LLVM  13.0.0git
AArch64ELFObjectWriter.cpp
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1 //===-- AArch64ELFObjectWriter.cpp - AArch64 ELF Writer -------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file handles ELF-specific object emission, converting LLVM's internal
10 // fixups into the appropriate relocations.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "MCTargetDesc/AArch64FixupKinds.h"
15 #include "MCTargetDesc/AArch64MCExpr.h"
16 #include "MCTargetDesc/AArch64MCTargetDesc.h"
17 #include "llvm/BinaryFormat/ELF.h"
18 #include "llvm/MC/MCContext.h"
19 #include "llvm/MC/MCELFObjectWriter.h"
20 #include "llvm/MC/MCFixup.h"
21 #include "llvm/MC/MCObjectWriter.h"
22 #include "llvm/MC/MCValue.h"
23 #include "llvm/Support/ErrorHandling.h"
24 #include <cassert>
25 #include <cstdint>
26 
27 using namespace llvm;
28 
29 namespace {
30 
31 class AArch64ELFObjectWriter : public MCELFObjectTargetWriter {
32 public:
33  AArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32);
34 
35  ~AArch64ELFObjectWriter() override = default;
36 
37 protected:
38  unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
39  const MCFixup &Fixup, bool IsPCRel) const override;
40  bool IsILP32;
41 };
42 
43 } // end anonymous namespace
44 
45 AArch64ELFObjectWriter::AArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32)
46  : MCELFObjectTargetWriter(/*Is64Bit*/ !IsILP32, OSABI, ELF::EM_AARCH64,
47  /*HasRelocationAddend*/ true),
48  IsILP32(IsILP32) {}
49 
50 #define R_CLS(rtype) \
51  IsILP32 ? ELF::R_AARCH64_P32_##rtype : ELF::R_AARCH64_##rtype
52 #define BAD_ILP32_MOV(lp64rtype) \
53  "ILP32 absolute MOV relocation not " \
54  "supported (LP64 eqv: " #lp64rtype ")"
55 
56 // assumes IsILP32 is true
57 static bool isNonILP32reloc(const MCFixup &Fixup,
58  AArch64MCExpr::VariantKind RefKind,
59  MCContext &Ctx) {
60  if (Fixup.getTargetKind() != AArch64::fixup_aarch64_movw)
61  return false;
62  switch (RefKind) {
63  case AArch64MCExpr::VK_ABS_G3:
64  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G3));
65  return true;
66  case AArch64MCExpr::VK_ABS_G2:
67  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G2));
68  return true;
69  case AArch64MCExpr::VK_ABS_G2_S:
70  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_SABS_G2));
71  return true;
72  case AArch64MCExpr::VK_ABS_G2_NC:
73  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G2_NC));
74  return true;
75  case AArch64MCExpr::VK_ABS_G1_S:
76  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_SABS_G1));
77  return true;
78  case AArch64MCExpr::VK_ABS_G1_NC:
79  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(MOVW_UABS_G1_NC));
80  return true;
81  case AArch64MCExpr::VK_DTPREL_G2:
82  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLD_MOVW_DTPREL_G2));
83  return true;
84  case AArch64MCExpr::VK_DTPREL_G1_NC:
85  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLD_MOVW_DTPREL_G1_NC));
86  return true;
87  case AArch64MCExpr::VK_TPREL_G2:
88  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLE_MOVW_TPREL_G2));
89  return true;
90  case AArch64MCExpr::VK_TPREL_G1_NC:
91  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSLE_MOVW_TPREL_G1_NC));
92  return true;
93  case AArch64MCExpr::VK_GOTTPREL_G1:
94  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSIE_MOVW_GOTTPREL_G1));
95  return true;
96  case AArch64MCExpr::VK_GOTTPREL_G0_NC:
97  Ctx.reportError(Fixup.getLoc(), BAD_ILP32_MOV(TLSIE_MOVW_GOTTPREL_G0_NC));
98  return true;
99  default:
100  return false;
101  }
102  return false;
103 }
104 
105 unsigned AArch64ELFObjectWriter::getRelocType(MCContext &Ctx,
106  const MCValue &Target,
107  const MCFixup &Fixup,
108  bool IsPCRel) const {
109  unsigned Kind = Fixup.getTargetKind();
110  if (Kind >= FirstLiteralRelocationKind)
111  return Kind - FirstLiteralRelocationKind;
112  AArch64MCExpr::VariantKind RefKind =
113  static_cast<AArch64MCExpr::VariantKind>(Target.getRefKind());
114  AArch64MCExpr::VariantKind SymLoc = AArch64MCExpr::getSymbolLoc(RefKind);
115  bool IsNC = AArch64MCExpr::isNotChecked(RefKind);
116 
117  assert((!Target.getSymA() ||
118  Target.getSymA()->getKind() == MCSymbolRefExpr::VK_None ||
119  Target.getSymA()->getKind() == MCSymbolRefExpr::VK_PLT) &&
120  "Should only be expression-level modifiers here");
121 
122  assert((!Target.getSymB() ||
123  Target.getSymB()->getKind() == MCSymbolRefExpr::VK_None) &&
124  "Should only be expression-level modifiers here");
125 
126  if (IsPCRel) {
127  switch (Kind) {
128  case FK_Data_1:
129  Ctx.reportError(Fixup.getLoc(), "1-byte data relocations not supported");
130  return ELF::R_AARCH64_NONE;
131  case FK_Data_2:
132  return R_CLS(PREL16);
133  case FK_Data_4: {
134  return Target.getAccessVariant() == MCSymbolRefExpr::VK_PLT
135  ? R_CLS(PLT32)
136  : R_CLS(PREL32);
137  }
138  case FK_Data_8:
139  if (IsILP32) {
140  Ctx.reportError(Fixup.getLoc(),
141  "ILP32 8 byte PC relative data "
142  "relocation not supported (LP64 eqv: PREL64)");
143  return ELF::R_AARCH64_NONE;
144  } else
145  return ELF::R_AARCH64_PREL64;
146  case AArch64::fixup_aarch64_pcrel_adr_imm21:
147  if (SymLoc != AArch64MCExpr::VK_ABS)
148  Ctx.reportError(Fixup.getLoc(),
149  "invalid symbol kind for ADR relocation");
150  return R_CLS(ADR_PREL_LO21);
151  case AArch64::fixup_aarch64_pcrel_adrp_imm21:
152  if (SymLoc == AArch64MCExpr::VK_ABS && !IsNC)
153  return R_CLS(ADR_PREL_PG_HI21);
154  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC) {
155  if (IsILP32) {
156  Ctx.reportError(Fixup.getLoc(),
157  "invalid fixup for 32-bit pcrel ADRP instruction "
158  "VK_ABS VK_NC");
159  return ELF::R_AARCH64_NONE;
160  } else {
161  return ELF::R_AARCH64_ADR_PREL_PG_HI21_NC;
162  }
163  }
164  if (SymLoc == AArch64MCExpr::VK_GOT && !IsNC)
165  return R_CLS(ADR_GOT_PAGE);
166  if (SymLoc == AArch64MCExpr::VK_GOTTPREL && !IsNC)
167  return R_CLS(TLSIE_ADR_GOTTPREL_PAGE21);
168  if (SymLoc == AArch64MCExpr::VK_TLSDESC && !IsNC)
169  return R_CLS(TLSDESC_ADR_PAGE21);
170  Ctx.reportError(Fixup.getLoc(),
171  "invalid symbol kind for ADRP relocation");
172  return ELF::R_AARCH64_NONE;
173  case AArch64::fixup_aarch64_pcrel_branch26:
174  return R_CLS(JUMP26);
