LLVM  8.0.1
HexagonELFObjectWriter.cpp
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1 //===-- HexagonELFObjectWriter.cpp - Hexagon Target Descriptions ----------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Hexagon.h"
11 #include "MCTargetDesc/HexagonFixupKinds.h"
12 #include "llvm/MC/MCAssembler.h"
13 #include "llvm/MC/MCELFObjectWriter.h"
14 #include "llvm/MC/MCObjectWriter.h"
15 #include "llvm/MC/MCValue.h"
16 #include "llvm/Support/Debug.h"
17 #include "llvm/Support/raw_ostream.h"
18 
19 #define DEBUG_TYPE "hexagon-elf-writer"
20 
21 using namespace llvm;
22 using namespace Hexagon;
23 
24 namespace {
25 
26 class HexagonELFObjectWriter : public MCELFObjectTargetWriter {
27 private:
28  StringRef CPU;
29 
30 public:
31  HexagonELFObjectWriter(uint8_t OSABI, StringRef C);
32 
33  unsigned getRelocType(MCContext &Ctx, MCValue const &Target,
34  MCFixup const &Fixup, bool IsPCRel) const override;
35 };
36 }
37 
38 HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C)
39  : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON,
40  /*HasRelocationAddend*/ true),
41  CPU(C) {}
42 
43 unsigned HexagonELFObjectWriter::getRelocType(MCContext &Ctx,
44  MCValue const &Target,
45  MCFixup const &Fixup,
46  bool IsPCRel) const {
47  MCSymbolRefExpr::VariantKind Variant = Target.getAccessVariant();
48  switch ((unsigned)Fixup.getKind()) {
49  default:
50  report_fatal_error("Unrecognized relocation type");
51  break;
52  case FK_Data_4:
53  switch(Variant) {
54  case MCSymbolRefExpr::VariantKind::VK_DTPREL:
55  return ELF::R_HEX_DTPREL_32;
56  case MCSymbolRefExpr::VariantKind::VK_GOT:
57  return ELF::R_HEX_GOT_32;
58  case MCSymbolRefExpr::VariantKind::VK_GOTREL:
59  return ELF::R_HEX_GOTREL_32;
60  case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
61  return ELF::R_HEX_GD_GOT_32;
62  case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE:
63  return ELF::R_HEX_IE_32;
64  case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
65  return ELF::R_HEX_IE_GOT_32;
66  case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
67  return ELF::R_HEX_LD_GOT_32;
68  case MCSymbolRefExpr::VariantKind::VK_Hexagon_PCREL:
69  return ELF::R_HEX_32_PCREL;
70  case MCSymbolRefExpr::VariantKind::VK_TPREL:
71  return ELF::R_HEX_TPREL_32;
72  case MCSymbolRefExpr::VariantKind::VK_None:
73  return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32;
74  default:
75  report_fatal_error("Unrecognized variant type");
76  };
77  case FK_PCRel_4:
78  return ELF::R_HEX_32_PCREL;
79  case FK_Data_2:
80  switch(Variant) {
81  case MCSymbolRefExpr::VariantKind::VK_DTPREL:
82  return ELF::R_HEX_DTPREL_16;
83  case MCSymbolRefExpr::VariantKind::VK_GOT:
84  return ELF::R_HEX_GOT_16;
85  case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
86  return ELF::R_HEX_GD_GOT_16;
87  case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
88  return ELF::R_HEX_IE_GOT_16;
89  case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
