH |
2909 | #endif |
2910 | ||
0c8d6e5c | 2911 | BFD_ASSERT (is_ppc_elf (abfd)); |
0ffa91dd | 2912 | |
25dbc73a AM |
2913 | /* Initialize howto table if not already done. */ |
2914 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) | |
2915 | ppc_elf_howto_init (); | |
2916 | ||
7619e7c7 | 2917 | htab = ppc_elf_hash_table (info); |
25f23106 AM |
2918 | if (htab->glink == NULL) |
2919 | { | |
2920 | if (htab->elf.dynobj == NULL) | |
2921 | htab->elf.dynobj = abfd; | |
2922 | if (!ppc_elf_create_glink (htab->elf.dynobj, info)) | |
2923 | return FALSE; | |
2924 | } | |
727fc41e AM |
2925 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
2926 | FALSE, FALSE, TRUE); | |
0ffa91dd | 2927 | symtab_hdr = &elf_symtab_hdr (abfd); |
25dbc73a | 2928 | sym_hashes = elf_sym_hashes (abfd); |
a6aa5195 | 2929 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
25dbc73a AM |
2930 | sreloc = NULL; |
2931 | ||
2932 | rel_end = relocs + sec->reloc_count; | |
2933 | for (rel = relocs; rel < rel_end; rel++) | |
2934 | { | |
2935 | unsigned long r_symndx; | |
2936 | enum elf_ppc_reloc_type r_type; | |
2937 | struct elf_link_hash_entry *h; | |
727fc41e | 2938 | int tls_type; |
cbf95972 | 2939 | struct plt_entry **ifunc; |
2d7ad24e AM |
2940 | struct plt_entry **pltent; |
2941 | bfd_vma addend; | |
25dbc73a AM |
2942 | |
2943 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2944 | if (r_symndx < symtab_hdr->sh_info) | |
2945 | h = NULL; | |
2946 | else | |
973a3492 L |
2947 | { |
2948 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2949 | while (h->root.type == bfd_link_hash_indirect | |
2950 | || h->root.type == bfd_link_hash_warning) | |
2951 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2952 | } | |
25dbc73a AM |
2953 | |
2954 | /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. | |
2955 | This shows up in particular in an R_PPC_ADDR32 in the eabi | |
2956 | startup code. */ | |
3b36f7e6 | 2957 | if (h != NULL |
ce558b89 | 2958 | && htab->elf.sgot == NULL |
3b36f7e6 | 2959 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
252b5132 | 2960 | { |
3b36f7e6 AM |
2961 | if (htab->elf.dynobj == NULL) |
2962 | htab->elf.dynobj = abfd; | |
2963 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
2964 | return FALSE; | |
2965 | BFD_ASSERT (h == htab->elf.hgot); | |
25dbc73a | 2966 | } |
252b5132 | 2967 | |
727fc41e | 2968 | tls_type = 0; |
de972ffa | 2969 | r_type = ELF32_R_TYPE (rel->r_info); |
cbf95972 | 2970 | ifunc = NULL; |
06a162cf | 2971 | if (h == NULL && !htab->is_vxworks) |
e054468f | 2972 | { |
06a162cf AM |
2973 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
2974 | abfd, r_symndx); | |
2975 | if (isym == NULL) | |
2976 | return FALSE; | |
2977 | ||
0bed072f | 2978 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
e054468f | 2979 | { |
0bed072f | 2980 | /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */ |
06a162cf | 2981 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
37da22e5 | 2982 | NON_GOT | PLT_IFUNC); |
06a162cf | 2983 | if (ifunc == NULL) |
e054468f AM |
2984 | return FALSE; |
2985 | ||
06a162cf AM |
2986 | /* STT_GNU_IFUNC symbols must have a PLT entry; |
2987 | In a non-pie executable even when there are | |
2988 | no plt calls. */ | |
0e1862bb | 2989 | if (!bfd_link_pic (info) |
08be3224 AM |
2990 | || is_branch_reloc (r_type) |
2991 | || r_type == R_PPC_PLT16_LO | |
2992 | || r_type == R_PPC_PLT16_HI | |
2993 | || r_type == R_PPC_PLT16_HA) | |
e054468f | 2994 | { |
2d7ad24e | 2995 | addend = 0; |
0bed072f | 2996 | if (r_type == R_PPC_PLTREL24) |
08be3224 AM |
2997 | ppc_elf_tdata (abfd)->makes_plt_call = 1; |
2998 | if (bfd_link_pic (info) | |
2999 | && (r_type == R_PPC_PLTREL24 | |
3000 | || r_type == R_PPC_PLT16_LO | |
3001 | || r_type == R_PPC_PLT16_HI | |
3002 | || r_type == R_PPC_PLT16_HA)) | |
3003 | addend = rel->r_addend; | |
0bed072f AM |
3004 | if (!update_plt_info (abfd, ifunc, got2, addend)) |
3005 | return FALSE; | |
e054468f AM |
3006 | } |
3007 | } | |
25f23106 AM |
3008 | } |
3009 | ||
de972ffa AM |
3010 | if (!htab->is_vxworks |
3011 | && is_branch_reloc (r_type) | |
3012 | && h != NULL | |
3013 | && h == tga) | |
25f23106 | 3014 | { |
de972ffa AM |
3015 | if (rel != relocs |
3016 | && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD | |
3017 | || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD)) | |
3018 | /* We have a new-style __tls_get_addr call with a marker | |
3019 | reloc. */ | |
3020 | ; | |
3021 | else | |
3022 | /* Mark this section as having an old-style call. */ | |
9737e8af | 3023 | sec->nomark_tls_get_addr = 1; |
e054468f | 3024 | } |
727fc41e | 3025 | |
25dbc73a AM |
3026 | switch (r_type) |
3027 | { | |
727fc41e AM |
3028 | case R_PPC_TLSGD: |
3029 | case R_PPC_TLSLD: | |
3030 | /* These special tls relocs tie a call to __tls_get_addr with | |
3031 | its parameter symbol. */ | |
37da22e5 AM |
3032 | if (h != NULL) |
3033 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; | |
3034 | else | |
3035 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
3036 | NON_GOT | TLS_TLS | TLS_MARK)) | |
3037 | return FALSE; | |
727fc41e AM |
3038 | break; |
3039 | ||
23cedd1d AM |
3040 | case R_PPC_PLTSEQ: |
3041 | break; | |
3042 | ||
25dbc73a AM |
3043 | case R_PPC_GOT_TLSLD16: |
3044 | case R_PPC_GOT_TLSLD16_LO: | |
3045 | case R_PPC_GOT_TLSLD16_HI: | |
3046 | case R_PPC_GOT_TLSLD16_HA: | |
25dbc73a AM |
3047 | tls_type = TLS_TLS | TLS_LD; |
3048 | goto dogottls; | |
252b5132 | 3049 | |
25dbc73a AM |
3050 | case R_PPC_GOT_TLSGD16: |
3051 | case R_PPC_GOT_TLSGD16_LO: | |
3052 | case R_PPC_GOT_TLSGD16_HI: | |
3053 | case R_PPC_GOT_TLSGD16_HA: | |
3054 | tls_type = TLS_TLS | TLS_GD; | |
3055 | goto dogottls; | |
3056 | ||
3057 | case R_PPC_GOT_TPREL16: | |
3058 | case R_PPC_GOT_TPREL16_LO: | |
3059 | case R_PPC_GOT_TPREL16_HI: | |
3060 | case R_PPC_GOT_TPREL16_HA: | |
7c8bbca5 | 3061 | if (bfd_link_dll (info)) |
25dbc73a AM |
3062 | info->flags |= DF_STATIC_TLS; |
3063 | tls_type = TLS_TLS | TLS_TPREL; | |
3064 | goto dogottls; | |
3065 | ||
3066 | case R_PPC_GOT_DTPREL16: | |
3067 | case R_PPC_GOT_DTPREL16_LO: | |
3068 | case R_PPC_GOT_DTPREL16_HI: | |
3069 | case R_PPC_GOT_DTPREL16_HA: | |
3070 | tls_type = TLS_TLS | TLS_DTPREL; | |
3071 | dogottls: | |
3072 | sec->has_tls_reloc = 1; | |
1a0670f3 | 3073 | /* Fall through. */ |
252b5132 | 3074 | |
25dbc73a AM |
3075 | /* GOT16 relocations */ |
3076 | case R_PPC_GOT16: | |
3077 | case R_PPC_GOT16_LO: | |
3078 | case R_PPC_GOT16_HI: | |
3079 | case R_PPC_GOT16_HA: | |
3080 | /* This symbol requires a global offset table entry. */ | |
ce558b89 | 3081 | if (htab->elf.sgot == NULL) |
25dbc73a AM |
3082 | { |
3083 | if (htab->elf.dynobj == NULL) | |
3084 | htab->elf.dynobj = abfd; | |
3085 | if (!ppc_elf_create_got (htab->elf.dynobj, info)) | |
3086 | return FALSE; | |
3087 | } | |
3088 | if (h != NULL) | |
3089 | { | |
3090 | h->got.refcount += 1; | |
3091 | ppc_elf_hash_entry (h)->tls_mask |= tls_type; | |
3092 | } | |
3093 | else | |
3094 | /* This is a global offset table entry for a local symbol. */ | |
3095 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) | |
3096 | return FALSE; | |
91e21fb7 AM |
3097 | |
3098 | /* We may also need a plt entry if the symbol turns out to be | |
3099 | an ifunc. */ | |
0e1862bb | 3100 | if (h != NULL && !bfd_link_pic (info)) |
91e21fb7 AM |
3101 | { |
3102 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
3103 | return FALSE; | |
3104 | } | |
25dbc73a | 3105 | break; |
252b5132 | 3106 | |
25dbc73a AM |
3107 | /* Indirect .sdata relocation. */ |
3108 | case R_PPC_EMB_SDAI16: | |
93d1b056 AM |
3109 | htab->sdata[0].sym->ref_regular = 1; |
3110 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0], | |
3111 | h, rel)) | |
25dbc73a | 3112 | return FALSE; |
046183de AM |
3113 | if (h != NULL) |
3114 | { | |
3115 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3116 | h->non_got_ref = TRUE; | |
3117 | } | |
25dbc73a | 3118 | break; |
252b5132 | 3119 | |
25dbc73a AM |
3120 | /* Indirect .sdata2 relocation. */ |
3121 | case R_PPC_EMB_SDA2I16: | |
c0d9f31d | 3122 | if (!bfd_link_executable (info)) |
25dbc73a AM |
3123 | { |
3124 | bad_shared_reloc (abfd, r_type); | |
3125 | return FALSE; | |
3126 | } | |
93d1b056 AM |
3127 | htab->sdata[1].sym->ref_regular = 1; |
3128 | if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1], | |
3129 | h, rel)) | |
25dbc73a | 3130 | return FALSE; |
046183de AM |
3131 | if (h != NULL) |
3132 | { | |
3133 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3134 | h->non_got_ref = TRUE; | |
3135 | } | |
25dbc73a | 3136 | break; |
252b5132 | 3137 | |
93d1b056 AM |
3138 | case R_PPC_SDAREL16: |
3139 | htab->sdata[0].sym->ref_regular = 1; | |
1a0670f3 | 3140 | /* Fall through. */ |
93d1b056 | 3141 | |
b9c361e0 JL |
3142 | case R_PPC_VLE_SDAREL_LO16A: |
3143 | case R_PPC_VLE_SDAREL_LO16D: | |
3144 | case R_PPC_VLE_SDAREL_HI16A: | |
3145 | case R_PPC_VLE_SDAREL_HI16D: | |
3146 | case R_PPC_VLE_SDAREL_HA16A: | |
3147 | case R_PPC_VLE_SDAREL_HA16D: | |
046183de AM |
3148 | if (h != NULL) |
3149 | { | |
3150 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3151 | h->non_got_ref = TRUE; | |
3152 | } | |
3153 | break; | |
3154 | ||
b9c361e0 JL |
3155 | case R_PPC_VLE_REL8: |
3156 | case R_PPC_VLE_REL15: | |
3157 | case R_PPC_VLE_REL24: | |
3158 | case R_PPC_VLE_LO16A: | |
3159 | case R_PPC_VLE_LO16D: | |
3160 | case R_PPC_VLE_HI16A: | |
3161 | case R_PPC_VLE_HI16D: | |
3162 | case R_PPC_VLE_HA16A: | |
3163 | case R_PPC_VLE_HA16D: | |
83eef883 | 3164 | case R_PPC_VLE_ADDR20: |
b9c361e0 JL |
3165 | break; |
3166 | ||
25dbc73a | 3167 | case R_PPC_EMB_SDA2REL: |
c0d9f31d | 3168 | if (!bfd_link_executable (info)) |
046183de AM |
3169 | { |
3170 | bad_shared_reloc (abfd, r_type); | |
3171 | return FALSE; | |
3172 | } | |
93d1b056 | 3173 | htab->sdata[1].sym->ref_regular = 1; |
046183de AM |
3174 | if (h != NULL) |
3175 | { | |
3176 | ppc_elf_hash_entry (h)->has_sda_refs = TRUE; | |
3177 | h->non_got_ref = TRUE; | |
3178 | } | |
3179 | break; | |
3180 | ||
b9c361e0 JL |
3181 | case R_PPC_VLE_SDA21_LO: |
3182 | case R_PPC_VLE_SDA21: | |
25dbc73a AM |
3183 | case R_PPC_EMB_SDA21: |
3184 | case R_PPC_EMB_RELSDA: | |
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: | |
4dc4a9a5 | 3197 | if (h != NULL) |
046183de | 3198 | h->non_got_ref = TRUE; |
25dbc73a | 3199 | break; |
252b5132 | 3200 | |
25dbc73a | 3201 | case R_PPC_PLTREL24: |
de972ffa | 3202 | if (h == NULL) |
6d78d0b9 | 3203 | break; |
08be3224 | 3204 | ppc_elf_tdata (abfd)->makes_plt_call = 1; |
3e04d765 | 3205 | goto pltentry; |
08be3224 | 3206 | |
23cedd1d | 3207 | case R_PPC_PLTCALL: |
3e04d765 AM |
3208 | sec->has_pltcall = 1; |
3209 | /* Fall through. */ | |
3210 | ||
6d78d0b9 | 3211 | case R_PPC_PLT32: |
25dbc73a AM |
3212 | case R_PPC_PLTREL32: |
3213 | case R_PPC_PLT16_LO: | |
3214 | case R_PPC_PLT16_HI: | |
3215 | case R_PPC_PLT16_HA: | |
3e04d765 | 3216 | pltentry: |
25dbc73a AM |
3217 | #ifdef DEBUG |
3218 | fprintf (stderr, "Reloc requires a PLT entry\n"); | |
3219 | #endif | |
cbf95972 | 3220 | /* This symbol requires a procedure linkage table entry. */ |
25dbc73a AM |
3221 | if (h == NULL) |
3222 | { | |
2d7ad24e AM |
3223 | pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
3224 | NON_GOT | PLT_KEEP); | |
3225 | if (pltent == NULL) | |
3226 | return FALSE; | |
25dbc73a | 3227 | } |
a6aa5195 AM |
3228 | else |
3229 | { | |
2d7ad24e AM |
3230 | if (r_type != R_PPC_PLTREL24) |
3231 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
a6aa5195 | 3232 | h->needs_plt = 1; |
2d7ad24e | 3233 | pltent = &h->plt.plist; |
a6aa5195 | 3234 | } |
2d7ad24e AM |
3235 | addend = 0; |
3236 | if (bfd_link_pic (info) | |
3237 | && (r_type == R_PPC_PLTREL24 | |
3238 | || r_type == R_PPC_PLT16_LO | |
3239 | || r_type == R_PPC_PLT16_HI | |
3240 | || r_type == R_PPC_PLT16_HA)) | |
3241 | addend = rel->r_addend; | |
3242 | if (!update_plt_info (abfd, pltent, got2, addend)) | |
3243 | return FALSE; | |
25dbc73a | 3244 | break; |
ee05f2fe | 3245 | |
25dbc73a AM |
3246 | /* The following relocations don't need to propagate the |
3247 | relocation if linking a shared object since they are | |
3248 | section relative. */ | |
3249 | case R_PPC_SECTOFF: | |
3250 | case R_PPC_SECTOFF_LO: | |
3251 | case R_PPC_SECTOFF_HI: | |
3252 | case R_PPC_SECTOFF_HA: | |
3253 | case R_PPC_DTPREL16: | |
3254 | case R_PPC_DTPREL16_LO: | |
3255 | case R_PPC_DTPREL16_HI: | |
3256 | case R_PPC_DTPREL16_HA: | |
3257 | case R_PPC_TOC16: | |
3258 | break; | |
252b5132 | 3259 | |
d7128ce4 AM |
3260 | case R_PPC_REL16: |
3261 | case R_PPC_REL16_LO: | |
3262 | case R_PPC_REL16_HI: | |
3263 | case R_PPC_REL16_HA: | |
a680de9a | 3264 | case R_PPC_REL16DX_HA: |
016687f8 | 3265 | ppc_elf_tdata (abfd)->has_rel16 = 1; |
d7128ce4 AM |
3266 | break; |
3267 | ||
a6aa5195 | 3268 | /* These are just markers. */ |
25dbc73a AM |
3269 | case R_PPC_TLS: |
3270 | case R_PPC_EMB_MRKREF: | |
3271 | case R_PPC_NONE: | |
3272 | case R_PPC_max: | |
32af9f6e AM |
3273 | case R_PPC_RELAX: |
3274 | case R_PPC_RELAX_PLT: | |
3275 | case R_PPC_RELAX_PLTREL24: | |
7ba71655 | 3276 | case R_PPC_16DX_HA: |
25dbc73a | 3277 | break; |
252b5132 | 3278 | |
25dbc73a AM |
3279 | /* These should only appear in dynamic objects. */ |
3280 | case R_PPC_COPY: | |
3281 | case R_PPC_GLOB_DAT: | |
3282 | case R_PPC_JMP_SLOT: | |
3283 | case R_PPC_RELATIVE: | |
e054468f | 3284 | case R_PPC_IRELATIVE: |
25dbc73a | 3285 | break; |
252b5132 | 3286 | |
25dbc73a AM |
3287 | /* These aren't handled yet. We'll report an error later. */ |
3288 | case R_PPC_ADDR30: | |
3289 | case R_PPC_EMB_RELSEC16: | |
3290 | case R_PPC_EMB_RELST_LO: | |
3291 | case R_PPC_EMB_RELST_HI: | |
3292 | case R_PPC_EMB_RELST_HA: | |
3293 | case R_PPC_EMB_BIT_FLD: | |
3294 | break; | |
252b5132 | 3295 | |
25dbc73a AM |
3296 | /* This refers only to functions defined in the shared library. */ |
3297 | case R_PPC_LOCAL24PC: | |
727fc41e | 3298 | if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET) |
016687f8 AM |
3299 | { |
3300 | htab->plt_type = PLT_OLD; | |
3301 | htab->old_bfd = abfd; | |
3302 | } | |
c7e17e05 AM |
3303 | if (h != NULL && h->type == STT_GNU_IFUNC) |
3304 | { | |
c7e17e05 AM |
3305 | h->needs_plt = 1; |
3306 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) | |
3307 | return FALSE; | |
3308 | } | |
25dbc73a | 3309 | break; |
252b5132 | 3310 | |
25dbc73a AM |
3311 | /* This relocation describes the C++ object vtable hierarchy. |
3312 | Reconstruct it for later use during GC. */ | |
3313 | case R_PPC_GNU_VTINHERIT: | |
3314 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
3315 | return FALSE; | |
3316 | break; | |
252b5132 | 3317 | |
25dbc73a AM |
3318 | /* This relocation describes which C++ vtable entries are actually |
3319 | used. Record for later use during GC. */ | |
3320 | case R_PPC_GNU_VTENTRY: | |
a0ea3a14 | 3321 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
25dbc73a AM |
3322 | return FALSE; |
3323 | break; | |
252b5132 | 3324 | |
7c8bbca5 | 3325 | /* We shouldn't really be seeing TPREL32. */ |
25dbc73a | 3326 | case R_PPC_TPREL32: |
1d483afe AM |
3327 | case R_PPC_TPREL16: |
3328 | case R_PPC_TPREL16_LO: | |
3329 | case R_PPC_TPREL16_HI: | |
3330 | case R_PPC_TPREL16_HA: | |
7c8bbca5 | 3331 | if (bfd_link_dll (info)) |
25dbc73a AM |
3332 | info->flags |= DF_STATIC_TLS; |
3333 | goto dodyn; | |
252b5132 | 3334 | |
25dbc73a AM |
3335 | /* Nor these. */ |
3336 | case R_PPC_DTPMOD32: | |
3337 | case R_PPC_DTPREL32: | |
3338 | goto dodyn; | |
252b5132 | 3339 | |
9edfd1af AM |
3340 | case R_PPC_REL32: |
3341 | if (h == NULL | |
3342 | && got2 != NULL | |
3343 | && (sec->flags & SEC_CODE) != 0 | |
0e1862bb | 3344 | && bfd_link_pic (info) |
4a3dc543 | 3345 | && htab->plt_type == PLT_UNSET) |
9edfd1af AM |
3346 | { |
3347 | /* Old -fPIC gcc code has .long LCTOC1-LCFx just before | |
3348 | the start of a function, which assembles to a REL32 | |
3349 | reference to .got2. If we detect one of these, then | |
3350 | force the old PLT layout because the linker cannot | |
3351 | reliably deduce the GOT pointer value needed for | |
3352 | PLT call stubs. */ | |
3353 | asection *s; | |
87d72d41 | 3354 | Elf_Internal_Sym *isym; |
9edfd1af | 3355 | |
87d72d41 AM |
3356 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3357 | abfd, r_symndx); | |
3358 | if (isym == NULL) | |
3359 | return FALSE; | |
3360 | ||
3361 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
9edfd1af | 3362 | if (s == got2) |
016687f8 AM |
3363 | { |
3364 | htab->plt_type = PLT_OLD; | |
3365 | htab->old_bfd = abfd; | |
3366 | } | |
9edfd1af | 3367 | } |
7123df0e | 3368 | if (h == NULL || h == htab->elf.hgot) |
fd38b44c | 3369 | break; |
625af618 AM |
3370 | /* fall through */ |
3371 | ||
3372 | case R_PPC_ADDR32: | |
3373 | case R_PPC_ADDR16: | |
3374 | case R_PPC_ADDR16_LO: | |
3375 | case R_PPC_ADDR16_HI: | |
3376 | case R_PPC_ADDR16_HA: | |
3377 | case R_PPC_UADDR32: | |
3378 | case R_PPC_UADDR16: | |
0e1862bb | 3379 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
3380 | { |
3381 | /* We may need a plt entry if the symbol turns out to be | |
3382 | a function defined in a dynamic object. */ | |
3ec01793 | 3383 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
625af618 AM |
3384 | return FALSE; |
3385 | ||
3386 | /* We may need a copy reloc too. */ | |
3387 | h->non_got_ref = 1; | |
3388 | h->pointer_equality_needed = 1; | |
d3e454b9 AM |
3389 | if (r_type == R_PPC_ADDR16_HA) |
3390 | ppc_elf_hash_entry (h)->has_addr16_ha = 1; | |
3391 | if (r_type == R_PPC_ADDR16_LO) | |
3392 | ppc_elf_hash_entry (h)->has_addr16_lo = 1; | |
625af618 AM |
3393 | } |
3394 | goto dodyn; | |
9edfd1af | 3395 | |
25dbc73a AM |
3396 | case R_PPC_REL24: |
3397 | case R_PPC_REL14: | |
3398 | case R_PPC_REL14_BRTAKEN: | |
3399 | case R_PPC_REL14_BRNTAKEN: | |
d7128ce4 | 3400 | if (h == NULL) |
25dbc73a | 3401 | break; |
7123df0e | 3402 | if (h == htab->elf.hgot) |
d7128ce4 | 3403 | { |
7123df0e | 3404 | if (htab->plt_type == PLT_UNSET) |
016687f8 AM |
3405 | { |
3406 | htab->plt_type = PLT_OLD; | |
3407 | htab->old_bfd = abfd; | |
3408 | } | |
d7128ce4 AM |
3409 | break; |
3410 | } | |
25dbc73a | 3411 | /* fall through */ |
ee05f2fe | 3412 | |
25dbc73a | 3413 | case R_PPC_ADDR24: |
25dbc73a AM |
3414 | case R_PPC_ADDR14: |
3415 | case R_PPC_ADDR14_BRTAKEN: | |
3416 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 3417 | if (h != NULL && !bfd_link_pic (info)) |
25dbc73a AM |
3418 | { |
3419 | /* We may need a plt entry if the symbol turns out to be | |
3420 | a function defined in a dynamic object. */ | |
e054468f | 3421 | h->needs_plt = 1; |
de972ffa | 3422 | if (!update_plt_info (abfd, &h->plt.plist, NULL, 0)) |
a6aa5195 | 3423 | return FALSE; |
625af618 | 3424 | break; |
25dbc73a | 3425 | } |
7619e7c7 | 3426 | |
25dbc73a AM |
3427 | dodyn: |
3428 | /* If we are creating a shared library, and this is a reloc | |
3429 | against a global symbol, or a non PC relative reloc | |
3430 | against a local symbol, then we need to copy the reloc | |
3431 | into the shared library. However, if we are linking with | |
3432 | -Bsymbolic, we do not need to copy a reloc against a | |
3433 | global symbol which is defined in an object we are | |
3434 | including in the link (i.e., DEF_REGULAR is set). At | |
3435 | this point we have not seen all the input files, so it is | |
3436 | possible that DEF_REGULAR is not set now but will be set | |
3437 | later (it is never cleared). In case of a weak definition, | |
3438 | DEF_REGULAR may be cleared later by a strong definition in | |
3439 | a shared library. We account for that possibility below by | |
3440 | storing information in the dyn_relocs field of the hash | |
3441 | table entry. A similar situation occurs when creating | |
3442 | shared libraries and symbol visibility changes render the | |
3443 | symbol local. | |
7619e7c7 | 3444 | |
25dbc73a AM |
3445 | If on the other hand, we are creating an executable, we |
3446 | may need to keep relocations for symbols satisfied by a | |
3447 | dynamic library if we manage to avoid copy relocs for the | |
3448 | symbol. */ | |
0e1862bb | 3449 | if ((bfd_link_pic (info) |
1d483afe | 3450 | && (must_be_dyn_reloc (info, r_type) |
25dbc73a | 3451 | || (h != NULL |
198f1157 | 3452 | && (!SYMBOLIC_BIND (info, h) |
25dbc73a AM |
3453 | || h->root.type == bfd_link_hash_defweak |
3454 | || !h->def_regular)))) | |
3455 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 3456 | && !bfd_link_pic (info) |
25dbc73a AM |
3457 | && h != NULL |
3458 | && (h->root.type == bfd_link_hash_defweak | |
de972ffa | 3459 | || !h->def_regular))) |
25dbc73a | 3460 | { |
25dbc73a AM |
3461 | #ifdef DEBUG |
3462 | fprintf (stderr, | |
3463 | "ppc_elf_check_relocs needs to " | |
3464 | "create relocation for %s\n", | |
3465 | (h && h->root.root.string | |
3466 | ? h->root.root.string : "<unknown>")); | |
3467 | #endif | |
3468 | if (sreloc == NULL) | |
3469 | { | |
c9a2f333 AM |
3470 | if (htab->elf.dynobj == NULL) |
3471 | htab->elf.dynobj = abfd; | |
83bac4b0 NC |
3472 | |
3473 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3474 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE); | |
3475 | ||
25dbc73a | 3476 | if (sreloc == NULL) |
83bac4b0 | 3477 | return FALSE; |
25dbc73a | 3478 | } |
7619e7c7 | 3479 | |
25dbc73a AM |
3480 | /* If this is a global symbol, we count the number of |
3481 | relocations we need for this symbol. */ | |
3482 | if (h != NULL) | |
3483 | { | |
f95f8542 AM |
3484 | struct elf_dyn_relocs *p; |
3485 | struct elf_dyn_relocs **rel_head; | |
3486 | ||
91d6fa6a | 3487 | rel_head = &ppc_elf_hash_entry (h)->dyn_relocs; |
f95f8542 AM |
3488 | p = *rel_head; |
3489 | if (p == NULL || p->sec != sec) | |
3490 | { | |
3491 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3492 | if (p == NULL) | |
3493 | return FALSE; | |
3494 | p->next = *rel_head; | |
3495 | *rel_head = p; | |
3496 | p->sec = sec; | |
3497 | p->count = 0; | |
3498 | p->pc_count = 0; | |
3499 | } | |
3500 | p->count += 1; | |
3501 | if (!must_be_dyn_reloc (info, r_type)) | |
3502 | p->pc_count += 1; | |
25dbc73a AM |
3503 | } |
3504 | else | |
3505 | { | |
3506 | /* Track dynamic relocs needed for local syms too. | |
3507 | We really need local syms available to do this | |
3508 | easily. Oh well. */ | |
f95f8542 AM |
3509 | struct ppc_dyn_relocs *p; |
3510 | struct ppc_dyn_relocs **rel_head; | |
3511 | bfd_boolean is_ifunc; | |
25dbc73a | 3512 | asection *s; |
6edfbbad | 3513 | void *vpp; |
87d72d41 | 3514 | Elf_Internal_Sym *isym; |
6edfbbad | 3515 | |
87d72d41 AM |
3516 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
3517 | abfd, r_symndx); | |
3518 | if (isym == NULL) | |
25dbc73a | 3519 | return FALSE; |
7fce784e | 3520 | |
87d72d41 AM |
3521 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
3522 | if (s == NULL) | |
3523 | s = sec; | |
3524 | ||
6edfbbad | 3525 | vpp = &elf_section_data (s)->local_dynrel; |
f95f8542 AM |
3526 | rel_head = (struct ppc_dyn_relocs **) vpp; |
3527 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
3528 | p = *rel_head; | |
3529 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
3530 | p = p->next; | |
3531 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
3532 | { | |
3533 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
3534 | if (p == NULL) | |
3535 | return FALSE; | |
3536 | p->next = *rel_head; | |
3537 | *rel_head = p; | |
3538 | p->sec = sec; | |
3539 | p->ifunc = is_ifunc; | |
3540 | p->count = 0; | |
3541 | } | |
3542 | p->count += 1; | |
25dbc73a | 3543 | } |
7619e7c7 | 3544 | } |
25dbc73a AM |
3545 | |
3546 | break; | |
7619e7c7 AM |
3547 | } |
3548 | } | |
ee05f2fe | 3549 | |
25dbc73a AM |
3550 | return TRUE; |
3551 | } | |
3552 | \f | |
005d79fd AM |
3553 | /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD |
3554 | and OBFD, and merge non-conflicting ones. */ | |
4a91d0ba | 3555 | bfd_boolean |
50e03d47 | 3556 | _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info) |
34c8bcba | 3557 | { |
50e03d47 | 3558 | bfd *obfd = info->output_bfd; |
c6e65352 DJ |
3559 | obj_attribute *in_attr, *in_attrs; |
3560 | obj_attribute *out_attr, *out_attrs; | |
4a91d0ba | 3561 | bfd_boolean ret = TRUE; |
34c8bcba | 3562 | |
c6e65352 DJ |
3563 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
3564 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
3565 | ||
c6e65352 DJ |
3566 | in_attr = &in_attrs[Tag_GNU_Power_ABI_FP]; |
3567 | out_attr = &out_attrs[Tag_GNU_Power_ABI_FP]; | |
005d79fd | 3568 | |
c6e65352 | 3569 | if (in_attr->i != out_attr->i) |
34c8bcba | 3570 | { |
005d79fd AM |
3571 | int in_fp = in_attr->i & 3; |
3572 | int out_fp = out_attr->i & 3; | |
4a91d0ba | 3573 | static bfd *last_fp, *last_ld; |
005d79fd AM |
3574 | |
3575 | if (in_fp == 0) | |
34c8bcba | 3576 | ; |
005d79fd AM |
3577 | else if (out_fp == 0) |
3578 | { | |
8d2c8c3d | 3579 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3580 | out_attr->i ^= in_fp; |
4a91d0ba | 3581 | last_fp = ibfd; |
005d79fd AM |
3582 | } |
3583 | else if (out_fp != 2 && in_fp == 2) | |
8d2c8c3d AM |
3584 | { |
3585 | _bfd_error_handler | |
3586 | /* xgettext:c-format */ | |
4a91d0ba AM |
3587 | (_("%pB uses hard float, %pB uses soft float"), |
3588 | last_fp, ibfd); | |
3589 | ret = FALSE; | |
8d2c8c3d | 3590 | } |
005d79fd | 3591 | else if (out_fp == 2 && in_fp != 2) |
8d2c8c3d AM |
3592 | { |
3593 | _bfd_error_handler | |
3594 | /* xgettext:c-format */ | |
4a91d0ba AM |
3595 | (_("%pB uses hard float, %pB uses soft float"), |
3596 | ibfd, last_fp); | |
3597 | ret = FALSE; | |
8d2c8c3d | 3598 | } |
005d79fd | 3599 | else if (out_fp == 1 && in_fp == 3) |
8d2c8c3d AM |
3600 | { |
3601 | _bfd_error_handler | |
3602 | /* xgettext:c-format */ | |
4a91d0ba AM |
3603 | (_("%pB uses double-precision hard float, " |
3604 | "%pB uses single-precision hard float"), last_fp, ibfd); | |
3605 | ret = FALSE; | |
8d2c8c3d | 3606 | } |
005d79fd | 3607 | else if (out_fp == 3 && in_fp == 1) |
8d2c8c3d AM |
3608 | { |
3609 | _bfd_error_handler | |
3610 | /* xgettext:c-format */ | |
4a91d0ba AM |
3611 | (_("%pB uses double-precision hard float, " |
3612 | "%pB uses single-precision hard float"), ibfd, last_fp); | |
3613 | ret = FALSE; | |
8d2c8c3d | 3614 | } |
005d79fd AM |
3615 | |
3616 | in_fp = in_attr->i & 0xc; | |
3617 | out_fp = out_attr->i & 0xc; | |
3618 | if (in_fp == 0) | |
3619 | ; | |
3620 | else if (out_fp == 0) | |
3621 | { | |
8d2c8c3d | 3622 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3623 | out_attr->i ^= in_fp; |
4a91d0ba | 3624 | last_ld = ibfd; |
005d79fd AM |
3625 | } |
3626 | else if (out_fp != 2 * 4 && in_fp == 2 * 4) | |
8d2c8c3d AM |
3627 | { |
3628 | _bfd_error_handler | |
3629 | /* xgettext:c-format */ | |
4a91d0ba AM |
3630 | (_("%pB uses 64-bit long double, " |
3631 | "%pB uses 128-bit long double"), ibfd, last_ld); | |
3632 | ret = FALSE; | |
8d2c8c3d | 3633 | } |
005d79fd | 3634 | else if (in_fp != 2 * 4 && out_fp == 2 * 4) |
8d2c8c3d AM |
3635 | { |
3636 | _bfd_error_handler | |
3637 | /* xgettext:c-format */ | |
4a91d0ba AM |
3638 | (_("%pB uses 64-bit long double, " |
3639 | "%pB uses 128-bit long double"), last_ld, ibfd); | |
3640 | ret = FALSE; | |
8d2c8c3d | 3641 | } |
005d79fd | 3642 | else if (out_fp == 1 * 4 && in_fp == 3 * 4) |
8d2c8c3d AM |
3643 | { |
3644 | _bfd_error_handler | |
3645 | /* xgettext:c-format */ | |
4a91d0ba AM |
3646 | (_("%pB uses IBM long double, " |
3647 | "%pB uses IEEE long double"), last_ld, ibfd); | |
3648 | ret = FALSE; | |
8d2c8c3d | 3649 | } |
005d79fd | 3650 | else if (out_fp == 3 * 4 && in_fp == 1 * 4) |
8d2c8c3d AM |
3651 | { |
3652 | _bfd_error_handler | |
3653 | /* xgettext:c-format */ | |
4a91d0ba AM |
3654 | (_("%pB uses IBM long double, " |
3655 | "%pB uses IEEE long double"), ibfd, last_ld); | |
3656 | ret = FALSE; | |
8d2c8c3d | 3657 | } |
c6e65352 | 3658 | } |
4a91d0ba AM |
3659 | |
3660 | if (!ret) | |
3661 | { | |
3662 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; | |
3663 | bfd_set_error (bfd_error_bad_value); | |
3664 | } | |
3665 | return ret; | |
005d79fd AM |
3666 | } |
3667 | ||
3668 | /* Merge object attributes from IBFD into OBFD. Warn if | |
3669 | there are conflicting attributes. */ | |
3670 | static bfd_boolean | |
50e03d47 | 3671 | ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) |
005d79fd | 3672 | { |
50e03d47 | 3673 | bfd *obfd; |
005d79fd AM |
3674 | obj_attribute *in_attr, *in_attrs; |
3675 | obj_attribute *out_attr, *out_attrs; | |
4a91d0ba | 3676 | bfd_boolean ret; |
005d79fd | 3677 | |
4a91d0ba AM |
3678 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
3679 | return FALSE; | |
005d79fd | 3680 | |
50e03d47 | 3681 | obfd = info->output_bfd; |
005d79fd AM |
3682 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; |
3683 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
c6e65352 DJ |
3684 | |
3685 | /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and | |
3686 | merge non-conflicting ones. */ | |
3687 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector]; | |
3688 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector]; | |
4a91d0ba | 3689 | ret = TRUE; |
c6e65352 DJ |
3690 | if (in_attr->i != out_attr->i) |
3691 | { | |
005d79fd AM |
3692 | int in_vec = in_attr->i & 3; |
3693 | int out_vec = out_attr->i & 3; | |
4a91d0ba | 3694 | static bfd *last_vec; |
c6e65352 | 3695 | |
005d79fd AM |
3696 | if (in_vec == 0) |
3697 | ; | |
3698 | else if (out_vec == 0) | |
c6e65352 | 3699 | { |
8d2c8c3d | 3700 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3701 | out_attr->i = in_vec; |
4a91d0ba | 3702 | last_vec = ibfd; |
c6e65352 | 3703 | } |
c6e65352 DJ |
3704 | /* For now, allow generic to transition to AltiVec or SPE |
3705 | without a warning. If GCC marked files with their stack | |
3706 | alignment and used don't-care markings for files which are | |
3707 | not affected by the vector ABI, we could warn about this | |
3708 | case too. */ | |
005d79fd | 3709 | else if (in_vec == 1) |
c6e65352 | 3710 | ; |
005d79fd AM |
3711 | else if (out_vec == 1) |
3712 | { | |
8d2c8c3d | 3713 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3714 | out_attr->i = in_vec; |
4a91d0ba | 3715 | last_vec = ibfd; |
005d79fd AM |
3716 | } |
3717 | else if (out_vec < in_vec) | |
8d2c8c3d AM |
3718 | { |
3719 | _bfd_error_handler | |
3720 | /* xgettext:c-format */ | |
4a91d0ba AM |
3721 | (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
3722 | last_vec, ibfd); | |
8d2c8c3d | 3723 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3724 | ret = FALSE; |
8d2c8c3d | 3725 | } |
005d79fd | 3726 | else if (out_vec > in_vec) |
8d2c8c3d AM |
3727 | { |
3728 | _bfd_error_handler | |
3729 | /* xgettext:c-format */ | |
4a91d0ba AM |
3730 | (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"), |
3731 | ibfd, last_vec); | |
8d2c8c3d | 3732 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3733 | ret = FALSE; |
8d2c8c3d | 3734 | } |
34c8bcba JM |
3735 | } |
3736 | ||
f82e0623 NF |
3737 | /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes |
3738 | and merge non-conflicting ones. */ | |
3739 | in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
3740 | out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return]; | |
3741 | if (in_attr->i != out_attr->i) | |
3742 | { | |
005d79fd AM |
3743 | int in_struct = in_attr->i & 3; |
3744 | int out_struct = out_attr->i & 3; | |
4a91d0ba | 3745 | static bfd *last_struct; |
005d79fd AM |
3746 | |
3747 | if (in_struct == 0 || in_struct == 3) | |
f82e0623 | 3748 | ; |
005d79fd AM |
3749 | else if (out_struct == 0) |
3750 | { | |
8d2c8c3d | 3751 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; |
005d79fd | 3752 | out_attr->i = in_struct; |
4a91d0ba | 3753 | last_struct = ibfd; |
005d79fd AM |
3754 | } |
3755 | else if (out_struct < in_struct) | |
8d2c8c3d AM |
3756 | { |
3757 | _bfd_error_handler | |
3758 | /* xgettext:c-format */ | |
4a91d0ba AM |
3759 | (_("%pB uses r3/r4 for small structure returns, " |
3760 | "%pB uses memory"), last_struct, ibfd); | |
8d2c8c3d | 3761 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3762 | ret = FALSE; |
8d2c8c3d | 3763 | } |
005d79fd | 3764 | else if (out_struct > in_struct) |
8d2c8c3d AM |
3765 | { |
3766 | _bfd_error_handler | |
3767 | /* xgettext:c-format */ | |
4a91d0ba AM |
3768 | (_("%pB uses r3/r4 for small structure returns, " |
3769 | "%pB uses memory"), ibfd, last_struct); | |
8d2c8c3d | 3770 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; |
4a91d0ba | 3771 | ret = FALSE; |
8d2c8c3d | 3772 | } |
f82e0623 | 3773 | } |
4a91d0ba AM |
3774 | if (!ret) |
3775 | { | |
3776 | bfd_set_error (bfd_error_bad_value); | |
3777 | return FALSE; | |
3778 | } | |
f82e0623 | 3779 | |
34c8bcba | 3780 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 3781 | return _bfd_elf_merge_object_attributes (ibfd, info); |
34c8bcba JM |
3782 | } |
3783 | ||
8853c3d3 AM |
3784 | /* Merge backend specific data from an object file to the output |
3785 | object file when linking. */ | |
3786 | ||
3787 | static bfd_boolean | |
50e03d47 | 3788 | ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
8853c3d3 | 3789 | { |
50e03d47 | 3790 | bfd *obfd = info->output_bfd; |
8853c3d3 AM |
3791 | flagword old_flags; |
3792 | flagword new_flags; | |
3793 | bfd_boolean error; | |
3794 | ||
0c8d6e5c | 3795 | if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd)) |
8853c3d3 AM |
3796 | return TRUE; |
3797 | ||
cc643b88 | 3798 | /* Check if we have the same endianness. */ |
50e03d47 | 3799 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
8853c3d3 AM |
3800 | return FALSE; |
3801 | ||
50e03d47 | 3802 | if (!ppc_elf_merge_obj_attributes (ibfd, info)) |
34c8bcba JM |
3803 | return FALSE; |
3804 | ||
91ed9b71 AM |
3805 | if ((ibfd->flags & DYNAMIC) != 0) |
3806 | return TRUE; | |
3807 | ||
8853c3d3 AM |
3808 | new_flags = elf_elfheader (ibfd)->e_flags; |
3809 | old_flags = elf_elfheader (obfd)->e_flags; | |
3810 | if (!elf_flags_init (obfd)) | |
3811 | { | |
3812 | /* First call, no flags set. */ | |
3813 | elf_flags_init (obfd) = TRUE; | |
3814 | elf_elfheader (obfd)->e_flags = new_flags; | |
3815 | } | |
3816 | ||
3817 | /* Compatible flags are ok. */ | |
3818 | else if (new_flags == old_flags) | |
3819 | ; | |
3820 | ||
3821 | /* Incompatible flags. */ | |
3822 | else | |
3823 | { | |
3824 | /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib | |
3825 | to be linked with either. */ | |
3826 | error = FALSE; | |
3827 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
3828 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
3829 | { | |
3830 | error = TRUE; | |
4eca0228 | 3831 | _bfd_error_handler |
871b3ab2 | 3832 | (_("%pB: compiled with -mrelocatable and linked with " |
8853c3d3 AM |
3833 | "modules compiled normally"), ibfd); |
3834 | } | |
3835 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
3836 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
3837 | { | |
3838 | error = TRUE; | |
4eca0228 | 3839 | _bfd_error_handler |
871b3ab2 | 3840 | (_("%pB: compiled normally and linked with " |
8853c3d3 AM |
3841 | "modules compiled with -mrelocatable"), ibfd); |
3842 | } | |
3843 | ||
3844 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
3845 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
3846 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
3847 | ||
3848 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3849 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
3850 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
3851 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
3852 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
3853 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
3854 | ||
3855 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if | |
3856 | any module uses it. */ | |
3857 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
3858 | ||
3859 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3860 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
3861 | ||
3862 | /* Warn about any other mismatches. */ | |
3863 | if (new_flags != old_flags) | |
3864 | { | |
3865 | error = TRUE; | |
4eca0228 | 3866 | _bfd_error_handler |
695344c0 | 3867 | /* xgettext:c-format */ |
871b3ab2 | 3868 | (_("%pB: uses different e_flags (%#x) fields " |
cd9af601 AM |
3869 | "than previous modules (%#x)"), |
3870 | ibfd, new_flags, old_flags); | |
8853c3d3 AM |
3871 | } |
3872 | ||
3873 | if (error) | |
3874 | { | |
3875 | bfd_set_error (bfd_error_bad_value); | |
3876 | return FALSE; | |
3877 | } | |
3878 | } | |
3879 | ||
3880 | return TRUE; | |
3881 | } | |
b9c361e0 JL |
3882 | |
3883 | static void | |
95f0d0d2 | 3884 | ppc_elf_vle_split16 (bfd *input_bfd, |
08dc996f AM |
3885 | asection *input_section, |
3886 | unsigned long offset, | |
95f0d0d2 | 3887 | bfd_byte *loc, |
86c95733 | 3888 | bfd_vma value, |
08dc996f AM |
3889 | split16_format_type split16_format, |
3890 | bfd_boolean fixup) | |
b9c361e0 | 3891 | { |
bb6bf75e | 3892 | unsigned int insn, opcode; |
b9c361e0 | 3893 | |
95f0d0d2 | 3894 | insn = bfd_get_32 (input_bfd, loc); |
bb6bf75e | 3895 | opcode = insn & E_OPCODE_MASK; |
08dc996f AM |
3896 | if (opcode == E_OR2I_INSN |
