1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
|
//===-- AArch64ELFObjectWriter.cpp - AArch64 ELF Writer -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file handles ELF-specific object emission, converting LLVM's internal
// fixups into the appropriate relocations.
//
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/AArch64FixupKinds.h"
#include "MCTargetDesc/AArch64MCExpr.h"
#include "MCTargetDesc/AArch64MCTargetDesc.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCFixup.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
#include <cassert>
#include <cstdint>
using namespace llvm;
namespace {
class AArch64ELFObjectWriter : public MCELFObjectTargetWriter {
public:
AArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32);
~AArch64ELFObjectWriter() override = default;
protected:
unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
const MCFixup &Fixup, bool IsPCRel) const override;
bool IsILP32;
};
} // end anonymous namespace
AArch64ELFObjectWriter::AArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32)
: MCELFObjectTargetWriter(/*Is64Bit*/ true, OSABI, ELF::EM_AARCH64,
/*HasRelocationAddend*/ true),
IsILP32(IsILP32) {}
#define R_CLS(rtype) \
IsILP32 ? ELF::R_AARCH64_P32_##rtype : ELF::R_AARCH64_##rtype
#define BAD_ILP32_MOV(lp64rtype) \
"ILP32 absolute MOV relocation not " \
"supported (LP64 eqv: " #lp64rtype ")"
// assumes IsILP32 is true
static bool isNonILP32reloc(const MCFixup &Fixup,
AArch64MCExpr::VariantKind RefKind,
MCContext &Ctx) {
if (Fixup.getTargetKind() != AArch64::fixup_aarch64_movw)
return false;
switch (RefKind) {
case AArch64MCExpr::VK_ABS_G3:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G3));
return true;
case AArch64MCExpr::VK_ABS_G2:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G2));
return true;
case AArch64MCExpr::VK_ABS_G2_S:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_SABS_G2));
return true;
case AArch64MCExpr::VK_ABS_G2_NC:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G2_NC));
return true;
case AArch64MCExpr::VK_ABS_G1_S:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_SABS_G1));
return true;
case AArch64MCExpr::VK_ABS_G1_NC:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G1_NC));
return true;
case AArch64MCExpr::VK_DTPREL_G2:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLD_MOVW_DTPREL_G2));
return true;
case AArch64MCExpr::VK_DTPREL_G1_NC:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLD_MOVW_DTPREL_G1_NC));
return true;
case AArch64MCExpr::VK_TPREL_G2:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLE_MOVW_TPREL_G2));
return true;
case AArch64MCExpr::VK_TPREL_G1_NC:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLE_MOVW_TPREL_G1_NC));
return true;
case AArch64MCExpr::VK_GOTTPREL_G1:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSIE_MOVW_GOTTPREL_G1));
return true;
case AArch64MCExpr::VK_GOTTPREL_G0_NC:
Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSIE_MOVW_GOTTPREL_G0_NC));
return true;
default:
return false;
}
return false;
}
unsigned AArch64ELFObjectWriter::getRelocType(MCContext &Ctx,
const MCValue &Target,
const MCFixup &Fixup,
bool IsPCRel) const {
unsigned Kind = Fixup.getTargetKind();
if (Kind >= FirstLiteralRelocationKind)
return Kind - FirstLiteralRelocationKind;
AArch64MCExpr::VariantKind RefKind =
static_cast<AArch64MCExpr::VariantKind>(Target.getRefKind());
AArch64MCExpr::VariantKind SymLoc = AArch64MCExpr::getSymbolLoc(RefKind);
bool IsNC = AArch64MCExpr::isNotChecked(RefKind);
assert((!Target.getSymA() ||
Target.getSymA()->getKind() == MCSymbolRefExpr::VK_None ||
Target.getSymA()->getKind() == MCSymbolRefExpr::VK_PLT) &&
"Should only be expression-level modifiers here");
assert((!Target.getSymB() ||
Target.getSymB()->getKind() == MCSymbolRefExpr::VK_None) &&
"Should only be expression-level modifiers here");
