LLVM 20.0.0git
HexagonELFObjectWriter.cpp
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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
16#define DEBUG_TYPE "hexagon-elf-writer"
17
18using namespace llvm;
19using namespace Hexagon;
20
21namespace {
22
23class HexagonELFObjectWriter : public MCELFObjectTargetWriter {
24private:
25 StringRef CPU;
26
27public:
28 HexagonELFObjectWriter(uint8_t OSABI, StringRef C);
29
30 unsigned getRelocType(MCContext &Ctx, MCValue const &Target,
31 MCFixup const &Fixup, bool IsPCRel) const override;
32};
33}
34
35HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C)
36 : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON,
37 /*HasRelocationAddend*/ true),
38 CPU(C) {}
39
40unsigned HexagonELFObjectWriter::getRelocType(MCContext &Ctx,
41 MCValue const &Target,
42 MCFixup const &Fixup,
43 bool IsPCRel) const {
44 MCSymbolRefExpr::VariantKind Variant = Target.getAccessVariant();
45 switch (Fixup.getTargetKind()) {
46 default:
47 report_fatal_error("Unrecognized relocation type");
48 break;
49 case FK_Data_4:
50 switch(Variant) {
51 case MCSymbolRefExpr::VariantKind::VK_DTPREL:
52 return ELF::R_HEX_DTPREL_32;
53 case MCSymbolRefExpr::VariantKind::VK_GOT:
54 return ELF::R_HEX_GOT_32;
55 case MCSymbolRefExpr::VariantKind::VK_GOTREL:
56 return ELF::R_HEX_GOTREL_32;
57 case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
58 return ELF::R_HEX_GD_GOT_32;
59 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE:
60 return ELF::R_HEX_IE_32;
61 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
62 return ELF::R_HEX_IE_GOT_32;
63 case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
64 return ELF::R_HEX_LD_GOT_32;
65 case MCSymbolRefExpr::VariantKind::VK_PCREL:
66 return ELF::R_HEX_32_PCREL;
67 case MCSymbolRefExpr::VariantKind::VK_TPREL:
68 return ELF::R_HEX_TPREL_32;
69 case MCSymbolRefExpr::VariantKind::VK_None:
70 return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32;
71 default:
72 report_fatal_error("Unrecognized variant type");
73 };
74 case FK_PCRel_4:
75 return ELF::R_HEX_32_PCREL;
76 case FK_Data_2:
77 switch(Variant) {
78 case MCSymbolRefExpr::VariantKind::VK_DTPREL:
79 return ELF::R_HEX_DTPREL_16;
80 case MCSymbolRefExpr::VariantKind::VK_GOT:
81 return ELF::R_HEX_GOT_16;
82 case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
83 return ELF::R_HEX_GD_GOT_16;
84 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
85 return ELF::R_HEX_IE_GOT_16;
86 case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
87 return ELF::R_HEX_LD_GOT_16;
88 case MCSymbolRefExpr::VariantKind::VK_TPREL:
89 return ELF::R_HEX_TPREL_16;
90 case MCSymbolRefExpr::VariantKind::VK_None:
91 return ELF::R_HEX_16;
92 default:
93 report_fatal_error("Unrecognized variant type");
94 };
95 case FK_Data_1:
96 return ELF::R_HEX_8;
97 case fixup_Hexagon_B22_PCREL:
98 return ELF::R_HEX_B22_PCREL;
99 case fixup_Hexagon_B15_PCREL:
100 return ELF::R_HEX_B15_PCREL;
101 case fixup_Hexagon_B7_PCREL:
102 return ELF::R_HEX_B7_PCREL;
103 case fixup_Hexagon_LO16:
104 return ELF::R_HEX_LO16;
105 case fixup_Hexagon_HI16:
106 return ELF::R_HEX_HI16;
107 case fixup_Hexagon_32:
108 return ELF::R_HEX_32;
109 case fixup_Hexagon_16:
110 return ELF::R_HEX_16;
111 case fixup_Hexagon_8:
112 return ELF::R_HEX_8;
113 case fixup_Hexagon_GPREL16_0:
114 return ELF::R_HEX_GPREL16_0;
115 case fixup_Hexagon_GPREL16_1:
116 return ELF::R_HEX_GPREL16_1;
117 case fixup_Hexagon_GPREL16_2:
118 return ELF::R_HEX_GPREL16_2;
119 case fixup_Hexagon_GPREL16_3:
120 return ELF::R_HEX_GPREL16_3;
121 case fixup_Hexagon_HL16:
122 return ELF::R_HEX_HL16;
123 case fixup_Hexagon_B13_PCREL:
124 return ELF::R_HEX_B13_PCREL;
125 case fixup_Hexagon_B9_PCREL:
126 return ELF::R_HEX_B9_PCREL;
127 case fixup_Hexagon_B32_PCREL_X:
128 return ELF::R_HEX_B32_PCREL_X;
129 case fixup_Hexagon_32_6_X:
130 return ELF::R_HEX_32_6_X;
131 case fixup_Hexagon_B22_PCREL_X:
132 return ELF::R_HEX_B22_PCREL_X;
133 case fixup_Hexagon_B15_PCREL_X:
134 return ELF::R_HEX_B15_PCREL_X;
135 case fixup_Hexagon_B13_PCREL_X:
136 return ELF::R_HEX_B13_PCREL_X;
137 case fixup_Hexagon_B9_PCREL_X:
138 return ELF::R_HEX_B9_PCREL_X;
139 case fixup_Hexagon_B7_PCREL_X:
140 return ELF::R_HEX_B7_PCREL_X;
141 case fixup_Hexagon_16_X:
142 return ELF::R_HEX_16_X;
143 case fixup_Hexagon_12_X:
144 return ELF::R_HEX_12_X;
145 case fixup_Hexagon_11_X:
146 return ELF::R_HEX_11_X;
147 case fixup_Hexagon_10_X:
148 return ELF::R_HEX_10_X;
149 case fixup_Hexagon_9_X:
150 return ELF::R_HEX_9_X;
151 case fixup_Hexagon_8_X:
152 return ELF::R_HEX_8_X;
153 case fixup_Hexagon_7_X:
154 return ELF::R_HEX_7_X;
155 case fixup_Hexagon_6_X:
156 return ELF::R_HEX_6_X;
157 case fixup_Hexagon_32_PCREL:
158 return ELF::R_HEX_32_PCREL;
159 case fixup_Hexagon_COPY:
160 return ELF::R_HEX_COPY;
161 case fixup_Hexagon_GLOB_DAT:
162 return ELF::R_HEX_GLOB_DAT;
163 case fixup_Hexagon_JMP_SLOT:
164 return ELF::R_HEX_JMP_SLOT;
165 case fixup_Hexagon_RELATIVE:
166 return ELF::R_HEX_RELATIVE;
167 case fixup_Hexagon_PLT_B22_PCREL:
168 return ELF::R_HEX_PLT_B22_PCREL;
169 case fixup_Hexagon_GOTREL_LO16:
170 return ELF::R_HEX_GOTREL_LO16;
171 case fixup_Hexagon_GOTREL_HI16:
172 return ELF::R_HEX_GOTREL_HI16;
173 case fixup_Hexagon_GOTREL_32:
174 return ELF::R_HEX_GOTREL_32;
175 case fixup_Hexagon_GOT_LO16:
176 return ELF::R_HEX_GOT_LO16;
177 case fixup_Hexagon_GOT_HI16:
178 return ELF::R_HEX_GOT_HI16;
179 case fixup_Hexagon_GOT_32:
180 return ELF::R_HEX_GOT_32;
181 case fixup_Hexagon_GOT_16:
182 return ELF::R_HEX_GOT_16;
183 case fixup_Hexagon_DTPMOD_32:
184 return ELF::R_HEX_DTPMOD_32;
185 case fixup_Hexagon_DTPREL_LO16:
186 return ELF::R_HEX_DTPREL_LO16;
187 case fixup_Hexagon_DTPREL_HI16:
188 return ELF::R_HEX_DTPREL_HI16;
189 case fixup_Hexagon_DTPREL_32:
190 return ELF::R_HEX_DTPREL_32;
191 case fixup_Hexagon_DTPREL_16:
192 return ELF::R_HEX_DTPREL_16;
193 case fixup_Hexagon_GD_PLT_B22_PCREL:
194 return ELF::R_HEX_GD_PLT_B22_PCREL;
195 case fixup_Hexagon_LD_PLT_B22_PCREL:
196 return ELF::R_HEX_LD_PLT_B22_PCREL;
197 case fixup_Hexagon_GD_GOT_LO16:
198 return ELF::R_HEX_GD_GOT_LO16;
199 case fixup_Hexagon_GD_GOT_HI16:
200 return ELF::R_HEX_GD_GOT_HI16;
201 case fixup_Hexagon_GD_GOT_32:
202 return ELF::R_HEX_GD_GOT_32;
203 case fixup_Hexagon_GD_GOT_16:
204 return ELF::R_HEX_GD_GOT_16;
205 case fixup_Hexagon_LD_GOT_LO16:
206 return ELF::R_HEX_LD_GOT_LO16;
207 case fixup_Hexagon_LD_GOT_HI16:
208 return ELF::R_HEX_LD_GOT_HI16;
209 case fixup_Hexagon_LD_GOT_32:
210 return ELF::R_HEX_LD_GOT_32;
211 case fixup_Hexagon_LD_GOT_16:
212 return ELF::R_HEX_LD_GOT_16;
213 case fixup_Hexagon_IE_LO16:
214 return ELF::R_HEX_IE_LO16;
215 case fixup_Hexagon_IE_HI16:
216 return ELF::R_HEX_IE_HI16;
217 case fixup_Hexagon_IE_32:
218 return ELF::R_HEX_IE_32;
219 case fixup_Hexagon_IE_GOT_LO16:
220 return ELF::R_HEX_IE_GOT_LO16;
221 case fixup_Hexagon_IE_GOT_HI16:
222 return ELF::R_HEX_IE_GOT_HI16;
223 case fixup_Hexagon_IE_GOT_32:
224 return ELF::R_HEX_IE_GOT_32;
225 case fixup_Hexagon_IE_GOT_16:
226 return ELF::R_HEX_IE_GOT_16;
227 case fixup_Hexagon_TPREL_LO16:
228 return ELF::R_HEX_TPREL_LO16;
229 case fixup_Hexagon_TPREL_HI16:
230 return ELF::R_HEX_TPREL_HI16;
231 case fixup_Hexagon_TPREL_32:
232 return ELF::R_HEX_TPREL_32;
233 case fixup_Hexagon_TPREL_16:
234 return ELF::R_HEX_TPREL_16;
235 case fixup_Hexagon_6_PCREL_X:
236 return ELF::R_HEX_6_PCREL_X;
237 case fixup_Hexagon_GOTREL_32_6_X:
238 return ELF::R_HEX_GOTREL_32_6_X;
239 case fixup_Hexagon_GOTREL_16_X:
240 return ELF::R_HEX_GOTREL_16_X;
241 case fixup_Hexagon_GOTREL_11_X:
242 return ELF::R_HEX_GOTREL_11_X;
243 case fixup_Hexagon_GOT_32_6_X:
244 return ELF::R_HEX_GOT_32_6_X;
245 case fixup_Hexagon_GOT_16_X:
246 return ELF::R_HEX_GOT_16_X;
247 case fixup_Hexagon_GOT_11_X:
248 return ELF::R_HEX_GOT_11_X;
249 case fixup_Hexagon_DTPREL_32_6_X:
250 return ELF::R_HEX_DTPREL_32_6_X;
251 case fixup_Hexagon_DTPREL_16_X:
252 return ELF::R_HEX_DTPREL_16_X;
253 case fixup_Hexagon_DTPREL_11_X:
254 return ELF::R_HEX_DTPREL_11_X;
255 case fixup_Hexagon_GD_GOT_32_6_X:
256 return ELF::R_HEX_GD_GOT_32_6_X;
257 case fixup_Hexagon_GD_GOT_16_X:
258 return ELF::R_HEX_GD_GOT_16_X;
259 case fixup_Hexagon_GD_GOT_11_X:
260 return ELF::R_HEX_GD_GOT_11_X;
261 case fixup_Hexagon_LD_GOT_32_6_X:
262 return ELF::R_HEX_LD_GOT_32_6_X;
263 case fixup_Hexagon_LD_GOT_16_X:
264 return ELF::R_HEX_LD_GOT_16_X;
265 case fixup_Hexagon_LD_GOT_11_X:
266 return ELF::R_HEX_LD_GOT_11_X;
267 case fixup_Hexagon_IE_32_6_X:
268 return ELF::R_HEX_IE_32_6_X;
269 case fixup_Hexagon_IE_16_X:
270 return ELF::R_HEX_IE_16_X;
271 case fixup_Hexagon_IE_GOT_32_6_X:
272 return ELF::R_HEX_IE_GOT_32_6_X;
273 case fixup_Hexagon_IE_GOT_16_X:
274 return ELF::R_HEX_IE_GOT_16_X;
275 case fixup_Hexagon_IE_GOT_11_X:
276 return ELF::R_HEX_IE_GOT_11_X;
277 case fixup_Hexagon_TPREL_32_6_X:
278 return ELF::R_HEX_TPREL_32_6_X;
279 case fixup_Hexagon_TPREL_16_X:
280 return ELF::R_HEX_TPREL_16_X;
281 case fixup_Hexagon_TPREL_11_X:
282 return ELF::R_HEX_TPREL_11_X;
283 case fixup_Hexagon_23_REG:
284 return ELF::R_HEX_23_REG;
285 case fixup_Hexagon_27_REG:
286 return ELF::R_HEX_27_REG;
287 case fixup_Hexagon_GD_PLT_B22_PCREL_X:
288 return ELF::R_HEX_GD_PLT_B22_PCREL_X;
289 case fixup_Hexagon_GD_PLT_B32_PCREL_X:
290 return ELF::R_HEX_GD_PLT_B32_PCREL_X;
291 case fixup_Hexagon_LD_PLT_B22_PCREL_X:
292 return ELF::R_HEX_LD_PLT_B22_PCREL_X;
293 case fixup_Hexagon_LD_PLT_B32_PCREL_X:
294 return ELF::R_HEX_LD_PLT_B32_PCREL_X;
295 }
296}
297
298std::unique_ptr<MCObjectTargetWriter>
299llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) {
300 return std::make_unique<HexagonELFObjectWriter>(OSABI, CPU);
301}
true
basic Basic Alias true
Definition: BasicAliasAnalysis.cpp:1981
Fixup
PowerPC TLS Dynamic Call Fixup
Definition: PPCTLSDynamicCall.cpp:339
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:83
llvm::MCELFObjectTargetWriter::getRelocType
virtual unsigned getRelocType(MCContext &Ctx, const MCValue &Target, const MCFixup &Fixup, bool IsPCRel) const =0
llvm::MCFixup
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:71
llvm::MCValue
This represents an "assembler immediate".
Definition: MCValue.h:36
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:51
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:144
uint8_t
llvm::CallingConv::C
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
llvm::ELF::EM_HEXAGON
@ EM_HEXAGON
Definition: ELF.h:258
llvm::Loc::Variant
std::variant< std::monostate, Loc::Single, Loc::Multi, Loc::MMI, Loc::EntryValue > Variant
Alias for the std::variant specialization base class of DbgVariable.
Definition: DwarfDebug.h:190
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::createHexagonELFObjectWriter
std::unique_ptr< MCObjectTargetWriter > createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU)
Definition: HexagonELFObjectWriter.cpp:299
llvm::report_fatal_error
void report_fatal_error(Error Err, bool gen_crash_diag=true)
Report a serious error, calling any installed error handler.
Definition: Error.cpp:167
llvm::FK_PCRel_4
@ FK_PCRel_4
A four-byte pc relative fixup.
Definition: MCFixup.h:30
llvm::FK_Data_1
@ FK_Data_1
A one-byte fixup.
Definition: MCFixup.h:23
llvm::FK_Data_4
@ FK_Data_4
A four-byte fixup.
Definition: MCFixup.h:25
llvm::FK_Data_2
@ FK_Data_2
A two-byte fixup.
Definition: MCFixup.h:24
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