3897 | || opcode == E_AND2I_DOT_INSN | |
3898 | || opcode == E_OR2IS_INSN | |
3899 | || opcode == E_LIS_INSN | |
3900 | || opcode == E_AND2IS_DOT_INSN) | |
3901 | { | |
3902 | if (split16_format != split16a_type) | |
3903 | { | |
3904 | if (fixup) | |
3905 | split16_format = split16a_type; | |
3906 | else | |
3907 | _bfd_error_handler | |
3908 | /* xgettext:c-format */ | |
871b3ab2 | 3909 | (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"), |
08dc996f AM |
3910 | input_bfd, input_section, offset, opcode); |
3911 | } | |
3912 | } | |
3913 | else if (opcode == E_ADD2I_DOT_INSN | |
3914 | || opcode == E_ADD2IS_INSN | |
3915 | || opcode == E_CMP16I_INSN | |
3916 | || opcode == E_MULL2I_INSN | |
3917 | || opcode == E_CMPL16I_INSN | |
3918 | || opcode == E_CMPH16I_INSN | |
3919 | || opcode == E_CMPHL16I_INSN) | |
3920 | { | |
3921 | if (split16_format != split16d_type) | |
3922 | { | |
3923 | if (fixup) | |
3924 | split16_format = split16d_type; | |
3925 | else | |
3926 | _bfd_error_handler | |
3927 | /* xgettext:c-format */ | |
871b3ab2 | 3928 | (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"), |
08dc996f AM |
3929 | input_bfd, input_section, offset, opcode); |
3930 | } | |
3931 | } | |
bb6bf75e AM |
3932 | if (split16_format == split16a_type) |
3933 | { | |
3934 | insn &= ~((0xf800 << 5) | 0x7ff); | |
3935 | insn |= (value & 0xf800) << 5; | |
3936 | if ((insn & E_LI_MASK) == E_LI_INSN) | |
3937 | { | |
3938 | /* Hack for e_li. Extend sign. */ | |
3939 | insn &= ~(0xf0000 >> 5); | |
3940 | insn |= (-(value & 0x8000) & 0xf0000) >> 5; | |
3941 | } | |
3942 | } | |
3943 | else | |
3944 | { | |
3945 | insn &= ~((0xf800 << 10) | 0x7ff); | |
3946 | insn |= (value & 0xf800) << 10; | |
3947 | } | |
86c95733 | 3948 | insn |= value & 0x7ff; |
95f0d0d2 | 3949 | bfd_put_32 (input_bfd, insn, loc); |
b9c361e0 | 3950 | } |
83eef883 AFB |
3951 | |
3952 | static void | |
3953 | ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value) | |
3954 | { | |
3955 | unsigned int insn; | |
3956 | ||
3957 | insn = bfd_get_32 (output_bfd, loc); | |
3958 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
3959 | /* Top 4 bits of value to 17..20. */ | |
3960 | insn |= (value & 0xf0000) >> 5; | |
3961 | /* Next 5 bits of the value to 11..15. */ | |
3962 | insn |= (value & 0xf800) << 5; | |
3963 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
3964 | insn |= value & 0x7ff; | |
3965 | bfd_put_32 (output_bfd, insn, loc); | |
3966 | } | |
3967 | ||
8853c3d3 | 3968 | \f |
d7128ce4 AM |
3969 | /* Choose which PLT scheme to use, and set .plt flags appropriately. |
3970 | Returns -1 on error, 0 for old PLT, 1 for new PLT. */ | |
3971 | int | |
3972 | ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5446cbdf | 3973 | struct bfd_link_info *info) |
d7128ce4 AM |
3974 | { |
3975 | struct ppc_elf_link_hash_table *htab; | |
9d8504b1 | 3976 | flagword flags; |
d7128ce4 AM |
3977 | |
3978 | htab = ppc_elf_hash_table (info); | |
4a3dc543 RS |
3979 | |
3980 | if (htab->plt_type == PLT_UNSET) | |
016687f8 | 3981 | { |
b3874e1a AM |
3982 | struct elf_link_hash_entry *h; |
3983 | ||
5446cbdf | 3984 | if (htab->params->plt_style == PLT_OLD) |
016687f8 | 3985 | htab->plt_type = PLT_OLD; |
0e1862bb | 3986 | else if (bfd_link_pic (info) |
b3874e1a AM |
3987 | && htab->elf.dynamic_sections_created |
3988 | && (h = elf_link_hash_lookup (&htab->elf, "_mcount", | |
3989 | FALSE, FALSE, TRUE)) != NULL | |
3990 | && (h->type == STT_FUNC | |
3991 | || h->needs_plt) | |
3992 | && h->ref_regular | |
3993 | && !(SYMBOL_CALLS_LOCAL (info, h) | |
21d68fcd | 3994 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
b3874e1a AM |
3995 | { |
3996 | /* Profiling of shared libs (and pies) is not supported with | |
3997 | secure plt, because ppc32 does profiling before a | |
3998 | function prologue and a secure plt pic call stubs needs | |
3999 | r30 to be set up. */ | |
4000 | htab->plt_type = PLT_OLD; | |
4001 | } | |
016687f8 AM |
4002 | else |
4003 | { | |
4004 | bfd *ibfd; | |
5446cbdf | 4005 | enum ppc_elf_plt_type plt_type = htab->params->plt_style; |
016687f8 AM |
4006 | |
4007 | /* Look through the reloc flags left by ppc_elf_check_relocs. | |
4008 | Use the old style bss plt if a file makes plt calls | |
4009 | without using the new relocs, and if ld isn't given | |
4010 | --secure-plt and we never see REL16 relocs. */ | |
4011 | if (plt_type == PLT_UNSET) | |
4012 | plt_type = PLT_OLD; | |
c72f2fb2 | 4013 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) |
0c8d6e5c | 4014 | if (is_ppc_elf (ibfd)) |
016687f8 AM |
4015 | { |
4016 | if (ppc_elf_tdata (ibfd)->has_rel16) | |
4017 | plt_type = PLT_NEW; | |
4018 | else if (ppc_elf_tdata (ibfd)->makes_plt_call) | |
4019 | { | |
4020 | plt_type = PLT_OLD; | |
4021 | htab->old_bfd = ibfd; | |
4022 | break; | |
4023 | } | |
4024 | } | |
4025 | htab->plt_type = plt_type; | |
4026 | } | |
4027 | } | |
5446cbdf | 4028 | if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW) |
b3874e1a AM |
4029 | { |
4030 | if (htab->old_bfd != NULL) | |
cf97bcb0 | 4031 | _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd); |
b3874e1a | 4032 | else |
cf97bcb0 | 4033 | _bfd_error_handler (_("bss-plt forced by profiling")); |
b3874e1a | 4034 | } |
d7128ce4 | 4035 | |
4a3dc543 | 4036 | BFD_ASSERT (htab->plt_type != PLT_VXWORKS); |
9d8504b1 | 4037 | |
4a3dc543 | 4038 | if (htab->plt_type == PLT_NEW) |
9d8504b1 PB |
4039 | { |
4040 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
4041 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
86b9da88 AM |
4042 | |
4043 | /* The new PLT is a loaded section. */ | |
ce558b89 | 4044 | if (htab->elf.splt != NULL |
fd361982 | 4045 | && !bfd_set_section_flags (htab->elf.splt, flags)) |
86b9da88 AM |
4046 | return -1; |
4047 | ||
4048 | /* The new GOT is not executable. */ | |
ce558b89 | 4049 | if (htab->elf.sgot != NULL |
fd361982 | 4050 | && !bfd_set_section_flags (htab->elf.sgot, flags)) |
86b9da88 | 4051 | return -1; |
d7128ce4 AM |
4052 | } |
4053 | else | |
4054 | { | |
4055 | /* Stop an unused .glink section from affecting .text alignment. */ | |
86b9da88 | 4056 | if (htab->glink != NULL |
fd361982 | 4057 | && !bfd_set_section_alignment (htab->glink, 0)) |
86b9da88 | 4058 | return -1; |
d7128ce4 | 4059 | } |
4a3dc543 | 4060 | return htab->plt_type == PLT_NEW; |
d7128ce4 AM |
4061 | } |
4062 | \f | |
25dbc73a AM |
4063 | /* Return the section that should be marked against GC for a given |
4064 | relocation. */ | |
586119b3 | 4065 | |
25dbc73a AM |
4066 | static asection * |
4067 | ppc_elf_gc_mark_hook (asection *sec, | |
07adf181 | 4068 | struct bfd_link_info *info, |
25dbc73a AM |
4069 | Elf_Internal_Rela *rel, |
4070 | struct elf_link_hash_entry *h, | |
4071 | Elf_Internal_Sym *sym) | |
4072 | { | |
4073 | if (h != NULL) | |
07adf181 AM |
4074 | switch (ELF32_R_TYPE (rel->r_info)) |
4075 | { | |
4076 | case R_PPC_GNU_VTINHERIT: | |
4077 | case R_PPC_GNU_VTENTRY: | |
4078 | return NULL; | |
4079 | } | |
4080 | ||
4081 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
25dbc73a | 4082 | } |
49c09209 AM |
4083 | |
4084 | static bfd_boolean | |
4085 | get_sym_h (struct elf_link_hash_entry **hp, | |
4086 | Elf_Internal_Sym **symp, | |
4087 | asection **symsecp, | |
4088 | unsigned char **tls_maskp, | |
4089 | Elf_Internal_Sym **locsymsp, | |
4090 | unsigned long r_symndx, | |
4091 | bfd *ibfd) | |
4092 | { | |
4093 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
4094 | ||
4095 | if (r_symndx >= symtab_hdr->sh_info) | |
4096 | { | |
4097 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4098 | struct elf_link_hash_entry *h; | |
4099 | ||
4100 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4101 | while (h->root.type == bfd_link_hash_indirect | |
4102 | || h->root.type == bfd_link_hash_warning) | |
4103 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4104 | ||
4105 | if (hp != NULL) | |
4106 | *hp = h; | |
4107 | ||
4108 | if (symp != NULL) | |
4109 | *symp = NULL; | |
4110 | ||
4111 | if (symsecp != NULL) | |
4112 | { | |
4113 | asection *symsec = NULL; | |
4114 | if (h->root.type == bfd_link_hash_defined | |
4115 | || h->root.type == bfd_link_hash_defweak) | |
4116 | symsec = h->root.u.def.section; | |
4117 | *symsecp = symsec; | |
4118 | } | |
4119 | ||
4120 | if (tls_maskp != NULL) | |
4121 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; | |
4122 | } | |
4123 | else | |
4124 | { | |
4125 | Elf_Internal_Sym *sym; | |
4126 | Elf_Internal_Sym *locsyms = *locsymsp; | |
4127 | ||
4128 | if (locsyms == NULL) | |
4129 | { | |
4130 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4131 | if (locsyms == NULL) | |
4132 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
4133 | symtab_hdr->sh_info, | |
4134 | 0, NULL, NULL, NULL); | |
4135 | if (locsyms == NULL) | |
4136 | return FALSE; | |
4137 | *locsymsp = locsyms; | |
4138 | } | |
4139 | sym = locsyms + r_symndx; | |
4140 | ||
4141 | if (hp != NULL) | |
4142 | *hp = NULL; | |
4143 | ||
4144 | if (symp != NULL) | |
4145 | *symp = sym; | |
4146 | ||
4147 | if (symsecp != NULL) | |
4148 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
4149 | ||
4150 | if (tls_maskp != NULL) | |
4151 | { | |
4152 | bfd_signed_vma *local_got; | |
4153 | unsigned char *tls_mask; | |
4154 | ||
4155 | tls_mask = NULL; | |
4156 | local_got = elf_local_got_refcounts (ibfd); | |
4157 | if (local_got != NULL) | |
4158 | { | |
4159 | struct plt_entry **local_plt = (struct plt_entry **) | |
4160 | (local_got + symtab_hdr->sh_info); | |
4161 | unsigned char *lgot_masks = (unsigned char *) | |
4162 | (local_plt + symtab_hdr->sh_info); | |
4163 | tls_mask = &lgot_masks[r_symndx]; | |
4164 | } | |
4165 | *tls_maskp = tls_mask; | |
4166 | } | |
4167 | } | |
4168 | return TRUE; | |
4169 | } | |
25dbc73a | 4170 | \f |
3e04d765 AM |
4171 | /* Analyze inline PLT call relocations to see whether calls to locally |
4172 | defined functions can be converted to direct calls. */ | |
4173 | ||
4174 | bfd_boolean | |
4175 | ppc_elf_inline_plt (struct bfd_link_info *info) | |
4176 | { | |
4177 | struct ppc_elf_link_hash_table *htab; | |
4178 | bfd *ibfd; | |
4179 | asection *sec; | |
4180 | bfd_vma low_vma, high_vma, limit; | |
4181 | ||
4182 | htab = ppc_elf_hash_table (info); | |
4183 | if (htab == NULL) | |
4184 | return FALSE; | |
4185 | ||
4186 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
4187 | reduced somewhat to cater for possible stubs that might be added | |
4188 | between the call and its destination. */ | |
4189 | limit = 0x1e00000; | |
4190 | low_vma = -1; | |
4191 | high_vma = 0; | |
4192 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
4193 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
4194 | { | |
4195 | if (low_vma > sec->vma) | |
4196 | low_vma = sec->vma; | |
4197 | if (high_vma < sec->vma + sec->size) | |
4198 | high_vma = sec->vma + sec->size; | |
4199 | } | |
4200 | ||
4201 | /* If a "bl" can reach anywhere in local code sections, then we can | |
4202 | convert all inline PLT sequences to direct calls when the symbol | |
4203 | is local. */ | |
4204 | if (high_vma - low_vma < limit) | |
4205 | { | |
4206 | htab->can_convert_all_inline_plt = 1; | |
4207 | return TRUE; | |
4208 | } | |
4209 | ||
4210 | /* Otherwise, go looking through relocs for cases where a direct | |
4211 | call won't reach. Mark the symbol on any such reloc to disable | |
4212 | the optimization and keep the PLT entry as it seems likely that | |
4213 | this will be better than creating trampolines. Note that this | |
4214 | will disable the optimization for all inline PLT calls to a | |
4215 | particular symbol, not just those that won't reach. The | |
4216 | difficulty in doing a more precise optimization is that the | |
4217 | linker needs to make a decision depending on whether a | |
4218 | particular R_PPC_PLTCALL insn can be turned into a direct | |
4219 | call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in | |
4220 | the sequence, and there is nothing that ties those relocs | |
4221 | together except their symbol. */ | |
4222 | ||
4223 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
4224 | { | |
4225 | Elf_Internal_Shdr *symtab_hdr; | |
4226 | Elf_Internal_Sym *local_syms; | |
4227 | ||
4228 | if (!is_ppc_elf (ibfd)) | |
4229 | continue; | |
4230 | ||
4231 | local_syms = NULL; | |
4232 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4233 | ||
4234 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
4235 | if (sec->has_pltcall | |
4236 | && !bfd_is_abs_section (sec->output_section)) | |
4237 | { | |
4238 | Elf_Internal_Rela *relstart, *rel, *relend; | |
4239 | ||
4240 | /* Read the relocations. */ | |
4241 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
4242 | info->keep_memory); | |
4243 | if (relstart == NULL) | |
4244 | return FALSE; | |
4245 | ||
4246 | relend = relstart + sec->reloc_count; | |
4247 | for (rel = relstart; rel < relend; ) | |
4248 | { | |
4249 | enum elf_ppc_reloc_type r_type; | |
4250 | unsigned long r_symndx; | |
4251 | asection *sym_sec; | |
4252 | struct elf_link_hash_entry *h; | |
4253 | Elf_Internal_Sym *sym; | |
4254 | unsigned char *tls_maskp; | |
4255 | ||
4256 | r_type = ELF32_R_TYPE (rel->r_info); | |
4257 | if (r_type != R_PPC_PLTCALL) | |
4258 | continue; | |
4259 | ||
4260 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4261 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
4262 | r_symndx, ibfd)) | |
4263 | { | |
4264 | if (elf_section_data (sec)->relocs != relstart) | |
4265 | free (relstart); | |
4266 | if (local_syms != NULL | |
4267 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
4268 | free (local_syms); | |
4269 | return FALSE; | |
4270 | } | |
4271 | ||
4272 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
4273 | { | |
4274 | bfd_vma from, to; | |
4275 | if (h != NULL) | |
4276 | to = h->root.u.def.value; | |
4277 | else | |
4278 | to = sym->st_value; | |
4279 | to += (rel->r_addend | |
4280 | + sym_sec->output_offset | |
4281 | + sym_sec->output_section->vma); | |
4282 | from = (rel->r_offset | |
4283 | + sec->output_offset | |
4284 | + sec->output_section->vma); | |
4285 | if (to - from + limit < 2 * limit) | |
4286 | *tls_maskp &= ~PLT_KEEP; | |
4287 | } | |
4288 | } | |
4289 | if (elf_section_data (sec)->relocs != relstart) | |
4290 | free (relstart); | |
4291 | } | |
4292 | ||
4293 | if (local_syms != NULL | |
4294 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
4295 | { | |
4296 | if (!info->keep_memory) | |
4297 | free (local_syms); | |
4298 | else | |
4299 | symtab_hdr->contents = (unsigned char *) local_syms; | |
4300 | } | |
4301 | } | |
4302 | ||
4303 | return TRUE; | |
4304 | } | |
4305 | ||
3a71aa26 AM |
4306 | /* Set plt output section type, htab->tls_get_addr, and call the |
4307 | generic ELF tls_setup function. */ | |
7fce784e | 4308 | |
25dbc73a | 4309 | asection * |
5446cbdf | 4310 | ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
7fce784e | 4311 | { |
25dbc73a | 4312 | struct ppc_elf_link_hash_table *htab; |
7fce784e | 4313 | |
25dbc73a | 4314 | htab = ppc_elf_hash_table (info); |
a7f2871e AM |
4315 | htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4316 | FALSE, FALSE, TRUE); | |
f01f1741 AM |
4317 | if (htab->plt_type != PLT_NEW) |
4318 | htab->params->no_tls_get_addr_opt = TRUE; | |
4319 | ||
5446cbdf | 4320 | if (!htab->params->no_tls_get_addr_opt) |
a7f2871e AM |
4321 | { |
4322 | struct elf_link_hash_entry *opt, *tga; | |
4323 | opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
4324 | FALSE, FALSE, TRUE); | |
4325 | if (opt != NULL | |
4326 | && (opt->root.type == bfd_link_hash_defined | |
4327 | || opt->root.type == bfd_link_hash_defweak)) | |
4328 | { | |
4329 | /* If glibc supports an optimized __tls_get_addr call stub, | |
4330 | signalled by the presence of __tls_get_addr_opt, and we'll | |
4331 | be calling __tls_get_addr via a plt call stub, then | |
4332 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
4333 | tga = htab->tls_get_addr; | |
4334 | if (htab->elf.dynamic_sections_created | |
4335 | && tga != NULL | |
4336 | && (tga->type == STT_FUNC | |
4337 | || tga->needs_plt) | |
4338 | && !(SYMBOL_CALLS_LOCAL (info, tga) | |
21d68fcd | 4339 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga))) |
a7f2871e AM |
4340 | { |
4341 | struct plt_entry *ent; | |
32af9f6e AM |
4342 | for (ent = tga->plt.plist; ent != NULL; ent = ent->next) |
4343 | if (ent->plt.refcount > 0) | |
4344 | break; | |
4345 | if (ent != NULL) | |
a7f2871e AM |
4346 | { |
4347 | tga->root.type = bfd_link_hash_indirect; | |
4348 | tga->root.u.i.link = &opt->root; | |
4349 | ppc_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 4350 | opt->mark = 1; |
a7f2871e AM |
4351 | if (opt->dynindx != -1) |
4352 | { | |
4353 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
4354 | opt->dynindx = -1; | |
4355 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4356 | opt->dynstr_index); | |
4357 | if (!bfd_elf_link_record_dynamic_symbol (info, opt)) | |
4358 | return FALSE; | |
4359 | } | |
4360 | htab->tls_get_addr = opt; | |
4361 | } | |
4362 | } | |
4363 | } | |
4364 | else | |
5446cbdf | 4365 | htab->params->no_tls_get_addr_opt = TRUE; |
a7f2871e | 4366 | } |
4a3dc543 | 4367 | if (htab->plt_type == PLT_NEW |
ce558b89 AM |
4368 | && htab->elf.splt != NULL |
4369 | && htab->elf.splt->output_section != NULL) | |
d7128ce4 | 4370 | { |
ce558b89 AM |
4371 | elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS; |
4372 | elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE; | |
d7128ce4 AM |
4373 | } |
4374 | ||
25dbc73a | 4375 | return _bfd_elf_tls_setup (obfd, info); |
7fce784e AS |
4376 | } |
4377 | ||
3a71aa26 AM |
4378 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
4379 | HASH. */ | |
4380 | ||
4381 | static bfd_boolean | |
4382 | branch_reloc_hash_match (const bfd *ibfd, | |
4383 | const Elf_Internal_Rela *rel, | |
4384 | const struct elf_link_hash_entry *hash) | |
4385 | { | |
4386 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
4387 | enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info); | |
4388 | unsigned int r_symndx = ELF32_R_SYM (rel->r_info); | |
4389 | ||
e054468f | 4390 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
3a71aa26 AM |
4391 | { |
4392 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
4393 | struct elf_link_hash_entry *h; | |
4394 | ||
4395 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4396 | while (h->root.type == bfd_link_hash_indirect | |
4397 | || h->root.type == bfd_link_hash_warning) | |
4398 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4399 | if (h == hash) | |
4400 | return TRUE; | |
4401 | } | |
4402 | return FALSE; | |
4403 | } | |
4404 | ||
25dbc73a AM |
4405 | /* Run through all the TLS relocs looking for optimization |
4406 | opportunities. */ | |
252b5132 | 4407 | |
25dbc73a AM |
4408 | bfd_boolean |
4409 | ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, | |
4410 | struct bfd_link_info *info) | |
252b5132 | 4411 | { |
7fce784e | 4412 | bfd *ibfd; |
25dbc73a AM |
4413 | asection *sec; |
4414 | struct ppc_elf_link_hash_table *htab; | |
b7fcf6f6 | 4415 | int pass; |
252b5132 | 4416 | |
3cbc1e5e | 4417 | if (!bfd_link_executable (info)) |
25dbc73a | 4418 | return TRUE; |
252b5132 | 4419 | |
7619e7c7 | 4420 | htab = ppc_elf_hash_table (info); |
663a1470 AM |
4421 | if (htab == NULL) |
4422 | return FALSE; | |
4423 | ||
b7fcf6f6 AM |
4424 | /* Make two passes through the relocs. First time check that tls |
4425 | relocs involved in setting up a tls_get_addr call are indeed | |
663a1470 AM |
4426 | followed by such a call. If they are not, don't do any tls |
4427 | optimization. On the second pass twiddle tls_mask flags to | |
4428 | notify relocate_section that optimization can be done, and | |
4429 | adjust got and plt refcounts. */ | |
b7fcf6f6 | 4430 | for (pass = 0; pass < 2; ++pass) |
c72f2fb2 | 4431 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
b7fcf6f6 | 4432 | { |
0ffa91dd | 4433 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
32af9f6e | 4434 | asection *got2 = bfd_get_section_by_name (ibfd, ".got2"); |
7619e7c7 | 4435 | |
b7fcf6f6 AM |
4436 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
4437 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
4438 | { | |
4439 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 4440 | int expecting_tls_get_addr = 0; |
252b5132 | 4441 | |
b7fcf6f6 AM |
4442 | /* Read the relocations. */ |
4443 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
4444 | info->keep_memory); | |
4445 | if (relstart == NULL) | |
4446 | return FALSE; | |
7619e7c7 | 4447 | |
b7fcf6f6 AM |
4448 | relend = relstart + sec->reloc_count; |
4449 | for (rel = relstart; rel < relend; rel++) | |
4450 | { | |
4451 | enum elf_ppc_reloc_type r_type; | |
4452 | unsigned long r_symndx; | |
4453 | struct elf_link_hash_entry *h = NULL; | |
bac3c8c5 | 4454 | unsigned char *tls_mask; |
37da22e5 | 4455 | unsigned char tls_set, tls_clear; |
b7fcf6f6 | 4456 | bfd_boolean is_local; |
b7fcf6f6 AM |
4457 | bfd_signed_vma *got_count; |
4458 | ||
4459 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4460 | if (r_symndx >= symtab_hdr->sh_info) | |
4461 | { | |
4462 | struct elf_link_hash_entry **sym_hashes; | |
7fce784e | 4463 | |
b7fcf6f6 AM |
4464 | sym_hashes = elf_sym_hashes (ibfd); |
4465 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4466 | while (h->root.type == bfd_link_hash_indirect | |
4467 | || h->root.type == bfd_link_hash_warning) | |
4468 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4469 | } | |
7619e7c7 | 4470 | |
f749f26e | 4471 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
b7fcf6f6 | 4472 | r_type = ELF32_R_TYPE (rel->r_info); |
663a1470 AM |
4473 | /* If this section has old-style __tls_get_addr calls |
4474 | without marker relocs, then check that each | |
4475 | __tls_get_addr call reloc is preceded by a reloc | |
4476 | that conceivably belongs to the __tls_get_addr arg | |
4477 | setup insn. If we don't find matching arg setup | |
4478 | relocs, don't do any tls optimization. */ | |
4479 | if (pass == 0 | |
9737e8af | 4480 | && sec->nomark_tls_get_addr |
663a1470 AM |
4481 | && h != NULL |
4482 | && h == htab->tls_get_addr | |
4483 | && !expecting_tls_get_addr | |
4484 | && is_branch_reloc (r_type)) | |
4485 | { | |
25f53a85 | 4486 | info->callbacks->minfo ("%H __tls_get_addr lost arg, " |
663a1470 AM |
4487 | "TLS optimization disabled\n", |
4488 | ibfd, sec, rel->r_offset); | |
4489 | if (elf_section_data (sec)->relocs != relstart) | |
4490 | free (relstart); | |
4491 | return TRUE; | |
4492 | } | |
4493 | ||
4494 | expecting_tls_get_addr = 0; | |
b7fcf6f6 AM |
4495 | switch (r_type) |
4496 | { | |
4497 | case R_PPC_GOT_TLSLD16: | |
4498 | case R_PPC_GOT_TLSLD16_LO: | |
4499 | expecting_tls_get_addr = 1; | |
1a0670f3 | 4500 | /* Fall through. */ |
b7fcf6f6 AM |
4501 | |
4502 | case R_PPC_GOT_TLSLD16_HI: | |
4503 | case R_PPC_GOT_TLSLD16_HA: | |
4504 | /* These relocs should never be against a symbol | |
4505 | defined in a shared lib. Leave them alone if | |
4506 | that turns out to be the case. */ | |
4507 | if (!is_local) | |
4508 | continue; | |
4509 | ||
4510 | /* LD -> LE */ | |
4511 | tls_set = 0; | |
4512 | tls_clear = TLS_LD; | |
4513 | break; | |
4514 | ||
4515 | case R_PPC_GOT_TLSGD16: | |
4516 | case R_PPC_GOT_TLSGD16_LO: | |
4517 | expecting_tls_get_addr = 1; | |
1a0670f3 | 4518 | /* Fall through. */ |
b7fcf6f6 AM |
4519 | |
4520 | case R_PPC_GOT_TLSGD16_HI: | |
4521 | case R_PPC_GOT_TLSGD16_HA: | |
4522 | if (is_local) | |
4523 | /* GD -> LE */ | |
4524 | tls_set = 0; | |
4525 | else | |
4526 | /* GD -> IE */ | |
b00a0a86 | 4527 | tls_set = TLS_TLS | TLS_GDIE; |
b7fcf6f6 AM |
4528 | tls_clear = TLS_GD; |
4529 | break; | |
4530 | ||
4531 | case R_PPC_GOT_TPREL16: | |
4532 | case R_PPC_GOT_TPREL16_LO: | |
4533 | case R_PPC_GOT_TPREL16_HI: | |
4534 | case R_PPC_GOT_TPREL16_HA: | |
4535 | if (is_local) | |
4536 | { | |
4537 | /* IE -> LE */ | |
4538 | tls_set = 0; | |
4539 | tls_clear = TLS_TPREL; | |
4540 | break; | |
4541 | } | |
4542 | else | |
4543 | continue; | |
4544 | ||
32af9f6e | 4545 | case R_PPC_TLSLD: |
7d04a20a AM |
4546 | if (!is_local) |
4547 | continue; | |
4548 | /* Fall through. */ | |
4549 | case R_PPC_TLSGD: | |
23cedd1d AM |
4550 | if (rel + 1 < relend |
4551 | && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) | |
4552 | { | |
4553 | if (pass != 0 | |
4554 | && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ) | |
4555 | { | |
4556 | r_type = ELF32_R_TYPE (rel[1].r_info); | |
4557 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
4558 | if (r_symndx >= symtab_hdr->sh_info) | |
4559 | { | |
4560 | struct elf_link_hash_entry **sym_hashes; | |
4561 | ||
4562 | sym_hashes = elf_sym_hashes (ibfd); | |
4563 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4564 | while (h->root.type == bfd_link_hash_indirect | |
4565 | || h->root.type == bfd_link_hash_warning) | |
4566 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4567 | if (h != NULL) | |
4568 | { | |
4569 | struct plt_entry *ent = NULL; | |
4570 | bfd_vma addend = 0; | |
4571 | ||
4572 | if (bfd_link_pic (info)) | |
4573 | addend = rel->r_addend; | |
4574 | ent = find_plt_ent (&h->plt.plist, | |
4575 | got2, addend); | |
4576 | if (ent != NULL | |
4577 | && ent->plt.refcount > 0) | |
4578 | ent->plt.refcount -= 1; | |
4579 | } | |
4580 | } | |
4581 | } | |
4582 | continue; | |
4583 | } | |
32af9f6e AM |
4584 | expecting_tls_get_addr = 2; |
4585 | tls_set = 0; | |
4586 | tls_clear = 0; | |
4587 | break; | |
4588 | ||
b7fcf6f6 | 4589 | default: |
25dbc73a | 4590 | continue; |
b7fcf6f6 | 4591 | } |
25dbc73a | 4592 | |
b7fcf6f6 AM |
4593 | if (pass == 0) |
4594 | { | |
727fc41e | 4595 | if (!expecting_tls_get_addr |
9737e8af | 4596 | || !sec->nomark_tls_get_addr) |
b7fcf6f6 | 4597 | continue; |
25dbc73a | 4598 | |
3a71aa26 AM |
4599 | if (rel + 1 < relend |
4600 | && branch_reloc_hash_match (ibfd, rel + 1, | |
4601 | htab->tls_get_addr)) | |
4602 | continue; | |
25dbc73a | 4603 | |
b7fcf6f6 AM |
4604 | /* Uh oh, we didn't find the expected call. We |
4605 | could just mark this symbol to exclude it | |
4606 | from tls optimization but it's safer to skip | |
663a1470 | 4607 | the entire optimization. */ |
25f53a85 | 4608 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
4609 | "TLS optimization disabled\n"), |
4610 | ibfd, sec, rel->r_offset); | |
4611 | if (elf_section_data (sec)->relocs != relstart) | |
4612 | free (relstart); | |
4613 | return TRUE; | |
b7fcf6f6 | 4614 | } |
25dbc73a | 4615 | |
b7fcf6f6 AM |
4616 | if (h != NULL) |
4617 | { | |
4618 | tls_mask = &ppc_elf_hash_entry (h)->tls_mask; | |
4619 | got_count = &h->got.refcount; | |
4620 | } | |
4621 | else | |
4622 | { | |
b7fcf6f6 | 4623 | bfd_signed_vma *lgot_refs; |
e054468f | 4624 | struct plt_entry **local_plt; |
bac3c8c5 | 4625 | unsigned char *lgot_masks; |
25dbc73a | 4626 | |
b7fcf6f6 AM |
4627 | lgot_refs = elf_local_got_refcounts (ibfd); |
4628 | if (lgot_refs == NULL) | |
4629 | abort (); | |
e054468f AM |
4630 | local_plt = (struct plt_entry **) |
4631 | (lgot_refs + symtab_hdr->sh_info); | |
bac3c8c5 AM |
4632 | lgot_masks = (unsigned char *) |
4633 | (local_plt + symtab_hdr->sh_info); | |
b7fcf6f6 AM |
4634 | tls_mask = &lgot_masks[r_symndx]; |
4635 | got_count = &lgot_refs[r_symndx]; | |
4636 | } | |
25dbc73a | 4637 | |
37da22e5 AM |
4638 | /* If we don't have old-style __tls_get_addr calls |
4639 | without TLSGD/TLSLD marker relocs, and we haven't | |
4640 | found a new-style __tls_get_addr call with a | |
4641 | marker for this symbol, then we either have a | |
4642 | broken object file or an -mlongcall style | |
4643 | indirect call to __tls_get_addr without a marker. | |
4644 | Disable optimization in this case. */ | |
4645 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
9737e8af | 4646 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
4647 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
4648 | != (TLS_TLS | TLS_MARK))) | |
4649 | continue; | |
4650 | ||
7d04a20a | 4651 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
37da22e5 AM |
4652 | { |
4653 | struct plt_entry *ent; | |
4654 | bfd_vma addend = 0; | |
4655 | ||
4656 | if (bfd_link_pic (info) | |
23cedd1d AM |
4657 | && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24 |
4658 | || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL)) | |
37da22e5 AM |
4659 | addend = rel[1].r_addend; |
4660 | ent = find_plt_ent (&htab->tls_get_addr->plt.plist, | |
4661 | got2, addend); | |
4662 | if (ent != NULL && ent->plt.refcount > 0) | |
4663 | ent->plt.refcount -= 1; | |
37da22e5 | 4664 | } |
7d04a20a AM |
4665 | if (tls_clear == 0) |
4666 | continue; | |
37da22e5 | 4667 | |
b7fcf6f6 AM |
4668 | if (tls_set == 0) |
4669 | { | |
4670 | /* We managed to get rid of a got entry. */ | |
4671 | if (*got_count > 0) | |
4672 | *got_count -= 1; | |
4673 | } | |
25dbc73a | 4674 | |
b7fcf6f6 AM |
4675 | *tls_mask |= tls_set; |
4676 | *tls_mask &= ~tls_clear; | |
4677 | } | |
25dbc73a | 4678 | |
b7fcf6f6 AM |
4679 | if (elf_section_data (sec)->relocs != relstart) |
4680 | free (relstart); | |
4681 | } | |
b7fcf6f6 | 4682 | } |
9a23f96e | 4683 | htab->do_tls_opt = 1; |
25dbc73a AM |
4684 | return TRUE; |
4685 | } | |
4686 | \f | |
98bbb1b8 | 4687 | /* Find dynamic relocs for H that apply to read-only sections. */ |
625af618 | 4688 | |
98bbb1b8 AM |
4689 | static asection * |
4690 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
625af618 | 4691 | { |
6061a67d | 4692 | struct elf_dyn_relocs *p; |
625af618 AM |
4693 | |
4694 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
4695 | { | |
4696 | asection *s = p->sec->output_section; | |
4697 | ||
98bbb1b8 AM |
4698 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
4699 | return p->sec; | |
625af618 | 4700 | } |
98bbb1b8 | 4701 | return NULL; |
625af618 AM |
4702 | } |
4703 | ||
287c7eaf AM |
4704 | /* Return true if we have dynamic relocs against H or any of its weak |
4705 | aliases, that apply to read-only sections. Cannot be used after | |
4706 | size_dynamic_sections. */ | |
4707 | ||
4708 | static bfd_boolean | |
4709 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
4710 | { | |
4711 | struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h); | |
4712 | do | |
4713 | { | |
4714 | if (readonly_dynrelocs (&eh->elf)) | |
4715 | return TRUE; | |
4716 | eh = ppc_elf_hash_entry (eh->elf.u.alias); | |
4717 | } while (eh != NULL && &eh->elf != h); | |
4718 | ||
4719 | return FALSE; | |
4720 | } | |
4721 | ||
4722 | /* Return whether H has pc-relative dynamic relocs. */ | |
4723 | ||
4724 | static bfd_boolean | |
4725 | pc_dynrelocs (struct elf_link_hash_entry *h) | |
4726 | { | |
4727 | struct elf_dyn_relocs *p; | |
4728 | ||
4729 | for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
4730 | if (p->pc_count != 0) | |
4731 | return TRUE; | |
4732 | return FALSE; | |
4733 | } | |
4734 | ||
25dbc73a AM |
4735 | /* Adjust a symbol defined by a dynamic object and referenced by a |
4736 | regular object. The current definition is in some section of the | |
4737 | dynamic object, but we're not including those sections. We have to | |
4738 | change the definition to something the rest of the link can | |
4739 | understand. */ | |
7fce784e | 4740 | |
25dbc73a AM |
4741 | static bfd_boolean |
4742 | ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
4743 | struct elf_link_hash_entry *h) | |
4744 | { | |
4745 | struct ppc_elf_link_hash_table *htab; | |
4746 | asection *s; | |
7fce784e | 4747 | |
25dbc73a AM |
4748 | #ifdef DEBUG |
4749 | fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", | |
4750 | h->root.root.string); | |
4751 | #endif | |
252b5132 | 4752 | |
25dbc73a AM |
4753 | /* Make sure we know what is going on here. */ |
4754 | htab = ppc_elf_hash_table (info); | |
4755 | BFD_ASSERT (htab->elf.dynobj != NULL | |
4756 | && (h->needs_plt | |
91e21fb7 | 4757 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 4758 | || h->is_weakalias |
25dbc73a AM |
4759 | || (h->def_dynamic |
4760 | && h->ref_regular | |
4761 | && !h->def_regular))); | |
252b5132 | 4762 | |
25dbc73a AM |
4763 | /* Deal with function syms. */ |
4764 | if (h->type == STT_FUNC | |
e054468f | 4765 | || h->type == STT_GNU_IFUNC |
25dbc73a AM |
4766 | || h->needs_plt) |
4767 | { | |
529fe20e AM |
4768 | bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h) |
4769 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
287c7eaf AM |
4770 | /* Discard dyn_relocs when non-pic if we've decided that a |
4771 | function symbol is local. */ | |
4772 | if (!bfd_link_pic (info) && local) | |
4773 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
529fe20e | 4774 | |
25dbc73a AM |
4775 | /* Clear procedure linkage table information for any symbol that |
4776 | won't need a .plt entry. */ | |
a6aa5195 AM |
4777 | struct plt_entry *ent; |
4778 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
4779 | if (ent->plt.refcount > 0) | |
4780 | break; | |
4781 | if (ent == NULL | |
2d7ad24e AM |
4782 | || (h->type != STT_GNU_IFUNC |
4783 | && local | |
3e04d765 AM |
4784 | && (htab->can_convert_all_inline_plt |
4785 | || (ppc_elf_hash_entry (h)->tls_mask | |
4786 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
252b5132 | 4787 | { |
25dbc73a | 4788 | /* A PLT entry is not required/allowed when: |
252b5132 | 4789 | |
25dbc73a AM |
4790 | 1. We are not using ld.so; because then the PLT entry |
4791 | can't be set up, so we can't use one. In this case, | |
4792 | ppc_elf_adjust_dynamic_symbol won't even be called. | |
252b5132 | 4793 | |
25dbc73a AM |
4794 | 2. GC has rendered the entry unused. |
4795 | ||
4796 | 3. We know for certain that a call to this symbol | |
4797 | will go to this object, or will remain undefined. */ | |
a6aa5195 | 4798 | h->plt.plist = NULL; |
25dbc73a | 4799 | h->needs_plt = 0; |
d1eca1e4 | 4800 | h->pointer_equality_needed = 0; |
25dbc73a | 4801 | } |
625af618 AM |
4802 | else |
4803 | { | |
d1eca1e4 AM |
4804 | /* Taking a function's address in a read/write section |
4805 | doesn't require us to define the function symbol in the | |
1009ef28 | 4806 | executable on a plt call stub. A dynamic reloc can |
f0158f44 AM |
4807 | be used instead, giving better runtime performance. |
4808 | (Calls via that function pointer don't need to bounce | |
4809 | through the plt call stub.) Similarly, use a dynamic | |
4810 | reloc for a weak reference when possible, allowing the | |
4811 | resolution of the symbol to be set at load time rather | |
4812 | than link time. */ | |
4813 | if ((h->pointer_equality_needed | |
3988aed5 AM |
4814 | || (h->non_got_ref |
4815 | && !h->ref_regular_nonweak | |
4816 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
1009ef28 AM |
4817 | && !htab->is_vxworks |
4818 | && !ppc_elf_hash_entry (h)->has_sda_refs | |
98bbb1b8 | 4819 | && !readonly_dynrelocs (h)) |
d1eca1e4 AM |
4820 | { |
4821 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
4822 | /* If we haven't seen a branch reloc and the symbol |
4823 | isn't an ifunc then we don't need a plt entry. */ | |
4824 | if (!h->needs_plt && h->type != STT_GNU_IFUNC) | |
3988aed5 | 4825 | h->plt.plist = NULL; |
d1eca1e4 | 4826 | } |
287c7eaf | 4827 | else if (!bfd_link_pic (info)) |
529fe20e AM |
4828 | /* We are going to be defining the function symbol on the |
4829 | plt stub, so no dyn_relocs needed when non-pic. */ | |
287c7eaf | 4830 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
625af618 | 4831 | } |
d3e454b9 | 4832 | h->protected_def = 0; |
3988aed5 | 4833 | /* Function symbols can't have copy relocs. */ |
25dbc73a | 4834 | return TRUE; |
252b5132 | 4835 | } |
25dbc73a | 4836 | else |
a6aa5195 | 4837 | h->plt.plist = NULL; |
252b5132 | 4838 | |
25dbc73a AM |
4839 | /* If this is a weak symbol, and there is a real definition, the |
4840 | processor independent code will have arranged for us to see the | |
4841 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 4842 | if (h->is_weakalias) |
252b5132 | 4843 | { |
60d67dc8 AM |
4844 | struct elf_link_hash_entry *def = weakdef (h); |
4845 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
4846 | h->root.u.def.section = def->root.u.def.section; | |
4847 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
4848 | if (def->root.u.def.section == htab->elf.sdynbss |
4849 | || def->root.u.def.section == htab->elf.sdynrelro | |
4850 | || def->root.u.def.section == htab->dynsbss) | |
4851 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; | |
25dbc73a AM |
4852 | return TRUE; |
4853 | } | |
dc810e39 | 4854 | |
25dbc73a AM |
4855 | /* This is a reference to a symbol defined by a dynamic object which |
4856 | is not a function. */ | |
252b5132 | 4857 | |
25dbc73a AM |
4858 | /* If we are creating a shared library, we must presume that the |
4859 | only references to the symbol are via the global offset table. | |
4860 | For such cases we need not do anything here; the relocations will | |
4861 | be handled correctly by relocate_section. */ | |
0e1862bb | 4862 | if (bfd_link_pic (info)) |
d3e454b9 AM |
4863 | { |
4864 | h->protected_def = 0; | |
4865 | return TRUE; | |