if (IsPCRel) {
switch (Kind) {
case FK_Data_1:
Ctx.reportError(Fixup.getLoc(), "1-byte data relocations not supported");
return ELF::R_AARCH64_NONE;
case FK_Data_2:
return R_CLS(PREL16);
case FK_Data_4: {
return Target.getAccessVariant() == MCSymbolRefExpr::VK_PLT
? R_CLS(PLT32)
: R_CLS(PREL32);
}
case FK_Data_8:
if (IsILP32) {
Ctx.reportError(Fixup.getLoc(),
"ILP32 8 byte PC relative data "
"relocation not supported (LP64 eqv: PREL64)");
return ELF::R_AARCH64_NONE;
} else
return ELF::R_AARCH64_PREL64;
case AArch64::fixup_aarch64_pcrel_adr_imm21:
if (SymLoc != AArch64MCExpr::VK_ABS)
Ctx.reportError(Fixup.getLoc(),
"invalid symbol kind for ADR relocation");
return R_CLS(ADR_PREL_LO21);
case AArch64::fixup_aarch64_pcrel_adrp_imm21:
if (SymLoc == AArch64MCExpr::VK_ABS && !IsNC)
return R_CLS(ADR_PREL_PG_HI21);
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC) {
if (IsILP32) {
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for 32-bit pcrel ADRP instruction "
"VK_ABS VK_NC");
return ELF::R_AARCH64_NONE;
} else {
return ELF::R_AARCH64_ADR_PREL_PG_HI21_NC;
}
}
if (SymLoc == AArch64MCExpr::VK_GOT && !IsNC)
return R_CLS(ADR_GOT_PAGE);
if (SymLoc == AArch64MCExpr::VK_GOTTPREL && !IsNC)
return R_CLS(TLSIE_ADR_GOTTPREL_PAGE21);
if (SymLoc == AArch64MCExpr::VK_TLSDESC && !IsNC)
return R_CLS(TLSDESC_ADR_PAGE21);
Ctx.reportError(Fixup.getLoc(),
"invalid symbol kind for ADRP relocation");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_pcrel_branch26:
return R_CLS(JUMP26);
case AArch64::fixup_aarch64_pcrel_call26:
return R_CLS(CALL26);
case AArch64::fixup_aarch64_ldr_pcrel_imm19:
if (SymLoc == AArch64MCExpr::VK_GOTTPREL)
return R_CLS(TLSIE_LD_GOTTPREL_PREL19);
if (SymLoc == AArch64MCExpr::VK_GOT)
return R_CLS(GOT_LD_PREL19);
return R_CLS(LD_PREL_LO19);
case AArch64::fixup_aarch64_pcrel_branch14:
return R_CLS(TSTBR14);
case AArch64::fixup_aarch64_pcrel_branch19:
return R_CLS(CONDBR19);
default:
Ctx.reportError(Fixup.getLoc(), "Unsupported pc-relative fixup kind");
return ELF::R_AARCH64_NONE;
}
} else {
if (IsILP32 && isNonILP32reloc(Fixup, RefKind, Ctx))
return ELF::R_AARCH64_NONE;
switch (Fixup.getTargetKind()) {
case FK_Data_1:
Ctx.reportError(Fixup.getLoc(), "1-byte data relocations not supported");
return ELF::R_AARCH64_NONE;
case FK_Data_2:
return R_CLS(ABS16);
case FK_Data_4:
return R_CLS(ABS32);
case FK_Data_8:
if (IsILP32) {
Ctx.reportError(Fixup.getLoc(),
"ILP32 8 byte absolute data "
"relocation not supported (LP64 eqv: ABS64)");
return ELF::R_AARCH64_NONE;
} else
return ELF::R_AARCH64_ABS64;
case AArch64::fixup_aarch64_add_imm12:
if (RefKind == AArch64MCExpr::VK_DTPREL_HI12)
return R_CLS(TLSLD_ADD_DTPREL_HI12);
if (RefKind == AArch64MCExpr::VK_TPREL_HI12)
return R_CLS(TLSLE_ADD_TPREL_HI12);
if (RefKind == AArch64MCExpr::VK_DTPREL_LO12_NC)
return R_CLS(TLSLD_ADD_DTPREL_LO12_NC);
if (RefKind == AArch64MCExpr::VK_DTPREL_LO12)
return R_CLS(TLSLD_ADD_DTPREL_LO12);
if (RefKind == AArch64MCExpr::VK_TPREL_LO12_NC)
return R_CLS(TLSLE_ADD_TPREL_LO12_NC);
if (RefKind == AArch64MCExpr::VK_TPREL_LO12)
return R_CLS(TLSLE_ADD_TPREL_LO12);
if (RefKind == AArch64MCExpr::VK_TLSDESC_LO12)
return R_CLS(TLSDESC_ADD_LO12);
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
return R_CLS(ADD_ABS_LO12_NC);
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for add (uimm12) instruction");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_ldst_imm12_scale1:
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
return R_CLS(LDST8_ABS_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
return R_CLS(TLSLD_LDST8_DTPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
return R_CLS(TLSLD_LDST8_DTPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
return R_CLS(TLSLE_LDST8_TPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
return R_CLS(TLSLE_LDST8_TPREL_LO12_NC);
