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
20 using namespace llvm;
21 using namespace Hexagon;
22
23 namespace {
24
25 class HexagonELFObjectWriter : public MCELFObjectTargetWriter {
26 private:
27 StringRef CPU;
28
29 public:
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
HexagonELFObjectWriter(uint8_t OSABI,StringRef C)37 HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C)
38 : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON,
39 /*HasRelocationAddend*/ true),
40 CPU(C) {}
41
getRelocType(MCContext & Ctx,MCValue const & Target,MCFixup const & Fixup,bool IsPCRel) const42 unsigned 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
300 std::unique_ptr<MCObjectTargetWriter>
createHexagonELFObjectWriter(uint8_t OSABI,StringRef CPU)301 llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) {
302 return std::make_unique<HexagonELFObjectWriter>(OSABI, CPU);
303 }
304