4866 | } | |
252b5132 | 4867 | |
25dbc73a AM |
4868 | /* If there are no references to this symbol that do not use the |
4869 | GOT, we don't need to generate a copy reloc. */ | |
4870 | if (!h->non_got_ref) | |
d3e454b9 AM |
4871 | { |
4872 | h->protected_def = 0; | |
4873 | return TRUE; | |
4874 | } | |
4875 | ||
4876 | /* Protected variables do not work with .dynbss. The copy in | |
4877 | .dynbss won't be used by the shared library with the protected | |
4878 | definition for the variable. Editing to PIC, or text relocations | |
4879 | are preferable to an incorrect program. */ | |
4880 | if (h->protected_def) | |
4881 | { | |
4882 | if (ELIMINATE_COPY_RELOCS | |
4883 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
4884 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
4885 | && htab->params->pic_fixup == 0 | |
4886 | && info->disable_target_specific_optimizations <= 1) | |
4887 | htab->params->pic_fixup = 1; | |
d3e454b9 AM |
4888 | return TRUE; |
4889 | } | |
25dbc73a | 4890 | |
a127494f AM |
4891 | /* If -z nocopyreloc was given, we won't generate them either. */ |
4892 | if (info->nocopyreloc) | |
529fe20e | 4893 | return TRUE; |
a127494f | 4894 | |
dce2246a | 4895 | /* If we don't find any dynamic relocs in read-only sections, then |
cfd2c773 NS |
4896 | we'll be keeping the dynamic relocs and avoiding the copy reloc. |
4897 | We can't do this if there are any small data relocations. This | |
4898 | doesn't work on VxWorks, where we can not have dynamic | |
4899 | relocations (other than copy and jump slot relocations) in an | |
4900 | executable. */ | |
4dc4a9a5 | 4901 | if (ELIMINATE_COPY_RELOCS |
cfd2c773 | 4902 | && !ppc_elf_hash_entry (h)->has_sda_refs |
625af618 AM |
4903 | && !htab->is_vxworks |
4904 | && !h->def_regular | |
287c7eaf | 4905 | && !alias_readonly_dynrelocs (h)) |
529fe20e | 4906 | return TRUE; |
252b5132 | 4907 | |
25dbc73a AM |
4908 | /* We must allocate the symbol in our .dynbss section, which will |
4909 | become part of the .bss section of the executable. There will be | |
4910 | an entry for this symbol in the .dynsym section. The dynamic | |
4911 | object will contain position independent code, so all references | |
4912 | from the dynamic object to this symbol will go through the global | |
4913 | offset table. The dynamic linker will use the .dynsym entry to | |
4914 | determine the address it must put in the global offset table, so | |
4915 | both the dynamic object and the regular object will refer to the | |
4916 | same memory location for the variable. | |
4917 | ||
4dc4a9a5 DJ |
4918 | Of course, if the symbol is referenced using SDAREL relocs, we |
4919 | must instead allocate it in .sbss. */ | |
4dc4a9a5 | 4920 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 4921 | s = htab->dynsbss; |
5474d94f AM |
4922 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
4923 | s = htab->elf.sdynrelro; | |
25dbc73a | 4924 | else |
9d19e4fd | 4925 | s = htab->elf.sdynbss; |
25dbc73a AM |
4926 | BFD_ASSERT (s != NULL); |
4927 | ||
1d7e9d18 | 4928 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
25dbc73a AM |
4929 | { |
4930 | asection *srel; | |
4931 | ||
4a7e5234 AM |
4932 | /* We must generate a R_PPC_COPY reloc to tell the dynamic |
4933 | linker to copy the initial value out of the dynamic object | |
4934 | and into the runtime process image. */ | |
4dc4a9a5 | 4935 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 4936 | srel = htab->relsbss; |
5474d94f AM |
4937 | else if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
4938 | srel = htab->elf.sreldynrelro; | |
25dbc73a | 4939 | else |
9d19e4fd | 4940 | srel = htab->elf.srelbss; |
25dbc73a AM |
4941 | BFD_ASSERT (srel != NULL); |
4942 | srel->size += sizeof (Elf32_External_Rela); | |
4943 | h->needs_copy = 1; | |
4944 | } | |
7619e7c7 | 4945 | |
529fe20e | 4946 | /* We no longer want dyn_relocs. */ |
287c7eaf | 4947 | ppc_elf_hash_entry (h)->dyn_relocs = NULL; |
6cabe1ea | 4948 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
25dbc73a AM |
4949 | } |
4950 | \f | |
ac39eb42 AM |
4951 | /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is |
4952 | xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0, | |
4953 | specifying the addend on the plt relocation. For -fpic code, the sym | |
4954 | is xxxxxxxx.plt_pic32.<callee>, and for -fPIC | |
4955 | xxxxxxxx.got2.plt_pic32.<callee>. */ | |
0ba07910 AM |
4956 | |
4957 | static bfd_boolean | |
4958 | add_stub_sym (struct plt_entry *ent, | |
4959 | struct elf_link_hash_entry *h, | |
ac39eb42 | 4960 | struct bfd_link_info *info) |
0ba07910 AM |
4961 | { |
4962 | struct elf_link_hash_entry *sh; | |
4963 | size_t len1, len2, len3; | |
4964 | char *name; | |
ac39eb42 AM |
4965 | const char *stub; |
4966 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
4967 | ||
0e1862bb | 4968 | if (bfd_link_pic (info)) |
ac39eb42 AM |
4969 | stub = ".plt_pic32."; |
4970 | else | |
4971 | stub = ".plt_call32."; | |
0ba07910 AM |
4972 | |
4973 | len1 = strlen (h->root.root.string); | |
ac39eb42 | 4974 | len2 = strlen (stub); |
0ba07910 AM |
4975 | len3 = 0; |
4976 | if (ent->sec) | |
4977 | len3 = strlen (ent->sec->name); | |
ac39eb42 | 4978 | name = bfd_malloc (len1 + len2 + len3 + 9); |
0ba07910 AM |
4979 | if (name == NULL) |
4980 | return FALSE; | |
4981 | sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff); | |
4982 | if (ent->sec) | |
4983 | memcpy (name + 8, ent->sec->name, len3); | |
ac39eb42 AM |
4984 | memcpy (name + 8 + len3, stub, len2); |
4985 | memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1); | |
0ba07910 AM |
4986 | sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); |
4987 | if (sh == NULL) | |
4988 | return FALSE; | |
4989 | if (sh->root.type == bfd_link_hash_new) | |
4990 | { | |
4991 | sh->root.type = bfd_link_hash_defined; | |
4992 | sh->root.u.def.section = htab->glink; | |
4993 | sh->root.u.def.value = ent->glink_offset; | |
4994 | sh->ref_regular = 1; | |
4995 | sh->def_regular = 1; | |
4996 | sh->ref_regular_nonweak = 1; | |
4997 | sh->forced_local = 1; | |
4998 | sh->non_elf = 0; | |
2ec55de3 | 4999 | sh->root.linker_def = 1; |
0ba07910 AM |
5000 | } |
5001 | return TRUE; | |
5002 | } | |
5003 | ||
3b36f7e6 AM |
5004 | /* Allocate NEED contiguous space in .got, and return the offset. |
5005 | Handles allocation of the got header when crossing 32k. */ | |
5006 | ||
5007 | static bfd_vma | |
5008 | allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need) | |
5009 | { | |
5010 | bfd_vma where; | |
4a3dc543 | 5011 | unsigned int max_before_header; |
3b36f7e6 | 5012 | |
4a3dc543 | 5013 | if (htab->plt_type == PLT_VXWORKS) |
9d8504b1 | 5014 | { |
ce558b89 AM |
5015 | where = htab->elf.sgot->size; |
5016 | htab->elf.sgot->size += need; | |
9d8504b1 | 5017 | } |
3b36f7e6 AM |
5018 | else |
5019 | { | |
4a3dc543 RS |
5020 | max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764; |
5021 | if (need <= htab->got_gap) | |
3b36f7e6 | 5022 | { |
4a3dc543 RS |
5023 | where = max_before_header - htab->got_gap; |
5024 | htab->got_gap -= need; | |
5025 | } | |
5026 | else | |
5027 | { | |
ce558b89 AM |
5028 | if (htab->elf.sgot->size + need > max_before_header |
5029 | && htab->elf.sgot->size <= max_before_header) | |
4a3dc543 | 5030 | { |
ce558b89 AM |
5031 | htab->got_gap = max_before_header - htab->elf.sgot->size; |
5032 | htab->elf.sgot->size = max_before_header + htab->got_header_size; | |
4a3dc543 | 5033 | } |
ce558b89 AM |
5034 | where = htab->elf.sgot->size; |
5035 | htab->elf.sgot->size += need; | |
3b36f7e6 | 5036 | } |
3b36f7e6 AM |
5037 | } |
5038 | return where; | |
5039 | } | |
5040 | ||
f15d0b54 AM |
5041 | /* Calculate size of GOT entries for symbol given its TLS_MASK. |
5042 | TLS_LD is excluded because those go in a special GOT slot. */ | |
5043 | ||
5044 | static inline unsigned int | |
5045 | got_entries_needed (int tls_mask) | |
5046 | { | |
5047 | unsigned int need; | |
5048 | if ((tls_mask & TLS_TLS) == 0) | |
5049 | need = 4; | |
5050 | else | |
5051 | { | |
5052 | need = 0; | |
5053 | if ((tls_mask & TLS_GD) != 0) | |
5054 | need += 8; | |
b00a0a86 | 5055 | if ((tls_mask & (TLS_TPREL | TLS_GDIE)) != 0) |
f15d0b54 AM |
5056 | need += 4; |
5057 | if ((tls_mask & TLS_DTPREL) != 0) | |
5058 | need += 4; | |
5059 | } | |
5060 | return need; | |
5061 | } | |
5062 | ||
46434633 | 5063 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
5064 | |
5065 | static bfd_boolean | |
46434633 AM |
5066 | ensure_undef_dynamic (struct bfd_link_info *info, |
5067 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
5068 | { |
5069 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5070 | ||
5071 | if (htab->dynamic_sections_created | |
46434633 AM |
5072 | && ((info->dynamic_undefined_weak != 0 |
5073 | && h->root.type == bfd_link_hash_undefweak) | |
5074 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
5075 | && h->dynindx == -1 |
5076 | && !h->forced_local | |
5077 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5078 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
5079 | return TRUE; | |
5080 | } | |
5081 | ||
25dbc73a | 5082 | /* Allocate space in associated reloc sections for dynamic relocs. */ |
252b5132 | 5083 | |
b34976b6 | 5084 | static bfd_boolean |
25dbc73a | 5085 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
252b5132 | 5086 | { |
25dbc73a AM |
5087 | struct bfd_link_info *info = inf; |
5088 | struct ppc_elf_link_hash_entry *eh; | |
7619e7c7 | 5089 | struct ppc_elf_link_hash_table *htab; |
6061a67d | 5090 | struct elf_dyn_relocs *p; |
f0158f44 | 5091 | bfd_boolean dyn; |
252b5132 | 5092 | |
25dbc73a | 5093 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 5094 | return TRUE; |
252b5132 | 5095 | |
7619e7c7 | 5096 | htab = ppc_elf_hash_table (info); |
25dbc73a | 5097 | eh = (struct ppc_elf_link_hash_entry *) h; |
d3e454b9 AM |
5098 | if (eh->elf.got.refcount > 0 |
5099 | || (ELIMINATE_COPY_RELOCS | |
5100 | && !eh->elf.def_regular | |
5101 | && eh->elf.protected_def | |
5102 | && eh->has_addr16_ha | |
5103 | && eh->has_addr16_lo | |
5104 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5105 | { |
d6e14abc AM |
5106 | unsigned int need; |
5107 | ||
46434633 AM |
5108 | /* Make sure this symbol is output as a dynamic symbol. */ |
5109 | if (!ensure_undef_dynamic (info, &eh->elf)) | |
f0158f44 | 5110 | return FALSE; |
252b5132 | 5111 | |
d6e14abc | 5112 | need = 0; |
37da22e5 | 5113 | if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) |
25dbc73a | 5114 | { |
f749f26e | 5115 | if (SYMBOL_REFERENCES_LOCAL (info, &eh->elf)) |
f15d0b54 AM |
5116 | /* We'll just use htab->tlsld_got.offset. This should |
5117 | always be the case. It's a little odd if we have | |
5118 | a local dynamic reloc against a non-local symbol. */ | |
5119 | htab->tlsld_got.refcount += 1; | |
5120 | else | |
d6e14abc | 5121 | need += 8; |
d6e14abc | 5122 | } |
f15d0b54 | 5123 | need += got_entries_needed (eh->tls_mask); |
d6e14abc AM |
5124 | if (need == 0) |
5125 | eh->elf.got.offset = (bfd_vma) -1; | |
5126 | else | |
5127 | { | |
3b36f7e6 | 5128 | eh->elf.got.offset = allocate_got (htab, need); |
f749f26e AM |
5129 | if (((bfd_link_pic (info) |
5130 | && !((eh->tls_mask & TLS_TLS) != 0 | |
5131 | && bfd_link_executable (info) | |
5132 | && SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
f0158f44 AM |
5133 | || (htab->elf.dynamic_sections_created |
5134 | && eh->elf.dynindx != -1 | |
5135 | && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf))) | |
21d68fcd | 5136 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf)) |
252b5132 | 5137 | { |
f15d0b54 | 5138 | asection *rsec; |
f15d0b54 | 5139 | |
f749f26e AM |
5140 | need *= sizeof (Elf32_External_Rela) / 4; |
5141 | if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) | |
f15d0b54 AM |
5142 | need -= sizeof (Elf32_External_Rela); |
5143 | rsec = htab->elf.srelgot; | |
0bed072f | 5144 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5145 | rsec = htab->elf.irelplt; |
f15d0b54 | 5146 | rsec->size += need; |
252b5132 | 5147 | } |
25dbc73a AM |
5148 | } |
5149 | } | |
5150 | else | |
5151 | eh->elf.got.offset = (bfd_vma) -1; | |
252b5132 | 5152 | |
954b63d4 AM |
5153 | /* If no dynamic sections we can't have dynamic relocs, except for |
5154 | IFUNCs which are handled even in static executables. */ | |
f0158f44 AM |
5155 | if (!htab->elf.dynamic_sections_created |
5156 | && h->type != STT_GNU_IFUNC) | |
5157 | eh->dyn_relocs = NULL; | |
5158 | ||
529fe20e AM |
5159 | /* Discard relocs on undefined symbols that must be local. */ |
5160 | else if (h->root.type == bfd_link_hash_undefined | |
5161 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
5162 | eh->dyn_relocs = NULL; | |
5163 | ||
5164 | /* Also discard relocs on undefined weak syms with non-default | |
5165 | visibility, or when dynamic_undefined_weak says so. */ | |
5166 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
5167 | eh->dyn_relocs = NULL; | |
5168 | ||
f0158f44 | 5169 | if (eh->dyn_relocs == NULL) |
287c7eaf | 5170 | ; |
252b5132 | 5171 | |
25dbc73a AM |
5172 | /* In the shared -Bsymbolic case, discard space allocated for |
5173 | dynamic pc-relative relocs against symbols which turn out to be | |
5174 | defined in regular objects. For the normal shared case, discard | |
5175 | space for relocs that have become local due to symbol visibility | |
5176 | changes. */ | |
f0158f44 | 5177 | else if (bfd_link_pic (info)) |
25dbc73a AM |
5178 | { |
5179 | /* Relocs that use pc_count are those that appear on a call insn, | |
1d483afe | 5180 | or certain REL relocs (see must_be_dyn_reloc) that can be |
25dbc73a AM |
5181 | generated via assembly. We want calls to protected symbols to |
5182 | resolve directly to the function rather than going via the plt. | |
5183 | If people want function pointer comparisons to work as expected | |
5184 | then they should avoid writing weird assembly. */ | |
529fe20e | 5185 | if (SYMBOL_CALLS_LOCAL (info, h)) |
25dbc73a | 5186 | { |
6061a67d | 5187 | struct elf_dyn_relocs **pp; |
25dbc73a AM |
5188 | |
5189 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
252b5132 | 5190 | { |
25dbc73a AM |
5191 | p->count -= p->pc_count; |
5192 | p->pc_count = 0; | |
5193 | if (p->count == 0) | |
5194 | *pp = p->next; | |
5195 | else | |
5196 | pp = &p->next; | |
252b5132 | 5197 | } |
25dbc73a | 5198 | } |
252b5132 | 5199 | |
3348747a NS |
5200 | if (htab->is_vxworks) |
5201 | { | |
6061a67d | 5202 | struct elf_dyn_relocs **pp; |
3348747a NS |
5203 | |
5204 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5205 | { | |
5206 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
5207 | *pp = p->next; | |
5208 | else | |
5209 | pp = &p->next; | |
5210 | } | |
5211 | } | |
5212 | ||
954b63d4 | 5213 | if (eh->dyn_relocs != NULL) |
25dbc73a | 5214 | { |
46434633 AM |
5215 | /* Make sure this symbol is output as a dynamic symbol. */ |
5216 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5217 | return FALSE; |
25dbc73a AM |
5218 | } |
5219 | } | |
5220 | else if (ELIMINATE_COPY_RELOCS) | |
5221 | { | |
f0158f44 | 5222 | /* For the non-pic case, discard space for relocs against |
25dbc73a AM |
5223 | symbols which turn out to need copy relocs or are not |
5224 | dynamic. */ | |
529fe20e | 5225 | if (h->dynamic_adjusted |
d3e454b9 | 5226 | && !h->def_regular |
529fe20e | 5227 | && !ELF_COMMON_DEF_P (h) |
d3e454b9 AM |
5228 | && !(h->protected_def |
5229 | && eh->has_addr16_ha | |
5230 | && eh->has_addr16_lo | |
5231 | && htab->params->pic_fixup > 0)) | |
25dbc73a | 5232 | { |
46434633 AM |
5233 | /* Make sure this symbol is output as a dynamic symbol. */ |
5234 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 5235 | return FALSE; |
7619e7c7 | 5236 | |
f0158f44 | 5237 | if (h->dynindx == -1) |
287c7eaf | 5238 | eh->dyn_relocs = NULL; |
25dbc73a | 5239 | } |
f0158f44 | 5240 | else |
287c7eaf | 5241 | eh->dyn_relocs = NULL; |
25dbc73a | 5242 | } |
252b5132 | 5243 | |
f0158f44 | 5244 | /* Allocate space. */ |
25dbc73a AM |
5245 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5246 | { | |
5247 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
f95f8542 | 5248 | if (eh->elf.type == STT_GNU_IFUNC) |
ce558b89 | 5249 | sreloc = htab->elf.irelplt; |
25dbc73a AM |
5250 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
5251 | } | |
252b5132 | 5252 | |
2d7ad24e AM |
5253 | /* Handle PLT relocs. Done last, after dynindx has settled. |
5254 | We might need a PLT entry when the symbol | |
5255 | a) is dynamic, or | |
5256 | b) is an ifunc, or | |
5257 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
5258 | d) has plt16 relocs and we are linking statically. */ | |
f0158f44 | 5259 | dyn = htab->elf.dynamic_sections_created && h->dynindx != -1; |
2d7ad24e AM |
5260 | if (dyn |
5261 | || h->type == STT_GNU_IFUNC | |
5262 | || (h->needs_plt && h->dynamic_adjusted) | |
5263 | || (h->needs_plt | |
5264 | && h->def_regular | |
5265 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 5266 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
5267 | && (ppc_elf_hash_entry (h)->tls_mask |
5268 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
f0158f44 AM |
5269 | { |
5270 | struct plt_entry *ent; | |
5271 | bfd_boolean doneone = FALSE; | |
2d7ad24e | 5272 | bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1; |
f0158f44 AM |
5273 | |
5274 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5275 | if (ent->plt.refcount > 0) | |
5276 | { | |
5277 | asection *s = htab->elf.splt; | |
5278 | ||
5279 | if (!dyn) | |
2d7ad24e AM |
5280 | { |
5281 | if (h->type == STT_GNU_IFUNC) | |
5282 | s = htab->elf.iplt; | |
5283 | else | |
5284 | s = htab->pltlocal; | |
5285 | } | |
f0158f44 AM |
5286 | |
5287 | if (htab->plt_type == PLT_NEW || !dyn) | |
5288 | { | |
5289 | if (!doneone) | |
5290 | { | |
5291 | plt_offset = s->size; | |
5292 | s->size += 4; | |
5293 | } | |
5294 | ent->plt.offset = plt_offset; | |
5295 | ||
2d7ad24e AM |
5296 | if (s == htab->pltlocal) |
5297 | ent->glink_offset = glink_offset; | |
5298 | else | |
f0158f44 | 5299 | { |
2d7ad24e AM |
5300 | s = htab->glink; |
5301 | if (!doneone || bfd_link_pic (info)) | |
5302 | { | |
5303 | glink_offset = s->size; | |
5304 | s->size += GLINK_ENTRY_SIZE (htab, h); | |
5305 | } | |
5306 | if (!doneone | |
5307 | && !bfd_link_pic (info) | |
5308 | && h->def_dynamic | |
5309 | && !h->def_regular) | |
5310 | { | |
5311 | h->root.u.def.section = s; | |
5312 | h->root.u.def.value = glink_offset; | |
5313 | } | |
5314 | ent->glink_offset = glink_offset; | |
f0158f44 | 5315 | |
2d7ad24e AM |
5316 | if (htab->params->emit_stub_syms |
5317 | && !add_stub_sym (ent, h, info)) | |
5318 | return FALSE; | |
5319 | } | |
f0158f44 AM |
5320 | } |
5321 | else | |
5322 | { | |
5323 | if (!doneone) | |
5324 | { | |
5325 | /* If this is the first .plt entry, make room | |
5326 | for the special first entry. */ | |
5327 | if (s->size == 0) | |
5328 | s->size += htab->plt_initial_entry_size; | |
5329 | ||
5330 | /* The PowerPC PLT is actually composed of two | |
5331 | parts, the first part is 2 words (for a load | |
5332 | and a jump), and then there is a remaining | |
5333 | word available at the end. */ | |
5334 | plt_offset = (htab->plt_initial_entry_size | |
5335 | + (htab->plt_slot_size | |
5336 | * ((s->size | |
5337 | - htab->plt_initial_entry_size) | |
5338 | / htab->plt_entry_size))); | |
5339 | ||
5340 | /* If this symbol is not defined in a regular | |
5341 | file, and we are not generating a shared | |
5342 | library, then set the symbol to this location | |
5343 | in the .plt. This is to avoid text | |
5344 | relocations, and is required to make | |
5345 | function pointers compare as equal between | |
5346 | the normal executable and the shared library. */ | |
5347 | if (! bfd_link_pic (info) | |
5348 | && h->def_dynamic | |
5349 | && !h->def_regular) | |
5350 | { | |
5351 | h->root.u.def.section = s; | |
5352 | h->root.u.def.value = plt_offset; | |
5353 | } | |
5354 | ||
5355 | /* Make room for this entry. */ | |
5356 | s->size += htab->plt_entry_size; | |
5357 | /* After the 8192nd entry, room for two entries | |
5358 | is allocated. */ | |
5359 | if (htab->plt_type == PLT_OLD | |
5360 | && (s->size - htab->plt_initial_entry_size) | |
5361 | / htab->plt_entry_size | |
5362 | > PLT_NUM_SINGLE_ENTRIES) | |
5363 | s->size += htab->plt_entry_size; | |
5364 | } | |
5365 | ent->plt.offset = plt_offset; | |
5366 | } | |
5367 | ||
5368 | /* We also need to make an entry in the .rela.plt section. */ | |
5369 | if (!doneone) | |
5370 | { | |
5371 | if (!dyn) | |
2d7ad24e AM |
5372 | { |
5373 | if (h->type == STT_GNU_IFUNC) | |
5374 | { | |
5375 | s = htab->elf.irelplt; | |
5376 | s->size += sizeof (Elf32_External_Rela); | |
5377 | } | |
5378 | else if (bfd_link_pic (info)) | |
5379 | { | |
5380 | s = htab->relpltlocal; | |
5381 | s->size += sizeof (Elf32_External_Rela); | |
5382 | } | |
5383 | } | |
f0158f44 AM |
5384 | else |
5385 | { | |
5386 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
5387 | ||
5388 | if (htab->plt_type == PLT_VXWORKS) | |
5389 | { | |
5390 | /* Allocate space for the unloaded relocations. */ | |
5391 | if (!bfd_link_pic (info) | |
5392 | && htab->elf.dynamic_sections_created) | |
5393 | { | |
5394 | if (ent->plt.offset | |
5395 | == (bfd_vma) htab->plt_initial_entry_size) | |
5396 | { | |
5397 | htab->srelplt2->size | |
5398 | += (sizeof (Elf32_External_Rela) | |
5399 | * VXWORKS_PLTRESOLVE_RELOCS); | |
5400 | } | |
5401 | ||
5402 | htab->srelplt2->size | |
5403 | += (sizeof (Elf32_External_Rela) | |
5404 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS); | |
5405 | } | |
5406 | ||
5407 | /* Every PLT entry has an associated GOT entry in | |
5408 | .got.plt. */ | |
5409 | htab->elf.sgotplt->size += 4; | |
5410 | } | |
5411 | } | |
5412 | doneone = TRUE; | |
5413 | } | |
5414 | } | |
5415 | else | |
5416 | ent->plt.offset = (bfd_vma) -1; | |
5417 | ||
5418 | if (!doneone) | |
5419 | { | |
5420 | h->plt.plist = NULL; | |
5421 | h->needs_plt = 0; | |
5422 | } | |
5423 | } | |
5424 | else | |
5425 | { | |
5426 | h->plt.plist = NULL; | |
5427 | h->needs_plt = 0; | |
5428 | } | |
5429 | ||
25dbc73a AM |
5430 | return TRUE; |
5431 | } | |
7619e7c7 | 5432 | |
625af618 AM |
5433 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
5434 | read-only sections. */ | |
7619e7c7 | 5435 | |
25dbc73a | 5436 | static bfd_boolean |
0caf6c82 | 5437 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
25dbc73a | 5438 | { |
98bbb1b8 | 5439 | asection *sec; |
0caf6c82 | 5440 | |
25dbc73a AM |
5441 | if (h->root.type == bfd_link_hash_indirect) |
5442 | return TRUE; | |
252b5132 | 5443 | |
98bbb1b8 AM |
5444 | sec = readonly_dynrelocs (h); |
5445 | if (sec != NULL) | |
25dbc73a | 5446 | { |
98bbb1b8 AM |
5447 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
5448 | ||
0caf6c82 | 5449 | info->flags |= DF_TEXTREL; |
98bbb1b8 | 5450 | info->callbacks->minfo |
c1c8c1ef | 5451 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 5452 | sec->owner, h->root.root.string, sec); |
ee05f2fe | 5453 | |
625af618 AM |
5454 | /* Not an error, just cut short the traversal. */ |
5455 | return FALSE; | |
25dbc73a AM |
5456 | } |
5457 | return TRUE; | |
5458 | } | |
5459 | ||
6177242a AM |
5460 | static const unsigned char glink_eh_frame_cie[] = |
5461 | { | |
5462 | 0, 0, 0, 16, /* length. */ | |
5463 | 0, 0, 0, 0, /* id. */ | |
5464 | 1, /* CIE version. */ | |
5465 | 'z', 'R', 0, /* Augmentation string. */ | |
5466 | 4, /* Code alignment. */ | |
5467 | 0x7c, /* Data alignment. */ | |
5468 | 65, /* RA reg. */ | |
5469 | 1, /* Augmentation size. */ | |
5470 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
5471 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
5472 | }; | |
5473 | ||
25dbc73a AM |
5474 | /* Set the sizes of the dynamic sections. */ |
5475 | ||
5476 | static bfd_boolean | |
93d1b056 | 5477 | ppc_elf_size_dynamic_sections (bfd *output_bfd, |
25dbc73a AM |
5478 | struct bfd_link_info *info) |
5479 | { | |
5480 | struct ppc_elf_link_hash_table *htab; | |
5481 | asection *s; | |
5482 | bfd_boolean relocs; | |
5483 | bfd *ibfd; | |
7fce784e | 5484 | |
252b5132 | 5485 | #ifdef DEBUG |
25dbc73a | 5486 | fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); |
252b5132 | 5487 | #endif |
252b5132 | 5488 | |
25dbc73a AM |
5489 | htab = ppc_elf_hash_table (info); |
5490 | BFD_ASSERT (htab->elf.dynobj != NULL); | |
252b5132 | 5491 | |
25dbc73a AM |
5492 | if (elf_hash_table (info)->dynamic_sections_created) |
5493 | { | |
5494 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 5495 | if (bfd_link_executable (info) && !info->nointerp) |
25dbc73a | 5496 | { |
3d4d4302 | 5497 | s = bfd_get_linker_section (htab->elf.dynobj, ".interp"); |
25dbc73a AM |
5498 | BFD_ASSERT (s != NULL); |
5499 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5500 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5501 | } | |
5502 | } | |
252b5132 | 5503 | |
4a3dc543 | 5504 | if (htab->plt_type == PLT_OLD) |
d7128ce4 | 5505 | htab->got_header_size = 16; |
4a3dc543 | 5506 | else if (htab->plt_type == PLT_NEW) |
d7128ce4 | 5507 | htab->got_header_size = 12; |
252b5132 | 5508 | |
25dbc73a AM |
5509 | /* Set up .got offsets for local syms, and space for local dynamic |
5510 | relocs. */ | |
c72f2fb2 | 5511 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
25dbc73a AM |
5512 | { |
5513 | bfd_signed_vma *local_got; | |
5514 | bfd_signed_vma *end_local_got; | |
e054468f AM |
5515 | struct plt_entry **local_plt; |
5516 | struct plt_entry **end_local_plt; | |
25dbc73a AM |
5517 | char *lgot_masks; |
5518 | bfd_size_type locsymcount; | |
5519 | Elf_Internal_Shdr *symtab_hdr; | |
7fce784e | 5520 | |
0c8d6e5c | 5521 | if (!is_ppc_elf (ibfd)) |
25dbc73a | 5522 | continue; |
7fce784e | 5523 | |
25dbc73a AM |
5524 | for (s = ibfd->sections; s != NULL; s = s->next) |
5525 | { | |
f95f8542 | 5526 | struct ppc_dyn_relocs *p; |
252b5132 | 5527 | |
f95f8542 | 5528 | for (p = ((struct ppc_dyn_relocs *) |
25dbc73a AM |
5529 | elf_section_data (s)->local_dynrel); |
5530 | p != NULL; | |
5531 | p = p->next) | |
5532 | { | |
5533 | if (!bfd_is_abs_section (p->sec) | |
5534 | && bfd_is_abs_section (p->sec->output_section)) | |
5535 | { | |
5536 | /* Input section has been discarded, either because | |
5537 | it is a copy of a linkonce section or due to | |
5538 | linker script /DISCARD/, so we'll be discarding | |
5539 | the relocs too. */ | |
7fce784e | 5540 | } |
3348747a NS |
5541 | else if (htab->is_vxworks |
5542 | && strcmp (p->sec->output_section->name, | |
5543 | ".tls_vars") == 0) | |
5544 | { | |
5545 | /* Relocations in vxworks .tls_vars sections are | |
5546 | handled specially by the loader. */ | |
5547 | } | |
25dbc73a | 5548 | else if (p->count != 0) |
7fce784e | 5549 | { |
25f23106 | 5550 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
f95f8542 | 5551 | if (p->ifunc) |
ce558b89 | 5552 | sreloc = htab->elf.irelplt; |
25f23106 | 5553 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
25dbc73a AM |
5554 | if ((p->sec->output_section->flags |
5555 | & (SEC_READONLY | SEC_ALLOC)) | |
5556 | == (SEC_READONLY | SEC_ALLOC)) | |
0caf6c82 L |
5557 | { |
5558 | info->flags |= DF_TEXTREL; | |
871b3ab2 | 5559 | info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"), |
0caf6c82 L |
5560 | p->sec->owner, p->sec); |
5561 | } | |
7fce784e | 5562 | } |
252b5132 | 5563 | } |
252b5132 | 5564 | } |
252b5132 | 5565 | |
25dbc73a AM |
5566 | local_got = elf_local_got_refcounts (ibfd); |
5567 | if (!local_got) | |
5568 | continue; | |
252b5132 | 5569 | |
0ffa91dd | 5570 | symtab_hdr = &elf_symtab_hdr (ibfd); |
25dbc73a AM |
5571 | locsymcount = symtab_hdr->sh_info; |
5572 | end_local_got = local_got + locsymcount; | |
e054468f AM |
5573 | local_plt = (struct plt_entry **) end_local_got; |
5574 | end_local_plt = local_plt + locsymcount; | |
5575 | lgot_masks = (char *) end_local_plt; | |
91d6fa6a | 5576 | |
25dbc73a AM |
5577 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
5578 | if (*local_got > 0) | |
5579 | { | |
f15d0b54 | 5580 | unsigned int need; |
37da22e5 | 5581 | if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)) |
f15d0b54 AM |
5582 | htab->tlsld_got.refcount += 1; |
5583 | need = got_entries_needed (*lgot_masks); | |
d6e14abc AM |
5584 | if (need == 0) |
5585 | *local_got = (bfd_vma) -1; | |
25dbc73a AM |
5586 | else |
5587 | { | |
3b36f7e6 | 5588 | *local_got = allocate_got (htab, need); |
f749f26e AM |
5589 | if (bfd_link_pic (info) |
5590 | && !((*lgot_masks & TLS_TLS) != 0 | |
5591 | && bfd_link_executable (info))) | |
0bed072f | 5592 | { |
f15d0b54 | 5593 | asection *srel; |
f15d0b54 | 5594 | |
f749f26e | 5595 | need *= sizeof (Elf32_External_Rela) / 4; |
f15d0b54 | 5596 | srel = htab->elf.srelgot; |
37da22e5 | 5597 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
ce558b89 | 5598 | srel = htab->elf.irelplt; |
f15d0b54 | 5599 | srel->size += need; |
0bed072f | 5600 | } |
25dbc73a AM |
5601 | } |
5602 | } | |
5603 | else | |
5604 | *local_got = (bfd_vma) -1; | |
e054468f AM |
5605 | |
5606 | if (htab->is_vxworks) | |
5607 | continue; | |
5608 | ||
5609 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
2d7ad24e AM |
5610 | lgot_masks = (char *) end_local_plt; |
5611 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
5612 | { |
5613 | struct plt_entry *ent; | |
5614 | bfd_boolean doneone = FALSE; | |
2d7ad24e | 5615 | bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1; |
e054468f AM |
5616 | |
5617 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
5618 | if (ent->plt.refcount > 0) | |
5619 | { | |
2d7ad24e AM |
5620 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
5621 | s = htab->elf.iplt; | |
3e04d765 AM |
5622 | else if (htab->can_convert_all_inline_plt |
5623 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
5624 | { |
5625 | ent->plt.offset = (bfd_vma) -1; | |
5626 | continue; | |
5627 | } | |
5628 | else | |
5629 | s = htab->pltlocal; | |
e054468f AM |
5630 | |
5631 | if (!doneone) | |
5632 | { | |
5633 | plt_offset = s->size; | |
5634 | s->size += 4; | |
5635 | } | |
5636 | ent->plt.offset = plt_offset; | |
5637 | ||
2d7ad24e | 5638 | if (s != htab->pltlocal && (!doneone || bfd_link_pic (info))) |
e054468f | 5639 | { |
2d7ad24e | 5640 | s = htab->glink; |
e054468f | 5641 | glink_offset = s->size; |
9e390558 | 5642 | s->size += GLINK_ENTRY_SIZE (htab, NULL); |
e054468f AM |
5643 | } |
5644 | ent->glink_offset = glink_offset; | |
5645 | ||
5646 | if (!doneone) | |
5647 | { | |
2d7ad24e AM |
5648 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
5649 | { | |
5650 | s = htab->elf.irelplt; | |
5651 | s->size += sizeof (Elf32_External_Rela); | |
5652 | } | |
5653 | else if (bfd_link_pic (info)) | |
5654 | { | |
5655 | s = htab->relpltlocal; | |
5656 | s->size += sizeof (Elf32_External_Rela); | |
5657 | } | |
e054468f AM |
5658 | doneone = TRUE; |
5659 | } | |
5660 | } | |
5661 | else | |
5662 | ent->plt.offset = (bfd_vma) -1; | |
5663 | } | |
25dbc73a | 5664 | } |
252b5132 | 5665 | |
b7fcf6f6 AM |
5666 | /* Allocate space for global sym dynamic relocs. */ |
5667 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
5668 | ||
3b36f7e6 AM |
5669 | if (htab->tlsld_got.refcount > 0) |
5670 | { | |
5671 | htab->tlsld_got.offset = allocate_got (htab, 8); | |
f749f26e | 5672 | if (bfd_link_dll (info)) |
ce558b89 | 5673 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3b36f7e6 AM |
5674 | } |
5675 | else | |
5676 | htab->tlsld_got.offset = (bfd_vma) -1; | |
5677 | ||
ce558b89 | 5678 | if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS) |
3b36f7e6 AM |
5679 | { |
5680 | unsigned int g_o_t = 32768; | |
5681 | ||
4d962050 AM |
5682 | /* If we haven't allocated the header, do so now. When we get here, |
5683 | for old plt/got the got size will be 0 to 32764 (not allocated), | |
5684 | or 32780 to 65536 (header allocated). For new plt/got, the | |
5685 | corresponding ranges are 0 to 32768 and 32780 to 65536. */ | |
ce558b89 | 5686 | if (htab->elf.sgot->size <= 32768) |
3b36f7e6 | 5687 | { |
ce558b89 | 5688 | g_o_t = htab->elf.sgot->size; |
4a3dc543 | 5689 | if (htab->plt_type == PLT_OLD) |
4d962050 | 5690 | g_o_t += 4; |
ce558b89 | 5691 | htab->elf.sgot->size += htab->got_header_size; |
3b36f7e6 | 5692 | } |
3b36f7e6 AM |
5693 | |
5694 | htab->elf.hgot->root.u.def.value = g_o_t; | |
5695 | } | |
0e1862bb | 5696 | if (bfd_link_pic (info)) |
bd6c6e2b AM |
5697 | { |
5698 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
93d1b056 AM |
5699 | |
5700 | sda->root.u.def.section = htab->elf.hgot->root.u.def.section; | |
5701 | sda->root.u.def.value = htab->elf.hgot->root.u.def.value; | |
bd6c6e2b | 5702 | } |
15bfcc77 AM |
5703 | if (info->emitrelocations) |
5704 | { | |
5705 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; | |
5706 | ||
5707 | if (sda != NULL && sda->ref_regular) | |
5708 | sda->root.u.def.section->flags |= SEC_KEEP; | |
5709 | sda = htab->sdata[1].sym; | |
5710 | if (sda != NULL && sda->ref_regular) | |
5711 | sda->root.u.def.section->flags |= SEC_KEEP; | |
5712 | } | |
3b36f7e6 | 5713 | |
e054468f AM |
5714 | if (htab->glink != NULL |
5715 | && htab->glink->size != 0 | |
5716 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
5717 | { |
5718 | htab->glink_pltresolve = htab->glink->size; | |
9e390558 AM |
5719 | /* Space for the branch table. */ |
5720 | htab->glink->size | |
5721 | += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4; | |
86b9da88 | 5722 | /* Pad out to align the start of PLTresolve. */ |
5446cbdf AM |
5723 | htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround |
5724 | ? 63 : 15); | |
d7128ce4 | 5725 | htab->glink->size += GLINK_PLTRESOLVE; |
0ba07910 | 5726 | |
5446cbdf | 5727 | if (htab->params->emit_stub_syms) |
0ba07910 AM |
5728 | { |
5729 | struct elf_link_hash_entry *sh; | |
5730 | sh = elf_link_hash_lookup (&htab->elf, "__glink", | |
5731 | TRUE, FALSE, FALSE); | |
5732 | if (sh == NULL) | |
5733 | return FALSE; | |
5734 | if (sh->root.type == bfd_link_hash_new) | |
5735 | { | |
5736 | sh->root.type = bfd_link_hash_defined; | |
5737 | sh->root.u.def.section = htab->glink; | |
5738 | sh->root.u.def.value = htab->glink_pltresolve; | |
5739 | sh->ref_regular = 1; | |
5740 | sh->def_regular = 1; | |
5741 | sh->ref_regular_nonweak = 1; | |
5742 | sh->forced_local = 1; | |
5743 | sh->non_elf = 0; | |
2ec55de3 | 5744 | sh->root.linker_def = 1; |
0ba07910 AM |
5745 | } |
5746 | sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", | |
5747 | TRUE, FALSE, FALSE); | |
5748 | if (sh == NULL) | |
5749 | return FALSE; | |
5750 | if (sh->root.type == bfd_link_hash_new) | |
5751 | { | |
5752 | sh->root.type = bfd_link_hash_defined; | |
5753 | sh->root.u.def.section = htab->glink; | |
5754 | sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE; | |
5755 | sh->ref_regular = 1; | |
5756 | sh->def_regular = 1; | |
5757 | sh->ref_regular_nonweak = 1; | |
5758 | sh->forced_local = 1; | |
5759 | sh->non_elf = 0; | |
2ec55de3 | 5760 | sh->root.linker_def = 1; |
0ba07910 AM |
5761 | } |
5762 | } | |
d7128ce4 AM |
5763 | } |
5764 | ||
6177242a AM |
5765 | if (htab->glink != NULL |
5766 | && htab->glink->size != 0 | |
5767 | && htab->glink_eh_frame != NULL | |
9a2a56cc AM |
5768 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) |
5769 | && _bfd_elf_eh_frame_present (info)) | |
6177242a AM |
5770 | { |
5771 | s = htab->glink_eh_frame; | |
5772 | s->size = sizeof (glink_eh_frame_cie) + 20; | |
0e1862bb | 5773 | if (bfd_link_pic (info)) |
6177242a AM |
5774 | { |
5775 | s->size += 4; | |
5776 | if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256) | |
5777 | s->size += 4; | |
5778 | } | |
5779 | } | |
5780 | ||
25dbc73a AM |
5781 | /* We've now determined the sizes of the various dynamic sections. |
5782 | Allocate memory for them. */ | |
5783 | relocs = FALSE; | |
5784 | for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) | |
252b5132 | 5785 | { |
9d8504b1 PB |
5786 | bfd_boolean strip_section = TRUE; |
5787 | ||
25dbc73a AM |
5788 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
5789 | continue; | |
252b5132 | 5790 | |
ce558b89 AM |
5791 | if (s == htab->elf.splt |
5792 | || s == htab->elf.sgot) | |
25dbc73a | 5793 | { |
9d8504b1 PB |
5794 | /* We'd like to strip these sections if they aren't needed, but if |
5795 | we've exported dynamic symbols from them we must leave them. | |
5796 | It's too late to tell BFD to get rid of the symbols. */ | |
e054468f | 5797 | if (htab->elf.hplt != NULL) |
9d8504b1 | 5798 | strip_section = FALSE; |
25dbc73a AM |
5799 | /* Strip this section if we don't need it; see the |
5800 | comment below. */ | |
5801 | } | |
ce558b89 | 5802 | else if (s == htab->elf.iplt |
2d7ad24e | 5803 | || s == htab->pltlocal |
e054468f | 5804 | || s == htab->glink |
6177242a | 5805 | || s == htab->glink_eh_frame |
ce558b89 | 5806 | || s == htab->elf.sgotplt |
e054468f | 5807 | || s == htab->sbss |
9d19e4fd | 5808 | || s == htab->elf.sdynbss |
5474d94f | 5809 | || s == htab->elf.sdynrelro |
15bfcc77 | 5810 | || s == htab->dynsbss) |
25dbc73a | 5811 | { |
c9a2f333 | 5812 | /* Strip these too. */ |
25dbc73a | 5813 | } |
15bfcc77 AM |