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for 8-bit load/store instruction");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_ldst_imm12_scale2:
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
return R_CLS(LDST16_ABS_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
return R_CLS(TLSLD_LDST16_DTPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
return R_CLS(TLSLD_LDST16_DTPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
return R_CLS(TLSLE_LDST16_TPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
return R_CLS(TLSLE_LDST16_TPREL_LO12_NC);
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for 16-bit load/store instruction");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_ldst_imm12_scale4:
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
return R_CLS(LDST32_ABS_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
return R_CLS(TLSLD_LDST32_DTPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
return R_CLS(TLSLD_LDST32_DTPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
return R_CLS(TLSLE_LDST32_TPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
return R_CLS(TLSLE_LDST32_TPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_GOT && IsNC) {
if (IsILP32) {
return ELF::R_AARCH64_P32_LD32_GOT_LO12_NC;
} else {
Ctx.reportError(Fixup.getLoc(),
"LP64 4 byte unchecked GOT load/store relocation "
"not supported (ILP32 eqv: LD32_GOT_LO12_NC");
return ELF::R_AARCH64_NONE;
}
}
if (SymLoc == AArch64MCExpr::VK_GOT && !IsNC) {
if (IsILP32) {
Ctx.reportError(Fixup.getLoc(),
"ILP32 4 byte checked GOT load/store relocation "
"not supported (unchecked eqv: LD32_GOT_LO12_NC)");
} else {
Ctx.reportError(Fixup.getLoc(),
"LP64 4 byte checked GOT load/store relocation "
"not supported (unchecked/ILP32 eqv: "
"LD32_GOT_LO12_NC)");
}
return ELF::R_AARCH64_NONE;
}
if (SymLoc == AArch64MCExpr::VK_GOTTPREL && IsNC) {
if (IsILP32) {
return ELF::R_AARCH64_P32_TLSIE_LD32_GOTTPREL_LO12_NC;
} else {
Ctx.reportError(Fixup.getLoc(),
"LP64 32-bit load/store "
"relocation not supported (ILP32 eqv: "
"TLSIE_LD32_GOTTPREL_LO12_NC)");
return ELF::R_AARCH64_NONE;
}
}
if (SymLoc == AArch64MCExpr::VK_TLSDESC && !IsNC) {
if (IsILP32) {
return ELF::R_AARCH64_P32_TLSDESC_LD32_LO12;
} else {
Ctx.reportError(Fixup.getLoc(),
"LP64 4 byte TLSDESC load/store relocation "
"not supported (ILP32 eqv: TLSDESC_LD64_LO12)");
return ELF::R_AARCH64_NONE;
}
}
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for 32-bit load/store instruction "
"fixup_aarch64_ldst_imm12_scale4");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_ldst_imm12_scale8:
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
return R_CLS(LDST64_ABS_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_GOT && IsNC) {
if (!IsILP32) {
return ELF::R_AARCH64_LD64_GOT_LO12_NC;
} else {
Ctx.reportError(Fixup.getLoc(), "ILP32 64-bit load/store "
"relocation not supported (LP64 eqv: "
"LD64_GOT_LO12_NC)");
return ELF::R_AARCH64_NONE;
}
}
if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
return R_CLS(TLSLD_LDST64_DTPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
return R_CLS(TLSLD_LDST64_DTPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
return R_CLS(TLSLE_LDST64_TPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
return R_CLS(TLSLE_LDST64_TPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_GOTTPREL && IsNC) {
if (!IsILP32) {
return ELF::R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC;
} else {
Ctx.reportError(Fixup.getLoc(), "ILP32 64-bit load/store "
"relocation not supported (LP64 eqv: "
"TLSIE_LD64_GOTTPREL_LO12_NC)");
return ELF::R_AARCH64_NONE;
}
}
if (SymLoc == AArch64MCExpr::VK_TLSDESC) {
if (!IsILP32) {
return ELF::R_AARCH64_TLSDESC_LD64_LO12;
} else {
Ctx.reportError(Fixup.getLoc(), "ILP32 64-bit load/store "
"relocation not supported (LP64 eqv: "