175  case AArch64::fixup_aarch64_pcrel_call26:
176  return R_CLS(CALL26);
177  case AArch64::fixup_aarch64_ldr_pcrel_imm19:
178  if (SymLoc == AArch64MCExpr::VK_GOTTPREL)
179  return R_CLS(TLSIE_LD_GOTTPREL_PREL19);
180  if (SymLoc == AArch64MCExpr::VK_GOT)
181  return R_CLS(GOT_LD_PREL19);
182  return R_CLS(LD_PREL_LO19);
183  case AArch64::fixup_aarch64_pcrel_branch14:
184  return R_CLS(TSTBR14);
185  case AArch64::fixup_aarch64_pcrel_branch19:
186  return R_CLS(CONDBR19);
187  default:
188  Ctx.reportError(Fixup.getLoc(), "Unsupported pc-relative fixup kind");
189  return ELF::R_AARCH64_NONE;
190  }
191  } else {
192  if (IsILP32 && isNonILP32reloc(Fixup, RefKind, Ctx))
193  return ELF::R_AARCH64_NONE;
194  switch (Fixup.getTargetKind()) {
195  case FK_Data_1:
196  Ctx.reportError(Fixup.getLoc(), "1-byte data relocations not supported");
197  return ELF::R_AARCH64_NONE;
198  case FK_Data_2:
199  return R_CLS(ABS16);
200  case FK_Data_4:
201  return R_CLS(ABS32);
202  case FK_Data_8:
203  if (IsILP32) {
204  Ctx.reportError(Fixup.getLoc(),
205  "ILP32 8 byte absolute data "
206  "relocation not supported (LP64 eqv: ABS64)");
207  return ELF::R_AARCH64_NONE;
208  } else
209  return ELF::R_AARCH64_ABS64;
210  case AArch64::fixup_aarch64_add_imm12:
211  if (RefKind == AArch64MCExpr::VK_DTPREL_HI12)
212  return R_CLS(TLSLD_ADD_DTPREL_HI12);
213  if (RefKind == AArch64MCExpr::VK_TPREL_HI12)
214  return R_CLS(TLSLE_ADD_TPREL_HI12);
215  if (RefKind == AArch64MCExpr::VK_DTPREL_LO12_NC)
216  return R_CLS(TLSLD_ADD_DTPREL_LO12_NC);
217  if (RefKind == AArch64MCExpr::VK_DTPREL_LO12)
218  return R_CLS(TLSLD_ADD_DTPREL_LO12);
219  if (RefKind == AArch64MCExpr::VK_TPREL_LO12_NC)
220  return R_CLS(TLSLE_ADD_TPREL_LO12_NC);
221  if (RefKind == AArch64MCExpr::VK_TPREL_LO12)
222  return R_CLS(TLSLE_ADD_TPREL_LO12);
223  if (RefKind == AArch64MCExpr::VK_TLSDESC_LO12)
224  return R_CLS(TLSDESC_ADD_LO12);
225  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
226  return R_CLS(ADD_ABS_LO12_NC);
227 
228  Ctx.reportError(Fixup.getLoc(),
229  "invalid fixup for add (uimm12) instruction");
230  return ELF::R_AARCH64_NONE;
231  case AArch64::fixup_aarch64_ldst_imm12_scale1:
232  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
233  return R_CLS(LDST8_ABS_LO12_NC);
234  if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
235  return R_CLS(TLSLD_LDST8_DTPREL_LO12);
236  if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
237  return R_CLS(TLSLD_LDST8_DTPREL_LO12_NC);
238  if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
239  return R_CLS(TLSLE_LDST8_TPREL_LO12);
240  if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
241  return R_CLS(TLSLE_LDST8_TPREL_LO12_NC);
242 
243  Ctx.reportError(Fixup.getLoc(),
244  "invalid fixup for 8-bit load/store instruction");
245  return ELF::R_AARCH64_NONE;
246  case AArch64::fixup_aarch64_ldst_imm12_scale2:
247  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
248  return R_CLS(LDST16_ABS_LO12_NC);
249  if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
250  return R_CLS(TLSLD_LDST16_DTPREL_LO12);
251  if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