5814 | else if (s == htab->sdata[0].section |
5815 | || s == htab->sdata[1].section) | |
5816 | { | |
5817 | strip_section = (s->flags & SEC_KEEP) == 0; | |
5818 | } | |
fd361982 | 5819 | else if (CONST_STRNEQ (bfd_section_name (s), ".rela")) |
25dbc73a | 5820 | { |
c456f082 | 5821 | if (s->size != 0) |
25dbc73a AM |
5822 | { |
5823 | /* Remember whether there are any relocation sections. */ | |
5824 | relocs = TRUE; | |
252b5132 | 5825 | |
25dbc73a AM |
5826 | /* We use the reloc_count field as a counter if we need |
5827 | to copy relocs into the output file. */ | |
5828 | s->reloc_count = 0; | |
252b5132 RH |
5829 | } |
5830 | } | |
25dbc73a AM |
5831 | else |
5832 | { | |
5833 | /* It's not one of our sections, so don't allocate space. */ | |
5834 | continue; | |
5835 | } | |
252b5132 | 5836 | |
9d8504b1 | 5837 | if (s->size == 0 && strip_section) |
25dbc73a | 5838 | { |
c456f082 AM |
5839 | /* If we don't need this section, strip it from the |
5840 | output file. This is mostly to handle .rela.bss and | |
5841 | .rela.plt. We must create both sections in | |
5842 | create_dynamic_sections, because they must be created | |
5843 | before the linker maps input sections to output | |
5844 | sections. The linker does that before | |
5845 | adjust_dynamic_symbol is called, and it is that | |
5846 | function which decides whether anything needs to go | |
5847 | into these sections. */ | |
8423293d | 5848 | s->flags |= SEC_EXCLUDE; |
25dbc73a AM |
5849 | continue; |
5850 | } | |
7fce784e | 5851 | |
d7128ce4 | 5852 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
644285ef AM |
5853 | continue; |
5854 | ||
25dbc73a AM |
5855 | /* Allocate memory for the section contents. */ |
5856 | s->contents = bfd_zalloc (htab->elf.dynobj, s->size); | |
5857 | if (s->contents == NULL) | |
5858 | return FALSE; | |
5859 | } | |
252b5132 | 5860 | |
25dbc73a | 5861 | if (htab->elf.dynamic_sections_created) |
7619e7c7 | 5862 | { |
25dbc73a AM |
5863 | /* Add some entries to the .dynamic section. We fill in the |
5864 | values later, in ppc_elf_finish_dynamic_sections, but we | |
5865 | must add the entries now so that we get the correct size for | |
5866 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5867 | dynamic linker and used by the debugger. */ | |
5868 | #define add_dynamic_entry(TAG, VAL) \ | |
5869 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
252b5132 | 5870 | |
0e1862bb | 5871 | if (bfd_link_executable (info)) |
7619e7c7 | 5872 | { |
25dbc73a AM |
5873 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
5874 | return FALSE; | |
7619e7c7 AM |
5875 | } |
5876 | ||
ce558b89 | 5877 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
7619e7c7 | 5878 | { |
25dbc73a AM |
5879 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
5880 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
5881 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5882 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
5883 | return FALSE; | |
5884 | } | |
7619e7c7 | 5885 | |
c7e17e05 AM |
5886 | if (htab->plt_type == PLT_NEW |
5887 | && htab->glink != NULL | |
5888 | && htab->glink->size != 0) | |
d7128ce4 | 5889 | { |
1fe44d79 | 5890 | if (!add_dynamic_entry (DT_PPC_GOT, 0)) |
d7128ce4 | 5891 | return FALSE; |
5446cbdf | 5892 | if (!htab->params->no_tls_get_addr_opt |
a7f2871e AM |
5893 | && htab->tls_get_addr != NULL |
5894 | && htab->tls_get_addr->plt.plist != NULL | |
e8910a83 | 5895 | && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS)) |
a7f2871e | 5896 | return FALSE; |
d7128ce4 AM |
5897 | } |
5898 | ||
25dbc73a AM |
5899 | if (relocs) |
5900 | { | |
5901 | if (!add_dynamic_entry (DT_RELA, 0) | |
5902 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5903 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
5904 | return FALSE; | |
5905 | } | |
7619e7c7 | 5906 | |
25dbc73a AM |
5907 | /* If any dynamic relocs apply to a read-only section, then we |
5908 | need a DT_TEXTREL entry. */ | |
5909 | if ((info->flags & DF_TEXTREL) == 0) | |
625af618 | 5910 | elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel, |
25dbc73a | 5911 | info); |
7619e7c7 | 5912 | |
25dbc73a AM |
5913 | if ((info->flags & DF_TEXTREL) != 0) |
5914 | { | |
5915 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5916 | return FALSE; | |
7619e7c7 | 5917 | } |
7a2b07ff NS |
5918 | if (htab->is_vxworks |
5919 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
5920 | return FALSE; | |
5921 | } | |
25dbc73a AM |
5922 | #undef add_dynamic_entry |
5923 | ||
7e01508c AM |
5924 | if (htab->glink_eh_frame != NULL |
5925 | && htab->glink_eh_frame->contents != NULL) | |
5926 | { | |
5927 | unsigned char *p = htab->glink_eh_frame->contents; | |
5928 | bfd_vma val; | |
5929 | ||
5930 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
5931 | /* CIE length (rewrite in case little-endian). */ | |
5932 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
5933 | p += sizeof (glink_eh_frame_cie); | |
5934 | /* FDE length. */ | |
5935 | val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie); | |
5936 | bfd_put_32 (htab->elf.dynobj, val, p); | |
5937 | p += 4; | |
5938 | /* CIE pointer. */ | |
5939 | val = p - htab->glink_eh_frame->contents; | |
5940 | bfd_put_32 (htab->elf.dynobj, val, p); | |
5941 | p += 4; | |
5942 | /* Offset to .glink. Set later. */ | |
5943 | p += 4; | |
5944 | /* .glink size. */ | |
5945 | bfd_put_32 (htab->elf.dynobj, htab->glink->size, p); | |
5946 | p += 4; | |
5947 | /* Augmentation. */ | |
5948 | p += 1; | |
5949 | ||
0e1862bb | 5950 | if (bfd_link_pic (info) |
7e01508c AM |
5951 | && htab->elf.dynamic_sections_created) |
5952 | { | |
5953 | bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2; | |
5954 | if (adv < 64) | |
5955 | *p++ = DW_CFA_advance_loc + adv; | |
5956 | else if (adv < 256) | |
5957 | { | |
5958 | *p++ = DW_CFA_advance_loc1; | |
5959 | *p++ = adv; | |
5960 | } | |
5961 | else if (adv < 65536) | |
5962 | { | |
5963 | *p++ = DW_CFA_advance_loc2; | |
5964 | bfd_put_16 (htab->elf.dynobj, adv, p); | |
5965 | p += 2; | |
5966 | } | |
5967 | else | |
5968 | { | |
5969 | *p++ = DW_CFA_advance_loc4; | |
5970 | bfd_put_32 (htab->elf.dynobj, adv, p); | |
5971 | p += 4; | |
5972 | } | |
5973 | *p++ = DW_CFA_register; | |
5974 | *p++ = 65; | |
5975 | p++; | |
5976 | *p++ = DW_CFA_advance_loc + 4; | |
5977 | *p++ = DW_CFA_restore_extended; | |
5978 | *p++ = 65; | |
5979 | } | |
5980 | BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4) | |
5981 | == htab->glink_eh_frame->size); | |
5982 | } | |
5983 | ||
7619e7c7 AM |
5984 | return TRUE; |
5985 | } | |
0eb4a168 | 5986 | |
93d1b056 AM |
5987 | /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output |
5988 | if it looks like nothing is using them. */ | |
5989 | ||
5990 | static void | |
5991 | maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect) | |
5992 | { | |
5993 | struct elf_link_hash_entry *sda = lsect->sym; | |
5994 | ||
5995 | if (sda != NULL && !sda->ref_regular && sda->dynindx == -1) | |
5996 | { | |
5997 | asection *s; | |
5998 | ||
5999 | s = bfd_get_section_by_name (output_bfd, lsect->name); | |
6000 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6001 | { | |
6002 | s = bfd_get_section_by_name (output_bfd, lsect->bss_name); | |
6003 | if (s == NULL || bfd_section_removed_from_list (output_bfd, s)) | |
6004 | { | |
6005 | sda->def_regular = 0; | |
6006 | /* This is somewhat magic. See elf_link_output_extsym. */ | |
6007 | sda->ref_dynamic = 1; | |
6008 | sda->forced_local = 0; | |
6009 | } | |
6010 | } | |
6011 | } | |
6012 | } | |
6013 | ||
6014 | void | |
6015 | ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info) | |
6016 | { | |
6017 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6018 | ||
6019 | if (htab != NULL) | |
6020 | { | |
6021 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]); | |
6022 | maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]); | |
6023 | } | |
6024 | } | |
6025 | ||
6026 | ||
0eb4a168 AM |
6027 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
6028 | ||
6029 | static bfd_boolean | |
6030 | ppc_elf_hash_symbol (struct elf_link_hash_entry *h) | |
6031 | { | |
6032 | if (h->plt.plist != NULL | |
6033 | && !h->def_regular | |
6034 | && (!h->pointer_equality_needed | |
6035 | || !h->ref_regular_nonweak)) | |
6036 | return FALSE; | |
6037 | ||
6038 | return _bfd_elf_hash_symbol (h); | |
6039 | } | |
25dbc73a AM |
6040 | \f |
6041 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
6042 | ||
01017ef8 NS |
6043 | /* Relaxation trampolines. r12 is available for clobbering (r11, is |
6044 | used for some functions that are allowed to break the ABI). */ | |
25dbc73a AM |
6045 | static const int shared_stub_entry[] = |
6046 | { | |
6047 | 0x7c0802a6, /* mflr 0 */ | |
6048 | 0x429f0005, /* bcl 20, 31, .Lxxx */ | |
01017ef8 NS |
6049 | 0x7d8802a6, /* mflr 12 */ |
6050 | 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */ | |
53291d1f | 6051 | 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */ |
25dbc73a | 6052 | 0x7c0803a6, /* mtlr 0 */ |
01017ef8 | 6053 | 0x7d8903a6, /* mtctr 12 */ |
25dbc73a AM |
6054 | 0x4e800420, /* bctr */ |
6055 | }; | |
6056 | ||
6057 | static const int stub_entry[] = | |
6058 | { | |
01017ef8 NS |
6059 | 0x3d800000, /* lis 12,xxx@ha */ |
6060 | 0x398c0000, /* addi 12,12,xxx@l */ | |
6061 | 0x7d8903a6, /* mtctr 12 */ | |
25dbc73a AM |
6062 | 0x4e800420, /* bctr */ |
6063 | }; | |
6064 | ||
5446cbdf AM |
6065 | struct ppc_elf_relax_info |
6066 | { | |
6067 | unsigned int workaround_size; | |
d3e454b9 | 6068 | unsigned int picfixup_size; |
5446cbdf AM |
6069 | }; |
6070 | ||
6071 | /* This function implements long branch trampolines, and the ppc476 | |
6072 | icache bug workaround. Any section needing trampolines or patch | |
6073 | space for the workaround has its size extended so that we can | |
53291d1f | 6074 | add trampolines at the end of the section. */ |
5446cbdf | 6075 | |
25dbc73a AM |
6076 | static bfd_boolean |
6077 | ppc_elf_relax_section (bfd *abfd, | |
6078 | asection *isec, | |
6079 | struct bfd_link_info *link_info, | |
6080 | bfd_boolean *again) | |
6081 | { | |
d3e454b9 | 6082 | struct one_branch_fixup |
25dbc73a | 6083 | { |
d3e454b9 | 6084 | struct one_branch_fixup *next; |
25dbc73a | 6085 | asection *tsec; |
01017ef8 NS |
6086 | /* Final link, can use the symbol offset. For a |
6087 | relocatable link we use the symbol's index. */ | |
25dbc73a AM |
6088 | bfd_vma toff; |
6089 | bfd_vma trampoff; | |
6090 | }; | |
7619e7c7 | 6091 | |
25dbc73a AM |
6092 | Elf_Internal_Shdr *symtab_hdr; |
6093 | bfd_byte *contents = NULL; | |
6094 | Elf_Internal_Sym *isymbuf = NULL; | |
6095 | Elf_Internal_Rela *internal_relocs = NULL; | |
5446cbdf | 6096 | Elf_Internal_Rela *irel, *irelend = NULL; |
d3e454b9 | 6097 | struct one_branch_fixup *branch_fixups = NULL; |
5446cbdf | 6098 | struct ppc_elf_relax_info *relax_info = NULL; |
9bc4e62b | 6099 | unsigned changes = 0; |
5446cbdf | 6100 | bfd_boolean workaround_change; |
d7128ce4 | 6101 | struct ppc_elf_link_hash_table *htab; |
d3e454b9 | 6102 | bfd_size_type trampbase, trampoff, newsize, picfixup_size; |
a6aa5195 | 6103 | asection *got2; |
50248c89 | 6104 | bfd_boolean maybe_pasted; |
7619e7c7 | 6105 | |
25dbc73a | 6106 | *again = FALSE; |
7619e7c7 | 6107 | |
5446cbdf | 6108 | /* No need to do anything with non-alloc or non-code sections. */ |
c87b5a93 | 6109 | if ((isec->flags & SEC_ALLOC) == 0 |
a8ad78a7 | 6110 | || (isec->flags & SEC_CODE) == 0 |
5446cbdf AM |
6111 | || (isec->flags & SEC_LINKER_CREATED) != 0 |
6112 | || isec->size < 4) | |
25dbc73a | 6113 | return TRUE; |
7619e7c7 | 6114 | |
c8a1f254 NS |
6115 | /* We cannot represent the required PIC relocs in the output, so don't |
6116 | do anything. The linker doesn't support mixing -shared and -r | |
6117 | anyway. */ | |
0e1862bb | 6118 | if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info)) |
795bc6b3 | 6119 | return TRUE; |
5b914448 | 6120 | |
5446cbdf AM |
6121 | htab = ppc_elf_hash_table (link_info); |
6122 | if (htab == NULL) | |
6123 | return TRUE; | |
6124 | ||
6125 | isec->size = (isec->size + 3) & -4; | |
6126 | if (isec->rawsize == 0) | |
6127 | isec->rawsize = isec->size; | |
6128 | trampbase = isec->size; | |
6129 | ||
53291d1f AM |
6130 | BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE |
6131 | || isec->sec_info_type == SEC_INFO_TYPE_TARGET); | |
6132 | isec->sec_info_type = SEC_INFO_TYPE_TARGET; | |
6133 | ||
d3e454b9 AM |
6134 | if (htab->params->ppc476_workaround |
6135 | || htab->params->pic_fixup > 0) | |
5446cbdf AM |
6136 | { |
6137 | if (elf_section_data (isec)->sec_info == NULL) | |
6138 | { | |
5446cbdf AM |
6139 | elf_section_data (isec)->sec_info |
6140 | = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info)); | |
6141 | if (elf_section_data (isec)->sec_info == NULL) | |
6142 | return FALSE; | |
6143 | } | |
6144 | relax_info = elf_section_data (isec)->sec_info; | |
6145 | trampbase -= relax_info->workaround_size; | |
6146 | } | |
6147 | ||
50248c89 AM |
6148 | maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0 |
6149 | || strcmp (isec->output_section->name, ".fini") == 0); | |
25dbc73a | 6150 | /* Space for a branch around any trampolines. */ |
5446cbdf AM |
6151 | trampoff = trampbase; |
6152 | if (maybe_pasted && trampbase == isec->rawsize) | |
50248c89 | 6153 | trampoff += 4; |
7619e7c7 | 6154 | |
0ffa91dd | 6155 | symtab_hdr = &elf_symtab_hdr (abfd); |
d3e454b9 AM |
6156 | picfixup_size = 0; |
6157 | if (htab->params->branch_trampolines | |
6158 | || htab->params->pic_fixup > 0) | |
7619e7c7 | 6159 | { |
5446cbdf AM |
6160 | /* Get a copy of the native relocations. */ |
6161 | if (isec->reloc_count != 0) | |
25dbc73a | 6162 | { |
5446cbdf AM |
6163 | internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, |
6164 | link_info->keep_memory); | |
6165 | if (internal_relocs == NULL) | |
6166 | goto error_return; | |
25dbc73a | 6167 | } |
7619e7c7 | 6168 | |
5446cbdf AM |
6169 | got2 = bfd_get_section_by_name (abfd, ".got2"); |
6170 | ||
6171 | irelend = internal_relocs + isec->reloc_count; | |
6172 | for (irel = internal_relocs; irel < irelend; irel++) | |
25dbc73a | 6173 | { |
5446cbdf AM |
6174 | unsigned long r_type = ELF32_R_TYPE (irel->r_info); |
6175 | bfd_vma toff, roff; | |
6176 | asection *tsec; | |
d3e454b9 | 6177 | struct one_branch_fixup *f; |
5446cbdf | 6178 | size_t insn_offset = 0; |
d3e454b9 | 6179 | bfd_vma max_branch_offset = 0, val; |
5446cbdf AM |
6180 | bfd_byte *hit_addr; |
6181 | unsigned long t0; | |
6182 | struct elf_link_hash_entry *h; | |
49c09209 | 6183 | Elf_Internal_Sym *isym; |
5446cbdf AM |
6184 | struct plt_entry **plist; |
6185 | unsigned char sym_type; | |
6186 | ||
6187 | switch (r_type) | |
6188 | { | |
6189 | case R_PPC_REL24: | |
6190 | case R_PPC_LOCAL24PC: | |
6191 | case R_PPC_PLTREL24: | |
23cedd1d | 6192 | case R_PPC_PLTCALL: |
5446cbdf AM |
6193 | max_branch_offset = 1 << 25; |
6194 | break; | |
6195 | ||
6196 | case R_PPC_REL14: | |
6197 | case R_PPC_REL14_BRTAKEN: | |
6198 | case R_PPC_REL14_BRNTAKEN: | |
6199 | max_branch_offset = 1 << 15; | |
6200 | break; | |
7fce784e | 6201 | |
d3e454b9 AM |
6202 | case R_PPC_ADDR16_HA: |
6203 | if (htab->params->pic_fixup > 0) | |
6204 | break; | |
6205 | continue; | |
6206 | ||
5446cbdf AM |
6207 | default: |
6208 | continue; | |
6209 | } | |
6210 | ||
6211 | /* Get the value of the symbol referred to by the reloc. */ | |
49c09209 AM |
6212 | if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf, |
6213 | ELF32_R_SYM (irel->r_info), abfd)) | |
6214 | goto error_return; | |
5446cbdf | 6215 | |
49c09209 AM |
6216 | if (isym != NULL) |
6217 | { | |
6218 | if (tsec != NULL) | |
6219 | ; | |
5446cbdf AM |
6220 | else if (isym->st_shndx == SHN_ABS) |
6221 | tsec = bfd_abs_section_ptr; | |
49199304 AM |
6222 | else |
6223 | continue; | |
5446cbdf AM |
6224 | |
6225 | toff = isym->st_value; | |
6226 | sym_type = ELF_ST_TYPE (isym->st_info); | |
25dbc73a | 6227 | } |
25dbc73a | 6228 | else |
5446cbdf | 6229 | { |
49c09209 AM |
6230 | if (tsec != NULL) |
6231 | toff = h->root.u.def.value; | |
5446cbdf AM |
6232 | else if (h->root.type == bfd_link_hash_undefined |
6233 | || h->root.type == bfd_link_hash_undefweak) | |
6234 | { | |
49c09209 AM |
6235 | unsigned long indx; |
6236 | ||
6237 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
5446cbdf | 6238 | tsec = bfd_und_section_ptr; |
0e1862bb | 6239 | toff = bfd_link_relocatable (link_info) ? indx : 0; |
5446cbdf AM |
6240 | } |
6241 | else | |
6242 | continue; | |
6243 | ||
9f7552cf AM |
6244 | /* If this branch is to __tls_get_addr then we may later |
6245 | optimise away the call. We won't be needing a long- | |
6246 | branch stub in that case. */ | |
0e1862bb | 6247 | if (bfd_link_executable (link_info) |
9f7552cf AM |
6248 | && h == htab->tls_get_addr |
6249 | && irel != internal_relocs) | |
6250 | { | |
6251 | unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info); | |
6252 | unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info); | |
6253 | unsigned int tls_mask = 0; | |
6254 | ||
6255 | /* The previous reloc should be one of R_PPC_TLSGD or | |
6256 | R_PPC_TLSLD, or for older object files, a reloc | |
6257 | on the __tls_get_addr arg setup insn. Get tls | |
6258 | mask bits from the symbol on that reloc. */ | |
6259 | if (t_symndx < symtab_hdr->sh_info) | |
6260 | { | |
6261 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); | |
6262 | ||
6263 | if (local_got_offsets != NULL) | |
6264 | { | |
6265 | struct plt_entry **local_plt = (struct plt_entry **) | |
6266 | (local_got_offsets + symtab_hdr->sh_info); | |
6267 | char *lgot_masks = (char *) | |
6268 | (local_plt + symtab_hdr->sh_info); | |
6269 | tls_mask = lgot_masks[t_symndx]; | |
6270 | } | |
6271 | } | |
6272 | else | |
6273 | { | |
6274 | struct elf_link_hash_entry *th | |
6275 | = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info]; | |
6276 | ||
6277 | while (th->root.type == bfd_link_hash_indirect | |
6278 | || th->root.type == bfd_link_hash_warning) | |
6279 | th = (struct elf_link_hash_entry *) th->root.u.i.link; | |
6280 | ||
6281 | tls_mask | |
6282 | = ((struct ppc_elf_link_hash_entry *) th)->tls_mask; | |
6283 | } | |
6284 | ||
6285 | /* The mask bits tell us if the call will be | |
6286 | optimised away. */ | |
6287 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 | |
6288 | && (t_rtype == R_PPC_TLSGD | |
6289 | || t_rtype == R_PPC_GOT_TLSGD16 | |
6290 | || t_rtype == R_PPC_GOT_TLSGD16_LO)) | |
6291 | continue; | |
6292 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 | |
6293 | && (t_rtype == R_PPC_TLSLD | |
6294 | || t_rtype == R_PPC_GOT_TLSLD16 | |
6295 | || t_rtype == R_PPC_GOT_TLSLD16_LO)) | |
6296 | continue; | |
6297 | } | |
6298 | ||
5446cbdf AM |
6299 | sym_type = h->type; |
6300 | } | |
7619e7c7 | 6301 | |
d3e454b9 AM |
6302 | if (r_type == R_PPC_ADDR16_HA) |
6303 | { | |
6304 | if (h != NULL | |
6305 | && !h->def_regular | |
6306 | && h->protected_def | |
6307 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
6308 | && ppc_elf_hash_entry (h)->has_addr16_lo) | |
6309 | picfixup_size += 12; | |
6310 | continue; | |
6311 | } | |
6312 | ||
5446cbdf AM |
6313 | /* The condition here under which we call find_plt_ent must |
6314 | match that in relocate_section. If we call find_plt_ent here | |
6315 | but not in relocate_section, or vice versa, then the branch | |
6316 | destination used here may be incorrect. */ | |
6317 | plist = NULL; | |
6318 | if (h != NULL) | |
25dbc73a | 6319 | { |
5446cbdf AM |
6320 | /* We know is_branch_reloc (r_type) is true. */ |
6321 | if (h->type == STT_GNU_IFUNC | |
6322 | || r_type == R_PPC_PLTREL24) | |
6323 | plist = &h->plt.plist; | |
25dbc73a | 6324 | } |
5446cbdf AM |
6325 | else if (sym_type == STT_GNU_IFUNC |
6326 | && elf_local_got_offsets (abfd) != NULL) | |
c8a1f254 | 6327 | { |
5446cbdf AM |
6328 | bfd_vma *local_got_offsets = elf_local_got_offsets (abfd); |
6329 | struct plt_entry **local_plt = (struct plt_entry **) | |
6330 | (local_got_offsets + symtab_hdr->sh_info); | |
6331 | plist = local_plt + ELF32_R_SYM (irel->r_info); | |
c8a1f254 | 6332 | } |
5446cbdf | 6333 | if (plist != NULL) |
a9585d22 | 6334 | { |
5446cbdf AM |
6335 | bfd_vma addend = 0; |
6336 | struct plt_entry *ent; | |
6337 | ||
0e1862bb | 6338 | if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info)) |
5446cbdf AM |
6339 | addend = irel->r_addend; |
6340 | ent = find_plt_ent (plist, got2, addend); | |
6341 | if (ent != NULL) | |
a9585d22 | 6342 | { |
5446cbdf AM |
6343 | if (htab->plt_type == PLT_NEW |
6344 | || h == NULL | |
6345 | || !htab->elf.dynamic_sections_created | |
6346 | || h->dynindx == -1) | |
6347 | { | |
6348 | tsec = htab->glink; | |
6349 | toff = ent->glink_offset; | |
6350 | } | |
6351 | else | |
6352 | { | |
ce558b89 | 6353 | tsec = htab->elf.splt; |
5446cbdf AM |
6354 | toff = ent->plt.offset; |
6355 | } | |
de972ffa AM |
6356 | } |
6357 | } | |
de972ffa | 6358 | |
5446cbdf AM |
6359 | /* If the branch and target are in the same section, you have |
6360 | no hope of adding stubs. We'll error out later should the | |
6361 | branch overflow. */ | |
6362 | if (tsec == isec) | |
6363 | continue; | |
25dbc73a | 6364 | |
49199304 AM |
6365 | /* toff is used for the symbol index when the symbol is |
6366 | undefined and we're doing a relocatable link, so we can't | |
6367 | support addends. It would be possible to do so by | |
6368 | putting the addend in one_branch_fixup but addends on | |
6369 | branches are rare so it hardly seems worth supporting. */ | |
6370 | if (bfd_link_relocatable (link_info) | |
6371 | && tsec == bfd_und_section_ptr | |
6372 | && r_type != R_PPC_PLTREL24 | |
6373 | && irel->r_addend != 0) | |
6374 | continue; | |
6375 | ||
5446cbdf AM |
6376 | /* There probably isn't any reason to handle symbols in |
6377 | SEC_MERGE sections; SEC_MERGE doesn't seem a likely | |
6378 | attribute for a code section, and we are only looking at | |
6379 | branches. However, implement it correctly here as a | |
6380 | reference for other target relax_section functions. */ | |
6381 | if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
6382 | { | |
6383 | /* At this stage in linking, no SEC_MERGE symbol has been | |
6384 | adjusted, so all references to such symbols need to be | |
6385 | passed through _bfd_merged_section_offset. (Later, in | |
6386 | relocate_section, all SEC_MERGE symbols *except* for | |
6387 | section symbols have been adjusted.) | |
6388 | ||
6389 | gas may reduce relocations against symbols in SEC_MERGE | |
6390 | sections to a relocation against the section symbol when | |
6391 | the original addend was zero. When the reloc is against | |
6392 | a section symbol we should include the addend in the | |
6393 | offset passed to _bfd_merged_section_offset, since the | |
6394 | location of interest is the original symbol. On the | |
6395 | other hand, an access to "sym+addend" where "sym" is not | |
6396 | a section symbol should not include the addend; Such an | |
6397 | access is presumed to be an offset from "sym"; The | |
6398 | location of interest is just "sym". */ | |
49199304 AM |
6399 | if (sym_type == STT_SECTION |
6400 | && r_type != R_PPC_PLTREL24) | |
5446cbdf AM |
6401 | toff += irel->r_addend; |
6402 | ||
6403 | toff | |
6404 | = _bfd_merged_section_offset (abfd, &tsec, | |
6405 | elf_section_data (tsec)->sec_info, | |
6406 | toff); | |
6407 | ||
49199304 AM |
6408 | if (sym_type != STT_SECTION |
6409 | && r_type != R_PPC_PLTREL24) | |
5446cbdf AM |
6410 | toff += irel->r_addend; |
6411 | } | |
6412 | /* PLTREL24 addends are special. */ | |
6413 | else if (r_type != R_PPC_PLTREL24) | |
25dbc73a | 6414 | toff += irel->r_addend; |
7619e7c7 | 6415 | |
5446cbdf | 6416 | /* Attempted -shared link of non-pic code loses. */ |
0e1862bb | 6417 | if ((!bfd_link_relocatable (link_info) |
5446cbdf AM |
6418 | && tsec == bfd_und_section_ptr) |
6419 | || tsec->output_section == NULL | |
6420 | || (tsec->owner != NULL | |
6421 | && (tsec->owner->flags & BFD_PLUGIN) != 0)) | |
6422 | continue; | |
7619e7c7 | 6423 | |
5446cbdf | 6424 | roff = irel->r_offset; |
7de713b9 | 6425 | |
49199304 AM |
6426 | /* Avoid creating a lot of unnecessary fixups when |
6427 | relocatable if the output section size is such that a | |
6428 | fixup can be created at final link. | |
6429 | The max_branch_offset adjustment allows for some number | |
6430 | of other fixups being needed at final link. */ | |
6431 | if (bfd_link_relocatable (link_info) | |
6432 | && (isec->output_section->rawsize - (isec->output_offset + roff) | |
6433 | < max_branch_offset - (max_branch_offset >> 4))) | |
6434 | continue; | |
6435 | ||
5446cbdf AM |
6436 | /* If the branch is in range, no need to do anything. */ |
6437 | if (tsec != bfd_und_section_ptr | |
0e1862bb | 6438 | && (!bfd_link_relocatable (link_info) |
5446cbdf AM |
6439 | /* A relocatable link may have sections moved during |
6440 | final link, so do not presume they remain in range. */ | |
6441 | || tsec->output_section == isec->output_section)) | |
6442 | { | |
6443 | bfd_vma symaddr, reladdr; | |
7619e7c7 | 6444 | |
5446cbdf AM |
6445 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
6446 | reladdr = isec->output_section->vma + isec->output_offset + roff; | |
6447 | if (symaddr - reladdr + max_branch_offset | |
6448 | < 2 * max_branch_offset) | |
6449 | continue; | |
6450 | } | |
01017ef8 | 6451 | |
5446cbdf | 6452 | /* Look for an existing fixup to this address. */ |
d3e454b9 | 6453 | for (f = branch_fixups; f ; f = f->next) |
5446cbdf AM |
6454 | if (f->tsec == tsec && f->toff == toff) |
6455 | break; | |
252b5132 | 6456 | |
5446cbdf AM |
6457 | if (f == NULL) |
6458 | { | |
6459 | size_t size; | |
6460 | unsigned long stub_rtype; | |
25dbc73a | 6461 | |
5446cbdf AM |
6462 | val = trampoff - roff; |
6463 | if (val >= max_branch_offset) | |
6464 | /* Oh dear, we can't reach a trampoline. Don't try to add | |
6465 | one. We'll report an error later. */ | |
6466 | continue; | |
252b5132 | 6467 | |
0e1862bb | 6468 | if (bfd_link_pic (link_info)) |
5446cbdf AM |
6469 | { |
6470 | size = 4 * ARRAY_SIZE (shared_stub_entry); | |
6471 | insn_offset = 12; | |
6472 | } | |
6473 | else | |
6474 | { | |
6475 | size = 4 * ARRAY_SIZE (stub_entry); | |
6476 | insn_offset = 0; | |
6477 | } | |
6478 | stub_rtype = R_PPC_RELAX; | |
ce558b89 | 6479 | if (tsec == htab->elf.splt |
5446cbdf AM |
6480 | || tsec == htab->glink) |
6481 | { | |
6482 | stub_rtype = R_PPC_RELAX_PLT; | |
6483 | if (r_type == R_PPC_PLTREL24) | |
6484 | stub_rtype = R_PPC_RELAX_PLTREL24; | |
6485 | } | |
252b5132 | 6486 | |
5446cbdf AM |
6487 | /* Hijack the old relocation. Since we need two |
6488 | relocations for this use a "composite" reloc. */ | |
6489 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
6490 | stub_rtype); | |
6491 | irel->r_offset = trampoff + insn_offset; | |
6492 | if (r_type == R_PPC_PLTREL24 | |
6493 | && stub_rtype != R_PPC_RELAX_PLTREL24) | |
6494 | irel->r_addend = 0; | |
6495 | ||
6496 | /* Record the fixup so we don't do it again this section. */ | |
6497 | f = bfd_malloc (sizeof (*f)); | |
d3e454b9 | 6498 | f->next = branch_fixups; |
5446cbdf AM |
6499 | f->tsec = tsec; |
6500 | f->toff = toff; | |
6501 | f->trampoff = trampoff; | |
d3e454b9 | 6502 | branch_fixups = f; |
5446cbdf AM |
6503 | |
6504 | trampoff += size; | |
6505 | changes++; | |
25dbc73a AM |
6506 | } |
6507 | else | |
6508 | { | |
5446cbdf AM |
6509 | val = f->trampoff - roff; |
6510 | if (val >= max_branch_offset) | |
6511 | continue; | |
252b5132 | 6512 | |
5446cbdf AM |
6513 | /* Nop out the reloc, since we're finalizing things here. */ |
6514 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
6515 | } | |
252b5132 | 6516 | |
5446cbdf AM |
6517 | /* Get the section contents. */ |
6518 | if (contents == NULL) | |
25dbc73a | 6519 | { |
5446cbdf AM |
6520 | /* Get cached copy if it exists. */ |
6521 | if (elf_section_data (isec)->this_hdr.contents != NULL) | |
6522 | contents = elf_section_data (isec)->this_hdr.contents; | |
25dbc73a | 6523 | /* Go get them off disk. */ |
5446cbdf | 6524 | else if (!bfd_malloc_and_get_section (abfd, isec, &contents)) |
25dbc73a AM |
6525 | goto error_return; |
6526 | } | |
252b5132 | 6527 | |
5446cbdf AM |
6528 | /* Fix up the existing branch to hit the trampoline. */ |
6529 | hit_addr = contents + roff; | |
6530 | switch (r_type) | |
6531 | { | |
6532 | case R_PPC_REL24: | |
6533 | case R_PPC_LOCAL24PC: | |
6534 | case R_PPC_PLTREL24: | |
6535 | t0 = bfd_get_32 (abfd, hit_addr); | |
6536 | t0 &= ~0x3fffffc; | |
6537 | t0 |= val & 0x3fffffc; | |
6538 | bfd_put_32 (abfd, t0, hit_addr); | |
6539 | break; | |
252b5132 | 6540 | |
5446cbdf AM |
6541 | case R_PPC_REL14: |
6542 | case R_PPC_REL14_BRTAKEN: | |
6543 | case R_PPC_REL14_BRNTAKEN: | |
6544 | t0 = bfd_get_32 (abfd, hit_addr); | |
6545 | t0 &= ~0xfffc; | |
6546 | t0 |= val & 0xfffc; | |
6547 | bfd_put_32 (abfd, t0, hit_addr); | |
6548 | break; | |
6549 | } | |
25dbc73a | 6550 | } |
252b5132 | 6551 | |
d3e454b9 | 6552 | while (branch_fixups != NULL) |
25dbc73a | 6553 | { |
d3e454b9 AM |
6554 | struct one_branch_fixup *f = branch_fixups; |
6555 | branch_fixups = branch_fixups->next; | |
25dbc73a AM |
6556 | free (f); |
6557 | } | |
5446cbdf | 6558 | } |
252b5132 | 6559 | |
5446cbdf AM |
6560 | workaround_change = FALSE; |
6561 | newsize = trampoff; | |
795bc6b3 | 6562 | if (htab->params->ppc476_workaround |
0e1862bb | 6563 | && (!bfd_link_relocatable (link_info) |
795bc6b3 | 6564 | || isec->output_section->alignment_power >= htab->params->pagesize_p2)) |
5446cbdf AM |
6565 | { |
6566 | bfd_vma addr, end_addr; | |
6567 | unsigned int crossings; | |
795bc6b3 | 6568 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf AM |
6569 | |
6570 | addr = isec->output_section->vma + isec->output_offset; | |
6128f9cf | 6571 | end_addr = addr + trampoff; |
5446cbdf | 6572 | addr &= -pagesize; |
795bc6b3 | 6573 | crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; |
5446cbdf AM |
6574 | if (crossings != 0) |
6575 | { | |
6576 | /* Keep space aligned, to ensure the patch code itself does | |
6577 | not cross a page. Don't decrease size calculated on a | |
6578 | previous pass as otherwise we might never settle on a layout. */ | |
1e269e9b | 6579 | newsize = 15 - ((end_addr - 1) & 15); |
5446cbdf AM |
6580 | newsize += crossings * 16; |
6581 | if (relax_info->workaround_size < newsize) | |
6582 | { | |
6583 | relax_info->workaround_size = newsize; | |
6584 | workaround_change = TRUE; | |
5446cbdf AM |
6585 | } |
6586 | /* Ensure relocate_section is called. */ | |
6587 | isec->flags |= SEC_RELOC; | |
6588 | } | |
6589 | newsize = trampoff + relax_info->workaround_size; | |
6590 | } | |
6591 | ||
d3e454b9 AM |
6592 | if (htab->params->pic_fixup > 0) |
6593 | { | |
6594 | picfixup_size -= relax_info->picfixup_size; | |
6595 | if (picfixup_size != 0) | |
6596 | relax_info->picfixup_size += picfixup_size; | |
6597 | newsize += relax_info->picfixup_size; | |
6598 | } | |
6599 | ||
6600 | if (changes != 0 || picfixup_size != 0 || workaround_change) | |
5446cbdf AM |
6601 | isec->size = newsize; |
6602 | ||
25dbc73a AM |
6603 | if (isymbuf != NULL |
6604 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 | 6605 | { |
25dbc73a AM |
6606 | if (! link_info->keep_memory) |
6607 | free (isymbuf); | |
252b5132 | 6608 | else |
25dbc73a AM |
6609 | { |
6610 | /* Cache the symbols for elf_link_input_bfd. */ | |
6611 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
6612 | } | |
252b5132 RH |
6613 | } |
6614 | ||
25dbc73a AM |
6615 | if (contents != NULL |
6616 | && elf_section_data (isec)->this_hdr.contents != contents) | |
6617 | { | |
53291d1f | 6618 | if (!changes && !link_info->keep_memory) |
25dbc73a AM |
6619 | free (contents); |
6620 | else | |
6621 | { | |
6622 | /* Cache the section contents for elf_link_input_bfd. */ | |
6623 | elf_section_data (isec)->this_hdr.contents = contents; | |
6624 | } | |
6625 | } | |
252b5132 | 6626 | |
d3e454b9 | 6627 | changes += picfixup_size; |
9bc4e62b | 6628 | if (changes != 0) |
25dbc73a | 6629 | { |
9bc4e62b NS |
6630 | /* Append sufficient NOP relocs so we can write out relocation |
6631 | information for the trampolines. */ | |
d4730f92 | 6632 | Elf_Internal_Shdr *rel_hdr; |
9bc4e62b NS |
6633 | Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count) |
6634 | * sizeof (*new_relocs)); | |
6635 | unsigned ix; | |
5b914448 | 6636 | |
9bc4e62b NS |
6637 | if (!new_relocs) |
6638 | goto error_return; | |
6639 | memcpy (new_relocs, internal_relocs, | |
6640 | isec->reloc_count * sizeof (*new_relocs)); | |
6641 | for (ix = changes; ix--;) | |
6642 | { | |
6643 | irel = new_relocs + ix + isec->reloc_count; | |
6644 | ||
6645 | irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); | |
6646 | } | |
6647 | if (internal_relocs != elf_section_data (isec)->relocs) | |
25dbc73a | 6648 | free (internal_relocs); |
9bc4e62b NS |
6649 | elf_section_data (isec)->relocs = new_relocs; |
6650 | isec->reloc_count += changes; | |
d4730f92 BS |
6651 | rel_hdr = _bfd_elf_single_rel_hdr (isec); |
6652 | rel_hdr->sh_size += changes * rel_hdr->sh_entsize; | |
25dbc73a | 6653 | } |
5446cbdf AM |
6654 | else if (internal_relocs != NULL |
6655 | && elf_section_data (isec)->relocs != internal_relocs) | |
9bc4e62b | 6656 | free (internal_relocs); |
252b5132 | 6657 | |
5446cbdf | 6658 | *again = changes != 0 || workaround_change; |
b34976b6 | 6659 | return TRUE; |
25dbc73a AM |
6660 | |
6661 | error_return: | |
d3e454b9 | 6662 | while (branch_fixups != NULL) |
5446cbdf | 6663 | { |
d3e454b9 AM |
6664 | struct one_branch_fixup *f = branch_fixups; |
6665 | branch_fixups = branch_fixups->next; | |
5446cbdf AM |
6666 | free (f); |
6667 | } | |
25dbc73a AM |
6668 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
6669 | free (isymbuf); | |
6670 | if (contents != NULL | |
6671 | && elf_section_data (isec)->this_hdr.contents != contents) | |
6672 | free (contents); | |
6673 | if (internal_relocs != NULL | |
6674 | && elf_section_data (isec)->relocs != internal_relocs) | |
6675 | free (internal_relocs); | |
6676 | return FALSE; | |
252b5132 | 6677 | } |
252b5132 | 6678 | \f |
8a696751 AM |
6679 | /* What to do when ld finds relocations against symbols defined in |
6680 | discarded sections. */ | |
6681 | ||
6682 | static unsigned int | |
6683 | ppc_elf_action_discarded (asection *sec) | |
6684 | { | |
6685 | if (strcmp (".fixup", sec->name) == 0) | |
6686 | return 0; | |
6687 | ||
6688 | if (strcmp (".got2", sec->name) == 0) | |
6689 | return 0; | |
6690 | ||
6691 | return _bfd_elf_default_action_discarded (sec); | |
6692 | } | |
c9a2f333 | 6693 | \f |
25dbc73a | 6694 | /* Fill in the address for a pointer generated in a linker section. */ |
252b5132 | 6695 | |
25dbc73a | 6696 | static bfd_vma |
76750a2f | 6697 | elf_finish_pointer_linker_section (bfd *input_bfd, |
25dbc73a AM |
6698 | elf_linker_section_t *lsect, |
6699 | struct elf_link_hash_entry *h, | |
6700 | bfd_vma relocation, | |
2bb04cf2 | 6701 | const Elf_Internal_Rela *rel) |
25dbc73a AM |
6702 | { |
6703 | elf_linker_section_pointers_t *linker_section_ptr; | |
252b5132 | 6704 | |
25dbc73a | 6705 | BFD_ASSERT (lsect != NULL); |
252b5132 | 6706 | |
25dbc73a | 6707 | if (h != NULL) |
252b5132 | 6708 | { |
25dbc73a AM |
6709 | /* Handle global symbol. */ |
6710 | struct ppc_elf_link_hash_entry *eh; | |
252b5132 | 6711 | |
25dbc73a | 6712 | eh = (struct ppc_elf_link_hash_entry *) h; |
76750a2f AM |
6713 | BFD_ASSERT (eh->elf.def_regular); |
6714 | linker_section_ptr = eh->linker_section_pointer; | |
25dbc73a AM |
6715 | } |
6716 | else | |
6717 | { | |
6718 | /* Handle local symbol. */ | |
6719 | unsigned long r_symndx = ELF32_R_SYM (rel->r_info); | |
76750a2f | 6720 | |
0c8d6e5c | 6721 | BFD_ASSERT (is_ppc_elf (input_bfd)); |
25dbc73a | 6722 | BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); |
76750a2f AM |
6723 | linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx]; |
6724 | } | |
252b5132 | 6725 | |
76750a2f AM |
6726 | linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr, |
6727 | rel->r_addend, | |
6728 | lsect); | |
6729 | BFD_ASSERT (linker_section_ptr != NULL); | |
25dbc73a | 6730 | |
76750a2f AM |
6731 | /* Offset will always be a multiple of four, so use the bottom bit |
6732 | as a "written" flag. */ | |
6733 | if ((linker_section_ptr->offset & 1) == 0) | |
6734 | { | |
6735 | bfd_put_32 (lsect->section->owner, | |
6736 | relocation + linker_section_ptr->addend, | |
6737 | lsect->section->contents + linker_section_ptr->offset); | |
6738 | linker_section_ptr->offset += 1; | |
252b5132 RH |
6739 | } |
6740 | ||
bd6c6e2b AM |
6741 | relocation = (lsect->section->output_section->vma |
6742 | + lsect->section->output_offset | |
76750a2f | 6743 | + linker_section_ptr->offset - 1 |
bd6c6e2b | 6744 | - SYM_VAL (lsect->sym)); |
252b5132 | 6745 | |
25dbc73a AM |
6746 | #ifdef DEBUG |
6747 | fprintf (stderr, | |
6748 | "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", | |
6749 | lsect->name, (long) relocation, (long) relocation); | |
6750 | #endif | |
252b5132 | 6751 | |
bd6c6e2b | 6752 | return relocation; |
