HexagonELFObjectWriter.cpp revision 360784 
1//===-- HexagonELFObjectWriter.cpp - Hexagon Target Descriptions ----------===//
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#include "MCTargetDesc/HexagonFixupKinds.h"
10#include "MCTargetDesc/HexagonMCTargetDesc.h"
11#include "llvm/MC/MCAssembler.h"
12#include "llvm/MC/MCELFObjectWriter.h"
13#include "llvm/MC/MCObjectWriter.h"
14#include "llvm/MC/MCValue.h"
15#include "llvm/Support/Debug.h"
16#include "llvm/Support/raw_ostream.h"
17
18#define DEBUG_TYPE "hexagon-elf-writer"
19
20using namespace llvm;
21using namespace Hexagon;
22
23namespace {
24
25class HexagonELFObjectWriter : public MCELFObjectTargetWriter {
26private:
27  StringRef CPU;
28
29public:
30  HexagonELFObjectWriter(uint8_t OSABI, StringRef C);
31
32  unsigned getRelocType(MCContext &Ctx, MCValue const &Target,
33                        MCFixup const &Fixup, bool IsPCRel) const override;
34};
35}
36
37HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C)
38    : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON,
39                              /*HasRelocationAddend*/ true),
40      CPU(C) {}
41
42unsigned HexagonELFObjectWriter::getRelocType(MCContext &Ctx,
43                                              MCValue const &Target,
44                                              MCFixup const &Fixup,
45                                              bool IsPCRel) const {
46  MCSymbolRefExpr::VariantKind Variant = Target.getAccessVariant();
47  switch (Fixup.getTargetKind()) {
48  default:
49    report_fatal_error("Unrecognized relocation type");
50    break;
51  case FK_Data_4:
52    switch(Variant) {
53    case MCSymbolRefExpr::VariantKind::VK_DTPREL:
54      return ELF::R_HEX_DTPREL_32;
55    case MCSymbolRefExpr::VariantKind::VK_GOT:
56      return ELF::R_HEX_GOT_32;
57    case MCSymbolRefExpr::VariantKind::VK_GOTREL:
58      return ELF::R_HEX_GOTREL_32;
59    case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
60      return ELF::R_HEX_GD_GOT_32;
61    case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE:
62      return ELF::R_HEX_IE_32;
63    case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
64      return ELF::R_HEX_IE_GOT_32;
65    case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
66      return ELF::R_HEX_LD_GOT_32;
67    case MCSymbolRefExpr::VariantKind::VK_Hexagon_PCREL:
68      return ELF::R_HEX_32_PCREL;
69    case MCSymbolRefExpr::VariantKind::VK_TPREL:
70      return ELF::R_HEX_TPREL_32;
71    case MCSymbolRefExpr::VariantKind::VK_None:
72      return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32;
73    default:
74      report_fatal_error("Unrecognized variant type");
75    };
76  case FK_PCRel_4:
77    return ELF::R_HEX_32_PCREL;
78  case FK_Data_2:
79    switch(Variant) {
80    case MCSymbolRefExpr::VariantKind::VK_DTPREL:
81      return ELF::R_HEX_DTPREL_16;
82    case MCSymbolRefExpr::VariantKind::VK_GOT:
83      return ELF::R_HEX_GOT_16;
84    case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
85      return ELF::R_HEX_GD_GOT_16;
86    case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
87      return ELF::R_HEX_IE_GOT_16;
88    case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
89      return ELF::R_HEX_LD_GOT_16;
90    case MCSymbolRefExpr::VariantKind::VK_TPREL:
91      return ELF::R_HEX_TPREL_16;
92    case MCSymbolRefExpr::VariantKind::VK_None:
93      return ELF::R_HEX_16;
94    default:
95      report_fatal_error("Unrecognized variant type");
96    };
97  case FK_Data_1:
98    return ELF::R_HEX_8;
99  case fixup_Hexagon_B22_PCREL:
100    return ELF::R_HEX_B22_PCREL;
101  case fixup_Hexagon_B15_PCREL:
102    return ELF::R_HEX_B15_PCREL;
103  case fixup_Hexagon_B7_PCREL:
104    return ELF::R_HEX_B7_PCREL;
105  case fixup_Hexagon_LO16:
106    return ELF::R_HEX_LO16;
107  case fixup_Hexagon_HI16:
108    return ELF::R_HEX_HI16;
109  case fixup_Hexagon_32:
110    return ELF::R_HEX_32;
111  case fixup_Hexagon_16:
112    return ELF::R_HEX_16;
113  case fixup_Hexagon_8:
114    return ELF::R_HEX_8;
115  case fixup_Hexagon_GPREL16_0:
116    return ELF::R_HEX_GPREL16_0;
117  case fixup_Hexagon_GPREL16_1:
118    return ELF::R_HEX_GPREL16_1;
119  case fixup_Hexagon_GPREL16_2:
120    return ELF::R_HEX_GPREL16_2;
121  case fixup_Hexagon_GPREL16_3:
122    return ELF::R_HEX_GPREL16_3;
123  case fixup_Hexagon_HL16:
124    return ELF::R_HEX_HL16;
125  case fixup_Hexagon_B13_PCREL:
126    return ELF::R_HEX_B13_PCREL;
127  case fixup_Hexagon_B9_PCREL:
128    return ELF::R_HEX_B9_PCREL;
129  case fixup_Hexagon_B32_PCREL_X:
130    return ELF::R_HEX_B32_PCREL_X;
131  case fixup_Hexagon_32_6_X:
132    return ELF::R_HEX_32_6_X;
133  case fixup_Hexagon_B22_PCREL_X:
134    return ELF::R_HEX_B22_PCREL_X;
135  case fixup_Hexagon_B15_PCREL_X:
136    return ELF::R_HEX_B15_PCREL_X;
137  case fixup_Hexagon_B13_PCREL_X:
138    return ELF::R_HEX_B13_PCREL_X;
139  case fixup_Hexagon_B9_PCREL_X:
140    return ELF::R_HEX_B9_PCREL_X;
141  case fixup_Hexagon_B7_PCREL_X:
142    return ELF::R_HEX_B7_PCREL_X;
143  case fixup_Hexagon_16_X:
144    return ELF::R_HEX_16_X;
145  case fixup_Hexagon_12_X:
146    return ELF::R_HEX_12_X;
147  case fixup_Hexagon_11_X:
148    return ELF::R_HEX_11_X;
149  case fixup_Hexagon_10_X:
150    return ELF::R_HEX_10_X;
151  case fixup_Hexagon_9_X:
152    return ELF::R_HEX_9_X;
153  case fixup_Hexagon_8_X:
154    return ELF::R_HEX_8_X;
155  case fixup_Hexagon_7_X:
156    return ELF::R_HEX_7_X;
157  case fixup_Hexagon_6_X:
158    return ELF::R_HEX_6_X;
159  case fixup_Hexagon_32_PCREL:
160    return ELF::R_HEX_32_PCREL;
161  case fixup_Hexagon_COPY:
162    return ELF::R_HEX_COPY;
163  case fixup_Hexagon_GLOB_DAT:
164    return ELF::R_HEX_GLOB_DAT;
165  case fixup_Hexagon_JMP_SLOT:
166    return ELF::R_HEX_JMP_SLOT;
167  case fixup_Hexagon_RELATIVE:
168    return ELF::R_HEX_RELATIVE;
169  case fixup_Hexagon_PLT_B22_PCREL:
170    return ELF::R_HEX_PLT_B22_PCREL;
171  case fixup_Hexagon_GOTREL_LO16:
172    return ELF::R_HEX_GOTREL_LO16;
173  case fixup_Hexagon_GOTREL_HI16:
174    return ELF::R_HEX_GOTREL_HI16;
175  case fixup_Hexagon_GOTREL_32:
176    return ELF::R_HEX_GOTREL_32;
177  case fixup_Hexagon_GOT_LO16:
178    return ELF::R_HEX_GOT_LO16;
179  case fixup_Hexagon_GOT_HI16:
180    return ELF::R_HEX_GOT_HI16;
181  case fixup_Hexagon_GOT_32:
182    return ELF::R_HEX_GOT_32;
183  case fixup_Hexagon_GOT_16:
184    return ELF::R_HEX_GOT_16;
185  case fixup_Hexagon_DTPMOD_32:
186    return ELF::R_HEX_DTPMOD_32;
187  case fixup_Hexagon_DTPREL_LO16:
188    return ELF::R_HEX_DTPREL_LO16;
189  case fixup_Hexagon_DTPREL_HI16:
190    return ELF::R_HEX_DTPREL_HI16;
191  case fixup_Hexagon_DTPREL_32:
192    return ELF::R_HEX_DTPREL_32;
193  case fixup_Hexagon_DTPREL_16:
194    return ELF::R_HEX_DTPREL_16;
195  case fixup_Hexagon_GD_PLT_B22_PCREL:
196    return ELF::R_HEX_GD_PLT_B22_PCREL;
197  case fixup_Hexagon_LD_PLT_B22_PCREL:
198    return ELF::R_HEX_LD_PLT_B22_PCREL;
199  case fixup_Hexagon_GD_GOT_LO16:
200    return ELF::R_HEX_GD_GOT_LO16;
201  case fixup_Hexagon_GD_GOT_HI16:
202    return ELF::R_HEX_GD_GOT_HI16;
203  case fixup_Hexagon_GD_GOT_32:
204    return ELF::R_HEX_GD_GOT_32;