252  return R_CLS(TLSLD_LDST16_DTPREL_LO12_NC);
253  if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
254  return R_CLS(TLSLE_LDST16_TPREL_LO12);
255  if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
256  return R_CLS(TLSLE_LDST16_TPREL_LO12_NC);
257 
258  Ctx.reportError(Fixup.getLoc(),
259  "invalid fixup for 16-bit load/store instruction");
260  return ELF::R_AARCH64_NONE;
261  case AArch64::fixup_aarch64_ldst_imm12_scale4:
262  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
263  return R_CLS(LDST32_ABS_LO12_NC);
264  if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
265  return R_CLS(TLSLD_LDST32_DTPREL_LO12);
266  if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
267  return R_CLS(TLSLD_LDST32_DTPREL_LO12_NC);
268  if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
269  return R_CLS(TLSLE_LDST32_TPREL_LO12);
270  if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
271  return R_CLS(TLSLE_LDST32_TPREL_LO12_NC);
272  if (SymLoc == AArch64MCExpr::VK_GOT && IsNC) {
273  if (IsILP32) {
274  return ELF::R_AARCH64_P32_LD32_GOT_LO12_NC;
275  } else {
276  Ctx.reportError(Fixup.getLoc(),
277  "LP64 4 byte unchecked GOT load/store relocation "
278  "not supported (ILP32 eqv: LD32_GOT_LO12_NC");
279  return ELF::R_AARCH64_NONE;
280  }
281  }
282  if (SymLoc == AArch64MCExpr::VK_GOT && !IsNC) {
283  if (IsILP32) {
284  Ctx.reportError(Fixup.getLoc(),
285  "ILP32 4 byte checked GOT load/store relocation "
286  "not supported (unchecked eqv: LD32_GOT_LO12_NC)");
287  } else {
288  Ctx.reportError(Fixup.getLoc(),
289  "LP64 4 byte checked GOT load/store relocation "
290  "not supported (unchecked/ILP32 eqv: "
291  "LD32_GOT_LO12_NC)");
292  }
293  return ELF::R_AARCH64_NONE;
294  }
295  if (SymLoc == AArch64MCExpr::VK_GOTTPREL && IsNC) {
296  if (IsILP32) {
297  return ELF::R_AARCH64_P32_TLSIE_LD32_GOTTPREL_LO12_NC;
298  } else {
299  Ctx.reportError(Fixup.getLoc(),
300  "LP64 32-bit load/store "
301  "relocation not supported (ILP32 eqv: "
302  "TLSIE_LD32_GOTTPREL_LO12_NC)");
303  return ELF::R_AARCH64_NONE;
304  }
305  }
306  if (SymLoc == AArch64MCExpr::VK_TLSDESC && !IsNC) {
307  if (IsILP32) {
308  return ELF::R_AARCH64_P32_TLSDESC_LD32_LO12;
309  } else {
310  Ctx.reportError(Fixup.getLoc(),
311  "LP64 4 byte TLSDESC load/store relocation "
312  "not supported (ILP32 eqv: TLSDESC_LD64_LO12)");
313  return ELF::R_AARCH64_NONE;
314  }
315  }
316 
317  Ctx.reportError(Fixup.getLoc(),
318  "invalid fixup for 32-bit load/store instruction "
319  "fixup_aarch64_ldst_imm12_scale4");
320  return ELF::R_AARCH64_NONE;
321  case AArch64::fixup_aarch64_ldst_imm12_scale8:
322  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
323  return R_CLS(LDST64_ABS_LO12_NC);
324  if (SymLoc == AArch64MCExpr::VK_GOT && IsNC) {
325  AArch64MCExpr::VariantKind AddressLoc =
326  AArch64MCExpr::getAddressFrag(RefKind);
327  if (!IsILP32) {
328  if (AddressLoc == AArch64MCExpr::VK_LO15)
329  return ELF::R_AARCH64_LD64_GOTPAGE_LO15;
330  return ELF::R_AARCH64_LD64_GOT_LO12_NC;
331  } else {
332  Ctx.reportError(Fixup.getLoc(), "ILP32 64-bit load/store "