252b5132 | 6753 | } |
25dbc73a | 6754 | |
e054468f AM |
6755 | #define PPC_LO(v) ((v) & 0xffff) |
6756 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
6757 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
6758 | ||
6759 | static void | |
9e390558 AM |
6760 | write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, |
6761 | asection *plt_sec, unsigned char *p, | |
e054468f AM |
6762 | struct bfd_link_info *info) |
6763 | { | |
6764 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
6765 | bfd *output_bfd = info->output_bfd; | |
6766 | bfd_vma plt; | |
9e390558 AM |
6767 | unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h); |
6768 | ||
6769 | if (h != NULL | |
6770 | && h == htab->tls_get_addr | |
6771 | && !htab->params->no_tls_get_addr_opt) | |
6772 | { | |
6773 | bfd_put_32 (output_bfd, LWZ_11_3, p); | |
6774 | p += 4; | |
6775 | bfd_put_32 (output_bfd, LWZ_12_3 + 4, p); | |
6776 | p += 4; | |
6777 | bfd_put_32 (output_bfd, MR_0_3, p); | |
6778 | p += 4; | |
6779 | bfd_put_32 (output_bfd, CMPWI_11_0, p); | |
6780 | p += 4; | |
6781 | bfd_put_32 (output_bfd, ADD_3_12_2, p); | |
6782 | p += 4; | |
6783 | bfd_put_32 (output_bfd, BEQLR, p); | |
6784 | p += 4; | |
6785 | bfd_put_32 (output_bfd, MR_3_0, p); | |
6786 | p += 4; | |
6787 | bfd_put_32 (output_bfd, NOP, p); | |
6788 | p += 4; | |
6789 | } | |
e054468f AM |
6790 | |
6791 | plt = ((ent->plt.offset & ~1) | |
6792 | + plt_sec->output_section->vma | |
6793 | + plt_sec->output_offset); | |
e054468f | 6794 | |
0e1862bb | 6795 | if (bfd_link_pic (info)) |
e054468f AM |
6796 | { |
6797 | bfd_vma got = 0; | |
6798 | ||
6799 | if (ent->addend >= 32768) | |
6800 | got = (ent->addend | |
6801 | + ent->sec->output_section->vma | |
6802 | + ent->sec->output_offset); | |
6803 | else if (htab->elf.hgot != NULL) | |
6804 | got = SYM_VAL (htab->elf.hgot); | |
6805 | ||
6806 | plt -= got; | |
6807 | ||
6808 | if (plt + 0x8000 < 0x10000) | |
9e390558 | 6809 | bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p); |
e054468f AM |
6810 | else |
6811 | { | |
6812 | bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p); | |
6813 | p += 4; | |
6814 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
e054468f AM |
6815 | } |
6816 | } | |
6817 | else | |
6818 | { | |
6819 | bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p); | |
6820 | p += 4; | |
6821 | bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p); | |
9e390558 AM |
6822 | } |
6823 | p += 4; | |
6824 | bfd_put_32 (output_bfd, MTCTR_11, p); | |
6825 | p += 4; | |
407aa07c AM |
6826 | bfd_put_32 (output_bfd, BCTR, p); |
6827 | p += 4; | |
9e390558 AM |
6828 | while (p < end) |
6829 | { | |
6830 | bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); | |
e054468f AM |
6831 | p += 4; |
6832 | } | |
6833 | } | |
6834 | ||
bd6c6e2b AM |
6835 | /* Return true if symbol is defined statically. */ |
6836 | ||
6837 | static bfd_boolean | |
6838 | is_static_defined (struct elf_link_hash_entry *h) | |
6839 | { | |
6840 | return ((h->root.type == bfd_link_hash_defined | |
6841 | || h->root.type == bfd_link_hash_defweak) | |
6842 | && h->root.u.def.section != NULL | |
6843 | && h->root.u.def.section->output_section != NULL); | |
6844 | } | |
6845 | ||
2d0f3896 AM |
6846 | /* If INSN is an opcode that may be used with an @tls operand, return |
6847 | the transformed insn for TLS optimisation, otherwise return 0. If | |
6848 | REG is non-zero only match an insn with RB or RA equal to REG. */ | |
6849 | ||
6850 | unsigned int | |
6851 | _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg) | |
6852 | { | |
6853 | unsigned int rtra; | |
6854 | ||
2365f8d7 | 6855 | if ((insn & (0x3fu << 26)) != 31 << 26) |
2d0f3896 AM |
6856 | return 0; |
6857 | ||
6858 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
6859 | rtra = insn & ((1 << 26) - (1 << 16)); | |
6860 | else if (((insn >> 16) & 0x1f) == reg) | |
6861 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
6862 | else | |
6863 | return 0; | |
6864 | ||
6865 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
6866 | /* add -> addi. */ | |
6867 | insn = 14 << 26; | |
6868 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
6869 | && ((insn & (0x1f << 6)) < 14 << 6 | |
6870 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
6871 | && (insn & (0x1f << 6)) < 24 << 6))) | |
6872 | /* load and store indexed -> dform. */ | |
2365f8d7 | 6873 | insn = (32u | ((insn >> 6) & 0x1f)) << 26; |
2d0f3896 AM |
6874 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) |
6875 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
2365f8d7 | 6876 | insn = ((58u | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); |
2d0f3896 AM |
6877 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) |
6878 | /* lwax -> lwa. */ | |
2365f8d7 | 6879 | insn = (58u << 26) | 2; |
2d0f3896 AM |
6880 | else |
6881 | return 0; | |
6882 | insn |= rtra; | |
6883 | return insn; | |
6884 | } | |
6885 | ||
766bc656 AM |
6886 | /* If INSN is an opcode that may be used with an @tprel operand, return |
6887 | the transformed insn for an undefined weak symbol, ie. with the | |
6888 | thread pointer REG operand removed. Otherwise return 0. */ | |
6889 | ||
6890 | unsigned int | |
6891 | _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg) | |
6892 | { | |
6893 | if ((insn & (0x1f << 16)) == reg << 16 | |
2365f8d7 AM |
6894 | && ((insn & (0x3fu << 26)) == 14u << 26 /* addi */ |
6895 | || (insn & (0x3fu << 26)) == 15u << 26 /* addis */ | |
6896 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
6897 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
6898 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
6899 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
6900 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
6901 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
6902 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
6903 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
6904 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
6905 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
6906 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
6907 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
6908 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
6909 | || ((insn & (0x3fu << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
766bc656 | 6910 | && (insn & 3) != 1) |
2365f8d7 | 6911 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std, stmd */ |
766bc656 AM |
6912 | && ((insn & 3) == 0 || (insn & 3) == 3)))) |
6913 | { | |
6914 | insn &= ~(0x1f << 16); | |
6915 | } | |
6916 | else if ((insn & (0x1f << 21)) == reg << 21 | |
2365f8d7 AM |
6917 | && ((insn & (0x3eu << 26)) == 24u << 26 /* ori, oris */ |
6918 | || (insn & (0x3eu << 26)) == 26u << 26 /* xori,xoris */ | |
6919 | || (insn & (0x3eu << 26)) == 28u << 26 /* andi,andis */)) | |
766bc656 AM |
6920 | { |
6921 | insn &= ~(0x1f << 21); | |
6922 | insn |= (insn & (0x1f << 16)) << 5; | |
2365f8d7 | 6923 | if ((insn & (0x3eu << 26)) == 26u << 26 /* xori,xoris */) |
766bc656 AM |
6924 | insn -= 2 >> 26; /* convert to ori,oris */ |
6925 | } | |
6926 | else | |
6927 | insn = 0; | |
6928 | return insn; | |
6929 | } | |
6930 | ||
1fe532cf AM |
6931 | static bfd_boolean |
6932 | is_insn_ds_form (unsigned int insn) | |
6933 | { | |
2365f8d7 AM |
6934 | return ((insn & (0x3fu << 26)) == 58u << 26 /* ld,ldu,lwa */ |
6935 | || (insn & (0x3fu << 26)) == 62u << 26 /* std,stdu,stq */ | |
6936 | || (insn & (0x3fu << 26)) == 57u << 26 /* lfdp */ | |
6937 | || (insn & (0x3fu << 26)) == 61u << 26 /* stfdp */); | |
1fe532cf AM |
6938 | } |
6939 | ||
6940 | static bfd_boolean | |
6941 | is_insn_dq_form (unsigned int insn) | |
6942 | { | |
2365f8d7 AM |
6943 | return ((insn & (0x3fu << 26)) == 56u << 26 /* lq */ |
6944 | || ((insn & (0x3fu << 26)) == (61u << 26) /* lxv, stxv */ | |
a680de9a | 6945 | && (insn & 3) == 1)); |
1fe532cf AM |
6946 | } |
6947 | ||
252b5132 RH |
6948 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
6949 | to handle the relocations for a section. | |
6950 | ||
6951 | The relocs are always passed as Rela structures; if the section | |
6952 | actually uses Rel structures, the r_addend field will always be | |
6953 | zero. | |
6954 | ||
6955 | This function is responsible for adjust the section contents as | |
6956 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 6957 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
6958 | necessary. |
6959 | ||
6960 | This function does not have to worry about setting the reloc | |
6961 | address or the reloc symbol index. | |
6962 | ||
6963 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
6964 | ||
6965 | LOCAL_SECTIONS is an array giving the section in the input file | |
6966 | corresponding to the st_shndx field of each local symbol. | |
6967 | ||
6968 | The global hash table entry for the global symbols can be found | |
6969 | via elf_sym_hashes (input_bfd). | |
6970 | ||
1049f94e | 6971 | When generating relocatable output, this function must handle |
252b5132 RH |
6972 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
6973 | going to be the section symbol corresponding to the output | |
6974 | section, which means that the addend must be adjusted | |
6975 | accordingly. */ | |
6976 | ||
b34976b6 | 6977 | static bfd_boolean |
55fd94b0 AM |
6978 | ppc_elf_relocate_section (bfd *output_bfd, |
6979 | struct bfd_link_info *info, | |
6980 | bfd *input_bfd, | |
6981 | asection *input_section, | |
6982 | bfd_byte *contents, | |
6983 | Elf_Internal_Rela *relocs, | |
6984 | Elf_Internal_Sym *local_syms, | |
6985 | asection **local_sections) | |
252b5132 | 6986 | { |
7619e7c7 AM |
6987 | Elf_Internal_Shdr *symtab_hdr; |
6988 | struct elf_link_hash_entry **sym_hashes; | |
6989 | struct ppc_elf_link_hash_table *htab; | |
6990 | Elf_Internal_Rela *rel; | |
c316a17c | 6991 | Elf_Internal_Rela *wrel; |
7619e7c7 AM |
6992 | Elf_Internal_Rela *relend; |
6993 | Elf_Internal_Rela outrel; | |
f95f8542 | 6994 | asection *got2; |
252b5132 | 6995 | bfd_vma *local_got_offsets; |
b34976b6 | 6996 | bfd_boolean ret = TRUE; |
95f0d0d2 | 6997 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
3348747a | 6998 | bfd_boolean is_vxworks_tls; |
d3e454b9 AM |
6999 | unsigned int picfixup_size = 0; |
7000 | struct ppc_elf_relax_info *relax_info = NULL; | |
b34976b6 | 7001 | |
252b5132 | 7002 | #ifdef DEBUG |
871b3ab2 | 7003 | _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, " |
d003868e AM |
7004 | "%ld relocations%s", |
7005 | input_bfd, input_section, | |
7006 | (long) input_section->reloc_count, | |
0e1862bb | 7007 | (bfd_link_relocatable (info)) ? " (relocatable)" : ""); |
252b5132 RH |
7008 | #endif |
7009 | ||
7af5d5c4 AM |
7010 | if (!is_ppc_elf (input_bfd)) |
7011 | { | |
7012 | bfd_set_error (bfd_error_wrong_format); | |
7013 | return FALSE; | |
7014 | } | |
7015 | ||
a6aa5195 AM |
7016 | got2 = bfd_get_section_by_name (input_bfd, ".got2"); |
7017 | ||
e47cd125 | 7018 | /* Initialize howto table if not already done. */ |
8da6118f | 7019 | if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
252b5132 RH |
7020 | ppc_elf_howto_init (); |
7021 | ||
7619e7c7 | 7022 | htab = ppc_elf_hash_table (info); |
252b5132 | 7023 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0ffa91dd | 7024 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
7619e7c7 | 7025 | sym_hashes = elf_sym_hashes (input_bfd); |
3348747a NS |
7026 | /* We have to handle relocations in vxworks .tls_vars sections |
7027 | specially, because the dynamic loader is 'weird'. */ | |
0e1862bb | 7028 | is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info) |
3348747a NS |
7029 | && !strcmp (input_section->output_section->name, |
7030 | ".tls_vars")); | |
d3e454b9 AM |
7031 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET) |
7032 | relax_info = elf_section_data (input_section)->sec_info; | |
c316a17c | 7033 | rel = wrel = relocs; |
7619e7c7 | 7034 | relend = relocs + input_section->reloc_count; |
c316a17c | 7035 | for (; rel < relend; wrel++, rel++) |
252b5132 | 7036 | { |
7619e7c7 AM |
7037 | enum elf_ppc_reloc_type r_type; |
7038 | bfd_vma addend; | |
7039 | bfd_reloc_status_type r; | |
7040 | Elf_Internal_Sym *sym; | |
7041 | asection *sec; | |
7042 | struct elf_link_hash_entry *h; | |
7043 | const char *sym_name; | |
252b5132 RH |
7044 | reloc_howto_type *howto; |
7045 | unsigned long r_symndx; | |
7046 | bfd_vma relocation; | |
91d6fa6a | 7047 | bfd_vma branch_bit, from; |
23cedd1d | 7048 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
7619e7c7 AM |
7049 | bfd_boolean warned; |
7050 | unsigned int tls_type, tls_mask, tls_gd; | |
08be3224 | 7051 | struct plt_entry **ifunc, **plt_list; |
86c95733 | 7052 | struct reloc_howto_struct alt_howto; |
7619e7c7 | 7053 | |
c316a17c | 7054 | again: |
55fd94b0 AM |
7055 | r_type = ELF32_R_TYPE (rel->r_info); |
7056 | sym = NULL; | |
7057 | sec = NULL; | |
7058 | h = NULL; | |
7619e7c7 AM |
7059 | unresolved_reloc = FALSE; |
7060 | warned = FALSE; | |
252b5132 | 7061 | r_symndx = ELF32_R_SYM (rel->r_info); |
560e09e9 | 7062 | |
252b5132 RH |
7063 | if (r_symndx < symtab_hdr->sh_info) |
7064 | { | |
7065 | sym = local_syms + r_symndx; | |
7066 | sec = local_sections[r_symndx]; | |
26c61ae5 | 7067 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
252b5132 | 7068 | |
8517fae7 | 7069 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
7070 | } |
7071 | else | |
7072 | { | |
62d887d4 L |
7073 | bfd_boolean ignored; |
7074 | ||
b2a8e766 AM |
7075 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7076 | r_symndx, symtab_hdr, sym_hashes, | |
7077 | h, sec, relocation, | |
62d887d4 | 7078 | unresolved_reloc, warned, ignored); |
9abc968f | 7079 | |
252b5132 | 7080 | sym_name = h->root.root.string; |
7619e7c7 AM |
7081 | } |
7082 | ||
dbaa2011 | 7083 | if (sec != NULL && discarded_section (sec)) |
ab96bf03 AM |
7084 | { |
7085 | /* For relocs against symbols from removed linkonce sections, | |
7086 | or sections discarded by a linker script, we just want the | |
7087 | section contents zeroed. Avoid any special processing. */ | |
7088 | howto = NULL; | |
7089 | if (r_type < R_PPC_max) | |
7090 | howto = ppc_elf_howto_table[r_type]; | |
c316a17c AM |
7091 | |
7092 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 7093 | contents, rel->r_offset); |
c316a17c AM |
7094 | wrel->r_offset = rel->r_offset; |
7095 | wrel->r_info = 0; | |
7096 | wrel->r_addend = 0; | |
7097 | ||
7098 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 7099 | symbols defined in discarded sections. Not done for |
c316a17c AM |
7100 | non-debug to preserve relocs in .eh_frame which the |
7101 | eh_frame editing code expects to be present. */ | |
7102 | if (bfd_link_relocatable (info) | |
7103 | && (input_section->flags & SEC_DEBUGGING)) | |
7104 | wrel--; | |
7105 | ||
7106 | continue; | |
ab96bf03 AM |
7107 | } |
7108 | ||
0e1862bb | 7109 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
7110 | { |
7111 | if (got2 != NULL | |
7112 | && r_type == R_PPC_PLTREL24 | |
f75e0e33 | 7113 | && rel->r_addend != 0) |
ab96bf03 AM |
7114 | { |
7115 | /* R_PPC_PLTREL24 is rather special. If non-zero, the | |
7116 | addend specifies the GOT pointer offset within .got2. */ | |
7117 | rel->r_addend += got2->output_offset; | |
7118 | } | |
53291d1f AM |
7119 | if (r_type != R_PPC_RELAX_PLT |
7120 | && r_type != R_PPC_RELAX_PLTREL24 | |
7121 | && r_type != R_PPC_RELAX) | |
c316a17c | 7122 | goto copy_reloc; |
ab96bf03 AM |
7123 | } |
7124 | ||
7619e7c7 AM |
7125 | /* TLS optimizations. Replace instruction sequences and relocs |
7126 | based on information we collected in tls_optimize. We edit | |
7127 | RELOCS so that --emit-relocs will output something sensible | |
7128 | for the final instruction stream. */ | |
7129 | tls_mask = 0; | |
7130 | tls_gd = 0; | |
727fc41e AM |
7131 | if (h != NULL) |
7132 | tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; | |
7133 | else if (local_got_offsets != NULL) | |
7619e7c7 | 7134 | { |
e054468f | 7135 | struct plt_entry **local_plt; |
727fc41e | 7136 | char *lgot_masks; |
e054468f AM |
7137 | local_plt |
7138 | = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info); | |
7139 | lgot_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
727fc41e | 7140 | tls_mask = lgot_masks[r_symndx]; |
7619e7c7 AM |
7141 | } |
7142 | ||
7143 | /* Ensure reloc mapping code below stays sane. */ | |
7144 | if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) | |
7145 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) | |
7146 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) | |
7147 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) | |
7148 | || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) | |
7149 | || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) | |
7150 | || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) | |
7151 | || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) | |
7152 | abort (); | |
7153 | switch (r_type) | |
7154 | { | |
7155 | default: | |
7156 | break; | |
7157 | ||
7158 | case R_PPC_GOT_TPREL16: | |
7159 | case R_PPC_GOT_TPREL16_LO: | |
e054468f | 7160 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7161 | && (tls_mask & TLS_TPREL) == 0) |
7162 | { | |
7163 | bfd_vma insn; | |
91d6fa6a | 7164 | |
95f0d0d2 | 7165 | insn = bfd_get_32 (input_bfd, |
c316a17c | 7166 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7167 | insn &= 31 << 21; |
7168 | insn |= 0x3c020000; /* addis 0,2,0 */ | |
95f0d0d2 | 7169 | bfd_put_32 (input_bfd, insn, |
c316a17c | 7170 | contents + rel->r_offset - d_offset); |
7619e7c7 AM |
7171 | r_type = R_PPC_TPREL16_HA; |
7172 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7173 | } | |
7174 | break; | |
7175 | ||
7176 | case R_PPC_TLS: | |
e054468f | 7177 | if ((tls_mask & TLS_TLS) != 0 |
7619e7c7 AM |
7178 | && (tls_mask & TLS_TPREL) == 0) |
7179 | { | |
2d0f3896 AM |
7180 | bfd_vma insn; |
7181 | ||
95f0d0d2 | 7182 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
7183 | insn = _bfd_elf_ppc_at_tls_transform (insn, 2); |
7184 | if (insn == 0) | |
7619e7c7 | 7185 | abort (); |
95f0d0d2 | 7186 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
7619e7c7 AM |
7187 | r_type = R_PPC_TPREL16_LO; |
7188 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
4fe5ca5b | 7189 | |
7619e7c7 | 7190 | /* Was PPC_TLS which sits on insn boundary, now |
4fe5ca5b GM |
7191 | PPC_TPREL16_LO which is at low-order half-word. */ |
7192 | rel->r_offset += d_offset; | |
7619e7c7 AM |
7193 | } |
7194 | break; | |
7195 | ||
7196 | case R_PPC_GOT_TLSGD16_HI: | |
7197 | case R_PPC_GOT_TLSGD16_HA: | |
b00a0a86 | 7198 | tls_gd = TLS_GDIE; |
e054468f | 7199 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
7619e7c7 AM |
7200 | goto tls_gdld_hi; |
7201 | break; | |
7202 | ||
7203 | case R_PPC_GOT_TLSLD16_HI: | |
7204 | case R_PPC_GOT_TLSLD16_HA: | |
e054468f | 7205 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 AM |
7206 | { |
7207 | tls_gdld_hi: | |
7208 | if ((tls_mask & tls_gd) != 0) | |
7209 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) | |
7210 | + R_PPC_GOT_TPREL16); | |
7211 | else | |
7212 | { | |
4fe5ca5b | 7213 | rel->r_offset -= d_offset; |
95f0d0d2 | 7214 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
7619e7c7 AM |
7215 | r_type = R_PPC_NONE; |
7216 | } | |
7217 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7218 | } | |
7219 | break; | |
7220 | ||
7221 | case R_PPC_GOT_TLSGD16: | |
7222 | case R_PPC_GOT_TLSGD16_LO: | |
b00a0a86 | 7223 | tls_gd = TLS_GDIE; |
e054468f | 7224 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
b7fcf6f6 | 7225 | goto tls_ldgd_opt; |
7619e7c7 AM |
7226 | break; |
7227 | ||
7228 | case R_PPC_GOT_TLSLD16: | |
7229 | case R_PPC_GOT_TLSLD16_LO: | |
e054468f | 7230 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
7619e7c7 | 7231 | { |
3a71aa26 | 7232 | unsigned int insn1, insn2; |
b7fcf6f6 | 7233 | bfd_vma offset; |
7619e7c7 | 7234 | |
b7fcf6f6 | 7235 | tls_ldgd_opt: |
727fc41e AM |
7236 | offset = (bfd_vma) -1; |
7237 | /* If not using the newer R_PPC_TLSGD/LD to mark | |
7238 | __tls_get_addr calls, we must trust that the call | |
7239 | stays with its arg setup insns, ie. that the next | |
7240 | reloc is the __tls_get_addr call associated with | |
7241 | the current reloc. Edit both insns. */ | |
9737e8af | 7242 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
7243 | && rel + 1 < relend |
7244 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
7245 | htab->tls_get_addr)) | |
7246 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
7247 | /* We read the low GOT_TLS insn because we need to keep |
7248 | the destination reg. It may be something other than | |
7249 | the usual r3, and moved to r3 before the call by | |
7250 | intervening code. */ | |
95f0d0d2 | 7251 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 7252 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7253 | if ((tls_mask & tls_gd) != 0) |
7254 | { | |
7255 | /* IE */ | |
b86ac8e3 | 7256 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 7257 | insn1 |= 32u << 26; /* lwz */ |
727fc41e AM |
7258 | if (offset != (bfd_vma) -1) |
7259 | { | |
f58d5a2d | 7260 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e | 7261 | insn2 = 0x7c631214; /* add 3,3,2 */ |
95f0d0d2 | 7262 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7263 | } |
b7fcf6f6 AM |
7264 | r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) |
7265 | + R_PPC_GOT_TPREL16); | |
7266 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
7267 | } | |
7268 | else | |
7269 | { | |
7270 | /* LE */ | |
b86ac8e3 AM |
7271 | insn1 &= 0x1f << 21; |
7272 | insn1 |= 0x3c020000; /* addis r,2,0 */ | |
7619e7c7 AM |
7273 | if (tls_gd == 0) |
7274 | { | |
b7fcf6f6 | 7275 | /* Was an LD reloc. */ |
1d483afe AM |
7276 | for (r_symndx = 0; |
7277 | r_symndx < symtab_hdr->sh_info; | |
7278 | r_symndx++) | |
7279 | if (local_sections[r_symndx] == sec) | |
7280 | break; | |
7281 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7282 | r_symndx = STN_UNDEF; |
b7fcf6f6 | 7283 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7284 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
7285 | rel->r_addend -= (local_syms[r_symndx].st_value |
7286 | + sec->output_offset | |
7287 | + sec->output_section->vma); | |
7619e7c7 | 7288 | } |
b7fcf6f6 AM |
7289 | r_type = R_PPC_TPREL16_HA; |
7290 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
727fc41e AM |
7291 | if (offset != (bfd_vma) -1) |
7292 | { | |
7293 | rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7294 | rel[1].r_offset = offset + d_offset; | |
7295 | rel[1].r_addend = rel->r_addend; | |
7296 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 7297 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 7298 | } |
b7fcf6f6 | 7299 | } |
95f0d0d2 | 7300 | bfd_put_32 (input_bfd, insn1, |
b7fcf6f6 | 7301 | contents + rel->r_offset - d_offset); |
b7fcf6f6 AM |
7302 | if (tls_gd == 0) |
7303 | { | |
7304 | /* We changed the symbol on an LD reloc. Start over | |
7305 | in order to get h, sym, sec etc. right. */ | |
c316a17c | 7306 | goto again; |
7619e7c7 | 7307 | } |
252b5132 | 7308 | } |
7619e7c7 | 7309 | break; |
727fc41e AM |
7310 | |
7311 | case R_PPC_TLSGD: | |
675e2809 AM |
7312 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
7313 | && rel + 1 < relend) | |
727fc41e AM |
7314 | { |
7315 | unsigned int insn2; | |
7316 | bfd_vma offset = rel->r_offset; | |
7317 | ||
23cedd1d AM |
7318 | if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) |
7319 | { | |
7320 | bfd_put_32 (input_bfd, NOP, contents + offset); | |
7321 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); | |
7322 | break; | |
7323 | } | |
7324 | ||
b00a0a86 | 7325 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
7326 | { |
7327 | /* IE */ | |
7328 | r_type = R_PPC_NONE; | |
7329 | insn2 = 0x7c631214; /* add 3,3,2 */ | |
7330 | } | |
7331 | else | |
7332 | { | |
7333 | /* LE */ | |
7334 | r_type = R_PPC_TPREL16_LO; | |
7335 | rel->r_offset += d_offset; | |
7336 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
7337 | } | |
7338 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
95f0d0d2 | 7339 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
7340 | /* Zap the reloc on the _tls_get_addr call too. */ |
7341 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 7342 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
727fc41e AM |
7343 | } |
7344 | break; | |
7345 | ||
7346 | case R_PPC_TLSLD: | |
675e2809 AM |
7347 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
7348 | && rel + 1 < relend) | |
727fc41e AM |
7349 | { |
7350 | unsigned int insn2; | |
7351 | ||
23cedd1d AM |
7352 | if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info))) |
7353 | { | |
7354 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); | |
7355 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); | |
7356 | break; | |
7357 | } | |
7358 | ||
727fc41e AM |
7359 | for (r_symndx = 0; |
7360 | r_symndx < symtab_hdr->sh_info; | |
7361 | r_symndx++) | |
7362 | if (local_sections[r_symndx] == sec) | |
7363 | break; | |
7364 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 7365 | r_symndx = STN_UNDEF; |
727fc41e | 7366 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 7367 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
7368 | rel->r_addend -= (local_syms[r_symndx].st_value |
7369 | + sec->output_offset | |
7370 | + sec->output_section->vma); | |
7371 | ||
7372 | rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO); | |
7373 | rel->r_offset += d_offset; | |
7374 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
95f0d0d2 | 7375 | bfd_put_32 (input_bfd, insn2, |
727fc41e AM |
7376 | contents + rel->r_offset - d_offset); |
7377 | /* Zap the reloc on the _tls_get_addr call too. */ | |
7378 | BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset); | |
f58d5a2d | 7379 | rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE); |
c316a17c | 7380 | goto again; |
727fc41e AM |
7381 | } |
7382 | break; | |
7619e7c7 AM |
7383 | } |
7384 | ||
7385 | /* Handle other relocations that tweak non-addend part of insn. */ | |
7386 | branch_bit = 0; | |
7387 | switch (r_type) | |
7388 | { | |
7389 | default: | |
7390 | break; | |
7391 | ||
7392 | /* Branch taken prediction relocations. */ | |
7393 | case R_PPC_ADDR14_BRTAKEN: | |
7394 | case R_PPC_REL14_BRTAKEN: | |
7395 | branch_bit = BRANCH_PREDICT_BIT; | |
1a0670f3 | 7396 | /* Fall through. */ |
7619e7c7 | 7397 | |
4cc11e76 | 7398 | /* Branch not taken prediction relocations. */ |
7619e7c7 AM |
7399 | case R_PPC_ADDR14_BRNTAKEN: |
7400 | case R_PPC_REL14_BRNTAKEN: | |
91d6fa6a | 7401 | { |
23cedd1d | 7402 | unsigned int insn; |
7619e7c7 | 7403 | |
95f0d0d2 | 7404 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
91d6fa6a NC |
7405 | insn &= ~BRANCH_PREDICT_BIT; |
7406 | insn |= branch_bit; | |
7619e7c7 | 7407 | |
91d6fa6a NC |
7408 | from = (rel->r_offset |
7409 | + input_section->output_offset | |
7410 | + input_section->output_section->vma); | |
7619e7c7 | 7411 | |
91d6fa6a NC |
7412 | /* Invert 'y' bit if not the default. */ |
7413 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
7414 | insn ^= BRANCH_PREDICT_BIT; | |
7415 | ||
95f0d0d2 | 7416 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
91d6fa6a | 7417 | } |
08be3224 AM |
7418 | break; |
7419 | ||
7420 | case R_PPC_PLT16_HA: | |
7421 | { | |
7422 | unsigned int insn; | |
7423 | ||
7424 | insn = bfd_get_32 (input_bfd, | |
7425 | contents + rel->r_offset - d_offset); | |
2365f8d7 | 7426 | if ((insn & (0x3fu << 26)) == 15u << 26 |
08be3224 AM |
7427 | && (insn & (0x1f << 16)) != 0) |
7428 | { | |
7429 | if (!bfd_link_pic (info)) | |
7430 | { | |
7431 | /* Convert addis to lis. */ | |
7432 | insn &= ~(0x1f << 16); | |
7433 | bfd_put_32 (input_bfd, insn, | |
7434 | contents + rel->r_offset - d_offset); | |
7435 | } | |
7436 | } | |
7437 | else if (bfd_link_pic (info)) | |
7438 | info->callbacks->einfo | |
7439 | (_("%P: %H: error: %s with unexpected instruction %x\n"), | |
7440 | input_bfd, input_section, rel->r_offset, | |
7441 | "R_PPC_PLT16_HA", insn); | |
7442 | } | |
7443 | break; | |
252b5132 RH |
7444 | } |
7445 | ||
d3e454b9 AM |
7446 | if (ELIMINATE_COPY_RELOCS |
7447 | && h != NULL | |
7448 | && !h->def_regular | |
7449 | && h->protected_def | |
7450 | && ppc_elf_hash_entry (h)->has_addr16_ha | |
7451 | && ppc_elf_hash_entry (h)->has_addr16_lo | |
7452 | && htab->params->pic_fixup > 0) | |
7453 | { | |
7454 | /* Convert lis;addi or lis;load/store accessing a protected | |
7455 | variable defined in a shared library to PIC. */ | |
7456 | unsigned int insn; | |
7457 | ||
7458 | if (r_type == R_PPC_ADDR16_HA) | |
7459 | { | |
95f0d0d2 | 7460 | insn = bfd_get_32 (input_bfd, |
d3e454b9 | 7461 | contents + rel->r_offset - d_offset); |
2365f8d7 | 7462 | if ((insn & (0x3fu << 26)) == (15u << 26) |
d3e454b9 AM |
7463 | && (insn & (0x1f << 16)) == 0 /* lis */) |
7464 | { | |
7465 | bfd_byte *p; | |
7466 | bfd_vma off; | |
7467 | bfd_vma got_addr; | |
7468 | ||
7469 | p = (contents + input_section->size | |
7470 | - relax_info->workaround_size | |
7471 | - relax_info->picfixup_size | |
7472 | + picfixup_size); | |
7473 | off = (p - contents) - (rel->r_offset - d_offset); | |
7474 | if (off > 0x1fffffc || (off & 3) != 0) | |
7475 | info->callbacks->einfo | |
174d0a74 | 7476 | (_("%H: fixup branch overflow\n"), |
d3e454b9 AM |
7477 | input_bfd, input_section, rel->r_offset); |
7478 | ||
95f0d0d2 | 7479 | bfd_put_32 (input_bfd, B | off, |
d3e454b9 | 7480 | contents + rel->r_offset - d_offset); |
ce558b89 AM |
7481 | got_addr = (htab->elf.sgot->output_section->vma |
7482 | + htab->elf.sgot->output_offset | |
d3e454b9 | 7483 | + (h->got.offset & ~1)); |
c316a17c AM |
7484 | wrel->r_offset = (p - contents) + d_offset; |
7485 | wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA); | |
7486 | wrel->r_addend = got_addr; | |
d3e454b9 | 7487 | insn &= ~0xffff; |
4aef7643 | 7488 | insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff; |
95f0d0d2 | 7489 | bfd_put_32 (input_bfd, insn, p); |
d3e454b9 AM |
7490 | |
7491 | /* Convert lis to lwz, loading address from GOT. */ | |
7492 | insn &= ~0xffff; | |
7493 | insn ^= (32u ^ 15u) << 26; | |
7494 | insn |= (insn & (0x1f << 21)) >> 5; | |
7495 | insn |= got_addr & 0xffff; | |
95f0d0d2 | 7496 | bfd_put_32 (input_bfd, insn, p + 4); |
d3e454b9 | 7497 | |
95f0d0d2 | 7498 | bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8); |
d3e454b9 AM |
7499 | picfixup_size += 12; |
7500 | ||
7501 | /* Use one of the spare relocs, so --emit-relocs | |
7502 | output is reasonable. */ | |
7503 | memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel)); | |
c316a17c AM |
7504 | wrel++, rel++; |
7505 | rel->r_offset = wrel[-1].r_offset + 4; | |
d3e454b9 | 7506 | rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO); |
c316a17c | 7507 | rel->r_addend = wrel[-1].r_addend; |
d3e454b9 AM |
7508 | |
7509 | /* Continue on as if we had a got reloc, to output | |
7510 | dynamic reloc. */ | |
7511 | r_type = R_PPC_GOT16_LO; | |
7512 | } | |
7513 | else | |
2c4d9cbe | 7514 | _bfd_error_handler |
695344c0 | 7515 | /* xgettext:c-format */ |
2dcf00ce AM |
7516 | (_("%pB(%pA+%#" PRIx64 "): error: " |
7517 | "%s with unexpected instruction %#x"), | |
7518 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
7519 | "R_PPC_ADDR16_HA", insn); |
7520 | } | |
7521 | else if (r_type == R_PPC_ADDR16_LO) | |
7522 | { | |
95f0d0d2 | 7523 | insn = bfd_get_32 (input_bfd, |
d3e454b9 | 7524 | contents + rel->r_offset - d_offset); |
2365f8d7 AM |
7525 | if ((insn & (0x3fu << 26)) == 14u << 26 /* addi */ |
7526 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
7527 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
7528 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
7529 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
7530 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
7531 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
7532 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
7533 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
7534 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
7535 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
7536 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
7537 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
7538 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
7539 | || ((insn & (0x3fu << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
d3e454b9 | 7540 | && (insn & 3) != 1) |
2365f8d7 | 7541 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std, stmd */ |
d3e454b9 AM |
7542 | && ((insn & 3) == 0 || (insn & 3) == 3))) |
7543 | { | |
7544 | /* Arrange to apply the reloc addend, if any. */ | |
7545 | relocation = 0; | |
7546 | unresolved_reloc = FALSE; | |
7547 | rel->r_info = ELF32_R_INFO (0, r_type); | |
7548 | } | |
7549 | else | |
2c4d9cbe | 7550 | _bfd_error_handler |
695344c0 | 7551 | /* xgettext:c-format */ |
2dcf00ce AM |
7552 | (_("%pB(%pA+%#" PRIx64 "): error: " |
7553 | "%s with unexpected instruction %#x"), | |
7554 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
d3e454b9 AM |
7555 | "R_PPC_ADDR16_LO", insn); |
7556 | } | |
7557 | } | |
7558 | ||
e054468f | 7559 | ifunc = NULL; |
25f23106 | 7560 | if (!htab->is_vxworks) |
e054468f | 7561 | { |
de972ffa AM |
7562 | struct plt_entry *ent; |
7563 | ||
e054468f AM |
7564 | if (h != NULL) |
7565 | { | |
7566 | if (h->type == STT_GNU_IFUNC) | |
7567 | ifunc = &h->plt.plist; | |
7568 | } | |
de972ffa AM |
7569 | else if (local_got_offsets != NULL |
7570 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
e054468f | 7571 | { |
de972ffa | 7572 | struct plt_entry **local_plt; |
e054468f | 7573 | |
de972ffa AM |
7574 | local_plt = (struct plt_entry **) (local_got_offsets |
7575 | + symtab_hdr->sh_info); | |
7576 | ifunc = local_plt + r_symndx; | |
e054468f | 7577 | } |
e054468f | 7578 | |
de972ffa AM |
7579 | ent = NULL; |
7580 | if (ifunc != NULL | |
0e1862bb | 7581 | && (!bfd_link_pic (info) |
08be3224 AM |
7582 | || is_branch_reloc (r_type) |
7583 | || r_type == R_PPC_PLT16_LO | |
7584 | || r_type == R_PPC_PLT16_HI | |
7585 | || r_type == R_PPC_PLT16_HA)) | |
de972ffa AM |
7586 | { |
7587 | addend = 0; | |
08be3224 AM |
7588 | if (bfd_link_pic (info) |
7589 | && (r_type == R_PPC_PLTREL24 | |
7590 | || r_type == R_PPC_PLT16_LO | |
7591 | || r_type == R_PPC_PLT16_HI | |
7592 | || r_type == R_PPC_PLT16_HA)) | |
de972ffa AM |
7593 | addend = rel->r_addend; |
7594 | ent = find_plt_ent (ifunc, got2, addend); | |
7595 | } | |
7596 | if (ent != NULL) | |
7597 | { | |
888a7fc3 AM |
7598 | if (bfd_link_pic (info) |
7599 | && ent->sec != got2 | |
7600 | && htab->plt_type != PLT_NEW | |
7601 | && (!htab->elf.dynamic_sections_created | |
7602 | || h == NULL | |
7603 | || h->dynindx == -1)) | |
7604 | { | |
7605 | /* Uh oh, we are going to create a pic glink stub | |
7606 | for an ifunc (here for h == NULL and later in | |
7607 | finish_dynamic_symbol for h != NULL), and | |
7608 | apparently are using code compiled with | |
7609 | -mbss-plt. The difficulty is that -mbss-plt code | |
7610 | gives no indication via a magic PLTREL24 addend | |
7611 | whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or | |
7612 | is pointing into a .got2 section (and how far | |
7613 | into .got2). */ | |
7614 | info->callbacks->einfo | |
695344c0 | 7615 | /* xgettext:c-format */ |
174d0a74 | 7616 | (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"), |
888a7fc3 AM |
7617 | input_bfd, input_section, rel->r_offset, sym_name); |
7618 | } | |
e054468f AM |
7619 | |
7620 | unresolved_reloc = FALSE; | |
7621 | if (htab->plt_type == PLT_NEW | |
7622 | || !htab->elf.dynamic_sections_created | |
c7e17e05 AM |
7623 | || h == NULL |
7624 | || h->dynindx == -1) | |
e054468f AM |
7625 | relocation = (htab->glink->output_section->vma |
7626 | + htab->glink->output_offset | |
7627 | + (ent->glink_offset & ~1)); | |
7628 | else | |
ce558b89 AM |
7629 | relocation = (htab->elf.splt->output_section->vma |
7630 | + htab->elf.splt->output_offset | |
e054468f AM |
7631 | + ent->plt.offset); |
7632 | } | |
7633 | } | |
7634 | ||
7619e7c7 | 7635 | addend = rel->r_addend; |
23cedd1d | 7636 | save_unresolved_reloc = unresolved_reloc; |
7619e7c7 | 7637 | howto = NULL; |
55fd94b0 AM |
7638 | if (r_type < R_PPC_max) |
7639 | howto = ppc_elf_howto_table[r_type]; | |
9a23f96e AM |
7640 | |
7641 | switch (r_type) | |
7642 | { | |
7643 | default: | |
7644 | break; | |
7645 | ||
7646 | case R_PPC_TPREL16_HA: | |
7647 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
7648 | { | |
7649 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
7650 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 7651 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) |
9a23f96e AM |
7652 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) |
7653 | /* xgettext:c-format */ | |
7654 | info->callbacks->minfo | |
7655 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
7656 | input_bfd, input_section, rel->r_offset, howto->name, insn); | |
7657 | else | |
7658 | bfd_put_32 (input_bfd, NOP, p); | |
7659 | } | |