205  case fixup_Hexagon_GD_GOT_16:
206    return ELF::R_HEX_GD_GOT_16;
207  case fixup_Hexagon_LD_GOT_LO16:
208    return ELF::R_HEX_LD_GOT_LO16;
209  case fixup_Hexagon_LD_GOT_HI16:
210    return ELF::R_HEX_LD_GOT_HI16;
211  case fixup_Hexagon_LD_GOT_32:
212    return ELF::R_HEX_LD_GOT_32;
213  case fixup_Hexagon_LD_GOT_16:
214    return ELF::R_HEX_LD_GOT_16;
215  case fixup_Hexagon_IE_LO16:
216    return ELF::R_HEX_IE_LO16;
217  case fixup_Hexagon_IE_HI16:
218    return ELF::R_HEX_IE_HI16;
219  case fixup_Hexagon_IE_32:
220    return ELF::R_HEX_IE_32;
221  case fixup_Hexagon_IE_GOT_LO16:
222    return ELF::R_HEX_IE_GOT_LO16;
223  case fixup_Hexagon_IE_GOT_HI16:
224    return ELF::R_HEX_IE_GOT_HI16;
225  case fixup_Hexagon_IE_GOT_32:
226    return ELF::R_HEX_IE_GOT_32;
227  case fixup_Hexagon_IE_GOT_16:
228    return ELF::R_HEX_IE_GOT_16;
229  case fixup_Hexagon_TPREL_LO16:
230    return ELF::R_HEX_TPREL_LO16;
231  case fixup_Hexagon_TPREL_HI16:
232    return ELF::R_HEX_TPREL_HI16;
233  case fixup_Hexagon_TPREL_32:
234    return ELF::R_HEX_TPREL_32;
235  case fixup_Hexagon_TPREL_16:
236    return ELF::R_HEX_TPREL_16;
237  case fixup_Hexagon_6_PCREL_X:
238    return ELF::R_HEX_6_PCREL_X;
239  case fixup_Hexagon_GOTREL_32_6_X:
240    return ELF::R_HEX_GOTREL_32_6_X;
241  case fixup_Hexagon_GOTREL_16_X:
242    return ELF::R_HEX_GOTREL_16_X;
243  case fixup_Hexagon_GOTREL_11_X:
244    return ELF::R_HEX_GOTREL_11_X;
245  case fixup_Hexagon_GOT_32_6_X:
246    return ELF::R_HEX_GOT_32_6_X;
247  case fixup_Hexagon_GOT_16_X:
248    return ELF::R_HEX_GOT_16_X;
249  case fixup_Hexagon_GOT_11_X:
250    return ELF::R_HEX_GOT_11_X;
251  case fixup_Hexagon_DTPREL_32_6_X:
252    return ELF::R_HEX_DTPREL_32_6_X;
253  case fixup_Hexagon_DTPREL_16_X:
254    return ELF::R_HEX_DTPREL_16_X;
255  case fixup_Hexagon_DTPREL_11_X:
256    return ELF::R_HEX_DTPREL_11_X;
257  case fixup_Hexagon_GD_GOT_32_6_X:
258    return ELF::R_HEX_GD_GOT_32_6_X;
259  case fixup_Hexagon_GD_GOT_16_X:
260    return ELF::R_HEX_GD_GOT_16_X;
261  case fixup_Hexagon_GD_GOT_11_X:
262    return ELF::R_HEX_GD_GOT_11_X;
263  case fixup_Hexagon_LD_GOT_32_6_X:
264    return ELF::R_HEX_LD_GOT_32_6_X;
265  case fixup_Hexagon_LD_GOT_16_X:
266    return ELF::R_HEX_LD_GOT_16_X;
267  case fixup_Hexagon_LD_GOT_11_X:
268    return ELF::R_HEX_LD_GOT_11_X;
269  case fixup_Hexagon_IE_32_6_X:
270    return ELF::R_HEX_IE_32_6_X;
271  case fixup_Hexagon_IE_16_X:
272    return ELF::R_HEX_IE_16_X;
273  case fixup_Hexagon_IE_GOT_32_6_X:
274    return ELF::R_HEX_IE_GOT_32_6_X;
275  case fixup_Hexagon_IE_GOT_16_X:
276    return ELF::R_HEX_IE_GOT_16_X;
277  case fixup_Hexagon_IE_GOT_11_X:
278    return ELF::R_HEX_IE_GOT_11_X;
279  case fixup_Hexagon_TPREL_32_6_X:
280    return ELF::R_HEX_TPREL_32_6_X;
281  case fixup_Hexagon_TPREL_16_X:
282    return ELF::R_HEX_TPREL_16_X;
283  case fixup_Hexagon_TPREL_11_X:
284    return ELF::R_HEX_TPREL_11_X;
285  case fixup_Hexagon_23_REG:
286    return ELF::R_HEX_23_REG;
287  case fixup_Hexagon_27_REG:
288    return ELF::R_HEX_27_REG;
289  case fixup_Hexagon_GD_PLT_B22_PCREL_X:
290    return ELF::R_HEX_GD_PLT_B22_PCREL_X;
291  case fixup_Hexagon_GD_PLT_B32_PCREL_X:
292    return ELF::R_HEX_GD_PLT_B32_PCREL_X;
293  case fixup_Hexagon_LD_PLT_B22_PCREL_X:
294    return ELF::R_HEX_LD_PLT_B22_PCREL_X;
295  case fixup_Hexagon_LD_PLT_B32_PCREL_X:
296    return ELF::R_HEX_LD_PLT_B32_PCREL_X;
297  }
298}
299
300std::unique_ptr<MCObjectTargetWriter>
301llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) {
302  return std::make_unique<HexagonELFObjectWriter>(OSABI, CPU);
303}
304