333  "relocation not supported (LP64 eqv: "
334  "LD64_GOT_LO12_NC)");
335  return ELF::R_AARCH64_NONE;
336  }
337  }
338  if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
339  return R_CLS(TLSLD_LDST64_DTPREL_LO12);
340  if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
341  return R_CLS(TLSLD_LDST64_DTPREL_LO12_NC);
342  if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
343  return R_CLS(TLSLE_LDST64_TPREL_LO12);
344  if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
345  return R_CLS(TLSLE_LDST64_TPREL_LO12_NC);
346  if (SymLoc == AArch64MCExpr::VK_GOTTPREL && IsNC) {
347  if (!IsILP32) {
348  return ELF::R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC;
349  } else {
350  Ctx.reportError(Fixup.getLoc(), "ILP32 64-bit load/store "
351  "relocation not supported (LP64 eqv: "
352  "TLSIE_LD64_GOTTPREL_LO12_NC)");
353  return ELF::R_AARCH64_NONE;
354  }
355  }
356  if (SymLoc == AArch64MCExpr::VK_TLSDESC) {
357  if (!IsILP32) {
358  return ELF::R_AARCH64_TLSDESC_LD64_LO12;
359  } else {
360  Ctx.reportError(Fixup.getLoc(), "ILP32 64-bit load/store "
361  "relocation not supported (LP64 eqv: "
362  "TLSDESC_LD64_LO12)");
363  return ELF::R_AARCH64_NONE;
364  }
365  }
366  Ctx.reportError(Fixup.getLoc(),
367  "invalid fixup for 64-bit load/store instruction");
368  return ELF::R_AARCH64_NONE;
369  case AArch64::fixup_aarch64_ldst_imm12_scale16:
370  if (SymLoc == AArch64MCExpr::VK_ABS && IsNC)
371  return R_CLS(LDST128_ABS_LO12_NC);
372  if (SymLoc == AArch64MCExpr::VK_DTPREL && !IsNC)
373  return R_CLS(TLSLD_LDST128_DTPREL_LO12);
374  if (SymLoc == AArch64MCExpr::VK_DTPREL && IsNC)
375  return R_CLS(TLSLD_LDST128_DTPREL_LO12_NC);
376  if (SymLoc == AArch64MCExpr::VK_TPREL && !IsNC)
377  return R_CLS(TLSLE_LDST128_TPREL_LO12);
378  if (SymLoc == AArch64MCExpr::VK_TPREL && IsNC)
379  return R_CLS(TLSLE_LDST128_TPREL_LO12_NC);
380 
381  Ctx.reportError(Fixup.getLoc(),
382  "invalid fixup for 128-bit load/store instruction");
383  return ELF::R_AARCH64_NONE;
384  // ILP32 case not reached here, tested with isNonILP32reloc
385  case AArch64::fixup_aarch64_movw:
386  if (RefKind == AArch64MCExpr::VK_ABS_G3)
387  return ELF::R_AARCH64_MOVW_UABS_G3;
388  if (RefKind == AArch64MCExpr::VK_ABS_G2)
389  return ELF::R_AARCH64_MOVW_UABS_G2;
390  if (RefKind == AArch64MCExpr::VK_ABS_G2_S)
391  return ELF::R_AARCH64_MOVW_SABS_G2;
392  if (RefKind == AArch64MCExpr::VK_ABS_G2_NC)
393  return ELF::R_AARCH64_MOVW_UABS_G2_NC;
394  if (RefKind == AArch64MCExpr::VK_ABS_G1)
395  return R_CLS(MOVW_UABS_G1);
396  if (RefKind == AArch64MCExpr::VK_ABS_G1_S)
397  return ELF::R_AARCH64_MOVW_SABS_G1;
398  if (RefKind == AArch64MCExpr::VK_ABS_G1_NC)
399  return ELF::R_AARCH64_MOVW_UABS_G1_NC;
400  if (RefKind == AArch64MCExpr::VK_ABS_G0)
401  return R_CLS(MOVW_UABS_G0);
402  if (RefKind == AArch64MCExpr::VK_ABS_G0_S)
403  return R_CLS(MOVW_SABS_G0);
404  if (RefKind == AArch64MCExpr::VK_ABS_G0_NC)
405  return R_CLS(MOVW_UABS_G0_NC);
406  if (RefKind == AArch64MCExpr::VK_PREL_G3)
407  return ELF::R_AARCH64_MOVW_PREL_G3;