7660 | break; | |
7661 | ||
7662 | case R_PPC_TPREL16_LO: | |
7663 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
7664 | { | |
7665 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
7666 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
7667 | insn &= ~(0x1f << 16); | |
7668 | insn |= 2 << 16; | |
7669 | bfd_put_32 (input_bfd, insn, p); | |
7670 | } | |
7671 | break; | |
7672 | } | |
7673 | ||
7674 | tls_type = 0; | |
7619e7c7 | 7675 | switch (r_type) |
252b5132 RH |
7676 | { |
7677 | default: | |
cf97bcb0 AM |
7678 | /* xgettext:c-format */ |
7679 | _bfd_error_handler (_("%pB: %s unsupported"), | |
7680 | input_bfd, howto->name); | |
252b5132 RH |
7681 | |
7682 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 7683 | ret = FALSE; |
c316a17c | 7684 | goto copy_reloc; |
252b5132 | 7685 | |
7619e7c7 AM |
7686 | case R_PPC_NONE: |
7687 | case R_PPC_TLS: | |
727fc41e AM |
7688 | case R_PPC_TLSGD: |
7689 | case R_PPC_TLSLD: | |
7619e7c7 AM |
7690 | case R_PPC_EMB_MRKREF: |
7691 | case R_PPC_GNU_VTINHERIT: | |
7692 | case R_PPC_GNU_VTENTRY: | |
c316a17c | 7693 | goto copy_reloc; |
7595d193 | 7694 | |
7619e7c7 AM |
7695 | /* GOT16 relocations. Like an ADDR16 using the symbol's |
7696 | address in the GOT as relocation value instead of the | |
7697 | symbol's value itself. Also, create a GOT entry for the | |
7698 | symbol and put the symbol value there. */ | |
7699 | case R_PPC_GOT_TLSGD16: | |
7700 | case R_PPC_GOT_TLSGD16_LO: | |
7701 | case R_PPC_GOT_TLSGD16_HI: | |
7702 | case R_PPC_GOT_TLSGD16_HA: | |
7703 | tls_type = TLS_TLS | TLS_GD; | |
7704 | goto dogot; | |
7705 | ||
7706 | case R_PPC_GOT_TLSLD16: | |
7707 | case R_PPC_GOT_TLSLD16_LO: | |
7708 | case R_PPC_GOT_TLSLD16_HI: | |
7709 | case R_PPC_GOT_TLSLD16_HA: | |
7710 | tls_type = TLS_TLS | TLS_LD; | |
7711 | goto dogot; | |
7712 | ||
7713 | case R_PPC_GOT_TPREL16: | |
7714 | case R_PPC_GOT_TPREL16_LO: | |
7715 | case R_PPC_GOT_TPREL16_HI: | |
7716 | case R_PPC_GOT_TPREL16_HA: | |
7717 | tls_type = TLS_TLS | TLS_TPREL; | |
7718 | goto dogot; | |
7719 | ||
7720 | case R_PPC_GOT_DTPREL16: | |
7721 | case R_PPC_GOT_DTPREL16_LO: | |
7722 | case R_PPC_GOT_DTPREL16_HI: | |
7723 | case R_PPC_GOT_DTPREL16_HA: | |
7724 | tls_type = TLS_TLS | TLS_DTPREL; | |
7725 | goto dogot; | |
7726 | ||
7727 | case R_PPC_GOT16: | |
7728 | case R_PPC_GOT16_LO: | |
7729 | case R_PPC_GOT16_HI: | |
7730 | case R_PPC_GOT16_HA: | |
727fc41e | 7731 | tls_mask = 0; |
7619e7c7 AM |
7732 | dogot: |
7733 | { | |
7734 | /* Relocation is to the entry for this symbol in the global | |
7735 | offset table. */ | |
7736 | bfd_vma off; | |
7737 | bfd_vma *offp; | |
7738 | unsigned long indx; | |
7739 | ||
ce558b89 | 7740 | if (htab->elf.sgot == NULL) |
7619e7c7 AM |
7741 | abort (); |
7742 | ||
7743 | indx = 0; | |
7744 | if (tls_type == (TLS_TLS | TLS_LD) | |
f749f26e | 7745 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7619e7c7 AM |
7746 | offp = &htab->tlsld_got.offset; |
7747 | else if (h != NULL) | |
7748 | { | |
f0158f44 AM |
7749 | if (!htab->elf.dynamic_sections_created |
7750 | || h->dynindx == -1 | |
7751 | || SYMBOL_REFERENCES_LOCAL (info, h) | |
21d68fcd | 7752 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7619e7c7 AM |
7753 | /* This is actually a static link, or it is a |
7754 | -Bsymbolic link and the symbol is defined | |
7755 | locally, or the symbol was forced to be local | |
7756 | because of a version file. */ | |
7757 | ; | |
7758 | else | |
7759 | { | |
7760 | indx = h->dynindx; | |
7761 | unresolved_reloc = FALSE; | |
7762 | } | |
7763 | offp = &h->got.offset; | |
7764 | } | |
7765 | else | |
7766 | { | |
7767 | if (local_got_offsets == NULL) | |
7768 | abort (); | |
7769 | offp = &local_got_offsets[r_symndx]; | |
7770 | } | |
7771 | ||
7772 | /* The offset must always be a multiple of 4. We use the | |
7773 | least significant bit to record whether we have already | |
7774 | processed this entry. */ | |
7775 | off = *offp; | |
7776 | if ((off & 1) != 0) | |
7777 | off &= ~1; | |
7778 | else | |
7779 | { | |
37da22e5 AM |
7780 | unsigned int tls_m = ((tls_mask & TLS_TLS) != 0 |
7781 | ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL | |
b00a0a86 | 7782 | | TLS_TPREL | TLS_GDIE) |
37da22e5 | 7783 | : 0); |
70bccea4 AM |
7784 | |
7785 | if (offp == &htab->tlsld_got.offset) | |
7786 | tls_m = TLS_LD; | |
f749f26e AM |
7787 | else if ((tls_m & TLS_LD) != 0 |
7788 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
70bccea4 AM |
7789 | tls_m &= ~TLS_LD; |
7790 | ||
7791 | /* We might have multiple got entries for this sym. | |
7792 | Initialize them all. */ | |
7793 | do | |
7619e7c7 | 7794 | { |
70bccea4 AM |
7795 | int tls_ty = 0; |
7796 | ||
7797 | if ((tls_m & TLS_LD) != 0) | |
7619e7c7 | 7798 | { |
70bccea4 AM |
7799 | tls_ty = TLS_TLS | TLS_LD; |
7800 | tls_m &= ~TLS_LD; | |
7801 | } | |
7802 | else if ((tls_m & TLS_GD) != 0) | |
7803 | { | |
7804 | tls_ty = TLS_TLS | TLS_GD; | |
7805 | tls_m &= ~TLS_GD; | |
7806 | } | |
7807 | else if ((tls_m & TLS_DTPREL) != 0) | |
7808 | { | |
7809 | tls_ty = TLS_TLS | TLS_DTPREL; | |
7810 | tls_m &= ~TLS_DTPREL; | |
7811 | } | |
b00a0a86 | 7812 | else if ((tls_m & (TLS_TPREL | TLS_GDIE)) != 0) |
70bccea4 AM |
7813 | { |
7814 | tls_ty = TLS_TLS | TLS_TPREL; | |
7815 | tls_m = 0; | |
7619e7c7 | 7816 | } |
7619e7c7 | 7817 | |
70bccea4 | 7818 | /* Generate relocs for the dynamic linker. */ |
f0158f44 AM |
7819 | if (indx != 0 |
7820 | || (bfd_link_pic (info) | |
7821 | && (h == NULL | |
f749f26e AM |
7822 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
7823 | && !(tls_ty != 0 | |
f15d0b54 AM |
7824 | && bfd_link_executable (info) |
7825 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
7619e7c7 | 7826 | { |
ce558b89 | 7827 | asection *rsec = htab->elf.srelgot; |
91d6fa6a | 7828 | bfd_byte * loc; |
91e21fb7 | 7829 | |
0bed072f | 7830 | if (ifunc != NULL) |
82e66161 AM |
7831 | { |
7832 | rsec = htab->elf.irelplt; | |
7833 | if (indx == 0) | |
7834 | htab->local_ifunc_resolver = 1; | |
7835 | else if (is_static_defined (h)) | |
7836 | htab->maybe_local_ifunc_resolver = 1; | |
7837 | } | |
ce558b89 AM |
7838 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
7839 | + htab->elf.sgot->output_offset | |
70bccea4 | 7840 | + off); |
e515b051 | 7841 | outrel.r_addend = 0; |
70bccea4 AM |
7842 | if (tls_ty & (TLS_LD | TLS_GD)) |
7843 | { | |
7844 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); | |
70bccea4 AM |
7845 | if (tls_ty == (TLS_TLS | TLS_GD)) |
7846 | { | |
25f23106 AM |
7847 | loc = rsec->contents; |
7848 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
7849 | * sizeof (Elf32_External_Rela)); |
7850 | bfd_elf32_swap_reloca_out (output_bfd, | |
7851 | &outrel, loc); | |
e515b051 | 7852 | outrel.r_offset += 4; |
70bccea4 AM |
7853 | outrel.r_info |
7854 | = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
70bccea4 AM |
7855 | } |
7856 | } | |
7857 | else if (tls_ty == (TLS_TLS | TLS_DTPREL)) | |
7858 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); | |
7859 | else if (tls_ty == (TLS_TLS | TLS_TPREL)) | |
7860 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); | |
25f23106 | 7861 | else if (indx != 0) |
70bccea4 | 7862 | outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); |
25f23106 AM |
7863 | else if (ifunc != NULL) |
7864 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
7865 | else | |
7866 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
d6e14abc | 7867 | if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD)) |
e515b051 AM |
7868 | { |
7869 | outrel.r_addend += relocation; | |
7870 | if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
7871 | { |
7872 | if (htab->elf.tls_sec == NULL) | |
7873 | outrel.r_addend = 0; | |
7874 | else | |
7875 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
7876 | } | |
e515b051 | 7877 | } |
25f23106 AM |
7878 | loc = rsec->contents; |
7879 | loc += (rsec->reloc_count++ | |
70bccea4 AM |
7880 | * sizeof (Elf32_External_Rela)); |
7881 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
7619e7c7 AM |
7882 | } |
7883 | ||
70bccea4 AM |
7884 | /* Init the .got section contents if we're not |
7885 | emitting a reloc. */ | |
7886 | else | |
7619e7c7 | 7887 | { |
70bccea4 AM |
7888 | bfd_vma value = relocation; |
7889 | ||
f0158f44 | 7890 | if (tls_ty != 0) |
70bccea4 | 7891 | { |
989f9879 AM |
7892 | if (htab->elf.tls_sec == NULL) |
7893 | value = 0; | |
7894 | else | |
7895 | { | |
f0158f44 AM |
7896 | if (tls_ty & TLS_LD) |
7897 | value = 0; | |
7898 | else | |
7899 | value -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 7900 | if (tls_ty & TLS_TPREL) |
989f9879 AM |
7901 | value += DTP_OFFSET - TP_OFFSET; |
7902 | } | |
70bccea4 | 7903 | |
f0158f44 | 7904 | if (tls_ty & (TLS_LD | TLS_GD)) |
7b609f53 | 7905 | { |
95f0d0d2 | 7906 | bfd_put_32 (input_bfd, value, |
ce558b89 | 7907 | htab->elf.sgot->contents + off + 4); |
676ee2b5 | 7908 | value = 1; |
7b609f53 | 7909 | } |
70bccea4 | 7910 | } |
95f0d0d2 | 7911 | bfd_put_32 (input_bfd, value, |
ce558b89 | 7912 | htab->elf.sgot->contents + off); |
7619e7c7 | 7913 | } |
70bccea4 AM |
7914 | |
7915 | off += 4; | |
7916 | if (tls_ty & (TLS_LD | TLS_GD)) | |
7917 | off += 4; | |
7619e7c7 | 7918 | } |
70bccea4 AM |
7919 | while (tls_m != 0); |
7920 | ||
7921 | off = *offp; | |
7922 | *offp = off | 1; | |
7619e7c7 AM |
7923 | } |
7924 | ||
7925 | if (off >= (bfd_vma) -2) | |
7926 | abort (); | |
7927 | ||
70bccea4 AM |
7928 | if ((tls_type & TLS_TLS) != 0) |
7929 | { | |
7930 | if (tls_type != (TLS_TLS | TLS_LD)) | |
7931 | { | |
7932 | if ((tls_mask & TLS_LD) != 0 | |
f749f26e | 7933 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
70bccea4 AM |
7934 | off += 8; |
7935 | if (tls_type != (TLS_TLS | TLS_GD)) | |
7936 | { | |
7937 | if ((tls_mask & TLS_GD) != 0) | |
7938 | off += 8; | |
7939 | if (tls_type != (TLS_TLS | TLS_DTPREL)) | |
7940 | { | |
7941 | if ((tls_mask & TLS_DTPREL) != 0) | |
7942 | off += 4; | |
7943 | } | |
7944 | } | |
7945 | } | |
7946 | } | |
7947 | ||
d3e454b9 AM |
7948 | /* If here for a picfixup, we're done. */ |
7949 | if (r_type != ELF32_R_TYPE (rel->r_info)) | |
c316a17c | 7950 | goto copy_reloc; |
d3e454b9 | 7951 | |
ce558b89 AM |
7952 | relocation = (htab->elf.sgot->output_section->vma |
7953 | + htab->elf.sgot->output_offset | |
e87d4038 AM |
7954 | + off |
7955 | - SYM_VAL (htab->elf.hgot)); | |
7619e7c7 AM |
7956 | |
7957 | /* Addends on got relocations don't make much sense. | |
7958 | x+off@got is actually x@got+off, and since the got is | |
7959 | generated by a hash table traversal, the value in the | |
7960 | got at entry m+n bears little relation to the entry m. */ | |
7961 | if (addend != 0) | |
25f53a85 | 7962 | info->callbacks->einfo |
695344c0 | 7963 | /* xgettext:c-format */ |
174d0a74 | 7964 | (_("%H: non-zero addend on %s reloc against `%s'\n"), |
25f53a85 | 7965 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 7966 | howto->name, |
7619e7c7 AM |
7967 | sym_name); |
7968 | } | |
86c95733 | 7969 | break; |
7619e7c7 | 7970 | |
86c95733 | 7971 | /* Relocations that need no special processing. */ |
7619e7c7 | 7972 | case R_PPC_LOCAL24PC: |
252b5132 RH |
7973 | /* It makes no sense to point a local relocation |
7974 | at a symbol not in this object. */ | |
7b609f53 | 7975 | if (unresolved_reloc) |
252b5132 | 7976 | { |
1a72702b AM |
7977 | (*info->callbacks->undefined_symbol) (info, |
7978 | h->root.root.string, | |
7979 | input_bfd, | |
7980 | input_section, | |
7981 | rel->r_offset, | |
7982 | TRUE); | |
c316a17c | 7983 | goto copy_reloc; |
252b5132 | 7984 | } |
888a7fc3 AM |
7985 | if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info)) |
7986 | { | |
7987 | /* @local on an ifunc does not really make sense since | |
7988 | the ifunc resolver can take you anywhere. More | |
7989 | seriously, calls to ifuncs must go through a plt call | |
7990 | stub, and for pic the plt call stubs uses r30 to | |
7991 | access the PLT. The problem is that a call that is | |
7992 | local won't have the +32k reloc addend trick marking | |
7993 | -fPIC code, so the linker won't know whether r30 is | |
7994 | _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */ | |
695344c0 | 7995 | /* xgettext:c-format */ |
174d0a74 | 7996 | info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"), |
888a7fc3 AM |
7997 | input_bfd, input_section, rel->r_offset, |
7998 | h->root.root.string); | |
7999 | } | |
252b5132 RH |
8000 | break; |
8001 | ||
7619e7c7 AM |
8002 | case R_PPC_DTPREL16: |
8003 | case R_PPC_DTPREL16_LO: | |
8004 | case R_PPC_DTPREL16_HI: | |
8005 | case R_PPC_DTPREL16_HA: | |
989f9879 AM |
8006 | if (htab->elf.tls_sec != NULL) |
8007 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8008 | break; |
8009 | ||
70bccea4 AM |
8010 | /* Relocations that may need to be propagated if this is a shared |
8011 | object. */ | |
7619e7c7 AM |
8012 | case R_PPC_TPREL16: |
8013 | case R_PPC_TPREL16_LO: | |
8014 | case R_PPC_TPREL16_HI: | |
8015 | case R_PPC_TPREL16_HA: | |
766bc656 AM |
8016 | if (h != NULL |
8017 | && h->root.type == bfd_link_hash_undefweak | |
8018 | && h->dynindx == -1) | |
8019 | { | |
8020 | /* Make this relocation against an undefined weak symbol | |
8021 | resolve to zero. This is really just a tweak, since | |
8022 | code using weak externs ought to check that they are | |
8023 | defined before using them. */ | |
8024 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
95f0d0d2 | 8025 | unsigned int insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
8026 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 2); |
8027 | if (insn != 0) | |
95f0d0d2 | 8028 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
8029 | break; |
8030 | } | |
989f9879 AM |
8031 | if (htab->elf.tls_sec != NULL) |
8032 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 | 8033 | /* The TPREL16 relocs shouldn't really be used in shared |
7c8bbca5 AM |
8034 | libs or with non-local symbols as that will result in |
8035 | DT_TEXTREL being set, but support them anyway. */ | |
7619e7c7 AM |
8036 | goto dodyn; |
8037 | ||
8038 | case R_PPC_TPREL32: | |
989f9879 AM |
8039 | if (htab->elf.tls_sec != NULL) |
8040 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7619e7c7 AM |
8041 | goto dodyn; |
8042 | ||
8043 | case R_PPC_DTPREL32: | |
989f9879 AM |
8044 | if (htab->elf.tls_sec != NULL) |
8045 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
7619e7c7 AM |
8046 | goto dodyn; |
8047 | ||
e515b051 AM |
8048 | case R_PPC_DTPMOD32: |
8049 | relocation = 1; | |
8050 | addend = 0; | |
8051 | goto dodyn; | |
8052 | ||
d7128ce4 AM |
8053 | case R_PPC_REL16: |
8054 | case R_PPC_REL16_LO: | |
8055 | case R_PPC_REL16_HI: | |
8056 | case R_PPC_REL16_HA: | |
a680de9a | 8057 | case R_PPC_REL16DX_HA: |
d7128ce4 AM |
8058 | break; |
8059 | ||
7619e7c7 | 8060 | case R_PPC_REL32: |
625af618 AM |
8061 | if (h == NULL || h == htab->elf.hgot) |
8062 | break; | |
8063 | /* fall through */ | |
8064 | ||
8065 | case R_PPC_ADDR32: | |
8066 | case R_PPC_ADDR16: | |
8067 | case R_PPC_ADDR16_LO: | |
8068 | case R_PPC_ADDR16_HI: | |
8069 | case R_PPC_ADDR16_HA: | |
8070 | case R_PPC_UADDR32: | |
8071 | case R_PPC_UADDR16: | |
8072 | goto dodyn; | |
8073 | ||
b9c361e0 JL |
8074 | case R_PPC_VLE_REL8: |
8075 | case R_PPC_VLE_REL15: | |
8076 | case R_PPC_VLE_REL24: | |
625af618 | 8077 | case R_PPC_REL24: |
7619e7c7 AM |
8078 | case R_PPC_REL14: |
8079 | case R_PPC_REL14_BRTAKEN: | |
8080 | case R_PPC_REL14_BRNTAKEN: | |
252b5132 RH |
8081 | /* If these relocations are not to a named symbol, they can be |
8082 | handled right here, no need to bother the dynamic linker. */ | |
89200bf8 | 8083 | if (SYMBOL_CALLS_LOCAL (info, h) |
3b36f7e6 | 8084 | || h == htab->elf.hgot) |
252b5132 | 8085 | break; |
70bccea4 | 8086 | /* fall through */ |
252b5132 | 8087 | |
7619e7c7 | 8088 | case R_PPC_ADDR24: |
7619e7c7 AM |
8089 | case R_PPC_ADDR14: |
8090 | case R_PPC_ADDR14_BRTAKEN: | |
8091 | case R_PPC_ADDR14_BRNTAKEN: | |
0e1862bb | 8092 | if (h != NULL && !bfd_link_pic (info)) |
625af618 AM |
8093 | break; |
8094 | /* fall through */ | |
8095 | ||
7619e7c7 | 8096 | dodyn: |
3348747a NS |
8097 | if ((input_section->flags & SEC_ALLOC) == 0 |
8098 | || is_vxworks_tls) | |
c87b5a93 | 8099 | break; |
c87b5a93 | 8100 | |
287c7eaf AM |
8101 | if (bfd_link_pic (info) |
8102 | ? ((h == NULL | |
8103 | || ppc_elf_hash_entry (h)->dyn_relocs != NULL) | |
8104 | && ((h != NULL && pc_dynrelocs (h)) | |
8105 | || must_be_dyn_reloc (info, r_type))) | |
8106 | : (h != NULL | |
8107 | && ppc_elf_hash_entry (h)->dyn_relocs != NULL)) | |
252b5132 | 8108 | { |
0bb2d96a | 8109 | int skip; |
f95f8542 AM |
8110 | bfd_byte *loc; |
8111 | asection *sreloc; | |
82e66161 AM |
8112 | long indx = 0; |
8113 | ||
252b5132 | 8114 | #ifdef DEBUG |
55fd94b0 AM |
8115 | fprintf (stderr, "ppc_elf_relocate_section needs to " |
8116 | "create relocation for %s\n", | |
70bccea4 AM |
8117 | (h && h->root.root.string |
8118 | ? h->root.root.string : "<unknown>")); | |
252b5132 RH |
8119 | #endif |
8120 | ||
8121 | /* When generating a shared object, these relocations | |
70bccea4 AM |
8122 | are copied into the output file to be resolved at run |
8123 | time. */ | |
0bb2d96a | 8124 | skip = 0; |
5b914448 AM |
8125 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, |
8126 | input_section, | |
8127 | rel->r_offset); | |
0bb2d96a JJ |
8128 | if (outrel.r_offset == (bfd_vma) -1 |
8129 | || outrel.r_offset == (bfd_vma) -2) | |
8130 | skip = (int) outrel.r_offset; | |
252b5132 RH |
8131 | outrel.r_offset += (input_section->output_section->vma |
8132 | + input_section->output_offset); | |
8133 | ||
63f6e94f AM |
8134 | /* Optimize unaligned reloc use. */ |
8135 | if ((r_type == R_PPC_ADDR32 && (outrel.r_offset & 3) != 0) | |
8136 | || (r_type == R_PPC_UADDR32 && (outrel.r_offset & 3) == 0)) | |
8137 | r_type ^= R_PPC_ADDR32 ^ R_PPC_UADDR32; | |
8138 | if ((r_type == R_PPC_ADDR16 && (outrel.r_offset & 1) != 0) | |
8139 | || (r_type == R_PPC_UADDR16 && (outrel.r_offset & 1) == 0)) | |
8140 | r_type ^= R_PPC_ADDR16 ^ R_PPC_UADDR16; | |
8141 | ||
252b5132 RH |
8142 | if (skip) |
8143 | memset (&outrel, 0, sizeof outrel); | |
21d68fcd | 8144 | else if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
252b5132 | 8145 | { |
82e66161 AM |
8146 | indx = h->dynindx; |
8147 | BFD_ASSERT (indx != -1); | |
7619e7c7 | 8148 | unresolved_reloc = FALSE; |
82e66161 | 8149 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
8150 | outrel.r_addend = rel->r_addend; |
8151 | } | |
8152 | else | |
8153 | { | |
47388f4c AM |
8154 | outrel.r_addend = relocation + rel->r_addend; |
8155 | ||
25f23106 | 8156 | if (r_type != R_PPC_ADDR32) |
252b5132 | 8157 | { |
25f23106 AM |
8158 | if (ifunc != NULL) |
8159 | { | |
8160 | /* If we get here when building a static | |
8161 | executable, then the libc startup function | |
8162 | responsible for applying indirect function | |
8163 | relocations is going to complain about | |
8164 | the reloc type. | |
8165 | If we get here when building a dynamic | |
8166 | executable, it will be because we have | |
8167 | a text relocation. The dynamic loader | |
8168 | will set the text segment writable and | |
8169 | non-executable to apply text relocations. | |
8170 | So we'll segfault when trying to run the | |
8171 | indirection function to resolve the reloc. */ | |
25f53a85 | 8172 | info->callbacks->einfo |
695344c0 | 8173 | /* xgettext:c-format */ |
174d0a74 | 8174 | (_("%H: relocation %s for indirect " |
25f53a85 AM |
8175 | "function %s unsupported\n"), |
8176 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
8177 | howto->name, |
8178 | sym_name); | |
8179 | ret = FALSE; | |
8180 | } | |
cf35638d | 8181 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
89200bf8 | 8182 | ; |
252b5132 RH |
8183 | else if (sec == NULL || sec->owner == NULL) |
8184 | { | |
8185 | bfd_set_error (bfd_error_bad_value); | |
89200bf8 | 8186 | ret = FALSE; |
252b5132 RH |
8187 | } |
8188 | else | |
8189 | { | |
8190 | asection *osec; | |
8191 | ||
47388f4c AM |
8192 | /* We are turning this relocation into one |
8193 | against a section symbol. It would be | |
8194 | proper to subtract the symbol's value, | |
8195 | osec->vma, from the emitted reloc addend, | |
25f23106 AM |
8196 | but ld.so expects buggy relocs. |
8197 | FIXME: Why not always use a zero index? */ | |
252b5132 | 8198 | osec = sec->output_section; |
f26a3287 AM |
8199 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
8200 | { | |
8201 | osec = htab->elf.tls_sec; | |
8202 | indx = 0; | |
8203 | } | |
8204 | else | |
74541ad4 | 8205 | { |
74541ad4 | 8206 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
8207 | if (indx == 0) |
8208 | { | |
8209 | osec = htab->elf.text_index_section; | |
8210 | indx = elf_section_data (osec)->dynindx; | |
8211 | } | |
8212 | BFD_ASSERT (indx != 0); | |
74541ad4 | 8213 | } |
f26a3287 AM |
8214 | |
8215 | /* ld.so doesn't expect buggy TLS relocs. | |
8216 | Don't leave the symbol value in the | |
8217 | addend for them. */ | |
8218 | if (IS_PPC_TLS_RELOC (r_type)) | |
8219 | outrel.r_addend -= osec->vma; | |
252b5132 RH |
8220 | } |
8221 | ||
8222 | outrel.r_info = ELF32_R_INFO (indx, r_type); | |
252b5132 | 8223 | } |
25f23106 AM |
8224 | else if (ifunc != NULL) |
8225 | outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
8226 | else | |
8227 | outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
252b5132 RH |
8228 | } |
8229 | ||
82e66161 AM |
8230 | sreloc = elf_section_data (input_section)->sreloc; |
8231 | if (ifunc) | |
8232 | { | |
8233 | sreloc = htab->elf.irelplt; | |
8234 | if (indx == 0) | |
8235 | htab->local_ifunc_resolver = 1; | |
8236 | else if (is_static_defined (h)) | |
8237 | htab->maybe_local_ifunc_resolver = 1; | |
8238 | } | |
8239 | if (sreloc == NULL) | |
8240 | return FALSE; | |
8241 | ||
947216bf AM |
8242 | loc = sreloc->contents; |
8243 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
8244 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 8245 | |
2243deae | 8246 | if (skip == -1) |
c316a17c | 8247 | goto copy_reloc; |
2243deae | 8248 | |
f0158f44 AM |
8249 | /* This reloc will be computed at runtime. Clear the memory |
8250 | so that it contains a predictable value for prelink. */ | |
8251 | if (!skip) | |
2243deae L |
8252 | { |
8253 | relocation = howto->pc_relative ? outrel.r_offset : 0; | |
8254 | addend = 0; | |
8255 | break; | |
8256 | } | |
252b5132 | 8257 | } |
252b5132 RH |
8258 | break; |
8259 | ||
32af9f6e AM |
8260 | case R_PPC_RELAX_PLT: |
8261 | case R_PPC_RELAX_PLTREL24: | |
de972ffa AM |
8262 | if (h != NULL) |
8263 | { | |
32af9f6e AM |
8264 | struct plt_entry *ent; |
8265 | bfd_vma got2_addend = 0; | |
8266 | ||
8267 | if (r_type == R_PPC_RELAX_PLTREL24) | |
8268 | { | |
0e1862bb | 8269 | if (bfd_link_pic (info)) |
32af9f6e AM |
8270 | got2_addend = addend; |
8271 | addend = 0; | |
8272 | } | |
8273 | ent = find_plt_ent (&h->plt.plist, got2, got2_addend); | |
de972ffa AM |
8274 | if (htab->plt_type == PLT_NEW) |
8275 | relocation = (htab->glink->output_section->vma | |
8276 | + htab->glink->output_offset | |
8277 | + ent->glink_offset); | |
8278 | else | |
ce558b89 AM |
8279 | relocation = (htab->elf.splt->output_section->vma |
8280 | + htab->elf.splt->output_offset | |
de972ffa AM |
8281 | + ent->plt.offset); |
8282 | } | |
1a0670f3 | 8283 | /* Fall through. */ |
b4a38de6 | 8284 | |
32af9f6e | 8285 | case R_PPC_RELAX: |
9abc968f | 8286 | { |
53291d1f AM |
8287 | const int *stub; |
8288 | size_t size; | |
8289 | size_t insn_offset = rel->r_offset; | |
8290 | unsigned int insn; | |
9abc968f | 8291 | |
0e1862bb | 8292 | if (bfd_link_pic (info)) |
53291d1f AM |
8293 | { |
8294 | relocation -= (input_section->output_section->vma | |
8295 | + input_section->output_offset | |
8296 | + rel->r_offset - 4); | |
8297 | stub = shared_stub_entry; | |
95f0d0d2 AM |
8298 | bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12); |
8299 | bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8); | |
8300 | bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4); | |
53291d1f AM |
8301 | stub += 3; |
8302 | size = ARRAY_SIZE (shared_stub_entry) - 3; | |
8303 | } | |
8304 | else | |
8305 | { | |
8306 | stub = stub_entry; | |
8307 | size = ARRAY_SIZE (stub_entry); | |
8308 | } | |
9abc968f | 8309 | |
9abc968f | 8310 | relocation += addend; |
0e1862bb | 8311 | if (bfd_link_relocatable (info)) |
53291d1f AM |
8312 | relocation = 0; |
8313 | ||
8314 | /* First insn is HA, second is LO. */ | |
8315 | insn = *stub++; | |
8316 | insn |= ((relocation + 0x8000) >> 16) & 0xffff; | |
95f0d0d2 | 8317 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8318 | insn_offset += 4; |
8319 | ||
8320 | insn = *stub++; | |
8321 | insn |= relocation & 0xffff; | |
95f0d0d2 | 8322 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8323 | insn_offset += 4; |
8324 | size -= 2; | |
8325 | ||
8326 | while (size != 0) | |
8327 | { | |
8328 | insn = *stub++; | |
8329 | --size; | |
95f0d0d2 | 8330 | bfd_put_32 (input_bfd, insn, contents + insn_offset); |
53291d1f AM |
8331 | insn_offset += 4; |
8332 | } | |
9bc4e62b NS |
8333 | |
8334 | /* Rewrite the reloc and convert one of the trailing nop | |
8335 | relocs to describe this relocation. */ | |
8336 | BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE); | |
8337 | /* The relocs are at the bottom 2 bytes */ | |
c316a17c AM |
8338 | wrel->r_offset = rel->r_offset + d_offset; |
8339 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA); | |
8340 | wrel->r_addend = rel->r_addend; | |
8341 | memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel)); | |
8342 | wrel++, rel++; | |
8343 | wrel->r_offset += 4; | |
8344 | wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO); | |
9abc968f | 8345 | } |
8517fae7 | 8346 | continue; |
deaaf2f3 | 8347 | |
70bccea4 | 8348 | /* Indirect .sdata relocation. */ |
7619e7c7 | 8349 | case R_PPC_EMB_SDAI16: |
c9a2f333 | 8350 | BFD_ASSERT (htab->sdata[0].section != NULL); |
bd6c6e2b AM |
8351 | if (!is_static_defined (htab->sdata[0].sym)) |
8352 | { | |
8353 | unresolved_reloc = TRUE; | |
8354 | break; | |
8355 | } | |
7619e7c7 | 8356 | relocation |
76750a2f AM |
8357 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0], |
8358 | h, relocation, rel); | |
bd6c6e2b | 8359 | addend = 0; |
252b5132 RH |
8360 | break; |
8361 | ||
70bccea4 | 8362 | /* Indirect .sdata2 relocation. */ |
7619e7c7 | 8363 | case R_PPC_EMB_SDA2I16: |
c9a2f333 | 8364 | BFD_ASSERT (htab->sdata[1].section != NULL); |
bd6c6e2b AM |
8365 | if (!is_static_defined (htab->sdata[1].sym)) |
8366 | { | |
8367 | unresolved_reloc = TRUE; | |
8368 | break; | |
8369 | } | |
7619e7c7 | 8370 | relocation |
76750a2f AM |
8371 | = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1], |
8372 | h, relocation, rel); | |
bd6c6e2b | 8373 | addend = 0; |
252b5132 RH |
8374 | break; |
8375 | ||
70bccea4 AM |
8376 | /* Handle the TOC16 reloc. We want to use the offset within the .got |
8377 | section, not the actual VMA. This is appropriate when generating | |
8378 | an embedded ELF object, for which the .got section acts like the | |
8379 | AIX .toc section. */ | |
7619e7c7 | 8380 | case R_PPC_TOC16: /* phony GOT16 relocations */ |
3b4f3a11 AM |
8381 | if (sec == NULL || sec->output_section == NULL) |
8382 | { | |
8383 | unresolved_reloc = TRUE; | |
8384 | break; | |
8385 | } | |
fd361982 AM |
8386 | BFD_ASSERT (strcmp (bfd_section_name (sec), ".got") == 0 |
8387 | || strcmp (bfd_section_name (sec), ".cgot") == 0); | |
252b5132 | 8388 | |
3b4f3a11 | 8389 | addend -= sec->output_section->vma + sec->output_offset + 0x8000; |
252b5132 RH |
8390 | break; |
8391 | ||
7619e7c7 | 8392 | case R_PPC_PLTREL24: |
f75e0e33 AM |
8393 | if (h != NULL && ifunc == NULL) |
8394 | { | |
cbf95972 AM |
8395 | struct plt_entry *ent; |
8396 | ||
8397 | ent = find_plt_ent (&h->plt.plist, got2, | |
8398 | bfd_link_pic (info) ? addend : 0); | |
f75e0e33 | 8399 | if (ent == NULL |
ce558b89 | 8400 | || htab->elf.splt == NULL) |
f75e0e33 AM |
8401 | { |
8402 | /* We didn't make a PLT entry for this symbol. This | |
8403 | happens when statically linking PIC code, or when | |
8404 | using -Bsymbolic. */ | |
8405 | } | |
8406 | else | |
8407 | { | |
8408 | /* Relocation is to the entry for this symbol in the | |
8409 | procedure linkage table. */ | |
8410 | unresolved_reloc = FALSE; | |
8411 | if (htab->plt_type == PLT_NEW) | |
8412 | relocation = (htab->glink->output_section->vma | |
8413 | + htab->glink->output_offset | |
8414 | + ent->glink_offset); | |
8415 | else | |
ce558b89 AM |
8416 | relocation = (htab->elf.splt->output_section->vma |
8417 | + htab->elf.splt->output_offset | |
f75e0e33 AM |
8418 | + ent->plt.offset); |
8419 | } | |
8420 | } | |
252b5132 | 8421 | |
f75e0e33 AM |
8422 | /* R_PPC_PLTREL24 is rather special. If non-zero, the |
8423 | addend specifies the GOT pointer offset within .got2. | |
8424 | Don't apply it to the relocation field. */ | |
8425 | addend = 0; | |
8da6118f | 8426 | break; |
252b5132 | 8427 | |
23cedd1d AM |
8428 | case R_PPC_PLTSEQ: |
8429 | case R_PPC_PLTCALL: | |
08be3224 AM |
8430 | case R_PPC_PLT16_LO: |
8431 | case R_PPC_PLT16_HI: | |
8432 | case R_PPC_PLT16_HA: | |
2d7ad24e | 8433 | plt_list = NULL; |
08be3224 AM |
8434 | if (h != NULL) |
8435 | plt_list = &h->plt.plist; | |
2d7ad24e AM |
8436 | else if (ifunc != NULL) |
8437 | plt_list = ifunc; | |
8438 | else if (local_got_offsets != NULL) | |
8439 | { | |
8440 | struct plt_entry **local_plt; | |
8441 | local_plt = (struct plt_entry **) (local_got_offsets | |
8442 | + symtab_hdr->sh_info); | |
8443 | plt_list = local_plt + r_symndx; | |
8444 | } | |
08be3224 AM |
8445 | unresolved_reloc = TRUE; |
8446 | if (plt_list != NULL) | |
8447 | { | |
8448 | struct plt_entry *ent; | |
8449 | ||
8450 | ent = find_plt_ent (plt_list, got2, | |
8451 | bfd_link_pic (info) ? addend : 0); | |
2d7ad24e | 8452 | if (ent != NULL && ent->plt.offset != (bfd_vma) -1) |
08be3224 | 8453 | { |
2d7ad24e AM |
8454 | asection *plt; |
8455 | ||
08be3224 | 8456 | unresolved_reloc = FALSE; |
2d7ad24e AM |
8457 | plt = htab->elf.splt; |
8458 | if (!htab->elf.dynamic_sections_created | |
8459 | || h == NULL | |
8460 | || h->dynindx == -1) | |
8461 | { | |
8462 | if (ifunc != NULL) | |
8463 | plt = htab->elf.iplt; | |
8464 | else | |
8465 | plt = htab->pltlocal; | |
8466 | } | |
8467 | relocation = (plt->output_section->vma | |
8468 | + plt->output_offset | |
08be3224 AM |
8469 | + ent->plt.offset); |
8470 | if (bfd_link_pic (info)) | |
8471 | { | |
8472 | bfd_vma got = 0; | |
8473 | ||
8474 | if (ent->addend >= 32768) | |
8475 | got = (ent->addend | |
8476 | + ent->sec->output_section->vma | |
8477 | + ent->sec->output_offset); | |
8478 | else | |
8479 | got = SYM_VAL (htab->elf.hgot); | |
8480 | relocation -= got; | |
8481 | } | |
8482 | } | |
8483 | } | |
8484 | addend = 0; | |
8485 | break; | |
8486 | ||
70bccea4 | 8487 | /* Relocate against _SDA_BASE_. */ |
7619e7c7 | 8488 | case R_PPC_SDAREL16: |
252b5132 RH |
8489 | { |
8490 | const char *name; | |
bd6c6e2b | 8491 | struct elf_link_hash_entry *sda = htab->sdata[0].sym; |
252b5132 | 8492 | |
bd6c6e2b AM |
8493 | if (sec == NULL |
8494 | || sec->output_section == NULL | |
8495 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
8496 | { |
8497 | unresolved_reloc = TRUE; | |
8498 | break; | |
8499 | } | |
bd6c6e2b | 8500 | addend -= SYM_VAL (sda); |
3b4f3a11 | 8501 | |
fd361982 | 8502 | name = bfd_section_name (sec->output_section); |
93d1b056 AM |
8503 | if (!(strcmp (name, ".sdata") == 0 |
8504 | || strcmp (name, ".sbss") == 0)) | |
252b5132 | 8505 | { |
cf97bcb0 | 8506 | _bfd_error_handler |
695344c0 | 8507 | /* xgettext:c-format */ |
cf97bcb0 AM |
8508 | (_("%pB: the target (%s) of a %s relocation is " |
8509 | "in the wrong output section (%s)"), | |
d003868e | 8510 | input_bfd, |
55fd94b0 AM |
8511 | sym_name, |
8512 | howto->name, | |
8513 | name); | |
252b5132 | 8514 | } |
252b5132 RH |
8515 | } |
8516 | break; | |
8517 | ||
70bccea4 | 8518 | /* Relocate against _SDA2_BASE_. */ |
7619e7c7 | 8519 | case R_PPC_EMB_SDA2REL: |
252b5132 RH |
8520 | { |
8521 | const char *name; | |
bd6c6e2b | 8522 | struct elf_link_hash_entry *sda = htab->sdata[1].sym; |
252b5132 | 8523 | |
bd6c6e2b AM |
8524 | if (sec == NULL |
8525 | || sec->output_section == NULL | |
8526 | || !is_static_defined (sda)) | |
3b4f3a11 AM |
8527 | { |
8528 | unresolved_reloc = TRUE; | |
8529 | break; | |
8530 | } | |
bd6c6e2b | 8531 | addend -= SYM_VAL (sda); |
3b4f3a11 | 8532 | |
fd361982 | 8533 | name = bfd_section_name (sec->output_section); |
93d1b056 AM |
8534 | if (!(strcmp (name, ".sdata2") == 0 |
8535 | || strcmp (name, ".sbss2") == 0)) | |
252b5132 | 8536 | { |
cf97bcb0 | 8537 | _bfd_error_handler |
695344c0 | 8538 | /* xgettext:c-format */ |
cf97bcb0 AM |
8539 | (_("%pB: the target (%s) of a %s relocation is " |
8540 | "in the wrong output section (%s)"), | |
d003868e | 8541 | input_bfd, |
55fd94b0 AM |
8542 | sym_name, |
8543 | howto->name, | |
8544 | name); | |
252b5132 | 8545 | } |
252b5132 RH |
8546 | } |
8547 | break; | |
8548 | ||
b9c361e0 | 8549 | case R_PPC_VLE_LO16A: |
86c95733 | 8550 | relocation = relocation + addend; |
08dc996f AM |
8551 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8552 | contents + rel->r_offset, relocation, | |
8553 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8554 | goto copy_reloc; |
b9c361e0 JL |
8555 | |
8556 | case R_PPC_VLE_LO16D: | |
86c95733 | 8557 | relocation = relocation + addend; |
08dc996f AM |
8558 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8559 | contents + rel->r_offset, relocation, | |
8560 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8561 | goto copy_reloc; |
b9c361e0 JL |
8562 | |
8563 | case R_PPC_VLE_HI16A: | |
86c95733 | 8564 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
8565 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8566 | contents + rel->r_offset, relocation, | |
8567 | split16a_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8568 | goto copy_reloc; |
b9c361e0 JL |
8569 | |
8570 | case R_PPC_VLE_HI16D: | |
86c95733 | 8571 | relocation = (relocation + addend) >> 16; |
08dc996f AM |
8572 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8573 | contents + rel->r_offset, relocation, | |
8574 | split16d_type, htab->params->vle_reloc_fixup); | |
c316a17c | 8575 | goto copy_reloc; |
b9c361e0 JL |
8576 | |
8577 | case R_PPC_VLE_HA16A: | |
86c95733 | 8578 | relocation = (relocation + addend + 0x8000) >> 16; |
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_HA16D: | |
86c95733 | 8585 | relocation = (relocation + addend + 0x8000) >> 16; |
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 | 8590 | |
70bccea4 | 8591 | /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ |
7619e7c7 | 8592 | case R_PPC_EMB_SDA21: |
b9c361e0 | 8593 | case R_PPC_VLE_SDA21: |
7619e7c7 | 8594 | case R_PPC_EMB_RELSDA: |
b9c361e0 | 8595 | case R_PPC_VLE_SDA21_LO: |
252b5132 RH |
8596 | { |
8597 | const char *name; | |
8598 | int reg; | |
86c95733 | 8599 | unsigned int insn; |
bd6c6e2b | 8600 | struct elf_link_hash_entry *sda = NULL; |
252b5132 | 8601 | |
3b4f3a11 AM |
8602 | if (sec == NULL || sec->output_section == NULL) |
8603 | { | |
8604 | unresolved_reloc = TRUE; | |
8605 | break; | |
8606 | } | |
8607 | ||
fd361982 | 8608 | name = bfd_section_name (sec->output_section); |
93d1b056 AM |
8609 | if (strcmp (name, ".sdata") == 0 |
8610 | || strcmp (name, ".sbss") == 0) | |
252b5132 RH |
8611 | { |
8612 | reg = 13; | |
bd6c6e2b | 8613 | sda = htab->sdata[0].sym; |
252b5132 | 8614 | } |
93d1b056 AM |
8615 | else if (strcmp (name, ".sdata2") == 0 |
8616 | || strcmp (name, ".sbss2") == 0) | |
252b5132 RH |
8617 | { |
8618 | reg = 2; | |
bd6c6e2b | 8619 | sda = htab->sdata[1].sym; |
252b5132 | 8620 | } |
8da6118f KH |
8621 | else if (strcmp (name, ".PPC.EMB.sdata0") == 0 |
8622 | || strcmp (name, ".PPC.EMB.sbss0") == 0) | |
252b5132 RH |
8623 | { |
8624 | reg = 0; | |
8625 | } | |
252b5132 RH |
8626 | else |
8627 | { | |
cf97bcb0 | 8628 | _bfd_error_handler |
695344c0 | 8629 | /* xgettext:c-format */ |
cf97bcb0 AM |
8630 | (_("%pB: the target (%s) of a %s relocation is " |
8631 | "in the wrong output section (%s)"), | |
d003868e | 8632 | input_bfd, |
55fd94b0 AM |
8633 | sym_name, |
8634 | howto->name, | |
8635 | name); | |
252b5132 RH |
8636 | |
8637 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 8638 | ret = FALSE; |
c316a17c | 8639 | goto copy_reloc; |
252b5132 RH |
8640 | } |
8641 | ||
bd6c6e2b AM |
8642 | if (sda != NULL) |
8643 | { | |
8644 | if (!is_static_defined (sda)) | |
8645 | { | |
8646 | unresolved_reloc = TRUE; | |
8647 | break; | |
8648 | } | |
8649 | addend -= SYM_VAL (sda); | |
8650 | } | |
8651 | ||
6f5601c4 AM |
8652 | if (r_type == R_PPC_EMB_RELSDA) |
8653 | break; | |
8654 | ||
8655 | /* The PowerPC Embedded Application Binary Interface | |
8656 | version 1.0 insanely chose to specify R_PPC_EMB_SDA21 | |
8657 | operating on a 24-bit field at r_offset. GNU as and | |
8658 | GNU ld have always assumed R_PPC_EMB_SDA21 operates on | |
8659 | a 32-bit bit insn at r_offset. Cope with object file | |