"TLSDESC_LD64_LO12)");
return ELF::R_AARCH64_NONE;
}
}
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for 64-bit load/store instruction");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_ldst_imm12_scale16:
if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
return R_CLS(LDST128_ABS_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
return R_CLS(TLSLD_LDST128_DTPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
return R_CLS(TLSLD_LDST128_DTPREL_LO12_NC);
if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
return R_CLS(TLSLE_LDST128_TPREL_LO12);
if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
return R_CLS(TLSLE_LDST128_TPREL_LO12_NC);
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for 128-bit load/store instruction");
return ELF::R_AARCH64_NONE;
// ILP32 case not reached here, tested with isNonILP32reloc
case AArch64::fixup_aarch64_movw:
if (RefKind == AArch64MCExpr::VK_ABS_G3)
return ELF::R_AARCH64_MOVW_UABS_G3;
if (RefKind == AArch64MCExpr::VK_ABS_G2)
return ELF::R_AARCH64_MOVW_UABS_G2;
if (RefKind == AArch64MCExpr::VK_ABS_G2_S)
return ELF::R_AARCH64_MOVW_SABS_G2;
if (RefKind == AArch64MCExpr::VK_ABS_G2_NC)
return ELF::R_AARCH64_MOVW_UABS_G2_NC;
if (RefKind == AArch64MCExpr::VK_ABS_G1)
return R_CLS(MOVW_UABS_G1);
if (RefKind == AArch64MCExpr::VK_ABS_G1_S)
return ELF::R_AARCH64_MOVW_SABS_G1;
if (RefKind == AArch64MCExpr::VK_ABS_G1_NC)
return ELF::R_AARCH64_MOVW_UABS_G1_NC;
if (RefKind == AArch64MCExpr::VK_ABS_G0)
return R_CLS(MOVW_UABS_G0);
if (RefKind == AArch64MCExpr::VK_ABS_G0_S)
return R_CLS(MOVW_SABS_G0);
if (RefKind == AArch64MCExpr::VK_ABS_G0_NC)
return R_CLS(MOVW_UABS_G0_NC);
if (RefKind == AArch64MCExpr::VK_PREL_G3)
return ELF::R_AARCH64_MOVW_PREL_G3;
if (RefKind == AArch64MCExpr::VK_PREL_G2)
return ELF::R_AARCH64_MOVW_PREL_G2;
if (RefKind == AArch64MCExpr::VK_PREL_G2_NC)
return ELF::R_AARCH64_MOVW_PREL_G2_NC;
if (RefKind == AArch64MCExpr::VK_PREL_G1)
return R_CLS(MOVW_PREL_G1);
if (RefKind == AArch64MCExpr::VK_PREL_G1_NC)
return ELF::R_AARCH64_MOVW_PREL_G1_NC;
if (RefKind == AArch64MCExpr::VK_PREL_G0)
return R_CLS(MOVW_PREL_G0);
if (RefKind == AArch64MCExpr::VK_PREL_G0_NC)
return R_CLS(MOVW_PREL_G0_NC);
if (RefKind == AArch64MCExpr::VK_DTPREL_G2)
return ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G2;
if (RefKind == AArch64MCExpr::VK_DTPREL_G1)
return R_CLS(TLSLD_MOVW_DTPREL_G1);
if (RefKind == AArch64MCExpr::VK_DTPREL_G1_NC)
return ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC;
if (RefKind == AArch64MCExpr::VK_DTPREL_G0)
return R_CLS(TLSLD_MOVW_DTPREL_G0);
if (RefKind == AArch64MCExpr::VK_DTPREL_G0_NC)
return R_CLS(TLSLD_MOVW_DTPREL_G0_NC);
if (RefKind == AArch64MCExpr::VK_TPREL_G2)
return ELF::R_AARCH64_TLSLE_MOVW_TPREL_G2;
if (RefKind == AArch64MCExpr::VK_TPREL_G1)
return R_CLS(TLSLE_MOVW_TPREL_G1);
if (RefKind == AArch64MCExpr::VK_TPREL_G1_NC)
return ELF::R_AARCH64_TLSLE_MOVW_TPREL_G1_NC;
if (RefKind == AArch64MCExpr::VK_TPREL_G0)
return R_CLS(TLSLE_MOVW_TPREL_G0);
if (RefKind == AArch64MCExpr::VK_TPREL_G0_NC)
return R_CLS(TLSLE_MOVW_TPREL_G0_NC);
if (RefKind == AArch64MCExpr::VK_GOTTPREL_G1)
return ELF::R_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
if (RefKind == AArch64MCExpr::VK_GOTTPREL_G0_NC)
return ELF::R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
Ctx.reportError(Fixup.getLoc(),
"invalid fixup for movz/movk instruction");
return ELF::R_AARCH64_NONE;
case AArch64::fixup_aarch64_tlsdesc_call:
return R_CLS(TLSDESC_CALL);
default:
Ctx.reportError(Fixup.getLoc(), "Unknown ELF relocation type");
return ELF::R_AARCH64_NONE;
}
}
llvm_unreachable("Unimplemented fixup -> relocation");
}
std::unique_ptr<MCObjectTargetWriter>
llvm::createAArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32) {
return std::make_unique<AArch64ELFObjectWriter>(OSABI, IsILP32);
}
|