408  if (RefKind == AArch64MCExpr::VK_PREL_G2)
409  return ELF::R_AARCH64_MOVW_PREL_G2;
410  if (RefKind == AArch64MCExpr::VK_PREL_G2_NC)
411  return ELF::R_AARCH64_MOVW_PREL_G2_NC;
412  if (RefKind == AArch64MCExpr::VK_PREL_G1)
413  return R_CLS(MOVW_PREL_G1);
414  if (RefKind == AArch64MCExpr::VK_PREL_G1_NC)
415  return ELF::R_AARCH64_MOVW_PREL_G1_NC;
416  if (RefKind == AArch64MCExpr::VK_PREL_G0)
417  return R_CLS(MOVW_PREL_G0);
418  if (RefKind == AArch64MCExpr::VK_PREL_G0_NC)
419  return R_CLS(MOVW_PREL_G0_NC);
420  if (RefKind == AArch64MCExpr::VK_DTPREL_G2)
421  return ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G2;
422  if (RefKind == AArch64MCExpr::VK_DTPREL_G1)
423  return R_CLS(TLSLD_MOVW_DTPREL_G1);
424  if (RefKind == AArch64MCExpr::VK_DTPREL_G1_NC)
425  return ELF::R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC;
426  if (RefKind == AArch64MCExpr::VK_DTPREL_G0)
427  return R_CLS(TLSLD_MOVW_DTPREL_G0);
428  if (RefKind == AArch64MCExpr::VK_DTPREL_G0_NC)
429  return R_CLS(TLSLD_MOVW_DTPREL_G0_NC);
430  if (RefKind == AArch64MCExpr::VK_TPREL_G2)
431  return ELF::R_AARCH64_TLSLE_MOVW_TPREL_G2;
432  if (RefKind == AArch64MCExpr::VK_TPREL_G1)
433  return R_CLS(TLSLE_MOVW_TPREL_G1);
434  if (RefKind == AArch64MCExpr::VK_TPREL_G1_NC)
435  return ELF::R_AARCH64_TLSLE_MOVW_TPREL_G1_NC;
436  if (RefKind == AArch64MCExpr::VK_TPREL_G0)
437  return R_CLS(TLSLE_MOVW_TPREL_G0);
438  if (RefKind == AArch64MCExpr::VK_TPREL_G0_NC)
439  return R_CLS(TLSLE_MOVW_TPREL_G0_NC);
440  if (RefKind == AArch64MCExpr::VK_GOTTPREL_G1)
441  return ELF::R_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
442  if (RefKind == AArch64MCExpr::VK_GOTTPREL_G0_NC)
443  return ELF::R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
444  Ctx.reportError(Fixup.getLoc(),
445  "invalid fixup for movz/movk instruction");
446  return ELF::R_AARCH64_NONE;
447  case AArch64::fixup_aarch64_tlsdesc_call:
448  return R_CLS(TLSDESC_CALL);
449  default:
450  Ctx.reportError(Fixup.getLoc(), "Unknown ELF relocation type");
451  return ELF::R_AARCH64_NONE;
452  }
453  }
454 
455  llvm_unreachable("Unimplemented fixup -> relocation");
456 }
457 
458 std::unique_ptr<MCObjectTargetWriter>
459 llvm::createAArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32) {
460  return std::make_unique<AArch64ELFObjectWriter>(OSABI, IsILP32);
461 }
llvm
Definition: AllocatorList.h:23
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:71
llvm::AArch64::fixup_aarch64_pcrel_branch26
@ fixup_aarch64_pcrel_branch26
Definition: AArch64FixupKinds.h:52
llvm::AArch64::fixup_aarch64_add_imm12
@ fixup_aarch64_add_imm12
Definition: AArch64FixupKinds.h:26
llvm::AArch64::fixup_aarch64_ldr_pcrel_imm19
@ fixup_aarch64_ldr_pcrel_imm19
Definition: AArch64FixupKinds.h:38
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:124
llvm::AArch64::fixup_aarch64_ldst_imm12_scale2
@ fixup_aarch64_ldst_imm12_scale2
Definition: AArch64FixupKinds.h:30
AArch64MCExpr.h
ErrorHandling.h
llvm::FirstLiteralRelocationKind
@ FirstLiteralRelocationKind
The range [FirstLiteralRelocationKind, MaxTargetFixupKind) is used for relocations coming from ....