8660 | producers that possibly comply with the EABI in | |
8661 | generating an odd r_offset for big-endian objects. */ | |
8662 | if (r_type == R_PPC_EMB_SDA21) | |
8663 | rel->r_offset &= ~1; | |
8664 | ||
95f0d0d2 | 8665 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
b9c361e0 JL |
8666 | if (reg == 0 |
8667 | && (r_type == R_PPC_VLE_SDA21 | |
8668 | || r_type == R_PPC_VLE_SDA21_LO)) | |
8669 | { | |
86c95733 AM |
8670 | relocation = relocation + addend; |
8671 | addend = 0; | |
8672 | ||
8673 | /* Force e_li insn, keeping RT from original insn. */ | |
8674 | insn &= 0x1f << 21; | |
8675 | insn |= 28u << 26; | |
8676 | ||
8677 | /* We have an li20 field, bits 17..20, 11..15, 21..31. */ | |
8678 | /* Top 4 bits of value to 17..20. */ | |
8679 | insn |= (relocation & 0xf0000) >> 5; | |
8680 | /* Next 5 bits of the value to 11..15. */ | |
8681 | insn |= (relocation & 0xf800) << 5; | |
8682 | /* And the final 11 bits of the value to bits 21 to 31. */ | |
8683 | insn |= relocation & 0x7ff; | |
8684 | ||
95f0d0d2 | 8685 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
c3301df1 AM |
8686 | |
8687 | if (r_type == R_PPC_VLE_SDA21 | |
8688 | && ((relocation + 0x80000) & 0xffffffff) > 0x100000) | |
8689 | goto overflow; | |
c316a17c | 8690 | goto copy_reloc; |
b9c361e0 | 8691 | } |
6f5601c4 AM |
8692 | /* Fill in register field. */ |
8693 | insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); | |
95f0d0d2 | 8694 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
252b5132 RH |
8695 | } |
8696 | break; | |
8697 | ||
b9c361e0 JL |
8698 | case R_PPC_VLE_SDAREL_LO16A: |
8699 | case R_PPC_VLE_SDAREL_LO16D: | |
8700 | case R_PPC_VLE_SDAREL_HI16A: | |
8701 | case R_PPC_VLE_SDAREL_HI16D: | |
8702 | case R_PPC_VLE_SDAREL_HA16A: | |
8703 | case R_PPC_VLE_SDAREL_HA16D: | |
8704 | { | |
8705 | bfd_vma value; | |
8706 | const char *name; | |
b9c361e0 JL |
8707 | struct elf_link_hash_entry *sda = NULL; |
8708 | ||
8709 | if (sec == NULL || sec->output_section == NULL) | |
8710 | { | |
8711 | unresolved_reloc = TRUE; | |
8712 | break; | |
8713 | } | |
8714 | ||
fd361982 | 8715 | name = bfd_section_name (sec->output_section); |
93d1b056 AM |
8716 | if (strcmp (name, ".sdata") == 0 |
8717 | || strcmp (name, ".sbss") == 0) | |
5499c7c7 | 8718 | sda = htab->sdata[0].sym; |
93d1b056 AM |
8719 | else if (strcmp (name, ".sdata2") == 0 |
8720 | || strcmp (name, ".sbss2") == 0) | |
5499c7c7 | 8721 | sda = htab->sdata[1].sym; |
b9c361e0 JL |
8722 | else |
8723 | { | |
4eca0228 | 8724 | _bfd_error_handler |
695344c0 | 8725 | /* xgettext:c-format */ |
871b3ab2 | 8726 | (_("%pB: the target (%s) of a %s relocation is " |
b9c361e0 JL |
8727 | "in the wrong output section (%s)"), |
8728 | input_bfd, | |
8729 | sym_name, | |
8730 | howto->name, | |
8731 | name); | |
8732 | ||
8733 | bfd_set_error (bfd_error_bad_value); | |
8734 | ret = FALSE; | |
c316a17c | 8735 | goto copy_reloc; |
b9c361e0 JL |
8736 | } |
8737 | ||
5499c7c7 | 8738 | if (sda == NULL || !is_static_defined (sda)) |
b9c361e0 | 8739 | { |
5499c7c7 AM |
8740 | unresolved_reloc = TRUE; |
8741 | break; | |
b9c361e0 | 8742 | } |
5499c7c7 | 8743 | value = relocation + addend - SYM_VAL (sda); |
86c95733 AM |
8744 | |
8745 | if (r_type == R_PPC_VLE_SDAREL_LO16A) | |
08dc996f AM |
8746 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8747 | contents + rel->r_offset, value, | |
8748 | split16a_type, | |
8749 | htab->params->vle_reloc_fixup); | |
86c95733 | 8750 | else if (r_type == R_PPC_VLE_SDAREL_LO16D) |
08dc996f AM |
8751 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8752 | contents + rel->r_offset, value, | |
8753 | split16d_type, | |
8754 | htab->params->vle_reloc_fixup); | |
86c95733 | 8755 | else if (r_type == R_PPC_VLE_SDAREL_HI16A) |
b9c361e0 | 8756 | { |
86c95733 | 8757 | value = value >> 16; |
08dc996f AM |
8758 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8759 | contents + rel->r_offset, value, | |
8760 | split16a_type, | |
8761 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 8762 | } |
86c95733 | 8763 | else if (r_type == R_PPC_VLE_SDAREL_HI16D) |
b9c361e0 | 8764 | { |
86c95733 | 8765 | value = value >> 16; |
08dc996f AM |
8766 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8767 | contents + rel->r_offset, value, | |
8768 | split16d_type, | |
8769 | htab->params->vle_reloc_fixup); | |
b9c361e0 | 8770 | } |
86c95733 | 8771 | else if (r_type == R_PPC_VLE_SDAREL_HA16A) |
b9c361e0 | 8772 | { |
86c95733 | 8773 | value = (value + 0x8000) >> 16; |
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); | |
b9c361e0 | 8778 | } |
86c95733 | 8779 | else if (r_type == R_PPC_VLE_SDAREL_HA16D) |
b9c361e0 | 8780 | { |
86c95733 | 8781 | value = (value + 0x8000) >> 16; |
08dc996f AM |
8782 | ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset, |
8783 | contents + rel->r_offset, value, | |
8784 | split16d_type, | |
8785 | htab->params->vle_reloc_fixup); | |
b9c361e0 JL |
8786 | } |
8787 | } | |
c316a17c | 8788 | goto copy_reloc; |
b9c361e0 | 8789 | |
83eef883 AFB |
8790 | case R_PPC_VLE_ADDR20: |
8791 | ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation); | |
24872cb3 | 8792 | goto copy_reloc; |
83eef883 | 8793 | |
70bccea4 | 8794 | /* Relocate against the beginning of the section. */ |
7619e7c7 AM |
8795 | case R_PPC_SECTOFF: |
8796 | case R_PPC_SECTOFF_LO: | |
8797 | case R_PPC_SECTOFF_HI: | |
8798 | case R_PPC_SECTOFF_HA: | |
3b4f3a11 AM |
8799 | if (sec == NULL || sec->output_section == NULL) |
8800 | { | |
8801 | unresolved_reloc = TRUE; | |
8802 | break; | |
8803 | } | |
252b5132 | 8804 | addend -= sec->output_section->vma; |
252b5132 RH |
8805 | break; |
8806 | ||
70bccea4 | 8807 | /* Negative relocations. */ |
7619e7c7 AM |
8808 | case R_PPC_EMB_NADDR32: |
8809 | case R_PPC_EMB_NADDR16: | |
8810 | case R_PPC_EMB_NADDR16_LO: | |
8811 | case R_PPC_EMB_NADDR16_HI: | |
8812 | case R_PPC_EMB_NADDR16_HA: | |
8da6118f | 8813 | addend -= 2 * relocation; |
252b5132 RH |
8814 | break; |
8815 | ||
7619e7c7 AM |
8816 | case R_PPC_COPY: |
8817 | case R_PPC_GLOB_DAT: | |
8818 | case R_PPC_JMP_SLOT: | |
8819 | case R_PPC_RELATIVE: | |
e054468f | 8820 | case R_PPC_IRELATIVE: |
7619e7c7 AM |
8821 | case R_PPC_PLT32: |
8822 | case R_PPC_PLTREL32: | |
7619e7c7 AM |
8823 | case R_PPC_ADDR30: |
8824 | case R_PPC_EMB_RELSEC16: | |
8825 | case R_PPC_EMB_RELST_LO: | |
8826 | case R_PPC_EMB_RELST_HI: | |
8827 | case R_PPC_EMB_RELST_HA: | |
8828 | case R_PPC_EMB_BIT_FLD: | |
cf97bcb0 AM |
8829 | /* xgettext:c-format */ |
8830 | _bfd_error_handler (_("%pB: %s unsupported"), | |
8831 | input_bfd, howto->name); | |
252b5132 RH |
8832 | |
8833 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 8834 | ret = FALSE; |
c316a17c | 8835 | goto copy_reloc; |
7619e7c7 | 8836 | } |
252b5132 | 8837 | |
23cedd1d AM |
8838 | switch (r_type) |
8839 | { | |
8840 | default: | |
8841 | break; | |
8842 | ||
8843 | case R_PPC_PLTCALL: | |
8844 | if (unresolved_reloc) | |
8845 | { | |
8846 | bfd_byte *p = contents + rel->r_offset; | |
8847 | unsigned int insn = bfd_get_32 (input_bfd, p); | |
8848 | insn &= 1; | |
8849 | bfd_put_32 (input_bfd, B | insn, p); | |
8850 | unresolved_reloc = save_unresolved_reloc; | |
8851 | r_type = R_PPC_REL24; | |
8852 | howto = ppc_elf_howto_table[r_type]; | |
8853 | } | |
8854 | else if (htab->plt_type != PLT_NEW) | |
8855 | info->callbacks->einfo | |
482f3505 | 8856 | (_("%X%P: %H: %s relocation unsupported for bss-plt\n"), |
23cedd1d AM |
8857 | input_bfd, input_section, rel->r_offset, |
8858 | howto->name); | |
8859 | break; | |
8860 | ||
8861 | case R_PPC_PLTSEQ: | |
8862 | case R_PPC_PLT16_HA: | |
8863 | case R_PPC_PLT16_LO: | |
8864 | if (unresolved_reloc) | |
8865 | { | |
8866 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
8867 | bfd_put_32 (input_bfd, NOP, p); | |
8868 | unresolved_reloc = FALSE; | |
8869 | r_type = R_PPC_NONE; | |
8870 | howto = ppc_elf_howto_table[r_type]; | |
8871 | } | |
8872 | else if (htab->plt_type != PLT_NEW) | |
8873 | info->callbacks->einfo | |
482f3505 | 8874 | (_("%X%P: %H: %s relocation unsupported for bss-plt\n"), |
23cedd1d AM |
8875 | input_bfd, input_section, rel->r_offset, |
8876 | howto->name); | |
8877 | break; | |
8878 | } | |
8879 | ||
7619e7c7 AM |
8880 | /* Do any further special processing. */ |
8881 | switch (r_type) | |
8882 | { | |
8883 | default: | |
8884 | break; | |
8885 | ||
8886 | case R_PPC_ADDR16_HA: | |
d7128ce4 | 8887 | case R_PPC_REL16_HA: |
a680de9a | 8888 | case R_PPC_REL16DX_HA: |
7619e7c7 AM |
8889 | case R_PPC_SECTOFF_HA: |
8890 | case R_PPC_TPREL16_HA: | |
8891 | case R_PPC_DTPREL16_HA: | |
7619e7c7 AM |
8892 | case R_PPC_EMB_NADDR16_HA: |
8893 | case R_PPC_EMB_RELST_HA: | |
8894 | /* It's just possible that this symbol is a weak symbol | |
7b609f53 | 8895 | that's not actually defined anywhere. In that case, |
7619e7c7 AM |
8896 | 'sec' would be NULL, and we should leave the symbol |
8897 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
8898 | if (sec == NULL) |
8899 | break; | |
1a0670f3 | 8900 | /* Fall through. */ |
5c5f6e17 AM |
8901 | |
8902 | case R_PPC_PLT16_HA: | |
8903 | case R_PPC_GOT16_HA: | |
8904 | case R_PPC_GOT_TLSGD16_HA: | |
8905 | case R_PPC_GOT_TLSLD16_HA: | |
8906 | case R_PPC_GOT_TPREL16_HA: | |
8907 | case R_PPC_GOT_DTPREL16_HA: | |
8908 | /* Add 0x10000 if sign bit in 0:15 is set. | |
8909 | Bits 0:15 are not used. */ | |
8910 | addend += 0x8000; | |
7619e7c7 | 8911 | break; |
1fe532cf AM |
8912 | |
8913 | case R_PPC_ADDR16: | |
8914 | case R_PPC_ADDR16_LO: | |
8915 | case R_PPC_GOT16: | |
8916 | case R_PPC_GOT16_LO: | |
8917 | case R_PPC_SDAREL16: | |
8918 | case R_PPC_SECTOFF: | |
8919 | case R_PPC_SECTOFF_LO: | |
8920 | case R_PPC_DTPREL16: | |
8921 | case R_PPC_DTPREL16_LO: | |
8922 | case R_PPC_TPREL16: | |
8923 | case R_PPC_TPREL16_LO: | |
8924 | case R_PPC_GOT_TLSGD16: | |
8925 | case R_PPC_GOT_TLSGD16_LO: | |
8926 | case R_PPC_GOT_TLSLD16: | |
8927 | case R_PPC_GOT_TLSLD16_LO: | |
8928 | case R_PPC_GOT_DTPREL16: | |
8929 | case R_PPC_GOT_DTPREL16_LO: | |
8930 | case R_PPC_GOT_TPREL16: | |
8931 | case R_PPC_GOT_TPREL16_LO: | |
8932 | { | |
8933 | /* The 32-bit ABI lacks proper relocations to deal with | |
8934 | certain 64-bit instructions. Prevent damage to bits | |
8935 | that make up part of the insn opcode. */ | |
8936 | unsigned int insn, mask, lobit; | |
8937 | ||
95f0d0d2 | 8938 | insn = bfd_get_32 (input_bfd, |
c316a17c | 8939 | contents + rel->r_offset - d_offset); |
1fe532cf AM |
8940 | mask = 0; |
8941 | if (is_insn_ds_form (insn)) | |
8942 | mask = 3; | |
8943 | else if (is_insn_dq_form (insn)) | |
8944 | mask = 15; | |
8945 | else | |
8946 | break; | |
a680de9a PB |
8947 | relocation += addend; |
8948 | addend = insn & mask; | |
8949 | lobit = mask & relocation; | |
1fe532cf AM |
8950 | if (lobit != 0) |
8951 | { | |
a680de9a | 8952 | relocation ^= lobit; |
1fe532cf | 8953 | info->callbacks->einfo |
695344c0 | 8954 | /* xgettext:c-format */ |
174d0a74 | 8955 | (_("%H: error: %s against `%s' not a multiple of %u\n"), |
1fe532cf AM |
8956 | input_bfd, input_section, rel->r_offset, |
8957 | howto->name, sym_name, mask + 1); | |
8958 | bfd_set_error (bfd_error_bad_value); | |
8959 | ret = FALSE; | |
8960 | } | |
1fe532cf AM |
8961 | } |
8962 | break; | |
252b5132 RH |
8963 | } |
8964 | ||
252b5132 | 8965 | #ifdef DEBUG |
55fd94b0 AM |
8966 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " |
8967 | "offset = %ld, addend = %ld\n", | |
252b5132 | 8968 | howto->name, |
8da6118f | 8969 | (int) r_type, |
252b5132 RH |
8970 | sym_name, |
8971 | r_symndx, | |
7619e7c7 | 8972 | (long) rel->r_offset, |
8da6118f | 8973 | (long) addend); |
252b5132 RH |
8974 | #endif |
8975 | ||
7619e7c7 AM |
8976 | if (unresolved_reloc |
8977 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
8978 | && h->def_dynamic) |
8979 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
8980 | rel->r_offset) != (bfd_vma) -1) | |
7619e7c7 | 8981 | { |
25f53a85 | 8982 | info->callbacks->einfo |
695344c0 | 8983 | /* xgettext:c-format */ |
174d0a74 | 8984 | (_("%H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 8985 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 8986 | howto->name, |
7619e7c7 AM |
8987 | sym_name); |
8988 | ret = FALSE; | |
8989 | } | |
8990 | ||
86c95733 AM |
8991 | /* 16-bit fields in insns mostly have signed values, but a |
8992 | few insns have 16-bit unsigned values. Really, we should | |
8993 | have different reloc types. */ | |
8994 | if (howto->complain_on_overflow != complain_overflow_dont | |
8995 | && howto->dst_mask == 0xffff | |
8996 | && (input_section->flags & SEC_CODE) != 0) | |
8997 | { | |
8998 | enum complain_overflow complain = complain_overflow_signed; | |
8999 | ||
9000 | if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0) | |
9001 | { | |
9002 | unsigned int insn; | |
9003 | ||
9004 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 9005 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac | 9006 | complain = complain_overflow_bitfield; |
2365f8d7 AM |
9007 | else if ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
9008 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
9009 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
86c95733 AM |
9010 | complain = complain_overflow_unsigned; |
9011 | } | |
9012 | if (howto->complain_on_overflow != complain) | |
9013 | { | |
9014 | alt_howto = *howto; | |
9015 | alt_howto.complain_on_overflow = complain; | |
9016 | howto = &alt_howto; | |
9017 | } | |
9018 | } | |
9019 | ||
a680de9a PB |
9020 | if (r_type == R_PPC_REL16DX_HA) |
9021 | { | |
9022 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
9023 | if (rel->r_offset + 4 > input_section->size) | |
9024 | r = bfd_reloc_outofrange; | |
9025 | else | |
9026 | { | |
9027 | unsigned int insn; | |
9028 | ||
9029 | relocation += addend; | |
9030 | relocation -= (rel->r_offset | |
9031 | + input_section->output_offset | |
9032 | + input_section->output_section->vma); | |
9033 | relocation >>= 16; | |
9034 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9035 | insn &= ~0x1fffc1; | |
9036 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
9037 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9038 | r = bfd_reloc_ok; | |
9039 | } | |
9040 | } | |
9041 | else | |
9042 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
9043 | rel->r_offset, relocation, addend); | |
252b5132 | 9044 | |
7619e7c7 | 9045 | if (r != bfd_reloc_ok) |
252b5132 | 9046 | { |
7619e7c7 | 9047 | if (r == bfd_reloc_overflow) |
252b5132 | 9048 | { |
c3301df1 | 9049 | overflow: |
8131c122 AM |
9050 | /* On code like "if (foo) foo();" don't report overflow |
9051 | on a branch to zero when foo is undefined. */ | |
9052 | if (!warned | |
9053 | && !(h != NULL | |
9054 | && (h->root.type == bfd_link_hash_undefweak | |
9055 | || h->root.type == bfd_link_hash_undefined) | |
9056 | && is_branch_reloc (r_type))) | |
1a72702b AM |
9057 | info->callbacks->reloc_overflow |
9058 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
9059 | rel->r_addend, input_bfd, input_section, rel->r_offset); | |
dc1bc0c9 RH |
9060 | } |
9061 | else | |
9062 | { | |
25f53a85 | 9063 | info->callbacks->einfo |
695344c0 | 9064 | /* xgettext:c-format */ |
174d0a74 | 9065 | (_("%H: %s reloc against `%s': error %d\n"), |
25f53a85 AM |
9066 | input_bfd, input_section, rel->r_offset, |
9067 | howto->name, sym_name, (int) r); | |
7619e7c7 | 9068 | ret = FALSE; |
252b5132 RH |
9069 | } |
9070 | } | |
c316a17c AM |
9071 | copy_reloc: |
9072 | if (wrel != rel) | |
9073 | *wrel = *rel; | |
9074 | } | |
9075 | ||
9076 | if (wrel != rel) | |
9077 | { | |
9078 | Elf_Internal_Shdr *rel_hdr; | |
9079 | size_t deleted = rel - wrel; | |
9080 | ||
9081 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
9082 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9083 | if (rel_hdr->sh_size == 0) | |
9084 | { | |
9085 | /* It is too late to remove an empty reloc section. Leave | |
9086 | one NONE reloc. | |
9087 | ??? What is wrong with an empty section??? */ | |
9088 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
9089 | deleted -= 1; | |
9090 | wrel++; | |
9091 | } | |
9092 | relend = wrel; | |
9093 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
9094 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
9095 | input_section->reloc_count -= deleted; | |
252b5132 RH |
9096 | } |
9097 | ||
252b5132 RH |
9098 | #ifdef DEBUG |
9099 | fprintf (stderr, "\n"); | |
9100 | #endif | |
9101 | ||
53291d1f AM |
9102 | if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
9103 | && input_section->size != input_section->rawsize | |
9104 | && (strcmp (input_section->output_section->name, ".init") == 0 | |
9105 | || strcmp (input_section->output_section->name, ".fini") == 0)) | |
9106 | { | |
9107 | /* Branch around the trampolines. */ | |
9108 | unsigned int insn = B + input_section->size - input_section->rawsize; | |
9109 | bfd_put_32 (input_bfd, insn, contents + input_section->rawsize); | |
9110 | } | |
9111 | ||
5446cbdf | 9112 | if (htab->params->ppc476_workaround |
795bc6b3 | 9113 | && input_section->sec_info_type == SEC_INFO_TYPE_TARGET |
0e1862bb | 9114 | && (!bfd_link_relocatable (info) |
795bc6b3 AM |
9115 | || (input_section->output_section->alignment_power |
9116 | >= htab->params->pagesize_p2))) | |
5446cbdf | 9117 | { |
5446cbdf | 9118 | bfd_vma start_addr, end_addr, addr; |
795bc6b3 | 9119 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; |
5446cbdf | 9120 | |
5446cbdf | 9121 | if (relax_info->workaround_size != 0) |
40fd06d1 AM |
9122 | { |
9123 | bfd_byte *p; | |
9124 | unsigned int n; | |
9125 | bfd_byte fill[4]; | |
9126 | ||
9127 | bfd_put_32 (input_bfd, BA, fill); | |
9128 | p = contents + input_section->size - relax_info->workaround_size; | |
9129 | n = relax_info->workaround_size >> 2; | |
9130 | while (n--) | |
9131 | { | |
9132 | memcpy (p, fill, 4); | |
9133 | p += 4; | |
9134 | } | |
9135 | } | |
5446cbdf AM |
9136 | |
9137 | /* The idea is: Replace the last instruction on a page with a | |
9138 | branch to a patch area. Put the insn there followed by a | |
9139 | branch back to the next page. Complicated a little by | |
9140 | needing to handle moved conditional branches, and by not | |
9141 | wanting to touch data-in-text. */ | |
9142 | ||
9143 | start_addr = (input_section->output_section->vma | |
9144 | + input_section->output_offset); | |
9145 | end_addr = (start_addr + input_section->size | |
9146 | - relax_info->workaround_size); | |
9147 | for (addr = ((start_addr & -pagesize) + pagesize - 4); | |
9148 | addr < end_addr; | |
9149 | addr += pagesize) | |
9150 | { | |
9151 | bfd_vma offset = addr - start_addr; | |
9152 | Elf_Internal_Rela *lo, *hi; | |
9153 | bfd_boolean is_data; | |
9154 | bfd_vma patch_off, patch_addr; | |
9155 | unsigned int insn; | |
9156 | ||
9157 | /* Do we have a data reloc at this offset? If so, leave | |
9158 | the word alone. */ | |
9159 | is_data = FALSE; | |
9160 | lo = relocs; | |
668e22e5 AM |
9161 | hi = relend; |
9162 | rel = NULL; | |
5446cbdf AM |
9163 | while (lo < hi) |
9164 | { | |
9165 | rel = lo + (hi - lo) / 2; | |
9166 | if (rel->r_offset < offset) | |
9167 | lo = rel + 1; | |
668e22e5 | 9168 | else if (rel->r_offset > offset + 3) |
5446cbdf AM |
9169 | hi = rel; |
9170 | else | |
9171 | { | |
9172 | switch (ELF32_R_TYPE (rel->r_info)) | |
9173 | { | |
9174 | case R_PPC_ADDR32: | |
9175 | case R_PPC_UADDR32: | |
9176 | case R_PPC_REL32: | |
9177 | case R_PPC_ADDR30: | |
9178 | is_data = TRUE; | |
9179 | break; | |
9180 | default: | |
9181 | break; | |
9182 | } | |
9183 | break; | |
9184 | } | |
9185 | } | |
9186 | if (is_data) | |
9187 | continue; | |
9188 | ||
b4ab4364 AM |
9189 | /* Some instructions can be left alone too. Unconditional |
9190 | branches, except for bcctr with BO=0x14 (bctr, bctrl), | |
9191 | avoid the icache failure. | |
9192 | ||
9193 | The problem occurs due to prefetch across a page boundary | |
9194 | where stale instructions can be fetched from the next | |
9195 | page, and the mechanism for flushing these bad | |
9196 | instructions fails under certain circumstances. The | |
9197 | unconditional branches: | |
9198 | 1) Branch: b, bl, ba, bla, | |
9199 | 2) Branch Conditional: bc, bca, bcl, bcla, | |
9200 | 3) Branch Conditional to Link Register: bclr, bclrl, | |
9201 | where (2) and (3) have BO=0x14 making them unconditional, | |
9202 | prevent the bad prefetch because the prefetch itself is | |
9203 | affected by these instructions. This happens even if the | |
9204 | instruction is not executed. | |
9205 | ||
9206 | A bctr example: | |
9207 | . | |
9208 | . lis 9,new_page@ha | |
9209 | . addi 9,9,new_page@l | |
9210 | . mtctr 9 | |
9211 | . bctr | |
9212 | . nop | |
9213 | . nop | |
9214 | . new_page: | |
9215 | . | |
9216 | The bctr is not predicted taken due to ctr not being | |
9217 | ready, so prefetch continues on past the bctr into the | |
9218 | new page which might have stale instructions. If they | |
9219 | fail to be flushed, then they will be executed after the | |
9220 | bctr executes. Either of the following modifications | |
9221 | prevent the bad prefetch from happening in the first | |
9222 | place: | |
9223 | . | |
1b786873 L |
9224 | . lis 9,new_page@ha lis 9,new_page@ha |
9225 | . addi 9,9,new_page@l addi 9,9,new_page@l | |
9226 | . mtctr 9 mtctr 9 | |
9227 | . bctr bctr | |
b4ab4364 | 9228 | . nop b somewhere_else |
1b786873 L |
9229 | . b somewhere_else nop |
9230 | . new_page: new_page: | |
b4ab4364 | 9231 | . */ |
5446cbdf | 9232 | insn = bfd_get_32 (input_bfd, contents + offset); |
2365f8d7 AM |
9233 | if ((insn & (0x3fu << 26)) == (18u << 26) /* b,bl,ba,bla */ |
9234 | || ((insn & (0x3fu << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/ | |
07d6d2b8 | 9235 | && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */ |
2365f8d7 | 9236 | || ((insn & (0x3fu << 26)) == (19u << 26) |
b4ab4364 | 9237 | && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */ |
07d6d2b8 | 9238 | && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */ |
5446cbdf AM |
9239 | continue; |
9240 | ||
9241 | patch_addr = (start_addr + input_section->size | |
9242 | - relax_info->workaround_size); | |
9243 | patch_addr = (patch_addr + 15) & -16; | |
9244 | patch_off = patch_addr - start_addr; | |
9245 | bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset); | |
668e22e5 AM |
9246 | |
9247 | if (rel != NULL | |
9248 | && rel->r_offset >= offset | |
9249 | && rel->r_offset < offset + 4) | |
9250 | { | |
f8b44781 AM |
9251 | asection *sreloc; |
9252 | ||
668e22e5 AM |
9253 | /* If the insn we are patching had a reloc, adjust the |
9254 | reloc r_offset so that the reloc applies to the moved | |
9255 | location. This matters for -r and --emit-relocs. */ | |
9256 | if (rel + 1 != relend) | |
9257 | { | |
9258 | Elf_Internal_Rela tmp = *rel; | |
9259 | ||
9260 | /* Keep the relocs sorted by r_offset. */ | |
9261 | memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel)); | |
9262 | relend[-1] = tmp; | |
9263 | } | |
9264 | relend[-1].r_offset += patch_off - offset; | |
f8b44781 AM |
9265 | |
9266 | /* Adjust REL16 addends too. */ | |
9267 | switch (ELF32_R_TYPE (relend[-1].r_info)) | |
9268 | { | |
9269 | case R_PPC_REL16: | |
9270 | case R_PPC_REL16_LO: | |
9271 | case R_PPC_REL16_HI: | |
9272 | case R_PPC_REL16_HA: | |
9273 | relend[-1].r_addend += patch_off - offset; | |
9274 | break; | |
9275 | default: | |
9276 | break; | |
9277 | } | |
9278 | ||
9279 | /* If we are building a PIE or shared library with | |
9280 | non-PIC objects, perhaps we had a dynamic reloc too? | |
9281 | If so, the dynamic reloc must move with the insn. */ | |
9282 | sreloc = elf_section_data (input_section)->sreloc; | |
9283 | if (sreloc != NULL) | |
9284 | { | |
1d5c94cb | 9285 | Elf32_External_Rela *slo, *shi, *srelend; |
f8b44781 AM |
9286 | bfd_vma soffset; |
9287 | ||
1d5c94cb AM |
9288 | slo = (Elf32_External_Rela *) sreloc->contents; |
9289 | shi = srelend = slo + sreloc->reloc_count; | |
f8b44781 AM |
9290 | soffset = (offset + input_section->output_section->vma |
9291 | + input_section->output_offset); | |
9292 | while (slo < shi) | |
9293 | { | |
1d5c94cb AM |
9294 | Elf32_External_Rela *srel = slo + (shi - slo) / 2; |
9295 | bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel, | |
9296 | &outrel); | |
f8b44781 AM |
9297 | if (outrel.r_offset < soffset) |
9298 | slo = srel + 1; | |
9299 | else if (outrel.r_offset > soffset + 3) | |
9300 | shi = srel; | |
9301 | else | |
9302 | { | |
1d5c94cb | 9303 | if (srel + 1 != srelend) |
f8b44781 | 9304 | { |
1d5c94cb AM |
9305 | memmove (srel, srel + 1, |
9306 | (srelend - (srel + 1)) * sizeof (*srel)); | |
9307 | srel = srelend - 1; | |
f8b44781 AM |
9308 | } |
9309 | outrel.r_offset += patch_off - offset; | |
1d5c94cb AM |
9310 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
9311 | (bfd_byte *) srel); | |
f8b44781 AM |
9312 | break; |
9313 | } | |
9314 | } | |
9315 | } | |
668e22e5 AM |
9316 | } |
9317 | else | |
9318 | rel = NULL; | |
9319 | ||
2365f8d7 | 9320 | if ((insn & (0x3fu << 26)) == (16u << 26) /* bc */ |
5446cbdf AM |
9321 | && (insn & 2) == 0 /* relative */) |
9322 | { | |
9323 | bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000; | |
9324 | ||
9325 | delta += offset - patch_off; | |
0e1862bb | 9326 | if (bfd_link_relocatable (info) && rel != NULL) |
668e22e5 | 9327 | delta = 0; |
0e1862bb | 9328 | if (!bfd_link_relocatable (info) && rel != NULL) |
668e22e5 AM |
9329 | { |
9330 | enum elf_ppc_reloc_type r_type; | |
9331 | ||
9332 | r_type = ELF32_R_TYPE (relend[-1].r_info); | |
9333 | if (r_type == R_PPC_REL14_BRTAKEN) | |
9334 | insn |= BRANCH_PREDICT_BIT; | |
9335 | else if (r_type == R_PPC_REL14_BRNTAKEN) | |
9336 | insn &= ~BRANCH_PREDICT_BIT; | |
9337 | else | |
9338 | BFD_ASSERT (r_type == R_PPC_REL14); | |
9339 | ||
9340 | if ((r_type == R_PPC_REL14_BRTAKEN | |
9341 | || r_type == R_PPC_REL14_BRNTAKEN) | |
9342 | && delta + 0x8000 < 0x10000 | |
9343 | && (bfd_signed_vma) delta < 0) | |
9344 | insn ^= BRANCH_PREDICT_BIT; | |
9345 | } | |
5446cbdf AM |
9346 | if (delta + 0x8000 < 0x10000) |
9347 | { | |
9348 | bfd_put_32 (input_bfd, | |
9349 | (insn & ~0xfffc) | (delta & 0xfffc), | |
9350 | contents + patch_off); | |
9351 | patch_off += 4; | |
9352 | bfd_put_32 (input_bfd, | |
9353 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9354 | contents + patch_off); | |
9355 | patch_off += 4; | |
9356 | } | |
9357 | else | |
9358 | { | |
668e22e5 AM |
9359 | if (rel != NULL) |
9360 | { | |
9361 | unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info); | |
9362 | ||
9363 | relend[-1].r_offset += 8; | |
9364 | relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24); | |
9365 | } | |
5446cbdf AM |
9366 | bfd_put_32 (input_bfd, |
9367 | (insn & ~0xfffc) | 8, | |
9368 | contents + patch_off); | |
9369 | patch_off += 4; | |
9370 | bfd_put_32 (input_bfd, | |
9371 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9372 | contents + patch_off); | |
9373 | patch_off += 4; | |
9374 | bfd_put_32 (input_bfd, | |
9375 | B | ((delta - 8) & 0x3fffffc), | |
9376 | contents + patch_off); | |
9377 | patch_off += 4; | |
9378 | } | |
9379 | } | |
9380 | else | |
9381 | { | |
9382 | bfd_put_32 (input_bfd, insn, contents + patch_off); | |
9383 | patch_off += 4; | |
9384 | bfd_put_32 (input_bfd, | |
9385 | B | ((offset + 4 - patch_off) & 0x3fffffc), | |
9386 | contents + patch_off); | |
9387 | patch_off += 4; | |
9388 | } | |
9389 | BFD_ASSERT (patch_off <= input_section->size); | |
9390 | relax_info->workaround_size = input_section->size - patch_off; | |
9391 | } | |
9392 | } | |
9393 | ||
252b5132 RH |
9394 | return ret; |
9395 | } | |
252b5132 | 9396 | \f |
49c09209 | 9397 | /* Write out the PLT relocs and entries for H. */ |
c5fccbec | 9398 | |
b34976b6 | 9399 | static bfd_boolean |
49c09209 | 9400 | write_global_sym_plt (struct elf_link_hash_entry *h, void *inf) |
e1a9cb8e | 9401 | { |
49c09209 AM |
9402 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
9403 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
a6aa5195 AM |
9404 | struct plt_entry *ent; |
9405 | bfd_boolean doneone; | |
e1a9cb8e | 9406 | |
a6aa5195 AM |
9407 | doneone = FALSE; |
9408 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9409 | if (ent->plt.offset != (bfd_vma) -1) | |
9410 | { | |
9411 | if (!doneone) | |
9412 | { | |
9413 | Elf_Internal_Rela rela; | |
9414 | bfd_byte *loc; | |
9415 | bfd_vma reloc_index; | |
2d7ad24e AM |
9416 | asection *plt = htab->elf.splt; |
9417 | asection *relplt = htab->elf.srelplt; | |
e1a9cb8e | 9418 | |
e054468f | 9419 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9420 | || !htab->elf.dynamic_sections_created |
9421 | || h->dynindx == -1) | |
9d8504b1 PB |
9422 | reloc_index = ent->plt.offset / 4; |
9423 | else | |
9424 | { | |
9425 | reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size) | |
9426 | / htab->plt_slot_size); | |
9427 | if (reloc_index > PLT_NUM_SINGLE_ENTRIES | |
4a3dc543 | 9428 | && htab->plt_type == PLT_OLD) |
9d8504b1 PB |
9429 | reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; |
9430 | } | |
9431 | ||
a6aa5195 AM |
9432 | /* This symbol has an entry in the procedure linkage table. |
9433 | Set it up. */ | |
e054468f | 9434 | if (htab->plt_type == PLT_VXWORKS |
25f23106 AM |
9435 | && htab->elf.dynamic_sections_created |
9436 | && h->dynindx != -1) | |
a6aa5195 | 9437 | { |
9d8504b1 PB |
9438 | bfd_vma got_offset; |
9439 | const bfd_vma *plt_entry; | |
5b914448 | 9440 | |
9d8504b1 PB |
9441 | /* The first three entries in .got.plt are reserved. */ |
9442 | got_offset = (reloc_index + 3) * 4; | |
9443 | ||
9444 | /* Use the right PLT. */ | |
0e1862bb | 9445 | plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry |
9d8504b1 PB |
9446 | : ppc_elf_vxworks_plt_entry; |
9447 | ||
9448 | /* Fill in the .plt on VxWorks. */ | |
0e1862bb | 9449 | if (bfd_link_pic (info)) |
9d8504b1 | 9450 | { |
49c09209 | 9451 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9452 | plt_entry[0] | PPC_HA (got_offset), |
2d7ad24e | 9453 | plt->contents + ent->plt.offset + 0); |
49c09209 | 9454 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9455 | plt_entry[1] | PPC_LO (got_offset), |
2d7ad24e | 9456 | plt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
9457 | } |
9458 | else | |
9459 | { | |
e87d4038 | 9460 | bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot); |
9d8504b1 | 9461 | |
49c09209 | 9462 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9463 | plt_entry[0] | PPC_HA (got_loc), |
2d7ad24e | 9464 | plt->contents + ent->plt.offset + 0); |
49c09209 | 9465 | bfd_put_32 (info->output_bfd, |
e87d4038 | 9466 | plt_entry[1] | PPC_LO (got_loc), |
2d7ad24e | 9467 | plt->contents + ent->plt.offset + 4); |
9d8504b1 PB |
9468 | } |
9469 | ||
49c09209 | 9470 | bfd_put_32 (info->output_bfd, plt_entry[2], |
2d7ad24e | 9471 | plt->contents + ent->plt.offset + 8); |
49c09209 | 9472 | bfd_put_32 (info->output_bfd, plt_entry[3], |
2d7ad24e | 9473 | plt->contents + ent->plt.offset + 12); |
9d8504b1 PB |
9474 | |
9475 | /* This instruction is an immediate load. The value loaded is | |
9476 | the byte offset of the R_PPC_JMP_SLOT relocation from the | |
9477 | start of the .rela.plt section. The value is stored in the | |
9478 | low-order 16 bits of the load instruction. */ | |
9479 | /* NOTE: It appears that this is now an index rather than a | |
9480 | prescaled offset. */ | |
49c09209 | 9481 | bfd_put_32 (info->output_bfd, |
9d8504b1 | 9482 | plt_entry[4] | reloc_index, |
2d7ad24e | 9483 | plt->contents + ent->plt.offset + 16); |
9d8504b1 PB |
9484 | /* This instruction is a PC-relative branch whose target is |
9485 | the start of the PLT section. The address of this branch | |
9486 | instruction is 20 bytes beyond the start of this PLT entry. | |
9487 | The address is encoded in bits 6-29, inclusive. The value | |
9488 | stored is right-shifted by two bits, permitting a 26-bit | |
9489 | offset. */ | |
49c09209 | 9490 | bfd_put_32 (info->output_bfd, |
5b914448 | 9491 | (plt_entry[5] |
9d8504b1 | 9492 | | (-(ent->plt.offset + 20) & 0x03fffffc)), |
2d7ad24e | 9493 | plt->contents + ent->plt.offset + 20); |
49c09209 | 9494 | bfd_put_32 (info->output_bfd, plt_entry[6], |
2d7ad24e | 9495 | plt->contents + ent->plt.offset + 24); |
49c09209 | 9496 | bfd_put_32 (info->output_bfd, plt_entry[7], |
2d7ad24e | 9497 | plt->contents + ent->plt.offset + 28); |
9d8504b1 PB |
9498 | |
9499 | /* Fill in the GOT entry corresponding to this PLT slot with | |
a8685210 | 9500 | the address immediately after the "bctr" instruction |
9d8504b1 | 9501 | in this PLT entry. */ |
2d7ad24e AM |
9502 | bfd_put_32 (info->output_bfd, (plt->output_section->vma |
9503 | + plt->output_offset | |
9504 | + ent->plt.offset + 16), | |
ce558b89 | 9505 | htab->elf.sgotplt->contents + got_offset); |
9d8504b1 | 9506 | |
0e1862bb | 9507 | if (!bfd_link_pic (info)) |
9d8504b1 PB |
9508 | { |
9509 | /* Fill in a couple of entries in .rela.plt.unloaded. */ | |
9510 | loc = htab->srelplt2->contents | |
9511 | + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index | |
9512 | * VXWORKS_PLT_NON_JMP_SLOT_RELOCS) | |
9513 | * sizeof (Elf32_External_Rela)); | |
9514 | ||
9515 | /* Provide the @ha relocation for the first instruction. */ | |
2d7ad24e AM |
9516 | rela.r_offset = (plt->output_section->vma |
9517 | + plt->output_offset | |
9d8504b1 | 9518 | + ent->plt.offset + 2); |
636ce3f5 | 9519 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9520 | R_PPC_ADDR16_HA); |
9521 | rela.r_addend = got_offset; | |
49c09209 | 9522 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
9523 | loc += sizeof (Elf32_External_Rela); |
9524 | ||
9525 | /* Provide the @l relocation for the second instruction. */ | |
2d7ad24e AM |
9526 | rela.r_offset = (plt->output_section->vma |
9527 | + plt->output_offset | |
9d8504b1 | 9528 | + ent->plt.offset + 6); |
636ce3f5 | 9529 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
9d8504b1 PB |
9530 | R_PPC_ADDR16_LO); |
9531 | rela.r_addend = got_offset; | |
49c09209 | 9532 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
9533 | loc += sizeof (Elf32_External_Rela); |
9534 | ||
9535 | /* Provide a relocation for the GOT entry corresponding to this | |
9536 | PLT slot. Point it at the middle of the .plt entry. */ | |
ce558b89 AM |
9537 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
9538 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 9539 | + got_offset); |
7325306f | 9540 | rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, |
9d8504b1 PB |
9541 | R_PPC_ADDR32); |
9542 | rela.r_addend = ent->plt.offset + 16; | |
49c09209 | 9543 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); |
9d8504b1 PB |
9544 | } |
9545 | ||
9546 | /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT. | |
9547 | In particular, the offset for the relocation is not the | |
9548 | address of the PLT entry for this function, as specified | |
9549 | by the ABI. Instead, the offset is set to the address of | |
9550 | the GOT slot for this function. See EABI 4.4.4.1. */ | |
ce558b89 AM |
9551 | rela.r_offset = (htab->elf.sgotplt->output_section->vma |
9552 | + htab->elf.sgotplt->output_offset | |
9d8504b1 | 9553 | + got_offset); |
2d7ad24e | 9554 | rela.r_addend = 0; |
a6aa5195 AM |
9555 | } |
9556 | else | |
9557 | { | |
2d7ad24e | 9558 | rela.r_addend = 0; |
25f23106 AM |
9559 | if (!htab->elf.dynamic_sections_created |
9560 | || h->dynindx == -1) | |
2d7ad24e AM |
9561 | { |
9562 | if (h->type == STT_GNU_IFUNC) | |
9563 | { | |
9564 | plt = htab->elf.iplt; | |
9565 | relplt = htab->elf.irelplt; | |
9566 | } | |
9567 | else | |
9568 | { | |
9569 | plt = htab->pltlocal; | |
9570 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9571 | } | |
9572 | if (h->def_regular | |
9573 | && (h->root.type == bfd_link_hash_defined | |
9574 | || h->root.type == bfd_link_hash_defweak)) | |
9575 | rela.r_addend = SYM_VAL (h); | |
9576 | } | |
e054468f | 9577 | |
2d7ad24e | 9578 | if (relplt == NULL) |
9d8504b1 | 9579 | { |
2d7ad24e AM |
9580 | loc = plt->contents + ent->plt.offset; |
9581 | bfd_put_32 (info->output_bfd, rela.r_addend, loc); | |
9d8504b1 PB |
9582 | } |
9583 | else | |
9584 | { | |
2d7ad24e AM |
9585 | rela.r_offset = (plt->output_section->vma |
9586 | + plt->output_offset | |
9587 | + ent->plt.offset); | |
9588 | ||
9589 | if (htab->plt_type == PLT_OLD | |
9590 | || !htab->elf.dynamic_sections_created | |
9591 | || h->dynindx == -1) | |
9592 | { | |
9593 | /* We don't need to fill in the .plt. The ppc dynamic | |
9594 | linker will fill it in. */ | |
9595 | } | |
9596 | else | |
9597 | { | |
9598 | bfd_vma val = (htab->glink_pltresolve + ent->plt.offset | |
9599 | + htab->glink->output_section->vma | |
9600 | + htab->glink->output_offset); | |
9601 | bfd_put_32 (info->output_bfd, val, | |
9602 | plt->contents + ent->plt.offset); | |
9603 | } | |
9d8504b1 | 9604 | } |
a6aa5195 | 9605 | } |
e1a9cb8e | 9606 | |
2d7ad24e | 9607 | if (relplt != NULL) |
e054468f | 9608 | { |
2d7ad24e AM |
9609 | /* Fill in the entry in the .rela.plt section. */ |
9610 | if (!htab->elf.dynamic_sections_created | |
9611 | || h->dynindx == -1) | |
9612 | { | |