90  return ELF::R_HEX_LD_GOT_16;
91  case MCSymbolRefExpr::VariantKind::VK_TPREL:
92  return ELF::R_HEX_TPREL_16;
93  case MCSymbolRefExpr::VariantKind::VK_None:
94  return ELF::R_HEX_16;
95  default:
96  report_fatal_error("Unrecognized variant type");
97  };
98  case FK_Data_1:
99  return ELF::R_HEX_8;
100  case fixup_Hexagon_B22_PCREL:
101  return ELF::R_HEX_B22_PCREL;
102  case fixup_Hexagon_B15_PCREL:
103  return ELF::R_HEX_B15_PCREL;
104  case fixup_Hexagon_B7_PCREL:
105  return ELF::R_HEX_B7_PCREL;
106  case fixup_Hexagon_LO16:
107  return ELF::R_HEX_LO16;
108  case fixup_Hexagon_HI16:
109  return ELF::R_HEX_HI16;
110  case fixup_Hexagon_32:
111  return ELF::R_HEX_32;
112  case fixup_Hexagon_16:
113  return ELF::R_HEX_16;
114  case fixup_Hexagon_8:
115  return ELF::R_HEX_8;
116  case fixup_Hexagon_GPREL16_0:
117  return ELF::R_HEX_GPREL16_0;
118  case fixup_Hexagon_GPREL16_1:
119  return ELF::R_HEX_GPREL16_1;
120  case fixup_Hexagon_GPREL16_2:
121  return ELF::R_HEX_GPREL16_2;
122  case fixup_Hexagon_GPREL16_3:
123  return ELF::R_HEX_GPREL16_3;
124  case fixup_Hexagon_HL16:
125  return ELF::R_HEX_HL16;
126  case fixup_Hexagon_B13_PCREL:
127  return ELF::R_HEX_B13_PCREL;
128  case fixup_Hexagon_B9_PCREL:
129  return ELF::R_HEX_B9_PCREL;
130  case fixup_Hexagon_B32_PCREL_X:
131  return ELF::R_HEX_B32_PCREL_X;
132  case fixup_Hexagon_32_6_X:
133  return ELF::R_HEX_32_6_X;
134  case fixup_Hexagon_B22_PCREL_X:
135  return ELF::R_HEX_B22_PCREL_X;
136  case fixup_Hexagon_B15_PCREL_X:
137  return ELF::R_HEX_B15_PCREL_X;
138  case fixup_Hexagon_B13_PCREL_X:
139  return ELF::R_HEX_B13_PCREL_X;
140  case fixup_Hexagon_B9_PCREL_X:
141  return ELF::R_HEX_B9_PCREL_X;
142  case fixup_Hexagon_B7_PCREL_X:
143  return ELF::R_HEX_B7_PCREL_X;
144  case fixup_Hexagon_16_X:
145  return ELF::R_HEX_16_X;
146  case fixup_Hexagon_12_X:
147  return ELF::R_HEX_12_X;
148  case fixup_Hexagon_11_X:
149  return ELF::R_HEX_11_X;
150  case fixup_Hexagon_10_X:
151  return ELF::R_HEX_10_X;
152  case fixup_Hexagon_9_X:
153  return ELF::R_HEX_9_X;
154  case fixup_Hexagon_8_X:
155  return ELF::R_HEX_8_X;
156  case fixup_Hexagon_7_X:
157  return ELF::R_HEX_7_X;
158  case fixup_Hexagon_6_X:
159  return ELF::R_HEX_6_X;
160  case fixup_Hexagon_32_PCREL:
161  return ELF::R_HEX_32_PCREL;
162  case fixup_Hexagon_COPY:
163  return ELF::R_HEX_COPY;
164  case fixup_Hexagon_GLOB_DAT:
165  return ELF::R_HEX_GLOB_DAT;
166  case fixup_Hexagon_JMP_SLOT:
167  return ELF::R_HEX_JMP_SLOT;
168  case fixup_Hexagon_RELATIVE:
169  return ELF::R_HEX_RELATIVE;
170  case fixup_Hexagon_PLT_B22_PCREL:
171  return ELF::R_HEX_PLT_B22_PCREL;
172  case fixup_Hexagon_GOTREL_LO16:
173  return ELF::R_HEX_GOTREL_LO16;
174  case fixup_Hexagon_GOTREL_HI16:
175  return ELF::R_HEX_GOTREL_HI16;
176  case fixup_Hexagon_GOTREL_32:
177  return ELF::R_HEX_GOTREL_32;
178  case fixup_Hexagon_GOT_LO16:
179  return ELF::R_HEX_GOT_LO16;
180  case fixup_Hexagon_GOT_HI16:
181  return ELF::R_HEX_GOT_HI16;
182  case fixup_Hexagon_GOT_32:
183  return ELF::R_HEX_GOT_32;
184  case fixup_Hexagon_GOT_16:
185  return ELF::R_HEX_GOT_16;
186  case fixup_Hexagon_DTPMOD_32:
187  return ELF::R_HEX_DTPMOD_32;
188  case fixup_Hexagon_DTPREL_LO16:
189  return ELF::R_HEX_DTPREL_LO16;
190  case fixup_Hexagon_DTPREL_HI16:
191  return ELF::R_HEX_DTPREL_HI16;
192  case fixup_Hexagon_DTPREL_32:
193  return ELF::R_HEX_DTPREL_32;
194  case fixup_Hexagon_DTPREL_16:
195  return ELF::R_HEX_DTPREL_16;
196  case fixup_Hexagon_GD_PLT_B22_PCREL:
197  return ELF::R_HEX_GD_PLT_B22_PCREL;
198  case fixup_Hexagon_LD_PLT_B22_PCREL:
199  return ELF::R_HEX_LD_PLT_B22_PCREL;
200  case fixup_Hexagon_GD_GOT_LO16:
201  return ELF::R_HEX_GD_GOT_LO16;
202  case fixup_Hexagon_GD_GOT_HI16:
203  return ELF::R_HEX_GD_GOT_HI16;
204  case fixup_Hexagon_GD_GOT_32:
205  return ELF::R_HEX_GD_GOT_32;
206  case fixup_Hexagon_GD_GOT_16:
207  return ELF::R_HEX_GD_GOT_16;
208  case fixup_Hexagon_LD_GOT_LO16:
209  return ELF::R_HEX_LD_GOT_LO16;
210  case fixup_Hexagon_LD_GOT_HI16:
211  return ELF::R_HEX_LD_GOT_HI16;
212  case fixup_Hexagon_LD_GOT_32:
213  return ELF::R_HEX_LD_GOT_32;
214  case fixup_Hexagon_LD_GOT_16:
215  return ELF::R_HEX_LD_GOT_16;
216  case fixup_Hexagon_IE_LO16:
217  return ELF::R_HEX_IE_LO16;
218  case fixup_Hexagon_IE_HI16:
219  return ELF::R_HEX_IE_HI16;
220  case fixup_Hexagon_IE_32:
221  return ELF::R_HEX_IE_32;
222  case fixup_Hexagon_IE_GOT_LO16:
223  return ELF::R_HEX_IE_GOT_LO16;
224  case fixup_Hexagon_IE_GOT_HI16:
225  return ELF::R_HEX_IE_GOT_HI16;
226  case fixup_Hexagon_IE_GOT_32:
227  return ELF::R_HEX_IE_GOT_32;
228  case fixup_Hexagon_IE_GOT_16:
229  return ELF::R_HEX_IE_GOT_16;
230  case fixup_Hexagon_TPREL_LO16:
231  return ELF::R_HEX_TPREL_LO16;
232  case fixup_Hexagon_TPREL_HI16:
233  return ELF::R_HEX_TPREL_HI16;
234  case fixup_Hexagon_TPREL_32:
235  return ELF::R_HEX_TPREL_32;
236  case fixup_Hexagon_TPREL_16:
237  return ELF::R_HEX_TPREL_16;
238  case fixup_Hexagon_6_PCREL_X:
239  return ELF::R_HEX_6_PCREL_X;
240  case fixup_Hexagon_GOTREL_32_6_X:
241  return ELF::R_HEX_GOTREL_32_6_X;
242  case fixup_Hexagon_GOTREL_16_X:
243  return ELF::R_HEX_GOTREL_16_X;
244  case fixup_Hexagon_GOTREL_11_X:
245  return ELF::R_HEX_GOTREL_11_X;
246  case fixup_Hexagon_GOT_32_6_X:
247  return ELF::R_HEX_GOT_32_6_X;
248  case fixup_Hexagon_GOT_16_X:
249  return ELF::R_HEX_GOT_16_X;
250  case fixup_Hexagon_GOT_11_X:
251  return ELF::R_HEX_GOT_11_X;
252  case fixup_Hexagon_DTPREL_32_6_X:
253  return ELF::R_HEX_DTPREL_32_6_X;
254  case fixup_Hexagon_DTPREL_16_X:
255  return ELF::R_HEX_DTPREL_16_X;
256  case fixup_Hexagon_DTPREL_11_X:
257  return ELF::R_HEX_DTPREL_11_X;
258  case fixup_Hexagon_GD_GOT_32_6_X:
259  return ELF::R_HEX_GD_GOT_32_6_X;
260  case fixup_Hexagon_GD_GOT_16_X:
261  return ELF::R_HEX_GD_GOT_16_X;
262  case fixup_Hexagon_GD_GOT_11_X:
263  return ELF::R_HEX_GD_GOT_11_X;
264  case fixup_Hexagon_LD_GOT_32_6_X:
265  return ELF::R_HEX_LD_GOT_32_6_X;
266  case fixup_Hexagon_LD_GOT_16_X:
267  return ELF::R_HEX_LD_GOT_16_X;
268  case fixup_Hexagon_LD_GOT_11_X:
269  return ELF::R_HEX_LD_GOT_11_X;
270  case fixup_Hexagon_IE_32_6_X:
271  return ELF::R_HEX_IE_32_6_X;
272  case fixup_Hexagon_IE_16_X:
273  return ELF::R_HEX_IE_16_X;
274  case fixup_Hexagon_IE_GOT_32_6_X:
275  return ELF::R_HEX_IE_GOT_32_6_X;
276  case fixup_Hexagon_IE_GOT_16_X:
277  return ELF::R_HEX_IE_GOT_16_X;
278  case fixup_Hexagon_IE_GOT_11_X:
279  return ELF::R_HEX_IE_GOT_11_X;
280  case fixup_Hexagon_TPREL_32_6_X:
281  return ELF::R_HEX_TPREL_32_6_X;
282  case fixup_Hexagon_TPREL_16_X:
283  return ELF::R_HEX_TPREL_16_X;
284  case fixup_Hexagon_TPREL_11_X:
285  return ELF::R_HEX_TPREL_11_X;
286  case fixup_Hexagon_23_REG:
287  return ELF::R_HEX_23_REG;
288  case fixup_Hexagon_27_REG:
289  return ELF::R_HEX_27_REG;
290  case fixup_Hexagon_GD_PLT_B22_PCREL_X:
291  return ELF::R_HEX_GD_PLT_B22_PCREL_X;
292  case fixup_Hexagon_GD_PLT_B32_PCREL_X:
293  return ELF::R_HEX_GD_PLT_B32_PCREL_X;
294  case fixup_Hexagon_LD_PLT_B22_PCREL_X:
295  return ELF::R_HEX_LD_PLT_B22_PCREL_X;
296  case fixup_Hexagon_LD_PLT_B32_PCREL_X:
297  return ELF::R_HEX_LD_PLT_B32_PCREL_X;
298  }
299 }
300 
301 std::unique_ptr<MCObjectTargetWriter>
302 llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) {
303  return llvm::make_unique<HexagonELFObjectWriter>(OSABI, CPU);
304 }
C
uint64_t CallInst * C
Definition: NVVMIntrRange.cpp:67
llvm::report_fatal_error
LLVM_ATTRIBUTE_NORETURN void report_fatal_error(Error Err, bool gen_crash_diag=true)
Report a serious error, calling any installed error handler.
Definition: Error.cpp:140
llvm
This class represents lattice values for constants.
Definition: AllocatorList.h:24
llvm::MCValue
This represents an "assembler immediate".
Definition: MCValue.h:40
llvm::MCValue::getAccessVariant
MCSymbolRefExpr::VariantKind getAccessVariant() const
Definition: MCValue.cpp:47
llvm::MCFixup
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:74
getRelocType
static unsigned getRelocType(const MCValue &Target, const MCFixupKind FixupKind, const bool IsPCRel)
Translates generic PPC fixup kind to Mach-O/PPC relocation type enum.
Definition: PPCMachObjectWriter.cpp:83
llvm::FK_Data_4
A four-byte fixup.
Definition: MCFixup.h:26
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:63
llvm::FK_Data_1
A one-byte fixup.
Definition: MCFixup.h:24
Fixup
PowerPC TLS Dynamic Call Fixup
Definition: PPCTLSDynamicCall.cpp:186
llvm::FK_PCRel_4
A four-byte pc relative fixup.
Definition: MCFixup.h:30
llvm::createHexagonELFObjectWriter
std::unique_ptr< MCObjectTargetWriter > createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU)
Definition: HexagonELFObjectWriter.cpp:302
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:120
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
raw_ostream.h
llvm::FK_Data_2
A two-byte fixup.
Definition: MCFixup.h:25
llvm::MCFixup::getKind
MCFixupKind getKind() const
Definition: MCFixup.h:123
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