Definition: MCFixup.h:60
llvm::FK_Data_4
@ FK_Data_4
A four-byte fixup.
Definition: MCFixup.h:25
llvm::createAArch64ELFObjectWriter
std::unique_ptr< MCObjectTargetWriter > createAArch64ELFObjectWriter(uint8_t OSABI, bool IsILP32)
Definition: AArch64ELFObjectWriter.cpp:459
ELF.h
MCContext.h
AArch64FixupKinds.h
llvm::AArch64::fixup_aarch64_pcrel_branch19
@ fixup_aarch64_pcrel_branch19
Definition: AArch64FixupKinds.h:49
llvm::MCELFObjectTargetWriter
Definition: MCELFObjectWriter.h:53
llvm::lltok::Kind
Kind
Definition: LLToken.h:18
llvm::ELF::EM_AARCH64
@ EM_AARCH64
Definition: ELF.h:279
llvm::AArch64::fixup_aarch64_ldst_imm12_scale8
@ fixup_aarch64_ldst_imm12_scale8
Definition: AArch64FixupKinds.h:32
R_CLS
#define R_CLS(rtype)
Definition: AArch64ELFObjectWriter.cpp:50
MCELFObjectWriter.h
llvm::AArch64::fixup_aarch64_ldst_imm12_scale4
@ fixup_aarch64_ldst_imm12_scale4
Definition: AArch64FixupKinds.h:31
llvm::AArch64::fixup_aarch64_pcrel_call26
@ fixup_aarch64_pcrel_call26
Definition: AArch64FixupKinds.h:56
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::MCContext::reportError
void reportError(SMLoc L, const Twine &Msg)
Definition: MCContext.cpp:946
llvm::AArch64::fixup_aarch64_tlsdesc_call
@ fixup_aarch64_tlsdesc_call
Definition: AArch64FixupKinds.h:59
llvm::FK_Data_1
@ FK_Data_1
A one-byte fixup.
Definition: MCFixup.h:23
BAD_ILP32_MOV
#define BAD_ILP32_MOV(lp64rtype)
Definition: AArch64ELFObjectWriter.cpp:52
llvm::AArch64::fixup_aarch64_ldst_imm12_scale1
@ fixup_aarch64_ldst_imm12_scale1
Definition: AArch64FixupKinds.h:29
Fixup
PowerPC TLS Dynamic Call Fixup
Definition: PPCTLSDynamicCall.cpp:235
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:136
MCFixup.h
llvm::AArch64::fixup_aarch64_pcrel_branch14
@ fixup_aarch64_pcrel_branch14
Definition: AArch64FixupKinds.h:44
isNonILP32reloc
static bool isNonILP32reloc(const MCFixup &Fixup, AArch64MCExpr::VariantKind RefKind, MCContext &Ctx)
Definition: AArch64ELFObjectWriter.cpp:57
MCObjectWriter.h
llvm::AArch64::fixup_aarch64_movw
@ fixup_aarch64_movw
Definition: AArch64FixupKinds.h:41
llvm::AArch64::fixup_aarch64_ldst_imm12_scale16
@ fixup_aarch64_ldst_imm12_scale16
Definition: AArch64FixupKinds.h:33
AArch64MCTargetDesc.h
MCValue.h
llvm::FK_Data_8
@ FK_Data_8
A eight-byte fixup.
Definition: MCFixup.h:26
llvm::AArch64MCExpr::VariantKind
VariantKind
Definition: AArch64MCExpr.h:24
llvm::AArch64::fixup_aarch64_pcrel_adrp_imm21
@ fixup_aarch64_pcrel_adrp_imm21
Definition: AArch64FixupKinds.h:22
llvm::MCValue
This represents an "assembler immediate".
Definition: MCValue.h:37
llvm::FK_Data_2
@ FK_Data_2
A two-byte fixup.
Definition: MCFixup.h:24
true
basic Basic Alias true
Definition: BasicAliasAnalysis.cpp:1789
llvm::MCFixup
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:81
llvm::AArch64::fixup_aarch64_pcrel_adr_imm21
@ fixup_aarch64_pcrel_adr_imm21
Definition: AArch64FixupKinds.h:19
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