9613 | if (h->type == STT_GNU_IFUNC) | |
9614 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9615 | else | |
9616 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
9617 | loc = relplt->contents + (relplt->reloc_count++ | |
9618 | * sizeof (Elf32_External_Rela)); | |
9619 | htab->local_ifunc_resolver = 1; | |
9620 | } | |
9621 | else | |
9622 | { | |
9623 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); | |
9624 | loc = relplt->contents + (reloc_index | |
9625 | * sizeof (Elf32_External_Rela)); | |
9626 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
9627 | htab->maybe_local_ifunc_resolver = 1; | |
9628 | } | |
9629 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); | |
82e66161 | 9630 | } |
a6aa5195 AM |
9631 | doneone = TRUE; |
9632 | } | |
e1a9cb8e | 9633 | |
e054468f | 9634 | if (htab->plt_type == PLT_NEW |
25f23106 AM |
9635 | || !htab->elf.dynamic_sections_created |
9636 | || h->dynindx == -1) | |
a6aa5195 | 9637 | { |
a7f2871e | 9638 | unsigned char *p; |
49c09209 | 9639 | asection *plt = htab->elf.splt; |
9e390558 | 9640 | |
25f23106 AM |
9641 | if (!htab->elf.dynamic_sections_created |
9642 | || h->dynindx == -1) | |
2d7ad24e AM |
9643 | { |
9644 | if (h->type == STT_GNU_IFUNC) | |
9645 | plt = htab->elf.iplt; | |
9646 | else | |
9647 | break; | |
9648 | } | |
e1a9cb8e | 9649 | |
a7f2871e | 9650 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
49c09209 | 9651 | write_glink_stub (h, ent, plt, p, info); |
e1a9cb8e | 9652 | |
0e1862bb | 9653 | if (!bfd_link_pic (info)) |
e054468f AM |
9654 | /* We only need one non-PIC glink stub. */ |
9655 | break; | |
a6aa5195 AM |
9656 | } |
9657 | else | |
9658 | break; | |
9659 | } | |
49c09209 AM |
9660 | return TRUE; |
9661 | } | |
9662 | ||
9663 | /* Finish up PLT handling. */ | |
9664 | ||
9665 | bfd_boolean | |
9666 | ppc_finish_symbols (struct bfd_link_info *info) | |
9667 | { | |
9668 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
9669 | bfd *ibfd; | |
9670 | ||
9671 | if (!htab) | |
9672 | return TRUE; | |
9673 | ||
9674 | elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info); | |
9675 | ||
9676 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
9677 | { | |
9678 | bfd_vma *local_got, *end_local_got; | |
9679 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
9680 | Elf_Internal_Shdr *symtab_hdr; | |
9681 | bfd_size_type locsymcount; | |
9682 | Elf_Internal_Sym *local_syms = NULL; | |
9683 | struct plt_entry *ent; | |
9684 | ||
9685 | if (!is_ppc_elf (ibfd)) | |
9686 | continue; | |
9687 | ||
9688 | local_got = elf_local_got_offsets (ibfd); | |
9689 | if (!local_got) | |
9690 | continue; | |
9691 | ||
9692 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9693 | locsymcount = symtab_hdr->sh_info; | |
9694 | end_local_got = local_got + locsymcount; | |
9695 | local_plt = (struct plt_entry **) end_local_got; | |
9696 | end_local_plt = local_plt + locsymcount; | |
9697 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
9698 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
9699 | { | |
9700 | if (ent->plt.offset != (bfd_vma) -1) | |
9701 | { | |
9702 | Elf_Internal_Sym *sym; | |
9703 | asection *sym_sec; | |
9704 | asection *plt, *relplt; | |
9705 | bfd_byte *loc; | |
9706 | bfd_vma val; | |
9707 | Elf_Internal_Rela rela; | |
8cd1fe1b | 9708 | unsigned char *p; |
49c09209 AM |
9709 | |
9710 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
9711 | lplt - local_plt, ibfd)) | |
9712 | { | |
9713 | if (local_syms != NULL | |
9714 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9715 | free (local_syms); | |
9716 | return FALSE; | |
9717 | } | |
9718 | ||
9719 | val = sym->st_value; | |
9720 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
9721 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
9722 | ||
2d7ad24e AM |
9723 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
9724 | { | |
9725 | htab->local_ifunc_resolver = 1; | |
9726 | plt = htab->elf.iplt; | |
9727 | relplt = htab->elf.irelplt; | |
9728 | rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE); | |
9729 | } | |
9730 | else | |
9731 | { | |
9732 | plt = htab->pltlocal; | |
9733 | if (bfd_link_pic (info)) | |
9734 | { | |
9735 | relplt = htab->relpltlocal; | |
9736 | rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); | |
9737 | } | |
9738 | else | |
9739 | { | |
9740 | loc = plt->contents + ent->plt.offset; | |
9741 | bfd_put_32 (info->output_bfd, val, loc); | |
9742 | continue; | |
9743 | } | |
9744 | } | |
49c09209 AM |
9745 | |
9746 | rela.r_offset = (ent->plt.offset | |
9747 | + plt->output_offset | |
9748 | + plt->output_section->vma); | |
49c09209 AM |
9749 | rela.r_addend = val; |
9750 | loc = relplt->contents + (relplt->reloc_count++ | |
9751 | * sizeof (Elf32_External_Rela)); | |
9752 | bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc); | |
49c09209 | 9753 | |
8cd1fe1b | 9754 | p = (unsigned char *) htab->glink->contents + ent->glink_offset; |
49c09209 | 9755 | write_glink_stub (NULL, ent, htab->elf.iplt, p, info); |
49c09209 AM |
9756 | } |
9757 | } | |
9758 | ||
9759 | if (local_syms != NULL | |
9760 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9761 | { | |
9762 | if (!info->keep_memory) | |
9763 | free (local_syms); | |
9764 | else | |
9765 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9766 | } | |
9767 | } | |
9768 | return TRUE; | |
9769 | } | |
9770 | ||
9771 | /* Finish up dynamic symbol handling. We set the contents of various | |
9772 | dynamic sections here. */ | |
9773 | ||
9774 | static bfd_boolean | |
9775 | ppc_elf_finish_dynamic_symbol (bfd *output_bfd, | |
9776 | struct bfd_link_info *info, | |
9777 | struct elf_link_hash_entry *h, | |
9778 | Elf_Internal_Sym *sym) | |
9779 | { | |
9780 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); | |
9781 | struct plt_entry *ent; | |
9782 | ||
9783 | #ifdef DEBUG | |
9784 | fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", | |
9785 | h->root.root.string); | |
9786 | #endif | |
9787 | ||
9788 | if (!h->def_regular | |
9789 | || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info))) | |
9790 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
9791 | if (ent->plt.offset != (bfd_vma) -1) | |
9792 | { | |
9793 | if (!h->def_regular) | |
9794 | { | |
9795 | /* Mark the symbol as undefined, rather than as | |
9796 | defined in the .plt section. Leave the value if | |
9797 | there were any relocations where pointer equality | |
9798 | matters (this is a clue for the dynamic linker, to | |
9799 | make function pointer comparisons work between an | |
9800 | application and shared library), otherwise set it | |
9801 | to zero. */ | |
9802 | sym->st_shndx = SHN_UNDEF; | |
9803 | if (!h->pointer_equality_needed) | |
9804 | sym->st_value = 0; | |
9805 | else if (!h->ref_regular_nonweak) | |
9806 | { | |
9807 | /* This breaks function pointer comparisons, but | |
9808 | that is better than breaking tests for a NULL | |
9809 | function pointer. */ | |
9810 | sym->st_value = 0; | |
9811 | } | |
9812 | } | |
9813 | else | |
9814 | { | |
9815 | /* Set the value of ifunc symbols in a non-pie | |
9816 | executable to the glink entry. This is to avoid | |
9817 | text relocations. We can't do this for ifunc in | |
9818 | allocate_dynrelocs, as we do for normal dynamic | |
9819 | function symbols with plt entries, because we need | |
9820 | to keep the original value around for the ifunc | |
9821 | relocation. */ | |
9822 | sym->st_shndx | |
9823 | = (_bfd_elf_section_from_bfd_section | |
9824 | (info->output_bfd, htab->glink->output_section)); | |
9825 | sym->st_value = (ent->glink_offset | |
9826 | + htab->glink->output_offset | |
9827 | + htab->glink->output_section->vma); | |
9828 | } | |
9829 | break; | |
9830 | } | |
e1a9cb8e | 9831 | |
25dbc73a AM |
9832 | if (h->needs_copy) |
9833 | { | |
9834 | asection *s; | |
9835 | Elf_Internal_Rela rela; | |
9836 | bfd_byte *loc; | |
e1a9cb8e | 9837 | |
25dbc73a | 9838 | /* This symbols needs a copy reloc. Set it up. */ |
e1a9cb8e | 9839 | |
25dbc73a AM |
9840 | #ifdef DEBUG |
9841 | fprintf (stderr, ", copy"); | |
9842 | #endif | |
e1a9cb8e | 9843 | |
25dbc73a | 9844 | BFD_ASSERT (h->dynindx != -1); |
86bbe32f | 9845 | |
4dc4a9a5 | 9846 | if (ppc_elf_hash_entry (h)->has_sda_refs) |
25dbc73a | 9847 | s = htab->relsbss; |
afbf7e8e | 9848 | else if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f | 9849 | s = htab->elf.sreldynrelro; |
25dbc73a | 9850 | else |
9d19e4fd | 9851 | s = htab->elf.srelbss; |
25dbc73a | 9852 | BFD_ASSERT (s != NULL); |
e1a9cb8e | 9853 | |
e87d4038 | 9854 | rela.r_offset = SYM_VAL (h); |
25dbc73a AM |
9855 | rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); |
9856 | rela.r_addend = 0; | |
9857 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); | |
9858 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
9859 | } | |
e1a9cb8e | 9860 | |
25dbc73a AM |
9861 | #ifdef DEBUG |
9862 | fprintf (stderr, "\n"); | |
9863 | #endif | |
e1a9cb8e | 9864 | |
25dbc73a AM |
9865 | return TRUE; |
9866 | } | |
9867 | \f | |
9868 | static enum elf_reloc_type_class | |
7e612e98 AM |
9869 | ppc_elf_reloc_type_class (const struct bfd_link_info *info, |
9870 | const asection *rel_sec, | |
9871 | const Elf_Internal_Rela *rela) | |
e1a9cb8e | 9872 | { |
7e612e98 AM |
9873 | struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); |
9874 | ||
ce558b89 | 9875 | if (rel_sec == htab->elf.irelplt) |
7e612e98 AM |
9876 | return reloc_class_ifunc; |
9877 | ||
25dbc73a AM |
9878 | switch (ELF32_R_TYPE (rela->r_info)) |
9879 | { | |
9880 | case R_PPC_RELATIVE: | |
9881 | return reloc_class_relative; | |
25dbc73a AM |
9882 | case R_PPC_JMP_SLOT: |
9883 | return reloc_class_plt; | |
9884 | case R_PPC_COPY: | |
9885 | return reloc_class_copy; | |
9886 | default: | |
9887 | return reloc_class_normal; | |
9888 | } | |
e1a9cb8e | 9889 | } |
25dbc73a AM |
9890 | \f |
9891 | /* Finish up the dynamic sections. */ | |
e1a9cb8e | 9892 | |
25dbc73a AM |
9893 | static bfd_boolean |
9894 | ppc_elf_finish_dynamic_sections (bfd *output_bfd, | |
9895 | struct bfd_link_info *info) | |
e1a9cb8e | 9896 | { |
25dbc73a AM |
9897 | asection *sdyn; |
9898 | struct ppc_elf_link_hash_table *htab; | |
1fe44d79 | 9899 | bfd_vma got; |
e87d4038 AM |
9900 | bfd *dynobj; |
9901 | bfd_boolean ret = TRUE; | |
e1a9cb8e | 9902 | |
25dbc73a AM |
9903 | #ifdef DEBUG |
9904 | fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); | |
9905 | #endif | |
6b0817e5 | 9906 | |
25dbc73a | 9907 | htab = ppc_elf_hash_table (info); |
ce558b89 | 9908 | dynobj = htab->elf.dynobj; |
3d4d4302 | 9909 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
e1a9cb8e | 9910 | |
1fe44d79 AM |
9911 | got = 0; |
9912 | if (htab->elf.hgot != NULL) | |
e87d4038 | 9913 | got = SYM_VAL (htab->elf.hgot); |
1fe44d79 | 9914 | |
25dbc73a | 9915 | if (htab->elf.dynamic_sections_created) |
e1a9cb8e | 9916 | { |
25dbc73a | 9917 | Elf32_External_Dyn *dyncon, *dynconend; |
e1a9cb8e | 9918 | |
ce558b89 | 9919 | BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL); |
86bbe32f | 9920 | |
25dbc73a AM |
9921 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
9922 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
9923 | for (; dyncon < dynconend; dyncon++) | |
9924 | { | |
9925 | Elf_Internal_Dyn dyn; | |
9926 | asection *s; | |
e1a9cb8e | 9927 | |
9d8504b1 | 9928 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
86bbe32f | 9929 | |
25dbc73a AM |
9930 | switch (dyn.d_tag) |
9931 | { | |
9932 | case DT_PLTGOT: | |
9d8504b1 | 9933 | if (htab->is_vxworks) |
ce558b89 | 9934 | s = htab->elf.sgotplt; |
9d8504b1 | 9935 | else |
ce558b89 | 9936 | s = htab->elf.splt; |
25dbc73a AM |
9937 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
9938 | break; | |
86bbe32f | 9939 | |
25dbc73a | 9940 | case DT_PLTRELSZ: |
ce558b89 | 9941 | dyn.d_un.d_val = htab->elf.srelplt->size; |
25dbc73a | 9942 | break; |
e1a9cb8e | 9943 | |
25dbc73a | 9944 | case DT_JMPREL: |
ce558b89 | 9945 | s = htab->elf.srelplt; |
25dbc73a AM |
9946 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
9947 | break; | |
2f89ff8d | 9948 | |
1fe44d79 AM |
9949 | case DT_PPC_GOT: |
9950 | dyn.d_un.d_ptr = got; | |
d7128ce4 AM |
9951 | break; |
9952 | ||
82e66161 AM |
9953 | case DT_TEXTREL: |
9954 | if (htab->local_ifunc_resolver) | |
9955 | info->callbacks->einfo | |
9956 | (_("%X%P: text relocations and GNU indirect " | |
9957 | "functions will result in a segfault at runtime\n")); | |
9958 | else if (htab->maybe_local_ifunc_resolver) | |
9959 | info->callbacks->einfo | |
9960 | (_("%P: warning: text relocations and GNU indirect " | |
9961 | "functions may result in a segfault at runtime\n")); | |
9962 | continue; | |
9963 | ||
25dbc73a | 9964 | default: |
7a2b07ff NS |
9965 | if (htab->is_vxworks |
9966 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
9967 | break; | |
25dbc73a AM |
9968 | continue; |
9969 | } | |
4c45e5c9 | 9970 | |
25dbc73a AM |
9971 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
9972 | } | |
9973 | } | |
4c45e5c9 | 9974 | |
6528b6eb AM |
9975 | if (htab->elf.sgot != NULL |
9976 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
25dbc73a | 9977 | { |
ce558b89 AM |
9978 | if (htab->elf.hgot->root.u.def.section == htab->elf.sgot |
9979 | || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt) | |
e87d4038 | 9980 | { |
e79f5955 | 9981 | unsigned char *p = htab->elf.hgot->root.u.def.section->contents; |
2f89ff8d | 9982 | |
e87d4038 AM |
9983 | p += htab->elf.hgot->root.u.def.value; |
9984 | if (htab->plt_type == PLT_OLD) | |
e79f5955 AM |
9985 | { |
9986 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 | |
9987 | so that a function can easily find the address of | |
9988 | _GLOBAL_OFFSET_TABLE_. */ | |
9989 | BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4 | |
9990 | < htab->elf.hgot->root.u.def.section->size); | |
9991 | bfd_put_32 (output_bfd, 0x4e800021, p - 4); | |
9992 | } | |
3b36f7e6 | 9993 | |
e87d4038 | 9994 | if (sdyn != NULL) |
e79f5955 AM |
9995 | { |
9996 | bfd_vma val = sdyn->output_section->vma + sdyn->output_offset; | |
9997 | BFD_ASSERT (htab->elf.hgot->root.u.def.value | |
9998 | < htab->elf.hgot->root.u.def.section->size); | |
9999 | bfd_put_32 (output_bfd, val, p); | |
10000 | } | |
e87d4038 AM |
10001 | } |
10002 | else | |
10003 | { | |
695344c0 | 10004 | /* xgettext:c-format */ |
cf97bcb0 AM |
10005 | _bfd_error_handler (_("%s not defined in linker created %pA"), |
10006 | htab->elf.hgot->root.root.string, | |
10007 | (htab->elf.sgotplt != NULL | |
10008 | ? htab->elf.sgotplt : htab->elf.sgot)); | |
e87d4038 AM |
10009 | bfd_set_error (bfd_error_bad_value); |
10010 | ret = FALSE; | |
10011 | } | |
25dbc73a | 10012 | |
ce558b89 | 10013 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; |
25dbc73a AM |
10014 | } |
10015 | ||
9d8504b1 | 10016 | /* Fill in the first entry in the VxWorks procedure linkage table. */ |
6528b6eb AM |
10017 | if (htab->is_vxworks |
10018 | && htab->elf.splt != NULL | |
10019 | && htab->elf.splt->size != 0 | |
10020 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
9d8504b1 | 10021 | { |
6528b6eb | 10022 | asection *splt = htab->elf.splt; |
9d8504b1 | 10023 | /* Use the right PLT. */ |
0e1862bb | 10024 | const bfd_vma *plt_entry = (bfd_link_pic (info) |
5b914448 AM |
10025 | ? ppc_elf_vxworks_pic_plt0_entry |
10026 | : ppc_elf_vxworks_plt0_entry); | |
9d8504b1 | 10027 | |
0e1862bb | 10028 | if (!bfd_link_pic (info)) |
9d8504b1 | 10029 | { |
e87d4038 | 10030 | bfd_vma got_value = SYM_VAL (htab->elf.hgot); |
9d8504b1 | 10031 | |
e87d4038 | 10032 | bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value), |
9d8504b1 | 10033 | splt->contents + 0); |
e87d4038 | 10034 | bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value), |
9d8504b1 PB |
10035 | splt->contents + 4); |
10036 | } | |
10037 | else | |
10038 | { | |
10039 | bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0); | |
10040 | bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4); | |
10041 | } | |
10042 | bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8); | |
10043 | bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12); | |
10044 | bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16); | |
10045 | bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20); | |
10046 | bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24); | |
10047 | bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28); | |
10048 | ||
0e1862bb | 10049 | if (! bfd_link_pic (info)) |
9d8504b1 PB |
10050 | { |
10051 | Elf_Internal_Rela rela; | |
10052 | bfd_byte *loc; | |
10053 | ||
10054 | loc = htab->srelplt2->contents; | |
10055 | ||
10056 | /* Output the @ha relocation for the first instruction. */ | |
ce558b89 AM |
10057 | rela.r_offset = (htab->elf.splt->output_section->vma |
10058 | + htab->elf.splt->output_offset | |
9d8504b1 | 10059 | + 2); |
636ce3f5 | 10060 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10061 | rela.r_addend = 0; |
10062 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10063 | loc += sizeof (Elf32_External_Rela); | |
5b914448 | 10064 | |
9d8504b1 | 10065 | /* Output the @l relocation for the second instruction. */ |
ce558b89 AM |
10066 | rela.r_offset = (htab->elf.splt->output_section->vma |
10067 | + htab->elf.splt->output_offset | |
9d8504b1 | 10068 | + 6); |
636ce3f5 | 10069 | rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10070 | rela.r_addend = 0; |
10071 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
10072 | loc += sizeof (Elf32_External_Rela); | |
10073 | ||
10074 | /* Fix up the remaining relocations. They may have the wrong | |
10075 | symbol index for _G_O_T_ or _P_L_T_ depending on the order | |
10076 | in which symbols were output. */ | |
10077 | while (loc < htab->srelplt2->contents + htab->srelplt2->size) | |
10078 | { | |
10079 | Elf_Internal_Rela rel; | |
10080 | ||
10081 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10082 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA); |
9d8504b1 PB |
10083 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10084 | loc += sizeof (Elf32_External_Rela); | |
10085 | ||
10086 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
636ce3f5 | 10087 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO); |
9d8504b1 PB |
10088 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10089 | loc += sizeof (Elf32_External_Rela); | |
10090 | ||
10091 | bfd_elf32_swap_reloc_in (output_bfd, loc, &rel); | |
7325306f | 10092 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32); |
9d8504b1 PB |
10093 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
10094 | loc += sizeof (Elf32_External_Rela); | |
10095 | } | |
10096 | } | |
10097 | } | |
10098 | ||
e054468f AM |
10099 | if (htab->glink != NULL |
10100 | && htab->glink->contents != NULL | |
10101 | && htab->elf.dynamic_sections_created) | |
d7128ce4 AM |
10102 | { |
10103 | unsigned char *p; | |
10104 | unsigned char *endp; | |
a6aa5195 | 10105 | bfd_vma res0; |
a6aa5195 AM |
10106 | |
10107 | /* | |
10108 | * PIC glink code is the following: | |
10109 | * | |
10110 | * # ith PLT code stub. | |
10111 | * addis 11,30,(plt+(i-1)*4-got)@ha | |
10112 | * lwz 11,(plt+(i-1)*4-got)@l(11) | |
10113 | * mtctr 11 | |
10114 | * bctr | |
10115 | * | |
10116 | * # A table of branches, one for each plt entry. | |
176a0d42 | 10117 | * # The idea is that the plt call stub loads ctr and r11 with these |
a6aa5195 AM |
10118 | * # addresses, so (r11 - res_0) gives the plt index * 4. |
10119 | * res_0: b PLTresolve | |
10120 | * res_1: b PLTresolve | |
10121 | * . | |
10122 | * # Some number of entries towards the end can be nops | |
10123 | * res_n_m3: nop | |
10124 | * res_n_m2: nop | |
10125 | * res_n_m1: | |
10126 | * | |
10127 | * PLTresolve: | |
10128 | * addis 11,11,(1f-res_0)@ha | |
10129 | * mflr 0 | |
10130 | * bcl 20,31,1f | |
10131 | * 1: addi 11,11,(1b-res_0)@l | |
10132 | * mflr 12 | |
10133 | * mtlr 0 | |
07d6d2b8 | 10134 | * sub 11,11,12 # r11 = index * 4 |
a6aa5195 | 10135 | * addis 12,12,(got+4-1b)@ha |
07d6d2b8 AM |
10136 | * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve |
10137 | * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address | |
a6aa5195 AM |
10138 | * mtctr 0 |
10139 | * add 0,11,11 | |
07d6d2b8 | 10140 | * add 11,0,11 # r11 = index * 12 = reloc offset. |
a6aa5195 | 10141 | * bctr |
9e390558 | 10142 | * |
176a0d42 AM |
10143 | * Non-PIC glink code is a little simpler. |
10144 | * | |
10145 | * # ith PLT code stub. | |
10146 | * lis 11,(plt+(i-1)*4)@ha | |
10147 | * lwz 11,(plt+(i-1)*4)@l(11) | |
10148 | * mtctr 11 | |
10149 | * bctr | |
10150 | * | |
10151 | * The branch table is the same, then comes | |
10152 | * | |
10153 | * PLTresolve: | |
10154 | * lis 12,(got+4)@ha | |
10155 | * addis 11,11,(-res_0)@ha | |
07d6d2b8 AM |
10156 | * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve |
10157 | * addi 11,11,(-res_0)@l # r11 = index * 4 | |
176a0d42 AM |
10158 | * mtctr 0 |
10159 | * add 0,11,11 | |
07d6d2b8 AM |
10160 | * lwz 12,(got+8)@l(12) # got[2] contains the map address |
10161 | * add 11,0,11 # r11 = index * 12 = reloc offset. | |
176a0d42 AM |
10162 | * bctr |
10163 | */ | |
7e8aeb9a | 10164 | |
a6aa5195 | 10165 | /* Build the branch table, one for each plt entry (less one), |
86b9da88 | 10166 | and perhaps some padding. */ |
a6aa5195 AM |
10167 | p = htab->glink->contents; |
10168 | p += htab->glink_pltresolve; | |
86b9da88 AM |
10169 | endp = htab->glink->contents; |
10170 | endp += htab->glink->size - GLINK_PLTRESOLVE; | |
da3a2088 | 10171 | while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4)) |
86b9da88 AM |
10172 | { |
10173 | bfd_put_32 (output_bfd, B + endp - p, p); | |
10174 | p += 4; | |
10175 | } | |
10176 | while (p < endp) | |
10177 | { | |
10178 | bfd_put_32 (output_bfd, NOP, p); | |
10179 | p += 4; | |
10180 | } | |
10181 | ||
7e8aeb9a | 10182 | res0 = (htab->glink_pltresolve |
86b9da88 AM |
10183 | + htab->glink->output_section->vma |
10184 | + htab->glink->output_offset); | |
10185 | ||
da3a2088 AM |
10186 | if (htab->params->ppc476_workaround) |
10187 | { | |
10188 | /* Ensure that a call stub at the end of a page doesn't | |
10189 | result in prefetch over the end of the page into the | |
10190 | glink branch table. */ | |
10191 | bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; | |
10192 | bfd_vma page_addr; | |
10193 | bfd_vma glink_start = (htab->glink->output_section->vma | |
10194 | + htab->glink->output_offset); | |
10195 | ||
10196 | for (page_addr = res0 & -pagesize; | |
10197 | page_addr > glink_start; | |
10198 | page_addr -= pagesize) | |
10199 | { | |
10200 | /* We have a plt call stub that may need fixing. */ | |
10201 | bfd_byte *loc; | |
10202 | unsigned int insn; | |
10203 | ||
10204 | loc = htab->glink->contents + page_addr - 4 - glink_start; | |
10205 | insn = bfd_get_32 (output_bfd, loc); | |
10206 | if (insn == BCTR) | |
10207 | { | |
10208 | /* By alignment, we know that there must be at least | |
10209 | one other call stub before this one. */ | |
10210 | insn = bfd_get_32 (output_bfd, loc - 16); | |
10211 | if (insn == BCTR) | |
10212 | bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc); | |
10213 | else | |
10214 | bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc); | |
10215 | } | |
10216 | } | |
10217 | } | |
10218 | ||
86b9da88 | 10219 | /* Last comes the PLTresolve stub. */ |
9e390558 | 10220 | endp = p + GLINK_PLTRESOLVE; |
0e1862bb | 10221 | if (bfd_link_pic (info)) |
7e8aeb9a | 10222 | { |
a6aa5195 | 10223 | bfd_vma bcl; |
d7128ce4 | 10224 | |
a6aa5195 AM |
10225 | bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4 |
10226 | + htab->glink->output_section->vma | |
10227 | + htab->glink->output_offset); | |
10228 | ||
9e390558 AM |
10229 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p); |
10230 | p += 4; | |
10231 | bfd_put_32 (output_bfd, MFLR_0, p); | |
10232 | p += 4; | |
10233 | bfd_put_32 (output_bfd, BCL_20_31, p); | |
10234 | p += 4; | |
10235 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p); | |
10236 | p += 4; | |
10237 | bfd_put_32 (output_bfd, MFLR_12, p); | |
10238 | p += 4; | |
10239 | bfd_put_32 (output_bfd, MTLR_0, p); | |
10240 | p += 4; | |
10241 | bfd_put_32 (output_bfd, SUB_11_11_12, p); | |
10242 | p += 4; | |
10243 | bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p); | |
10244 | p += 4; | |
a6aa5195 AM |
10245 | if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl)) |
10246 | { | |
9e390558 AM |
10247 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p); |
10248 | p += 4; | |
10249 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p); | |
10250 | p += 4; | |
a6aa5195 AM |
10251 | } |
10252 | else | |
10253 | { | |
9e390558 AM |
10254 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p); |
10255 | p += 4; | |
10256 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10257 | p += 4; | |
a6aa5195 | 10258 | } |
9e390558 AM |
10259 | bfd_put_32 (output_bfd, MTCTR_0, p); |
10260 | p += 4; | |
10261 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
7e8aeb9a AM |
10262 | } |
10263 | else | |
d7128ce4 | 10264 | { |
9e390558 AM |
10265 | bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p); |
10266 | p += 4; | |
10267 | bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p); | |
10268 | p += 4; | |
a6aa5195 | 10269 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) |
9e390558 | 10270 | bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p); |
a6aa5195 | 10271 | else |
9e390558 AM |
10272 | bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p); |
10273 | p += 4; | |
10274 | bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p); | |
10275 | p += 4; | |
10276 | bfd_put_32 (output_bfd, MTCTR_0, p); | |
10277 | p += 4; | |
10278 | bfd_put_32 (output_bfd, ADD_0_11_11, p); | |
10279 | p += 4; | |
10280 | if (PPC_HA (got + 4) == PPC_HA (got + 8)) | |
10281 | bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p); | |
10282 | else | |
10283 | bfd_put_32 (output_bfd, LWZ_12_12 + 4, p); | |
10284 | } | |
10285 | p += 4; | |
10286 | bfd_put_32 (output_bfd, ADD_11_0_11, p); | |
10287 | p += 4; | |
407aa07c AM |
10288 | bfd_put_32 (output_bfd, BCTR, p); |
10289 | p += 4; | |
9e390558 AM |
10290 | while (p < endp) |
10291 | { | |
10292 | bfd_put_32 (output_bfd, | |
10293 | htab->params->ppc476_workaround ? BA : NOP, p); | |
10294 | p += 4; | |
d7128ce4 | 10295 | } |
9e390558 | 10296 | BFD_ASSERT (p == endp); |
d7128ce4 AM |
10297 | } |
10298 | ||
6177242a AM |
10299 | if (htab->glink_eh_frame != NULL |
10300 | && htab->glink_eh_frame->contents != NULL) | |
10301 | { | |
10302 | unsigned char *p = htab->glink_eh_frame->contents; | |
10303 | bfd_vma val; | |
10304 | ||
6177242a AM |
10305 | p += sizeof (glink_eh_frame_cie); |
10306 | /* FDE length. */ | |
6177242a AM |
10307 | p += 4; |
10308 | /* CIE pointer. */ | |
6177242a AM |
10309 | p += 4; |
10310 | /* Offset to .glink. */ | |
10311 | val = (htab->glink->output_section->vma | |
10312 | + htab->glink->output_offset); | |
10313 | val -= (htab->glink_eh_frame->output_section->vma | |
10314 | + htab->glink_eh_frame->output_offset); | |
10315 | val -= p - htab->glink_eh_frame->contents; | |
10316 | bfd_put_32 (htab->elf.dynobj, val, p); | |
6177242a | 10317 | |
dbaa2011 | 10318 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
6177242a AM |
10319 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
10320 | htab->glink_eh_frame, | |
10321 | htab->glink_eh_frame->contents)) | |
10322 | return FALSE; | |
10323 | } | |
10324 | ||
e87d4038 | 10325 | return ret; |
25dbc73a | 10326 | } |
e1a9cb8e | 10327 | \f |
6d00b590 | 10328 | #define TARGET_LITTLE_SYM powerpc_elf32_le_vec |
252b5132 | 10329 | #define TARGET_LITTLE_NAME "elf32-powerpcle" |
6d00b590 | 10330 | #define TARGET_BIG_SYM powerpc_elf32_vec |
252b5132 RH |
10331 | #define TARGET_BIG_NAME "elf32-powerpc" |
10332 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 10333 | #define ELF_TARGET_ID PPC32_ELF_DATA |
252b5132 RH |
10334 | #define ELF_MACHINE_CODE EM_PPC |
10335 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
10336 | #define ELF_COMMONPAGESIZE 0x1000 |
10337 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
252b5132 RH |
10338 | #define elf_info_to_howto ppc_elf_info_to_howto |
10339 | ||
10340 | #ifdef EM_CYGNUS_POWERPC | |
10341 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
10342 | #endif | |
10343 | ||
10344 | #ifdef EM_PPC_OLD | |
10345 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
10346 | #endif | |
10347 | ||
10348 | #define elf_backend_plt_not_loaded 1 | |
5474d94f | 10349 | #define elf_backend_want_dynrelro 1 |
252b5132 | 10350 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 10351 | #define elf_backend_can_refcount 1 |
b491616a | 10352 | #define elf_backend_rela_normal 1 |
53291d1f | 10353 | #define elf_backend_caches_rawsize 1 |
252b5132 | 10354 | |
43c40ab2 | 10355 | #define bfd_elf32_mkobject ppc_elf_mkobject |
252b5132 | 10356 | #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data |
70bccea4 | 10357 | #define bfd_elf32_bfd_relax_section ppc_elf_relax_section |
252b5132 | 10358 | #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup |
b9c361e0 | 10359 | #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup |
252b5132 | 10360 | #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags |
70bccea4 | 10361 | #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create |
468392fb | 10362 | #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab |
252b5132 | 10363 | |
feee612b | 10364 | #define elf_backend_object_p ppc_elf_object_p |
252b5132 | 10365 | #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook |
252b5132 RH |
10366 | #define elf_backend_section_from_shdr ppc_elf_section_from_shdr |
10367 | #define elf_backend_relocate_section ppc_elf_relocate_section | |
10368 | #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections | |
10369 | #define elf_backend_check_relocs ppc_elf_check_relocs | |
c0e331c7 | 10370 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
7fce784e | 10371 | #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol |
252b5132 RH |
10372 | #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol |
10373 | #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook | |
10374 | #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections | |
0eb4a168 | 10375 | #define elf_backend_hash_symbol ppc_elf_hash_symbol |
252b5132 RH |
10376 | #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol |
10377 | #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections | |
10378 | #define elf_backend_fake_sections ppc_elf_fake_sections | |
10379 | #define elf_backend_additional_program_headers ppc_elf_additional_program_headers | |
954b63d4 | 10380 | #define elf_backend_modify_segment_map ppc_elf_modify_segment_map |
c5fccbec DJ |
10381 | #define elf_backend_grok_prstatus ppc_elf_grok_prstatus |
10382 | #define elf_backend_grok_psinfo ppc_elf_grok_psinfo | |
183e98be | 10383 | #define elf_backend_write_core_note ppc_elf_write_core_note |
29c2fb7c | 10384 | #define elf_backend_reloc_type_class ppc_elf_reloc_type_class |
70bccea4 AM |
10385 | #define elf_backend_begin_write_processing ppc_elf_begin_write_processing |
10386 | #define elf_backend_final_write_processing ppc_elf_final_write_processing | |
10387 | #define elf_backend_write_section ppc_elf_write_section | |
551b43fd | 10388 | #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr |
4c45e5c9 | 10389 | #define elf_backend_plt_sym_val ppc_elf_plt_sym_val |
8a696751 | 10390 | #define elf_backend_action_discarded ppc_elf_action_discarded |
74541ad4 | 10391 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
b9c361e0 | 10392 | #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags |
252b5132 RH |
10393 | |
10394 | #include "elf32-target.h" | |
9d8504b1 | 10395 | |
7b8e7dad AM |
10396 | /* FreeBSD Target */ |
10397 | ||
10398 | #undef TARGET_LITTLE_SYM | |
10399 | #undef TARGET_LITTLE_NAME | |
10400 | ||
10401 | #undef TARGET_BIG_SYM | |
6d00b590 | 10402 | #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec |
7b8e7dad AM |
10403 | #undef TARGET_BIG_NAME |
10404 | #define TARGET_BIG_NAME "elf32-powerpc-freebsd" | |
10405 | ||
10406 | #undef ELF_OSABI | |
10407 | #define ELF_OSABI ELFOSABI_FREEBSD | |
10408 | ||
10409 | #undef elf32_bed | |
10410 | #define elf32_bed elf32_powerpc_fbsd_bed | |
10411 | ||
10412 | #include "elf32-target.h" | |
10413 | ||
9d8504b1 PB |
10414 | /* VxWorks Target */ |
10415 | ||
10416 | #undef TARGET_LITTLE_SYM | |
10417 | #undef TARGET_LITTLE_NAME | |
10418 | ||
10419 | #undef TARGET_BIG_SYM | |
6d00b590 | 10420 | #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec |
9d8504b1 PB |
10421 | #undef TARGET_BIG_NAME |
10422 | #define TARGET_BIG_NAME "elf32-powerpc-vxworks" | |
10423 | ||
7b8e7dad AM |
10424 | #undef ELF_OSABI |
10425 | ||
d5e3d971 PB |
10426 | /* VxWorks uses the elf default section flags for .plt. */ |
10427 | static const struct bfd_elf_special_section * | |
4aef7643 | 10428 | ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec) |
9d8504b1 | 10429 | { |
d5e3d971 PB |
10430 | if (sec->name == NULL) |
10431 | return NULL; | |
10432 | ||
10433 | if (strcmp (sec->name, ".plt") == 0) | |
10434 | return _bfd_elf_get_sec_type_attr (abfd, sec); | |
10435 | ||
10436 | return ppc_elf_get_sec_type_attr (abfd, sec); | |
10437 | } | |
9d8504b1 PB |
10438 | |
10439 | /* Like ppc_elf_link_hash_table_create, but overrides | |
10440 | appropriately for VxWorks. */ | |
10441 | static struct bfd_link_hash_table * | |
10442 | ppc_elf_vxworks_link_hash_table_create (bfd *abfd) | |
10443 | { | |
10444 | struct bfd_link_hash_table *ret; | |
10445 | ||
10446 | ret = ppc_elf_link_hash_table_create (abfd); | |
10447 | if (ret) | |
10448 | { | |
10449 | struct ppc_elf_link_hash_table *htab | |
954b63d4 | 10450 | = (struct ppc_elf_link_hash_table *)ret; |
9d8504b1 | 10451 | htab->is_vxworks = 1; |
4a3dc543 | 10452 | htab->plt_type = PLT_VXWORKS; |
9d8504b1 PB |
10453 | htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE; |
10454 | htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE; | |
10455 | htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE; | |
10456 | } | |
10457 | return ret; | |
10458 | } | |
10459 | ||
10460 | /* Tweak magic VxWorks symbols as they are loaded. */ | |
10461 | static bfd_boolean | |
10462 | ppc_elf_vxworks_add_symbol_hook (bfd *abfd, | |
10463 | struct bfd_link_info *info, | |
10464 | Elf_Internal_Sym *sym, | |
4aef7643 AM |
10465 | const char **namep, |
10466 | flagword *flagsp, | |
9d8504b1 PB |
10467 | asection **secp, |
10468 | bfd_vma *valp) | |
10469 | { | |
4aef7643 AM |
10470 | if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, |
10471 | valp)) | |
9d8504b1 PB |
10472 | return FALSE; |
10473 | ||
4aef7643 | 10474 | return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp); |
9d8504b1 PB |
10475 | } |
10476 | ||
cc364be6 AM |
10477 | static bfd_boolean |
10478 | ppc_elf_vxworks_final_write_processing (bfd *abfd) | |
9d8504b1 | 10479 | { |
cc364be6 AM |
10480 | ppc_final_write_processing (abfd); |
10481 | return elf_vxworks_final_write_processing (abfd); | |
9d8504b1 PB |
10482 | } |
10483 | ||
10484 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
10485 | define it. */ | |
10486 | #undef elf_backend_want_plt_sym | |
10487 | #define elf_backend_want_plt_sym 1 | |
10488 | #undef elf_backend_want_got_plt | |
10489 | #define elf_backend_want_got_plt 1 | |
10490 | #undef elf_backend_got_symbol_offset | |
10491 | #define elf_backend_got_symbol_offset 0 | |
10492 | #undef elf_backend_plt_not_loaded | |
10493 | #define elf_backend_plt_not_loaded 0 | |
10494 | #undef elf_backend_plt_readonly | |
10495 | #define elf_backend_plt_readonly 1 | |
10496 | #undef elf_backend_got_header_size | |
10497 | #define elf_backend_got_header_size 12 | |
64f52338 AM |
10498 | #undef elf_backend_dtrel_excludes_plt |
10499 | #define elf_backend_dtrel_excludes_plt 1 | |
9d8504b1 | 10500 | |
468392fb AM |
10501 | #undef bfd_elf32_get_synthetic_symtab |
10502 | ||
9d8504b1 PB |
10503 | #undef bfd_elf32_bfd_link_hash_table_create |
10504 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10505 | ppc_elf_vxworks_link_hash_table_create | |
9d8504b1 PB |
10506 | #undef elf_backend_add_symbol_hook |
10507 | #define elf_backend_add_symbol_hook \ | |
10508 | ppc_elf_vxworks_add_symbol_hook | |
10509 | #undef elf_backend_link_output_symbol_hook | |
10510 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 10511 | elf_vxworks_link_output_symbol_hook |
9d8504b1 PB |
10512 | #undef elf_backend_final_write_processing |
10513 | #define elf_backend_final_write_processing \ | |
10514 | ppc_elf_vxworks_final_write_processing | |
d5e3d971 PB |
10515 | #undef elf_backend_get_sec_type_attr |
10516 | #define elf_backend_get_sec_type_attr \ | |
10517 | ppc_elf_vxworks_get_sec_type_attr | |
9d8504b1 PB |
10518 | #undef elf_backend_emit_relocs |
10519 | #define elf_backend_emit_relocs \ | |
10520 | elf_vxworks_emit_relocs | |
10521 | ||
10522 | #undef elf32_bed | |
10523 | #define elf32_bed ppc_elf_vxworks_bed | |
10524 | ||
10525 | #include "elf32-target.h" |